ABS Indicator Always On. Chevrolet Camaro 1998

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 1998 🢒 Camaro 🢒 Brakes 🢒 Antilock Brake System 🢒 ABS Indicator Always On

ABS Components
ABS/TCS Schematics
Power Distribution Schematics
Power Distribution Schematics
Data Link Connector Schematics
Handling ESD Sensitive Parts Notice
Power Distribution Schematics

Circuit Description

The ABS indicator is controlled by the EBCM/EBTCM. The EBCM/EBTCM supplies the ground to CKT 867 in order to keep the indicator off. When CKT 867 looses ground at the EBCM/EBTCM, the ABS indicator turns on.

Diagnostic Aids

•	It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

•	Thoroughly inspect any circuitry that may be causing the complaint for the following conditions:

-	Backed out terminals

-	Improper mating

-	Broken locks

-	Improperly formed or damaged terminals

-	Poor terminal-to-wiring connections

-	Physical damage to the wiring harness

•	The following conditions may cause an intermittent malfunction:

-	A poor connection

-	Rubbed-through wire insulation

-	A broken wire inside the insulation

•	If an intermittent malfunction exists refer to Troubleshooting Procedures Cell 4 in Electrical Diagnosis for further diagnosis.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

This step checks for an internal EBCM/EBTCM malfunction.

This step checks for an open in CKT 867.

ABS Indicator On with No DTC Set

Step	Action	Value(s)	Yes	No
DEFINITION: ABS Indicator is on with no DTCs.
1	Was the Diagnostic System Check performed?	--	Go to Step 2	Go to Diagnostic System Check
2	Turn the ignition switch to the OFF position. Disconnect the EBCM/EBTCM connector C1. install the J 39700 Universal Pinout Box using the J 39700-530 cable adapter to connector C1 only. Connect a fused jumper wire between terminals 7 and 15 of J 39700 . Turn the ignition switch to the RUN position. Does the ABS Indicator turn off?	--	Go to Step 3	Go to Step 4
3	Replace the EBCM/EBTCM. Refer to Electronic Brake Control Module Replacement . Is the replacement complete?	--	Go to Diagnostic System Check	--
4	Turn the ignition switch to the OFF position. Disconnect the Instrument Cluster connector. Refer to Instrument Cluster Cell 81 in Electrical Diagnosis for connector pinout. Using J 39200 DMM, measure the resistance between terminals 7 of J 39700 and the Instrument Cluster harness connector terminal B17. Is the resistance within the range specified in the value(s) column?	0-5ohms	Go to Step 6	Go to Step 5
5	Repair CKT 867 for an open or high resistance. Refer to Repair Procedures Cell 5 in Electrical Diagnosis. Is the repair complete?	--	Go to Diagnostic System Check	--
6	Suspect the Instrument Panel. Refer to Instrument Panel in Instrument Panel, Gauges and Console. Is the repair complete?	--	Go to Diagnostic System Check	--