Equus 3123 - GM Code Reader (1982 - 1995) - Manual (Page 30)

3
3-5 GM
• Count blinks to get the service codes.
• Codes may be one or two digits.
• Codes are displayed as a pattern of one long blink followed
by one or more short blinks. Count ALL blinks to get code.
• Code 3 looks like:
• The EBCM stores only one service code at a a time, even
though it may detect more than one fault condition. The
first fault detected results in a stored service code. The
detected fault must be corrected, and the service code
must be erased from the computer's memory before
additional codes can be stored.
• After the first fault is corrected and the service code is
erased, drive the vehicle at a speed greater than 35 mph
to set any additional service codes.
3.3.3 Retrieving Service Codes for Kelsey-Hayes 4WAL 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.
5. Read codes from the "Anti-Lock" 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.
• All codes are two digits.
• Count blinks to get the service codes:
• First and second digits of code are separated by a pause.
= Code 3
SHORT
BLINK
SHORT
BLINK
LONG
BLINK