For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provide an overview of each diagnostic category. |
DTC Descriptor
DTC C0897 00: Device Voltage Range PerformanceDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Ignition | C0897 00 | C0897 00 | -- | -- |
Circuit/System Description
The power steering control module (PSCM) receives a power mode message from the body control module (BCM) via a serial data circuit. When a power mode ON message is received, the PSCM compares it to the state of its igniting voltage circuit.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
| • | The PSCM power mode message and the state of the ignition 1 circuit do not agree. |
| • | The PSCM ignition voltage circuit is shorted to ground, or open. |
| • | DTCs U2100, U2105, U2107, or U2109 are not set. |
Action Taken When the DTC Sets
| • | DTC C0897 00 is stored in memory. |
| • | The DIC displays the POWER STEERING warning message. |
| • | Steering assist is present for the remainder of the ignition cycle but will not be present on the following ignition ON cycle if the malfunction still exists. |
Conditions for Clearing the DTC
| • | A current DTC will clear when the malfunction is no longer present. |
| • | A history DTC will clear after 100 consecutive malfunction-free ignition cycles. |
Diagnostic Aids
| • | Inspect the 2-amp EPS fuse of the BCM for an open. |
| • | Inspect for a poor connection at the BCM. |
| • | Inspect for a poor connection at the PSCM. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Power Steering System Description and Operation
Electrical Information Reference
Scan Tool Reference
Diagnostic System Check - Vehicle for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the X2 harness connector at the PSCM.
- Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 8 and ground.
- If all circuits test normal, replace the PSCM.
| ⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Diagnostic System Check - Vehicle for PSCM replacement, setup, and programming |
