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For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1999 🢒 Catera 🢒 Body and Accessories 🢒 Wiring Systems 🢒 ABS Indicator Inoperative

Object Number: 416461 Size: MF
ABS Components
Cell 44 Electronic Traction Control Switch and Instrument Cluster

Circuit Description

The ABS indicator is controlled by the EBTCM. The EBTCM supplies the ground to the ABS indicator circuit to turn the indicator on. When the ABS indicator circuit is not grounded at the EBTCM, the ABS indicator remains off. The EBTCM harness connector contains a shorting bar for the ABS indicator circuit. When the EBTCM connector is disconnected from the EBTCM, the shorting bar shorts the ABS indicator terminal to ground turning on the 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
       - 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 Intermittents and Poor Connections Diagnosis in Wiring Systems for further diagnosis.

Test Description

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

  1. This step checks for an internal EBTCM malfunction.

    2.

  2. This step checks for an open in the ABS indicator circuit.

ABS Indicator Off No DTC Set

Step

Action

Value(s)

Yes

No

DEFINITION: ABS Indicator never comes on.

1

Was the Diagnostic System Check performed?

--

Go to Step 2

Go to A Diagnostic System Check - ABS

2

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the EBTCM connector C1.
  3. Install the J 39700 Universal Pinout Box using the J 39700-280 cable adapter to connector C1 only.
  4. Connect a fused jumper wire between terminals 21 and 19 of J 39700 .
  5. Turn the ignition switch to the ON position.

Does the ABS Indicator come on?

--

Go to Step 3

Go to Step 4

3

Replace the EBTCM. Refer to Electronic Brake and Traction Control Module Replacement .

Is the replacement complete?

--

Go to A Diagnostic System Check - ABS

--

4

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the Instrument Cluster connector.
  3. Using J 39200 DMM, measure the resistance between terminals 21 of J 39700 and the Instrument Cluster harness connector terminal 1.

Is the resistance within the range specified in the value(s) column?

0-5ohms

Go to Step 6

Go to Step 5

5

Repair the ABS Indicator circuit for an open or high resistance. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to A Diagnostic System Check - ABS

--

6

Suspect the Instrument Cluster. Refer to Diagnostic System Check - Instrument Cluster in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to A Diagnostic System Check - ABS

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