For 1990-2009 cars only
Circuit Description
This DTC identifies a malfunction within the EBCM/EBTCM. When the EBCM/EBTCM relay is activated (turned on), voltage is supplied to the valve solenoids and pump motor.
Conditions for Setting the DTC
DTC C1256 is set when an internal EBCM/EBTCM malfunction exists.
Action Taken When the DTC Sets
| • | A malfunction DTC is stored. |
| • | ABS/TCS is not disabled. |
| • | ABS/TCS Indicators are not turned on. |
Conditions for Clearing the DTC
| • | Condition for DTC is no longer present and scan tool clear DTC function is used. |
| • | 100 ignition cycles have passed with no DTCs detected. |
Diagnostic Aids
Possible cause for DTC C1256 to set is an internal relay problem within the EBCM/EBTCM.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Diagnostic System Check performed? | -- | ||
2 |
Was any damage found? | -- | ||
3 | Repair as necessary. Is the repair complete? | -- | -- | |
4 |
Does DTC reset as a current DTC? | -- | -- | |
5 | Replace the EBCM/EBTCM. Refer to Electronic Brake Control Module/Electronic Brake and Track Control Module Replacement . Is the replacement complete? | -- | -- |
