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Mazda EFI Diagnostic Trouble Code Retrieval

323/Astina/Allegro

The Data Link Connector is usually located at the firewall and has a cover with “Diagnosis”

The diagnostic trouble codes (DTC’s)

OR

The diagnostic trouble codes (DTC’s)

the Vehicle’s Data Link connector

Note: LED Testers are available from

Data Link Connector Diagram

1. Warm engine to operating temperature and turn ignition “OFF”

2. Install jumper wire bridge between TEN and GND terminals of data link connector

3. If reading codes from the vehicle

shown.

4. Turn the ignition switch to the “ON” position

5. If check engine light (MIL) illuminates for 3 seconds, goes off, and stays off, no codes are present

6. If engine light (MIL) illuminates, then starts flashing, record codes

7. Read codes as described in the Code Format Description below.

8. If you have multiple codes, they will be displayed on

flash, then it will repeat the codes.

9. When all codes have been recorded, remove jumper wire

TIP: If after you turn the ignition

vehicle has not been put into diagnostics mode correctly. To test the connection generate a fault

code by disconnecting the airflow meter or throttle positi

and re-run the Test.

Mazda EFI Diagnostic Trouble Code Retrieval

/Astina/Allegro Models with Check Engine Light (MIL)

1994 to 1998

Z5/KF/B6/BP Engine models

Connector is usually located at the firewall and has a cover with “Diagnosis”

(DTC’s) can be read from the dashboard check engine light

(DTC’s) can also be read using an LED Tester (See Note)

connector. Do Not use a test light as the load will damage the ECU.

LED Testers are available from us – go to the obd-obdii.com Products page

Data Link Connector

1. Warm engine to operating temperature and turn ignition “OFF”.

between TEN and GND terminals of data link connector

ehicle’s data link connector, connect an LED tester

. Turn the ignition switch to the “ON” position.

illuminates for 3 seconds, goes off, and stays off, no codes are present

illuminates, then starts flashing, record codes.

as described in the Code Format Description below.

If you have multiple codes, they will be displayed one after the other, then there will be a long

flash, then it will repeat the codes.

. When all codes have been recorded, remove jumper wire.

If after you turn the ignition on it is outputting any codes there are either no

vehicle has not been put into diagnostics mode correctly. To test the connection generate a fault

code by disconnecting the airflow meter or throttle position sensor, then crank or run the engine

Bridge Connector here

obd-obdii.com

Connector is usually located at the firewall and has a cover with “Diagnosis”

dashboard check engine light (MIL).

(See Note) connected to

damage the ECU.

obdii.com Products page

Connector Pin Layout

between TEN and GND terminals of data link connector.

LED tester to 'A' & 'B' as

illuminates for 3 seconds, goes off, and stays off, no codes are present

after the other, then there will be a long

no fault codes or the

vehicle has not been put into diagnostics mode correctly. To test the connection generate a fault

crank or run the engine

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Code Format Diagram

Code Format Description

Each code is made up of two series of flashes.

The long flashes indicate the 'tens' digits.

The short flashes indicate the 'ones' digits.

A long pause separates each code sequence.

The Code Format Diagram pictured here shows code 12.

To Erase Codes: To clear the memory, do this by removing the BTN fuse from the fuse box located

near the battery and press the brake pedal for 5 seconds. Alternatively you can remove the negative

battery terminal for 20 seconds.

Before removing the fuse, remember you may have to input your radio code again if you have one.

Mazda DTC lists (please note the different model engines)

Next page

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DTC List KF Engine:

Page 4 of 5 obd-obdii.com

DTC List BP/B6 Engine:

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DTC List Z5 Engine: