BF175A(En)66ZY200V - BRP Diagnostics · This supplement describes the troubleshooting using ... FLYWHEEL/OIL PUMP 10 ... (High voltage) • MAP sensor • ECM

BF175A•BF200A•BF225A


PREFACEThis supplement describes the troubleshooting usingthe Dr. H for the Honda BF175A, BF200A andBF225A Outboard Motors.For service information which is not covered in thissupplement, please refer to the base shop manualand supplements, part numbers 66ZY200, 66ZY200Z,66ZY200Y.

Careful observance of these instructions will result in bet-ter, safe service work.

Pay attention to these symbols and their meaning:

Indicates a strong possibility of severepersonal injury or loss of life if instructions are notfollowed.

CAUTION: Indicates a possibility of personal injuryor equipment damage if instructions are not fol-lowed.

ALL INFORMATION'S, ILLUSTRATIONS, DIREC-TIONS AND SPECIFICATIONS INCLUDED IN THISPUBLICATION ARE BASED ON THE LATESTPRODUCT INFORMATION AVAILABLE AT THETIME OF APPROVAL FOR PRINTING. HondaMotor Co., Ltd. RESERVES THE RIGHT TO MAKECHANGES WITHOUT INCURRING ANY OBLIGA-TION WHATEVER. NO PART OF THIS PUBLICA-TION MAY BE REPRODUCED WITHOUT WRIT-TEN PERMISSION.

Honda Motor Co., LtdService Publication Office

CONTENTS

SPECIFICATIONS 1SERVICE INFORMATION 2MAINTENANCE 3ENGINE COVER/COVER LOCK 4PROGRAMMED-FUEL INJECTION 5ALTERNATOR/TIMING BELT 6ENGINE REMOVAL/INSTALLATION 7WATER JACKET/RELIEF VALVE/FLUSH VALVE 8CYLINDER HEAD VALVES 9FLYWHEEL/OIL PUMP 10CYLINDER BLOCK/CRANKSHAFT/PISTON 11PROPELLER/GEAR CASE/EXTENSION CASE 12OIL PAN/MOUNTING CASE 13SWIVEL CASE/POWER TRIM/TILT ASSEMBLY 14STEERING ROD/REMOTE CONTROL BOX 15CABLES/SHIFT LINK BRACKET/SHIFT ARM 16ELECTRICAL EQUIPMENT 17OPERATION 18WIRING DIAGRAM 19

20

Date of Issue: Feb., 2008© Honda Motor Co., Ltd.


5. PROGRAMMED FUEL INJECTION. . . . . . . . . . . . 5-11. SERVICE PRECAUTIONS . . . . . . . . . . . . . . . . 5-12. TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . 5-3

DTC-to-Symptom Troubleshooting Chart . . . . . 5-3ECM (Engine Control Module) . . . . . . . . . . . . . . 5-5HO2S (Heated Oxygen Sensor) . . . . . . . . . . . . 5-5MAP (Manifold Absolute Pressure) Sensor . . . . 5-7CKP (Crankshaft Position) Sensor. . . . . . . . . . . 5-9

ECT (Engine Coolant Temperature) Sensor 1 (a) . . 5-10TP (Throttle Position) Sensor. . . . . . . . . . . . . . . 5-13

CMP (Camshaft Position) 1 Sensor (b) . . . . . . . . 5-15IAT (Intake Air Temperature) Sensor. . . . . . . . . 5-17BARO (Barometric Pressure) Sensor . . . . . . . . 5-19IAC (Idle Air Control) Valve . . . . . . . . . . . . . . . . 5-21VTEC Spool Solenoid Valve (BF225A only) . . . 5-22Knock Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23HO2S (Heated Oxygen Sensor) Heater. . . . . . . 5-24

CMP (Camshaft Position) 2 Sensor (c) . . . . . . . . 5-25

ECT (Engine Coolant Temperature) Sensor 2 (d) . . 5-26

ECT (Engine Coolant Temperature) Sensor 3 (e) . . 5-29EOP (Engine Oil Pressure) Switch . . . . . . . . . . 5-31

INDEX

(a): Identified as ECT Sensor in the base shop manual(b): Identified as TDC 1 Sensor in the base shop manual(c): Identified as TDC 2 Sensor in the base shop manual(d): Identified as Overheat Sensor 1 in the base shop manual(e): Identified as Overheat Sensor 2 in the base shop manual


1. SERVICE PRECAUTIONSHow to Troubleshoot• When the MIL (Malfunction Indicator Light) comes

ON or blinks, or when a problem occurs during oper-ation, perform troubleshooting according to the fol-lowing procedures.

• For diagnostic troubleshooting, use a tapered testerprobe that fits the I.D. of the connecter terminal of acommercially available digital circuit tester.Connect the tester probe to the digital circuit testerwith care not to apply excessive force to the con-necter terminal.

• Refer to the base shop manual for the diagnostictroubleshooting information that are not covered inthis supplement.

1. Turn the ignition switch ON and check that the MILcomes ON.

2. If the MIL comes ON or blinks, check the DTC(Diagnostic Trouble Code) using the Dr. H.

3. Perform troubleshooting according to the "DTC-to-Symptom Troubleshooting Chart" (page 5-3).Check each connector for secure connection andthe wire harness for any abnormality, and connector repair as necessary before troubleshooting.

4. After troubleshooting, repair as necessary and per-form the post-troubleshooting steps (page 5-2).

DTC (Diagnostic Trouble Code) Check1. Remove the engine cover and remove the electric

part cover (See section 4 of the base manual).

2. Remove the red 4P connector and connect the Dr.H to the DLC (data link connector).

3. Turn the ignition switch ON.

4. Check the DTC and freeze data shown on the Dr. H.See the operation manual of the Dr. H for thedetailed information about how to use the Dr. H.

5. PROGRAMMED FUEL INJECTION1. SERVICE PRECAUTIONS 2. TROUBLESHOOTING

MIL

5-1

Dr. H CODE

DLC (Data Link Connector)RED 4P CONNECTOR

• Open Water Running Test:1. Remove the engine cover and remove the electric

part cover (See section 4 of the base manual).

2. Remove the cap from the front cover bracket andpass the tester extension cord through the cap holeof the front cover bracket.• Set the grommet of the extension cord to the

front cover bracket securely. It is not necessaryto use the grommet when performing test in atest tank.

3. Route the tester's extension cord as shown withcare not to allow it to interfere with other parts.

4. Remove the red 4P connector and connect theextension cord to the DLC (data link connector).

5. Connect the extension cord to the Dr. H.6. Install the electric part cover and engine cover in the

reverse order of removal.

How to Clear DTC1. Remove the engine cover and remove the electric

part cover (see section 4 of the base manual).

2. Connect the Dr. H to the DLC.

3. Turn the ignition switch ON.

4. Clear the DTC using the Dr. H.Refer to the Dr. H's operation manual for how to use theDr. H.• When an abnormality remains in the system, the

DTC cannot be cleared as the ECM continuesself-diagnosis.

Post-Troubleshooting Steps1. Clear the DTC.

2. Disconnect the Dr. H from the DLC.

3. Install the cap on the engine under cover.

4. Install the electric part cover and install the enginecover (See section 4 of the base manual).

5-2


CAP

TESTER CORD

ELECTRIC PART COVER

CAP

EXTENSION CORD

GROMMET

EXTENSION CORD

DLC (Data Link Connector)

2. TROUBLESHOOTINGDTC-to-Symptom Troubleshooting Chart

5-3


DTC Part detected (Symptom) Probable faulty part MIL Ref. page

0-2 Internal failure of ECM • ECM OFF or ON 5-5

1-4 HO2S (Heated Oxygen Sensor) • HO2S circuit (Open or short circuit) ON 5-5(Abnormal HO2S) • HO2S

• ECM

3-1 MAP (Manifold Absolute • MAP sensor circuit (Open or short circuit) ON 5-7Pressure) sensor • MAP sensor(Low voltage) • ECM

3-2 MAP sensor • MAP sensor circuit (Open circuit) ON 5-8(High voltage) • MAP sensor

• ECM

4-1 CKP (Crankshaft Position) • CKP sensor circuit (Open or short circuit) ON 5-9sensor • CKP sensor(No crank pulse) • ECM

4-2 CKP sensor • CKP sensor ON 5-10(Abnormal crank pulse) • ECM

6-1 ECT (Engine Coolant • ECT sensor 1 circuit (Short circuit) ON 5-10Temperature) sensor 1 (a) • ECT sensor 1(Low voltage) • ECM

6-2 ECT sensor 1 (a) • ECT sensor 1 circuit (Open circuit) ON 5-11(High voltage) • ECT sensor 1

• ECM

7-1 TP (Throttle Position) sensor • TP sensor circuit (Open or short circuit) ON 5-13(Low voltage) • TP sensor

• ECM

7-2 TP sensor • TP sensor circuit (Open circuit) ON 5-14(High voltage) • TP sensor

• ECM

8-1 CMP (Camshaft Position) • CMP 1 sensor circuit (Open or short circuit) ON 5-151 sensor (b) • CMP 1 sensor(No CMP 1 pulse) • ECM

8-2 CMP 1 sensor (b) • CMP1 sensor ON 5-16(Abnormal CMP 1 pulse) • ECM

10-1 IAT (Intake Air Temperature) • IAT sensor circuit (Short circuit) ON 5-17sensor • IAT sensor(Low voltage) • ECM

10-2 IAT sensor • IAT sensor circuit (Open circuit) ON 5-18(High voltage) • IAT sensor

• ECM

13-1 BARO (Barometric Pressure) • BARO sensor circuit (Open or short circuit) ON 5-19sensor • BARO sensor(Low voltage) • ECM

13-2 BARO sensor • BARO sensor circuit (Open circuit) ON 5-20(High voltage) • BARO sensor

• ECM

DTC Part detected (Symptom) Probable faulty part MIL Ref. page

14-1 IAC (Idle Air Control) Valve • IAC valve circuit (Open or short circuit) ON 5-21(Abnormal current) • IAC valve

• ECM

21-1(c) VTEC spool solenoid valve • VTEC spool solenoid valve circuit ON 5-22(Abnormal output) (Open or short circuit)

• VTEC spool solenoid valve• ECM

23-1 Knock sensor • Knock sensor circuit (Open or short circuit) ON 5-23(Abnormal output) • Knock sensor

• ECM

41-2 HO2S heater • HO2S heater circuit (Open or short circuit) ON 5-24(Abnormal HO2S heater) • HO2S heater

• ECM

58-1 CMP (Camshaft Position) • CMP 2 sensor circuit (Open or short circuit) ON 5-252 sensor (d) • CMP 2 sensor(No CMP 2 pulse) • ECM

58-2 CMP 2 sensor (d) • CMP 2 sensor ON 5-26(Abnormal CMP 2 pulse) • ECM

140-1 ECT sensor 2 (e) • ECT sensor 2 circuit (Short circuit) ON 5-26(Low voltage) • ECT sensor 2

• ECM

140-2 ECT sensor 2 (e) • ECT sensor 2 circuit (Open circuit) ON 5-27(High voltage) • ECT sensor 2

• ECM

141-1 ECT sensor 3 (f) • ECT sensor 3 circuit (Short circuit) ON 5-29(Low voltage) • ECT sensor 3

• ECM

141-2 ECT sensor 3 (f) • ECT sensor 3 circuit (Open circuit) ON 5-30(High voltage) • ECT sensor 3

• ECM

142-1 EOP (Engine Oil Pressure) • EOP switch circuit (Open or short circuit) ON 5-31switch • EOP switch(Abnormal EOP switch signal) • ECM

5-4


(a): Identified as ECT Sensor in the base shop manual.(b): Identified as TDC 1 Sensor in the base shop manual.(c): BF225A only(d): Identified as TDC 2 Sensor in the base shop manual.(e): Identified as Overheat Sensor 1 in the base shop manual.(f): Identified as Overheat Sensor 2 in the base shop manual.

●ECM (Engine Control Module)DTC 0-2: Internal failure of ECM1. Reappearance test-1. Connect the Dr. H (page 5-1).-2. Turn the ignition switch ON and wait for one second

or more.-3 Clear the DTC (page 5-2).-4. Start the engine and recheck the DTC.

◆ Does DTC 0-2 appear on the tester?YES - Recheck with a new ECM.NO - Temporary failure inside ECM (Disappears).

●HO2S (Heated Oxygen Sensor)DTC 1-4: Abnormal HO2S.1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.

• If the DTC cannot be cleared, continue trou-bleshooting.

-2. Start the engine and run it for 5 minutes to warmthe engine at 3,000 rpm with no load.

-3. Keep idling the engine for one minute or more withno load.

-4. Recheck the DTC with the Dr. H.

◆ Does DTC 1-4 appear on the tester?YES - Go to the step 2.NO - Temporary failure (Disappears).

2. Fuel pressure inspection-1. Perform fuel pressure inspection (see page 5-69 of

the base manual).

◆ Is it normal?YES - Go to the step 3.NO - Check the fuel supply system (see page 5-58

of the base manual).

3. HO2S voltage inspection-1. Start the engine and run it for 5 minutes to warm

the engine at 3,000 rpm with no load.-2. Snap the throttle and run the engine with the engine

speed in the range from idling to 4,000± 500 rpm.-3. Check the HO2S voltage with the Dr. H.

◆ Is the HO2S voltage 0.6 V or above at full openthrottle, and is it 0.4 V or below when the throttleis snapped back to the fully closed position?

YES - Check the fuel supply system. If it is normal,recheck with a new ECM.

NO - Go to the step 4.

5-5


4. HO2S inspection-1. Turn the ignition switch OFF. Disconnect the HO2S

4P connector and connect the battery between theNo. 3 (white +) and No. 4 (white -) terminals.

-2. Start the engine and run it for 3 minutes to warmthe engine at 3,000 rpm with no load.

-3. Snap the throttle and run the engine with the enginespeed in the range from idling to 4,000± 500 rpm.Check the voltage between the No. 1 (Black) andNo. 2 (Gray) terminals of the HO2S 4P sensor sideconnector.

◆ Is the voltage 0.6 V or above at full open throttle,and is it 0.4 V or below when the throttle issnapped back to the fully closed position?

YES - Go to the step 5.NO - Replace the HO2S.

5. HO2S circuit short-circuit inspection-1. Stop the engine and disconnect the ECM connector

B.-2. Check for continuity between the No. 2 (Black/yel-

low) terminal of the HO2S 4P wire harness side con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and HO2S.NO - Go to the step 6.

6. HO2S circuit open-circuit inspection-1. Check for continuity between the No. 2 (Black/yel-

low) terminal of the HO2S 4P wire harness side con-nector and the No. 1 (Black/yellow) terminal of theECM connector B.

◆ Is there continuity?YES - Go to the step 7.NO - Repair open between the ECM and HO2S.

7. HO2S ground (SG2) circuit open-circuit inspection-1. Connect the ECM connector B.-2. Check for continuity between the No. 1 (Green/red)

terminal of the HO2S wire harness side connectorand the body ground.

◆ Is there continuity?YES - Recheck with a new ECM.NO - Repair open between the ECM and HO2S.

5-6


View from the terminal side.

HO2S 4P CONNECTOR(Wire harness side)

View from the terminal side




ECM CONNECTOR B

View from the terminal side.

HO2S 4P CONNECTOR(Sensor side)

IGP (WHT)

SG2 (GRY)

SG2 (GRN/RED)

HO2S (BLK/YEL)

HO2S (BLK/YEL)

HO2S (BLK)

HO2S HTC (WHT)

●MAP (Manifold Absolute Pressure) SensorDTC 3-1: Low MAP sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the MAP sensor voltage with the Dr. H.

◆ Is there 0.23 ~ 4.50 V?YES - Temporary failure (Disappears)NO - Go to the step 2.

2. MAP sensor power (VCC1) circuit inspection-1. Turn the ignition switch OFF and disconnect the

MAP sensor 3P connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 3 (Brown/yel-

low) terminal and No. 1 (Green/red) terminal of theharness side 3P connector.

◆ Is there 4.75 ~ 5.25 V?YES - Go to the step 4.NO - Go to the step 3.

3. MAP sensor power (VCC1) circuit open-circuitinspection

-1. Turn the ignition switch OFF and disconnect theECM connector A.

-2. Check for continuity between the No. 3 (Brown/yel-low) terminal of the MAP sensor 3P wire harnessside connector and No. 13 (Brown/yellow) terminalof the ECM connector A.

◆ Is there continuity?YES - Go to the step 4.NO - Repair open between the MAP sensor and

ECM.

4. MAP sensor signal (MAP) circuit short-circuit inspection-1. Turn the ignition switch OFF and disconnect the

MAP sensor 3P connector.-2. Disconnect the ECM connector B.-3. Check for continuity between the No. 2 (White/red)

terminal of the wire harness side 3P connector andthe body ground.

◆ Is there continuity?YES - Repair short in wire harness between MAP

sensor and ECM.NO - Go to the step 5.

5. MAP sensor inspection-1. Connect the ECM connectors A and B and the MAP

sensor 3P connector.-2. Turn the ignition switch ON. Check the MAP sensor

voltage with the Dr. H.

◆ Is there 2.76 ~ 2.96 V?YES - Recheck with a new ECM.NO - Replace the MAP sensor.

5-7


MAP (WHT/RED)


MAP SENSOR 3P CONNECTOR(Wire harness side)



VCC1 (BRN/YEL)SG1 (GRN/RED)



ECM CONNECTOR A

VCC1 (BRN/YEL)

DTC 3-2: High MAP sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the MAP sensor voltage with the Dr. H.


2. MAP sensor signal (MAP) circuit inspection-1. Turn the ignition switch OFF and disconnect the

MAP sensor 3P connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 2 (White/red)

terminal and No. 1 (Green/red) terminal of the MAPsensor wire harness side 3P connector.


3. MAP sensor signal (MAP) circuit open-circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECM connector B.

-2. Check for continuity between the No. 2 (White/red)terminal of the MAP sensor wire harness side con-nector and the No. 11 (White/red) terminal of theECM connector B.


ECM.

4. MAP sensor ground (SG1) circuit open-circuitinspection

-1. Check for continuity between the No. 1 (Green/red)terminal of the MAP sensor wire harness side 3Pconnector and the body ground.


ECM.

5. MAP sensor inspection-1. Connect the ECM connector B and the MAP sensor

3P connector.-2. Turn the ignition switch ON and check the PB volt-

age with the Dr. H.

◆ Is there 2.76 ~ 2.96 V?YES - Recheck with a new ECM.NO - Replace the MAP sensor.

5-8




ECM CONNECTOR B

MAP (WHT/RED)



MAP (WHT/RED)SG1 (GRN/RED)



SG1 (GRN/RED)

●CKP (Crankshaft Position) SensorDTC 4-1: No crank pulse1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Start the engine and let it idle with no load.-3. Check the DTC with the Dr. H.

◆ Does DTC 4-1 appear on the tester?YES - Go to the step 2.NO - Temporary failure (Disappears)

2. CKP sensor inspection-1. Turn the ignition switch OFF and disconnect the

CKP sensor 2P connector.-2. Measure the resistance between the No. 1 (Blue)

terminal and No. 2 (White) terminal of the CKP sen-sor connector.

◆ Is there 1,500 ~ 2,500Ω?YES - Go to the step 3.NO - Replace the CKP sensor.

3. CKP sensor circuit open-circuit inspection-1. Connect the CKP sensor 2P connector.-2. Disconnect the ECM connector A.-3. Measure the resistance between the No. 5 (Blue)

and No. 24 (White) terminals of the ECM connectorA.

◆ Is there 1,500 ~ 2,500Ω?YES - Go to the step 4.NO - Repair open between the ECM and CKP

sensor.

4. CKP sensor circuit short-circuit inspection-1. Check for continuity between the No. 5 (Blue) termi-

nal of the ECM connector A and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and the CKP

sensor.NO - Recheck with a new ECM.

5-9



CKP SENSOR 2P CONNECTOR(Sensor side)

CKPM (WHT)CKPP (BLU)


ECM CONNECTOR A

CKPP (BLU)


CKPP (BLU)

CKPM (WHT)

ECM CONNECTOR A

DTC 4-2: Abnormal crank pulse1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.




2. CKP sensor inspection-1. Turn the ignition switch OFF and disconnect the

CKP sensor 2P connector.-2. Measure the resistance between the No. 1 (Blue)

terminal and No. 2 (White) terminal of the CKP sen-sor.

◆ Is there 1,500 ~ 2,500Ω?YES - Recheck with a new ECM.NO - Replace the CKP sensor.

●ECT (Engine Coolant Temperature) Sensor 1(ECT Sensor 1: Identified as ECT Sensor in the baseshop manual.)

DTC 6-1: Low ECT sensor 1 voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the ECT sensor 1 voltage with the Dr. H.


2. ECT sensor 1 (TE) circuit short-circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECM connector B and ECT sensor 1 connector.-2. Check for continuity between the No. 2 (Red/white)

terminal of the ECT sensor 1 wire harness side 2Pconnector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and ECT sen-

sor 1.NO - Go to the step 3.

5-10



ECT SENSOR 12P CONNECTOR(Wire harness side)

TE (RED/WHT)View from the terminal side

CKP SENSOR 2P CONNECTOR(Sensor side )

CKPP (BLU) CKPM (WHT)

3. ECT sensor 1 inspection-1. Measure the resistance between the No. 1 terminal

and No. 2 terminal of the ECT sensor 1.

◆ Is there the appropriate resistance for the enginecoolant temperature?

YES - Recheck with a new ECM.NO - Replace the ECT sensor 1.

DTC 6-2: High ECT sensor 1 voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.




2. ECT sensor 1 circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECT sensor 1 connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 2 (Red/white)

and the No. 1 (Green/red) terminals of the ECT sen-sor 1 wire harness side 2P connector.


5-11



ECT SENSOR 12P CONNECTOR(Sensor side)

ENGINE COOLANT TEMPERATURE

RE

SIS

TAN

CE



TE (RED/WHT)SG2 (GRN/RED)

3. ECT sensor 1 ground (SG2) circuit open-circuitinspection

-1. Turn the ignition switch OFF.-2. Check for continuity between the No. 1 (Green/red)


◆ Is there continuity?YES - Go to the step 4.NO - Repair open between the ECM and ECT sen-

sor 1.

4. ECT sensor 1 (TE) circuit open-circuit inspection-1. Disconnect the ECM connector B.-2. Check for continuity between the No. 2 (Red/white)

terminal of the ECT sensor 1 wire harness side 2Pconnector and the No. 21 (Red/white) terminal of theECM connector B.

◆ Is there continuity?YES - Go to the step 5.NO - Repair open between the ECM and ECT sen-

sor 1.

5. ECT sensor 1 inspection-1. Measure the resistance between the No. 1 terminal

and No. 2 terminal of the ECT sensor 1.



5-12




ECM CONNECTOR B

TE (RED/WHT)



SG2 (GRN/RED)


RE

SIS

TAN

CE



●TP (Throttle Position) SensorDTC 7-1: Low TP sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the TP sensor voltage with the Dr. H.


2. TP sensor power (VCC2) circuit inspection-1. Turn the ignition switch OFF and disconnect the TP

sensor connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 1 (Brown/

white) and No. 3 (Green/red) terminals of the TPsensor wire harness side 3P connector.


3. TP sensor power (VCC2) circuit open-circuitinspection


-2. Check for continuity between the No. 1 (Brown/white) terminal of the TP sensor wire harness side3P connector and the No. 26 (Brown/white) terminalof the ECM connector A.

◆ Is there continuity?YES - Go to the step 4.NO - Repair open between the TP sensor and

ECM.

4. TP sensor signal (TPS) circuit open-circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECM connector B.-2. Check for continuity between the No. 2 (Red/black)

terminal of the TP sensor wire harness side 3P con-nector and the No. 12 (Red/black ) terminal of theECM connector B.


ECM.

5-13



TP SENSOR 3P CONNECTOR(Wire harness side)

VCC2 (BRN/WHT) SG2 (GRN/RED)



ECM CONNECTOR A

VCC2(BRN/WHT)



ECM CONNECTOR B

TPS(RED/BLK)

5. TP sensor signal (TPS) circuit short-circuit inspection-1. Check for continuity between the No. 2 (Red/black)

terminal of the TP sensor wire harness side 3P con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the TP sensor and

ECM.NO - Go to the step 6.

6. TP sensor inspection-1. Connect the ECM connectors A and B and the TP

sensor 3P connector.-2. Turn the ignition switch ON and check the TP sen-

sor voltage with the Dr. H.

◆ Is there the specified voltage with the throttlefully open and fully closed?Specified voltage:BF200A, BF225A:

Fully open: 4.49 ~ 4.85 VFully closed: 0.44 ~ 0.56 V

BF175A:Fully open: 2.55 ~ 3.15 VFully closed: 0.44 ~ 0.56 V

YES - Recheck with a new ECM.NO - Replace the TP sensor.

DTC 7-2: High TP sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the TP sensor voltage with the Dr. H.


2. TP sensor ground (SG2) circuit open-circuitinspection

-1 Turn the ignition switch OFF and disconnect the TPsensor 3P connector.

-2. Check for continuity between the No. 3 (Green/red)terminal of the TP sensor wire harness side 3P con-nector and the body ground.


ECM.

3. TP sensor inspection-1. Measure the resistance between the No. 1 terminal

and No. 3 terminal, and between No. 1 terminal andNo. 2 terminal of the TP sensor.

5-14




SG2(GRN/RED)



TPS (RED/BLK)


TP SENSOR 3P CONNECTOR(Sensor side)

◆ Is there the specified resistance?Specified resistance:

Between No. 1 and 3 terminals: BF200A, BF225A: 4.0 ~6.0 kΩBF175A: 4.0 ~ 6.0 kΩ

Between No. 1 and 2 terminals:BF200A, BF225A:Fully open: 3.6 ~ 5.8 kΩFully closed: 0.4 ~ 1.0 kΩBF175A:Fully open: 2.0 ~ 3.8 kΩFully closed: 0.4 ~ 1.0 kΩ

YES - Recheck with a new ECM.

NO - Replace the TP sensor.

●CMP (Camshaft Position) 1 Sensor(CMP 1 Sensor: Identified as TDC 1 Sensor in the baseshop manual.)

DTC 8-1: No CMP 1 pulse1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.




2. CMP 1 sensor inspection-1. Turn the ignition switch OFF and disconnect the

CMP sensor 4P connector.-2. Measure the resistance between the No. 2 (Red)

and No. 1 (Green) terminals of the CMP sensor.

◆ Is there 1,500 ~ 2,500Ω?YES - Go to the step 3.NO - Replace the CMP sensor.

3. CMP 1 sensor circuit short-circuit inspection-1. Disconnect the ECM connector A.-2. Check for continuity between the No. 2 (Green) ter-

minal of the CMP sensor wire harness side 4P con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and CMP 1

sensor.NO - Go to the step 4.

5-15



CMP SENSOR 4P CONNECTOR(Sensor side)


CMP SENSOR 4P CONNECTOR(Wire harness side)

TDC1P （GRN）

4. CMP1 sensor circuit open-circuit inspection-1. Connect the CMP sensor 4P connector.-2. Measure the resistance between the No. 6 (Green)

and No. 25 (Red) terminals of the ECM connector A.

◆ Is there 1,500 ~ 2,500Ω?YES - Recheck with a new ECM.NO - Repair open between the CMP 1 sensor and

ECM.

DTC 8-2: Abnormal CMP 1 pulse1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.-2. Start the engine and let it idle with no load.-3. Check the DTC with the Dr. H.



CMP sensor 4P connector.-2. Measure the resistance between the No. 2 (Red)

and No. 1 (Green) terminals of the CMP sensor.

◆ Is there 1,500 ~ 2,500Ω?YES - Recheck with a new ECM.NO - Replace the CMP sensor.

5-16





ECM CONNECTOR A

TDC1M (RED)

TDC1P (GRN)

● IAT (Intake Air Temperature) SensorDTC 10-1: Low IAT sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the IAT sensor voltage with the Dr. H.


2. IAT sensor (IAT) circuit short-circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECM connector B and IAT sensor 2P connector.-2. Check for continuity between the No. 2 (Red/yellow)

terminal of the IAT sensor wire harness side 2P con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and IAT sen-

sor.NO - Go to the step 3.

3. IAT sensor inspection-1. Measure the resistance between the No. 1 and No.

2 terminals of the IAT sensor.

◆ Is there the appropriate resistance for the intakeair temperature?

YES - Recheck with a new ECM.NO - Replace the IAT sensor.

5-17



IAT SENSOR 2P CONNECTOR(Wire harness side)

IAT (RED/YEL) INTAKE AIR TEMPERATURE


IAT SENSOR 2P CONNECTOR(Sensor side)

RE

SIS

TAN

CE

DTC 10-2: High IAT sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the IAT sensor voltage with the Dr. H.


2. IAT sensor circuit inspection-1. Turn the ignition switch OFF and disconnect the IAT

sensor 2P connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 2 (Red/yellow)

and No. 1 (Green/red) terminals of the IAT sensorwire harness side 2P connector.


3. IAT sensor ground (SG2) circuit open-circuit inspection-1. Turn the ignition switch OFF.-2. Check for continuity between the No 1 (Green/red)

terminal of the IAT sensor wire harness side 2P con-nector and the body ground.

◆ Is there continuity?YES - Go to the step 4.NO - Repair open between the IAT sensor and

ECM.

4. IAT sensor (IAT) circuit open-circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECM connector B.-2. Check for continuity between the No. 2 (Red/yellow)

terminal of the IAT sensor wire harness side 2P con-nector and No. 20 (Red/yellow) terminal of the ECMconnector B.

◆ Is there continuity?YES - Go to the step 5.NO - Repair open between the ECM and IAT sen-

sor.

5. IAT sensor inspection-1. Measure the resistance between No. 1 terminal and

No. 2 terminal of the IAT sensor.

◆ Is there the appropriate resistance for the intakeair temperature?

YES - Recheck with a new ECM.NO - Replace the IAT sensor.

5-18




IAT (RED/YEL)SG2 (GRN/RED)



SG2 (GRN/RED)



ECM CONNECTOR B

IAT (RED/YEL)


IAT SENSOR 2P CONNECTOR(Sensor side)

RE

SIS

TAN

CE

INTAKE AIR TEMPERATURE

●BARO (Barometric Pressure) SensorDTC 13-1: Low BARO sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the BARO sensor voltage with the Dr. H.


2. BARO sensor power (VCC2) circuit inspection-1. Turn the ignition switch OFF and disconnect the

BARO sensor 3P connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 3 (Brown/

white) and No. 1 (Green/red) terminals of the BAROsensor wire harness side 3P connector.


3. BARO sensor power source (VCC2) circuit open-circuit inspection


-2. Check for continuity between the No. 3 (Brown/white) terminal of the BARO sensor wire harnessside 3P connector and No. 26 (Brown/white) termi-nal of the ECM connector A.

◆ Is there continuity?YES - Go to the step 4.NO - Repair open between the ECM and BARO

sensor.

4. BARO sensor signal (BARO) circuit short-circuitinspection

-1. Disconnect the ECM connector B.-2. Check for continuity between the No. 2 (White/blue)

terminal of the BARO sensor wire harness side 3Pconnector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and BARO


5. BARO sensor inspection-1. Connect the BARO sensor 3P connector and ECM

connectors A and B.-2. Turn the ignition switch ON and check the BARO

sensor voltage with the Dr. H.

◆ Is there 2.76 ~ 2.96 V?YES - Recheck with a new ECM.NO - Replace the BARO sensor and recheck.

5-19



BARO SENSOR 3P CONNECTOR(Wire harness side)

VCC2 (BRN/WHT)SG2 (GRN/RED)



BARO (WHT/BLU)


ECM CONNECTOR A


VCC2 (BRN/WHT)

DTC 13-2: High BARO sensor voltage1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the BARO sensor voltage with the Dr. H.


2. BARO sensor signal (BARO) circuit inspection-1. Turn the ignition switch OFF and disconnect the

BARO sensor 3P connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 2 (White/

blue) and No. 1 (Green/red) terminals of the BAROsensor wire harness side 3P connector.


3. BARO sensor signal (BARO) circuit open-circuitinspection

-1. Turn the ignition switch OFF and disconnect theECM connector B.

-2. Check for continuity between the No. 2 (White/blue)terminal of the BARO sensor wire harness side 3Pconnector and No. 19 (White/blue) terminal of theECM connector B.


sensor.

4. BARO sensor ground (SG2) circuit open-circuitinspection

-1. Check for continuity between the No. 1 (Green/red)terminal of the BARO sensor wire harness side 3Pconnector and the No. 34 (Green/Red) terminal ofthe ECM connector B.


sensor.

5. BARO sensor inspection-1. Connect the BARO sensor 3P connector and ECM

connector B.-2. Turn the ignition switch ON and measure the BARO

sensor voltage with the Dr. H.

◆ Is there 2.76 ~ 2.96 V?YES - Recheck with a new ECM.NO - Replace the BARO sensor and recheck.

5-20



ECM CONNECTOR B


SG2 (GRN/RED)


ECM CONNECTOR BBARO SENSOR 3P CONNECTOR(Wire harness side)

BARO(WHI/BLU)



SG2 (GRN/RED)

BARO (WHT/BLU)

● IAC (Idle Air Control) ValveDTC 14-1: Abnormal IAC valve current1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Start the engine and let it idle with no load.-3. Check the engine speed with the Dr. H.

◆ Is it 650 rpm or above?YES - Temporary failure (Disappears)NO - Go to the step 2.

2. IAC valve open-circuit inspection-1. Turn the ignition switch OFF and disconnect the IAC

valve 2P connector.-2. Measure the resistance between No. 1 and No. 2

terminals of IAC valve.

◆ Is there 8 ~ 12Ω?YES - Go to the step 3.NO - Replace the IAC valve.

3. IAC valve short-circuit inspection-1. Check for continuity between the No. 1 terminal of the

IAC valve and body ground, and No. 2 terminal of theIAC valve and body ground.

◆ Is there continuity?YES - Replace the IAC valve.NO - Go to the step 4.

4. IAC valve circuit open-circuit inspection-1. Connect the IAC valve 2P connector.-2. Disconnect the ECM connector B.-3. Measure the resistance between the No. 17 (Green/

white) and No. 25 (Black) terminals of the ECM con-nector B.

◆ Is there 8 ~ 12Ω?YES - Go to the step 5.NO - Repair open between the ECM and IAC

valve.

5. IAC valve circuit short-circuit inspection-1. Check for continuity between the No. 17

(Green/white) terminal of the ECM connector B andthe body ground, and between the No. 25 (Black)terminal of the ECM connector B and the bodyground.

◆ Is there continuity?YES - Repair short between the ECM and IAC

valve.NO - Recheck with a new ECM.

5-21



IAC VALVE 2P CONNECTOR(IAC valve side)


IAC VALVE 2P CONNECTOR(IAC valve side)


ECM CONNECTOR B

IACVP(GRN/WHT)

IACVM(BLK)


ECM CONNECTOR B

IACVP(GRN/WHT)

IACVM(BLK)

●VTEC Spool Solenoid Valve (BF225A only)DTC 21-1: Abnormal output of VTEC spoolsolenoid valve1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Start the engine and run the engine for 5 minutes towarm up the engine at 3,000 rpm under no load.

-3. Disconnect the neutral switch 2P connector.-4. Raise the engine speed slowly and run it at 4,500

rpm for a few seconds.-5. Recheck the DTC with the Dr. H.


2. Spool solenoid valve inspection-1. Turn the ignition switch OFF and disconnect the

spool solenoid valve connector.-2. Measure the resistance between the spool solenoid

valve terminal and the body ground.

◆ Is there 12 ~ 18Ω?YES - Go to the step 3.NO - Replace the spool solenoid valve.

3. Spool solenoid valve circuit short-circuit inspection-1. Disconnect the ECM connector A.-2. Check for continuity between the No. 15 (Green/yel-

low) terminal of the ECM connector A and the bodyground.

◆ Is there continuity?YES - Repair short between the ECM and spool

solenoid valve.NO - Go to the step 4.

4. Spool solenoid valve circuit open-circuit inspection-1. Connect the spool solenoid valve connector.-2. Measure the resistance between the No. 15

(Green/yellow) terminal of the ECM connector A andthe body ground.

◆ Is there 12 ~ 18Ω?YES - Recheck with a new ECM.NO - Repair open between the ECM and spool

solenoid valve.

5-22



VTEC SPOOL SOLENOID VALVE CONNECTOR(VTEC spool solenoid valve side)


ECM CONNECTOR A

VTS (GRN/YEL)


ECM CONNECTOR A

VTS (GRN/YEL)

●Knock SensorDTC 23-1: Abnormal knock sensor output1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Start the engine and run the engine for about 5 min-utes to warm up the engine at 5,000 rpm or moreunder no load until the engine temperature is over85°C (185°F).

-3. Lower the engine speed gradually and run it at3,000 ~ 4,000 rpm for 10 seconds.



2. Knock sensor circuit open-circuit inspection-1. Turn the ignition switch OFF and disconnect the

knock sensor connector and the ECM connector A.-2. Check for continuity between the No. 1 (Red/blue)

terminal of the knock sensor wire harness side con-nector and the No. 7 (Red/blue) terminal of the ECMconnector A.

◆ Is there continuity?YES - Go to the step 3.NO - Repair open between the knock sensor and

ECM.

3. Knock sensor circuit short-circuit inspection-1. Check for continuity between the No. 7 (Red/Blue)

terminal of the ECM connector A and the bodyground.

◆ Is there continuity?YES - Repair short between the ECM and knock


4. ECM inspection-1. Replace the knock sensor with a new one, and per-

form the reappearance test.

◆ Does DTC 23-1 appear on the tester?YES - Recheck with a new ECM.NO - Completion (faulty knock sensor).

5-23


KS (RED/BLU)


ECM CONNECTOR A

KNOCK SENSOR CONNECTOR(Wire harness side)

KS (RED/BLU)


ECM CONNECTOR A

●HO2S (Heated Oxygen Sensor) HeaterDTC 41-2: Abnormal HO2S heater1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Start the engine and run the engine for 5 minutes towarm up the engine at 3,000 rpm under no load.



2. HO2S heater inspection-1. Turn the ignition switch OFF and disconnect the

HO2S 4P connector.-2. Measure the resistance between the No. 3 (White)

and No. 4 (White) terminals of the HO2S heater.

◆ Is there 10 ~ 40Ω?YES - Go to the step 3.NO - Replace the HO2S.

3. Battery power (IGP) circuit open-circuit inspection-1. Turn the ignition switch ON.-2. Measure the voltage between the No. 3 (Yellow/

black) terminal of the HO2S wire harness side 4Pconnector and the body ground.

◆ Is there battery voltage?YES - Go to the step 4.NO - Replace the HO2S sensor.

4. HO2S heater (HO2S HTC) circuit short-circuitinspection


-2. Check for continuity between the No. 4 (White/black) terminal of the HO2S wire harness side 4Pconnector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and HO2S.NO - Go to the step 5.

5. HO2S heater circuit open-circuit inspection-1. Check for continuity between the No. 22 (White/

black) terminal of the ECM connector A and the No.4 (White/black) terminal of the HO2S wire harnessside 4P connector.

◆ Is there continuity?YES - Recheck with a new ECM.NO - Repair open between the ECM and HO2S.

5-24



HO2S 4P CONNECTOR(Sensor side)

IGP (WHT)HO2S HTC (WHT)



IGP (YEL/BLK)



HO2S HTC (WHT/BLK)

HO2S HTC(WHT/BLK)



ECM CONNECTOR A

●CMP (Camshaft Position) 2 Sensor(CMP 2 Sensor: Identified as TDC 2 Sensor in the baseshop manual.)

DTC 58-1: No CMP 2 pulse1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Start the engine and let it idle under no load.-3. Check the DTC with the Dr. H.



CMP sensor 4P connector.-2. Measure the resistance between the No. 4 (Black)

and No 3 (Yellow) terminals of the CMP sensor side4P connector.

◆ Is there 1,500 ~ 2,500Ω?YES - Go to the step 3.NO - Replace the CMP sensor.

3. CMP 2 sensor circuit open-circuit inspection-1. Connect the CMP sensor 4P connector.-2. Disconnect the ECM connector A.-3. Measure the resistance between the No. 12 (Yellow)

and No. 18 (Black) terminals of the ECM connector A.

◆ Is there 1,500 ~ 2,500Ω?YES - Go to the step 4.NO - Repair open between the CMP 2 sensor and

ECM.

4. CMP 2 sensor circuit short-circuit inspection-1. Check for continuity between the No. 4 (Yellow) ter-

minal of the CMP sensor wire harness side 4P con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the ECM and CMP 2

sensor.NO - Recheck with a new ECM.

5-25




TDC2M (BLK)TDC2P (YEL)


ECM CONNECTOR ATDC2M(BLK)

TDC2P(YEL)


CMP SENSOR 4P CONNECTOR(Wire harness side)

TDC2P (YEL)

DTC 58-2: Abnormal CMP 2 pulse1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.





CMP sensor 4P connector.-2. Measure the resistance between the No. 4 (Black)

and No. 3 (Yellow) terminals of the CMP sensor side4P connector.

◆ Is there 1,500 ~ 2,500Ω?YES - Recheck with a new ECM.NO - Replace the CMP sensor.

●ECT (Engine Coolant Temperature) Sensor 2(ECT Sensor 2: Identified as Overheat Sensor 1 in thebase shop manual.)





2. ECT sensor 2 signal (TOH1) circuit short-circuitinspection

-1. Turn the ignition switch OFF and disconnect theECT sensor 2 connector and the ECM connector B.

-2. Check for continuity between the No. 2 (Red/black)terminal of the ECT sensor 2 wire harness side con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the ECT sensor 2 and


5-26




TDC2M (BLK)TDC2P (YEL)



TOH1 (RED/BLK)

3. ECT sensor 2 inspection-1. Measure the resistance between the No. 1 and No. 2

terminals of the ECT sensor 2.





-2. Turn the ignition switch ON.-3. Measure the ECT sensor 2 voltage with the Dr. H.


2. ECT sensor 2 circuit inspection-1. Turn the ignition switch OFF and disconnect the 2P

connector of the ECT sensor 2.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 2 (Red/black)

and No. 1 (Green/red) terminals of the ECT sensor2 wire harness side 2 P connector.


5-27



ECT SENSOR 2CONNECTOR(Sensor side)

RE

SIS

TAN

CE


TOH1 (RED/BLK)SG2 (GRN/RED)



3. ECT sensor 2 signal (TOH1) circuit open-circuitinspection


-2. Check for continuity between the No. 2 (Red/black)terminal of the ECT sensor 2 wire harness side con-nector and the No. 28 (Red/black) terminal of theECM connector B.

◆ Is there continuity?YES - Go to the step 4.NO - Repair open between the ECT sensor 2 and

the ECM.


-1. Connect the ECM connector B.-2. Check for continuity between the No. 1 (Green/red)



ECM.

5. ECT sensor 2 inspection-1. Measure the resistance between the No. 1 and No.

2 terminals of the ECT sensor 2.



5-28


SG2 (GRN/RED)







ECM CONNECTOR B

TOH1 (RED/BLK)

RE

SIS

TAN

CE


●ECT (Engine Coolant Temperature) Sensor 3(ECT Sensor 3: Identified as Overheat Sensor 2 in thebase shop manual.)



-2. Turn the ignition switch ON.-3. Measure the ECT sensor 3 voltage with the Dr. H.


2. ECT sensor 3 signal (TOH2) circuit short-circuitinspection

-1. Turn the ignition switch OFF and disconnect theECT sensor 3 connector and ECM connector B.

-2. Check for continuity between the No. 2 (Red) termi-nal of the ECT sensor 3 wire harness side 2P con-nector and the body ground.

◆ Is there continuity?YES - Repair short between the ECT sensor 3 and






5-29




TOH2 (RED)



RE

SIS

TAN

CE






2. ECT sensor 3 circuit inspection-1. Turn the ignition switch OFF and disconnect the

ECT sensor 3 connector.-2. Turn the ignition switch ON.-3. Measure the voltage between the No. 2 (Red) and

No. 1 (Green/red) terminals of the ECT sensor 3wire harness side 2P connector.


3. ECT sensor 3 signal (TOH2) circuit open-circuitinspection


-2. Check for continuity between the No. 2 (Red) terminalof the ECT sensor 3 wire harness side connector andthe No. 29 (Red) terminal of the ECM connector B.


ECM.


-1. Connect the ECM connector B.-2. Check for continuity between the No. 1 (Green/red)



ECM.

5-30


TOH2 (RED)SG2 (GRN/RED)




ECM CONNECTOR BECT SENSOR 32P CONNECTOR(Wire harness side)

TOH2 (RED)

SG2 (GRN/RED)







●EOP (Engine Oil Pressure) SwitchDTC 142-1: Abnormal EOP switch signal1. Reappearance test-1. Connect the Dr. H (page 5-1) and clear the DTC.


-2. Turn the ignition switch ON.-3. Check the EOP switch signal with the Dr. H.

◆ Is there the OFF signal?YES - Temporary failure (Disappears)NO - Go to the step 2.

2. EOP switch ground (SG2) circuit open-circuitinspection

-1. Turn the ignition switch OFF and disconnect theEOP switch 2P connector.

-2. Check for continuity between the No. 2 (Green/red)terminal of the EOP switch wire harness side 2Pconnector and the body ground.

◆ Is there continuity?YES - Go to the step 3.NO - Repair open between the EOP switch and

ECM.

5-31


RE

SIS

TAN

CE





EOP SWITCH2P CONNECTOR(Wire harness side)

SG2 (GRN/RED)

3. EOP switch signal (OPSH) circuit inspection-1. Turn the ignition switch ON.-2. Measure the voltage between the No. 1 (Yellow/red)

and No. 2 (Green/red) terminals of the EOP switchwire harness side 2P connector.

◆ Is there the battery voltage?YES - Go to the step 4.NO - Repair open between the EOP switch and

ECM.

4. EOP switch inspection-1. Check for continuity between the No. 1 and No. 2

terminals of the EOP switch.

◆ Is there continuity?YES - Replace the EOP switch.NO - Recheck with a new ECM.

5-32



EOP SWITCH2P CONNECTOR(Wire harness side)

OPSH (YEL/RED)

SG2 (GRN/RED)


EOP SWITCH 2P CONNECTOR(Switch side)

SG2 (GRN/RED)

OPSH (YEL/RED)

2008

66ZY200V

2008.02

Documents

BF175A(En)66ZY200V - BRP Diagnostics · This supplement describes the troubleshooting using ... FLYWHEEL/OIL PUMP 10 ... (High voltage) • MAP sensor • ECM