Circuit Description
The isolation valve solenoid circuits are supplied with battery power when the ignition is in the run position. The EBTCM controls the valve functions by grounding the circuit when necessary.
Conditions for Setting the DTC
The EBTCM senses a discrepancy such as an open, short to ground, or short to voltage in the circuit.
Action Taken When the DTC Sets
| • | A malfunction DTC is stored. |
| • | ABS/TCS is disabled. |
| • | The ABS and ETS/TRAC OFF Indicators are 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 pass with no DTC(s) 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 numbers below refer to step numbers on the Diagnostic Table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Diagnostic System Check performed? | -- | Go to Diagnostic System Check | |
Does DTC C0156 reset as a current DTC? | -- | Go to Diagnostic System Check | ||
3 | Replace the EBTCM. Refer to Electronic Brake and Traction Control Module Replacement . Is the repair complete? | -- | Go to Diagnostic System Check | -- |
