GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Monte Carlo 🢒 Brakes 🢒 Antilock Brake System 🢒 Scan Tool Displays Undefined DTC

Object Number: 197850 Size: MF

Circuit Description

This symptom table identifies undefined DTCs which are caused by an internal malfunction in the EBCM.

Diagnostic Aids

The following conditions may cause an intermittent malfunction:

    • A poor connection
    • Rubbed-through wire insulation
    • A broken wire inside the insulation

Step

Action

Value(s)

Yes

No

1

Was the Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check - ABS

2
  1. Turn the ignition switch to the OFF position.
  2. Install a Scan Tool.
  3. Turn the ignition switch to the ON position, engine off.
  4. Use the Scan Tool in order to clear DTCs.
  5. Turn the ignition switch to the OFF position.
  6. Turn the ignition switch to the ON position, engine off.

Does the undefined DTC or DTCs reset?

--

Go to Step 3

Go to Step 4

3

Replace the EBCM. Refer to Electronic Brake Control Module Replacement .

Is the repair complete?

--

Go to Diagnostic System Check - ABS

--

4

Is the malfunction intermittent or not present at this time?

--

Refer to Diagnostic Aids

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