Equus 3123 - GM Code Reader (1982 - 1995) - Manual (Page 29)

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
1. 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