106-111 Ect and a-t Indicator

892019 106-111 Ect and a-t Indicator

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2005 SCION xB (EWD579U)

106

ECT and AT Indicator

15A

EFI

From Power Source System (See Page 44)

1

10A

STOP

1B8

6 0 A M A I N

15AAM2

1

1

2

1

1O1

1A7

1O6

1A3

2 3

1 5

1 1

1 1

A1

+B

1A11

1H8

EB

A3 A18 A20

1P5

1H12

1P3

1H14

IE

7 5A

OBD

1P4

IA114

1P17

1O2

1

2

1B2

B19

16

W -

R

BAT

SIL TC

7 13

P -

B W B

- Y

B

W -

R

W -

R

B -

R

B -

Y

EFIRelay

Battery

B -

L

B- R

B -

Y

W -

B

W -

B

W -

B

W -

B

G -

Y

G -

R

S 8

G -

W

STP

5 6

I10

W -

B

BATT SIL TC

AM2 IG2

ST2

2

1

3

F 8

D8

NSW

4

B

1O7

B

B

1H2

1E1

1P7

B29

ODMS

4

IF115

D9

STA

I 5

D5 C6

ED

D7

E03 E02 E1

B R

B R

B R

B R

B R

SG CG

5 4

B R

P

N

9

6

1E6

B

B

B -

Y

G -

B

B -

Y

W- B

B R A 7

B R

EC

28 D

B R

E01

7 C

A 3

B R

BR

I 6

1P

13

1G8

B -

R

B- R

IF113

B

E 3(A) E 4(B) E 5(C) E 6(D)

EC

B R

P - B W

B -

Y

P a r k

N e u

t r a l

P o s

i t i o n S W

O D M a

i n S W

Engine Control Module

F u s

i b l e L i n k

B l o c

k

Ignition SW

StopLight SW

2

Data LinkConnector 3

D 1




107

C30D13C16C17D12D14D15

5 10 2 3 8 4 1

S1 S2 ST SLT+ SLSLT- OIL

W -

G

W -

R

B -

R

W -

L W G

Y -

G

D27 D35

2

1 3

C18 C21C28

I 5I 5

C19

E 1

R B

NT+ NT-

E2 VC VTA THW

R -

W Y -

R R -

L

B R

B R

B R

BR

T 1 E 2

2S1 S2 ST SLT+ OTSLT-

B Y G L G O G

R

O

6

E2

1

B17

SPD

B7

ODLP

1H3

1F6

G- O

V- W

V -

W G -

O

B11B10B9B8

G -

W

BR

RD2L

SL

W

B- RB- R

E 3(A) E 4(B) E 5(C) E 6(D)

R -

W R -

Y

G -

R

G- W

G- R

R-Y

R- W

1

2

T 2

Electronically ControlledTransmission Solenoid

E n g

i n e C o o

l a n

t

T e m p

S e n s o r


ThrottlePosition Sensor

T u r b

i n e

S p e e

d S e

n s o r

VTA

E2

VC




108


7 IF1

R -

Y

R R -

W R -

Y

G -

R

R - Y

G -

W G R

IF16 IF15

1E9 1E4 1E3

1G16 1G17 1G18

R - Y

G R G -

W R -

Y

G -

R

G -

W

2 1E

1G1

19 8

G R

6 1H

S p e e

d o m e

t e r

RL

4

2L

8

4

G R

16 IF1

LL

1

R -

B

R -

B

R -

B

R -

B

13 1G

V -

W

PL

5 7

R -

W 9 IF1

10AGAUGE


1E5

R -

W

IF1

G- O

V- W

G -

O

DLNL

3

2

1H

B- R

O D O F F

1H161H13

40 6 7 8 9 10 11 23

12 29

G- W

G- R

R- Y

R- W

IF1

B -

R

AE

BE

G - R

R

G - R

G - W

G - W

R - W

R

A 3

J 6 ( A ) J 7 ( B )

R- B

RB

C 6

AT Indicator Light SW

Combination Meter

J u n c t i o n

C o n n e c

t o r

P R N D 2 L

B R

21

B R

IF

28

W -

R

IA113

W -

R

12

SP1

Skid Control ECUwith Actuator

S 3

CPU




109

Previous automatic transaxle have selected each gear shift using the mechanically controlled throttle hydraulic pressuregovernor hydraulic pressure and lock-up hydraulic pressure The electronically controlled transmission however electricallycontrols the line pressure and lock-up pressure etc through the solenoid valve Engine control module controls eachsolenoid valve based on the input signals from each sensor which makes smooth driving possible by shift selection for eachgear that is most appropriate to the driving conditions at that time

1 Gear Shift Operation

During driving the engine control module selects the shift for each gear which is most appropriate to the driving conditionsbased on input signals from the engine coolant temp sensor to TERMINAL THW of the engine control module and also theinput signals to TERMINAL NT+ of the engine control module from the turbine speed sensor devoted to the direct clutchCurrent is then output to the electronically controlled transmission solenoid When shifting to 1st gear current flows fromTERMINAL S1 of the engine control module to TERMINAL 5 of the electronically controlled transmission solenoid toGROUND and from TERMINAL S2 of the engine control module to TERMINAL 10 of the electronically controlledtransmission solenoid to GROUND and continuity to solenoids No1 and No2 causes the shiftFor the 2nd gear current flows from TERMINAL S1 of the engine control module to TERMINAL 5 of the electronicallycontrolled transmission solenoid to GROUND and continuity to the solenoid No1 causes the shiftFor the 3rd gear there is no continuity to either No1 or No2 solenoidShifting into 4th gear (Overdrive) takes place when current flows from TERMINAL S2 of the engine control module toTERMINAL 10 of the electronically controlled transmission solenoid to GROUND and continuity to the solenoid No2 causesthe shift

2 Lock-Up OperationWhen the engine control module judges from each signal that lock-up operation conditions have been met current flowsfrom TERMINAL SL of the engine control module to TERMINAL 4 of the electronically controlled transmission solenoid toGROUND causing continuity to the lock-up solenoid and causing lock-up operation

3 Clutch Pressure Control

The electronically controlled transmission solenoid is controlled by the current from TERMINAL SL of the engine controlmodule and controls the accumulator hydraulic pressureAs a result the clutch to hydraulic pressure is adjusted precisely and allows stable shift change

4 Line Pressure Control

The electronically controlled transmission solenoid is controlled by the current from TERMINAL SLT+ of the engine controlmodule and controls the throttle hydraulic pressureAs a result the line pressure can be controlled precisely and the to hydraulic pressure is adjusted according to the shiftchange condition and allows smooth shift change

5 Shifting Control in UphillDownhill Traveling

This system determines whether the vehicle is traveling on an incline or decline from the throttle opening angle vehicleacceleration condition and brake pedal operation and controls the shift up to OD to allow smooth driving

6 Clutch to Clutch Control

When shifting from the 3rd gear to the 4th gear the current from the engine control module TERMINAL ST controls theelectronically controlled transmission solenoid to control the drain orifice hydraulic pressure (Switch orifice) Theelectronically controlled transmission solenoid is also controlled by the current from the engine control module TERMINALSLT+ to adjust the hydraulic pressure precisely which ensures smooth shifting

7 Stop Light SW Circuit

If the brake pedal is depressed (Stop light SW on) when driving in lock-up condition a signal is input to TERMINAL STP ofthe engine control module the engine control module operates and continuity to the lock-up solenoid is cut

8 Overdrive Circuitlowast Overdrive on

When the engine is turned on from ignition off the engine control module turns the OD on When the OD main SW ispushed while the OD is off a signal is input into TERMINAL ODMS of the engine control module and the OD is turnedon by the engine control module In this case the engine control module controls the gear shift according to the vehiclersquosdriving condition using the OD range At this time the OD off indicator light is off

lowast Overdrive offWhen the OD main SW is pushed while the OD is on a signal is input into TERMINAL ODMS of the engine controlmodule and the OD is turned off At this time the current flows through the OD off indicator light to TERMINAL ODLP ofthe engine control module As a result the OD off indicator light turns on and the engine control module controls the gearshift according to the vehiclersquos driving condition without using the OD range

System Outline




110


E3 (A) E4 (B) E5 (C) E6 (D) Engine Control Module

BATT-E1 Always approx 9-14 volts+B-E1 9-14 volts with the ignition SW on and the engine stopping

NSW-E1 9-14 volts with the ignition SW at ST position and the shift lever except P and N position0-3 volts with the ignition SW at ST position and the shift lever in P or N position

STA-E1 60 volts or more with the engine cranking

STP-E1 75-14 volts with the brake pedal depressedS1-E1 0-15 volts with the shift lever in N position and the vehicle stopping 9-14 volts with the shift lever in D position and the vehicle stopping

S2-E1 0-15 volts with the vehicle stoppingTHW-E1 02-10 volts with the engine idling and the engine coolant temp 60 degC (140 degF) - 120 degC (248 degF)

SL-Ground Pulse generation with the engine idling

A3 AT Indicator Light SW

3-2 Closed with the shift lever in R position3-7 Closed with the shift lever in D position3-4 Closed with the shift lever in 2 position3-8 Closed with the shift lever in L position3-1 Closed with the shift lever in P position3-5 Closed with the shift lever in N position

Parts Location

Code See Page Code See Page Code See Page

A3 28 E3 A 30 J6 A 31

A7 30 E4 B 30 J7 B 31

C6 30 E5 C 30 S3 29

D1 30 E6 D 30 S8 31

E1 28 F8 28 T1 29

E2 28 I10 30 T2 29

Relay Blocks

Code See Page Relay Blocks (Relay Block Location)

1 22 Engine Room RB (Engine Compartment Left)

Junction Block and Wire Harness Connector

Code See Page Junction Block and Wire Harness (Connector Location)

1A

1B24 Engine Room Main Wire and Instrument Panel JB (Lower Finish Panel)

1E

1F

1G

1H25 Instrument Panel Wire and Instrument Panel JB (Lower Finish Panel)

1O

1P

Connector Joining Wire Harness and Wire Harness

Code See Page Joining Wire Harness and Wire Harness (Connector Location)

IA1 36 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)

IF1 38 Engine Wire and Instrument Panel Wire (Behind the Glove Box)

Service Hints




111

Ground Points

Code See Page Ground Points Location

EB 34 Front Left Fender Apron

EC

ED34 Engine Block

IE 36 Left Kick Panel

IF 36 Instrument Panel Brace LH

Splice Points

Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points

I5 38 Engine Wire I6 38 Engine Wire




107

C30D13C16C17D12D14D15

5 10 2 3 8 4 1

S1 S2 ST SLT+ SLSLT- OIL

W -

G

W -

R

B -

R

W -

L W G

Y -

G

D27 D35

2

1 3

C18 C21C28

I 5I 5

C19

E 1

R B

NT+ NT-

E2 VC VTA THW

R -

W Y -

R R -

L

B R

B R

B R

BR

T 1 E 2

2S1 S2 ST SLT+ OTSLT-

B Y G L G O G

R

O

6

E2

1

B17

SPD

B7

ODLP

1H3

1F6

G- O

V- W

V -

W G -

O

B11B10B9B8

G -

W

BR

RD2L

SL

W

B- RB- R

E 3(A) E 4(B) E 5(C) E 6(D)

R -

W R -

Y

G -

R

G- W

G- R

R-Y

R- W

1

2

T 2

Electronically ControlledTransmission Solenoid

E n g

i n e C o o

l a n

t

T e m p

S e n s o r


ThrottlePosition Sensor

T u r b

i n e

S p e e

d S e

n s o r

VTA

E2

VC




108


7 IF1

R -

Y

R R -

W R -

Y

G -

R

R - Y

G -

W G R

IF16 IF15

1E9 1E4 1E3

1G16 1G17 1G18

R - Y

G R G -

W R -

Y

G -

R

G -

W

2 1E

1G1

19 8

G R

6 1H

S p e e

d o m e

t e r

RL

4

2L

8

4

G R

16 IF1

LL

1

R -

B

R -

B

R -

B

R -

B

13 1G

V -

W

PL

5 7

R -

W 9 IF1

10AGAUGE


1E5

R -

W

IF1

G- O

V- W

G -

O

DLNL

3

2

1H

B- R

O D O F F

1H161H13

40 6 7 8 9 10 11 23

12 29

G- W

G- R

R- Y

R- W

IF1

B -

R

AE

BE

G - R

R

G - R

G - W

G - W

R - W

R

A 3

J 6 ( A ) J 7 ( B )

R- B

RB

C 6


Combination Meter

J u n c t i o n

C o n n e c

t o r

P R N D 2 L

B R

21

B R

IF

28

W -

R

IA113

W -

R

12

SP1


S 3

CPU




109


















System Outline




110











Parts Location


A3 28 E3 A 30 J6 A 31

A7 30 E4 B 30 J7 B 31

C6 30 E5 C 30 S3 29

D1 30 E6 D 30 S8 31

E1 28 F8 28 T1 29

E2 28 I10 30 T2 29

Relay Blocks





1A


1E

1F

1G


1O

1P





Service Hints




111

Ground Points



EC

ED34 Engine Block



Splice Points






108


7 IF1

R -

Y

R R -

W R -

Y

G -

R

R - Y

G -

W G R

IF16 IF15

1E9 1E4 1E3

1G16 1G17 1G18

R - Y

G R G -

W R -

Y

G -

R

G -

W

2 1E

1G1

19 8

G R

6 1H

S p e e

d o m e

t e r

RL

4

2L

8

4

G R

16 IF1

LL

1

R -

B

R -

B

R -

B

R -

B

13 1G

V -

W

PL

5 7

R -

W 9 IF1

10AGAUGE


1E5

R -

W

IF1

G- O

V- W

G -

O

DLNL

3

2

1H

B- R

O D O F F

1H161H13

40 6 7 8 9 10 11 23

12 29

G- W

G- R

R- Y

R- W

IF1

B -

R

AE

BE

G - R

R

G - R

G - W

G - W

R - W

R

A 3

J 6 ( A ) J 7 ( B )

R- B

RB

C 6


Combination Meter

J u n c t i o n

C o n n e c

t o r

P R N D 2 L

B R

21

B R

IF

28

W -

R

IA113

W -

R

12

SP1


S 3

CPU




109


















System Outline




110











Parts Location


A3 28 E3 A 30 J6 A 31

A7 30 E4 B 30 J7 B 31

C6 30 E5 C 30 S3 29

D1 30 E6 D 30 S8 31

E1 28 F8 28 T1 29

E2 28 I10 30 T2 29

Relay Blocks





1A


1E

1F

1G


1O

1P





Service Hints




111

Ground Points



EC

ED34 Engine Block



Splice Points






109


















System Outline




110











Parts Location


A3 28 E3 A 30 J6 A 31

A7 30 E4 B 30 J7 B 31

C6 30 E5 C 30 S3 29

D1 30 E6 D 30 S8 31

E1 28 F8 28 T1 29

E2 28 I10 30 T2 29

Relay Blocks





1A


1E

1F

1G


1O

1P





Service Hints




111

Ground Points



EC

ED34 Engine Block



Splice Points






110











Parts Location


A3 28 E3 A 30 J6 A 31

A7 30 E4 B 30 J7 B 31

C6 30 E5 C 30 S3 29

D1 30 E6 D 30 S8 31

E1 28 F8 28 T1 29

E2 28 I10 30 T2 29

Relay Blocks





1A


1E

1F

1G


1O

1P





Service Hints




111

Ground Points



EC

ED34 Engine Block



Splice Points






111

Ground Points



EC

ED34 Engine Block



Splice Points



Documents

106-111 Ect and a-t Indicator