Circuit Description
The TCS valve solenoid circuits are supplied with battery power when the ignition is in the ON position. The EBTCM controls the valve functions by grounding the circuit when necessary.
Conditions for Setting the DTC
The EBTCM senses a discrepancy in the circuit such as:
| • | An open. |
| • | A short to ground. |
| • | A short to voltage. |
Action Taken When the DTC Sets
| • | A malfunction DTC stores. |
| • | The ABS/TCS disables. |
| • | The ABS/TCS indicator(s) turn 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
The solenoid valve circuit and the solenoid coil are internal to the EBTCM. No part of the solenoid circuit is diagnosable external to the EBTCM. The DTC sets when there is a malfunction in the solenoid circuit internal to the EBTCM only.
Test Description
The number below refer to step number on the Diagnostic Table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Diagnostic System Check performed? | -- | ||
Does DTC C1272 reset as a current DTC? | -- | |||
3 | Replace the EBTCM. Refer to Electronic Brake Control Module/Electronic Brake and Track Control Module Replacement . Is the repair complete? | -- | -- |
