Circuit Description
DTC C1282 allows the EBCM to inspect for a calibration malfunction by comparing the calibration value to a known value.
DTC C1282 also acts as a security measure to prevent improper use of calibrations or changes to these calibrations. Improper calibrations may alter the designed function of ABS.
Conditions for Setting the DTC
DTC C1282 can be set anytime. A malfunction exists if the EBCM internal memory calibration is incorrect.
Action Taken When the DTC Sets
| • | A malfunction DTC stores. |
| • | The ABS disables. |
| • | The ABS warning indicator turns ON. |
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
An intermittent DTC C1282 is most likely caused by a malfunctioning EBCM that is sensitive to temperature changes. If DTC C1282 occurred more than once, but is intermittent, replace the EBCM. Refer to Electronic Brake Control Module Replacement .
Use the enhanced diagnostic function of the Scan Tool in order to measure the frequency of the malfunction.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the ABS Diagnostic System Check performed? | -- | Go to Step 2 | |
2 |
Do not start the engine. Is DTC C1282 set as a current DTC? | -- | Go to Step 3 | Go to Step 4 |
3 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Is the repair complete? | -- | -- | |
4 | The malfunction is intermittent or is not present at this time. Refer to Diagnostic Aids for more information. Is the action complete? | -- | System OK | -- |
