Low Traction Indicator Inoperative. Chevrolet Monte Carlo 1999

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 1999 🢒 Monte Carlo 🢒 Restraints 🢒 SIR 🢒 Low Traction Indicator Inoperative

ABS Components
Antilock Brake System Schematics

Circuit Description

The LOW TRAC Indicator is controlled by the EBCM. The LOW TRAC Indicator is activated during a traction control event only. When the EBCM detects a low traction condition it supplies a ground for CKT 1656 turning on the LOW TRAC Indicator.

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

-	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

-	Dirty or corroded terminals

-	A broken wire inside the insulation

•	If an intermittent malfunction exists refer to General Electrical Diagnosis in Wiring Systems for further diagnosis.

•	Zero the J 39200 test leads before making any resistance measurements.

Low Traction Indicator Inoperative

Step	Action	Value(s)	Yes	No
1	Was the Diagnostic System Check performed?	--	Go to Step 2	Go to Diagnostic System Check - ABS
2	Turn the ignition switch to the ON position, engine off. Amber Low Trac indicator will be turned on for approximate 3 seconds, then indicator should turn off. Did the amber ABS indicator LOW TRAC turn on?	--	Go to Diagnostic System Check - ABS	Go to Step 3
3	Turn the ignition switch to the OFF position. Disconnect the 24-way EBCM connector C1. Connect a fused jumper wire between EBCM connector C1 terminal A6 and a good known ground. Turn the ignition switch to the ON position, engine off. Does the Amber Low Trac indicator come on?	--	Go to Step 7	Go to Step 4
4	Turn the ignition switch to the OFF position. Disconnect the instrument panel connector. Using J 39200 DMM, measure the resistance between 24-way EBCM connector C1 terminal A6 and Instrument cluster connector terminal C8. Is the resistance within the range specified in the values column?	0.2-10 ohms	Go to Step 6	Go to Step 5
5	Repair a short to voltage in CKT 1656. Is the repair complete?	--	Go to Step 6	--
6	Replace all terminals that exhibit signs of poor terminal contact or corrosion. Refer to General Electrical Diagnosis in Wiring Systems. Reconnect EBCM connectors C1 and C2 and instrument panel connector. Turn the ingition switch to ON position. Did the LOW TRAC Indicator comes on for approximate 3 seconds then turn OFF?	--	SYSTEM OK	Go to Step 7
7	Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Is the repair complete?	--	Go to Diagnostic System Check - ABS	--