For 1990-2009 cars only
Circuit Description
The Master Cylinder Isolation valve solenoid circuits are supplied with battery power when the ignition is in the RUN position. The EBCM controls the valve functions by grounding the circuit when necessary.
Conditions for Setting the DTC
The EBCM 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 disabled |
| • | ABS/TCS Indicators are turned on. |
| • | The Red BRAKE Warning Indicator turns 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 detected. |
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? | -- | ||
Does DTC C0171 reset as a current DTC? | -- | |||
3 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement Is the repair complete? | -- | -- |
