ABS Indicator Always On EBCM 310
Circuit Description
The Instrument Panel Cluster (IPC) commands the ABS Indicator on at bulb check until the IPC receives a class 2 serial data message from the EBCM commanding the ABS indicator off. If the EBCM sets a DTC(s), the EBCM may send a class 2 serial data message to the IPC commanding the ABS indicator on.
Diagnostic Aids
The malfunction must be present during diagnosis in order to prevent unnecessary parts replacement. Always begin diagnosis with a Diagnostic System Check.
Test Description
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the ABS Diagnostic System Check? | -- | Go to Diagnostic System Check | |
2 |
Does the ABS indicator illuminate for 2 seconds and then turn off? | -- | Go to Diagnostic Aids | |
Does the ABS indicator turn off when commanded Off? | -- | |||
4 | Replace the Instrument Panel Cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console. Did you complete the replacement? | -- | -- | |
5 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Important: Perform the Tire Size Calibration procedure Did you complete the replacement? | -- | -- | |
6 |
Does the ABS indicator illuminate for 2 seconds and then turn off? | -- | System OK |
ABS Indicator Always On EBCM 325
Circuit Description
The Instrument Panel Cluster (IPC) commands the ABS Indicator on at bulb check until the IPC receives a class 2 serial data message from the EBCM commanding the ABS indicator off. If the EBCM sets a DTC(s), the EBCM may send a class 2 serial data message to the IPC commanding the ABS indicator on.
Diagnostic Aids
The malfunction must be present during diagnosis in order to prevent unnecessary parts replacement. Always begin diagnosis with a Diagnostic System Check.
Test Description
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the ABS Diagnostic System Check? | -- | Go to Diagnostic System Check | |
2 |
Does the ABS indicator illuminate for 2 seconds and then turn off? | -- | Go to Diagnostic Aids | |
Does the ABS indicator turn off when commanded Off? | -- | |||
4 | Replace the Instrument Panel Cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console. Did you complete the replacement? | -- | -- | |
5 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Important: Perform the Tire Size Calibration procedure. Refer to Scan Tool Diagnostics Did you complete the replacement? | -- | -- | |
6 |
Does the ABS indicator illuminate for 2 seconds and then turn off? | -- | System OK | |
