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ManualsBrandsEquus ManualsMeasuring instruments3123 - GM Code Reader (1982 - 1995)

Retrieving ABS Codes

GM 3-4

•

All codes are two digits.

•

Count blinks to get the service codes:

•

First and second digits of code are separated by a 3 second

pause.

•

Second digit of service code is followed by a termination

code ("Anti-Lock" light remains steady on).

NOTE:

DO NOT count termination code as part of second

digit.

•

Code 13 looks like:

7. Up to seven codes can be stored by the EBCM. To check

for additional codes: with ignition still on, disconnect and

then reconnect Code Reader. Repeat this procedure until

all codes have been retrieved.

NOTE:

Service codes cannot be erased until all stored service

codes have been retrieved.

8. Turn off ignition and remove the Code Reader.

3.3.2 Retrieving Service Codes for Kelsey-Hayes RWAL Systems

Turn off ignition.

2. Connect the Code Reader to the vehicle test connector.

NOTE:

The Code Reader only fits into the connector one way.

3. Set Selector Switch to ABS A-H

position.

4. Turn on ignition. DO NOT

START THE ENGINE.

NOTE:

There is a 20 second pause before service codes begin

to display.

5. Read codes from the "Brake" light on your vehicle's

instrument panel. Be sure to write the codes down.

NOTE:

If the light does not blink, refer to your vehicle's

service manual for information on checking the

circuitry.

BLINK

PAUSE

BLINK BLINK

= Code 13

BLINK

STEADY ON

TERMINATION

CODE