For 1990-2009 cars

### Circuit Description

This symptom table identifies undefined DTCs which result from an internal malfunction in the EBCM/EBTCM.

### Diagnostic Aids

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:

• | Rubbed-through wire insulation

• | A broken wire inside the insulation

• | Backed out terminals

• | Improper mating

• | Broken locks

• | Improperly formed or damaged terminals

• | Poor terminal-to-wiring connections

• | Physical damage to the wiring harness

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the Diagnostic System Check performed? | -- | Go to Step 2 | Go to Diagnostic System Check
2 |

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

Does the undefined DTCs reset?

--

Go to Step 3

Go to Step 4

3 | Replace the EBCM/EBTCM. Refer to Electronic Brake and Traction Control Module Replacement . Is the repair complete? | -- | Go to Diagnostic System Check | --
4 | Is the malfunction intermittent or not present at this time? | -- | Go to Diagnostic Aids | Go to Diagnostic System Check