For 1990-2009 cars

### Circuit Description

This DTC identifies a malfunction within the EBCM.

### Conditions for Running the DTC

The ABS conditions are normal.

### Conditions for Setting the DTC

An internal EBCM malfunction exists.

### Action Taken When the DTC Sets

#### C1255

• | The EBCM disables the ABS for the duration of the ignition cycle.

• | The ABS indicator turns ON.

#### C1256

• | The ABS remains functional.

• | The ABS indicator remains OFF.

### Conditions for Clearing the DTC

• | The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTCs function is used.

• | 100 drive cycles pass with no DTCs detected. A drive cycle consists of starting the vehicle, driving the vehicle over 16 km/h (10 mph), stopping and then turning the ignition OFF.

### Diagnostic Aids

Inspect that the EBCM to BPMV connection is secure, tight, and free from corrosion.

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Antilock Brake System Schematics
1 | Did you perform A Diagnostic System Check - ABS? | Go to Step 2 | Go to Diagnostic System Check - ABS
2 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Did you complete the replacement? | System OK | --