Circuit Description
The power steering control module (PSCM) receives a power mode message from the body control module (BCM) via the serial data circuit. When a power mode ON message is received, the PSCM compares it to the state of its ignition 1 voltage circuit.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0897 Device Power Moding Error
This vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms, refer to DTC Symptom Description .
DTC Symptom | DTC Symptom Descriptor |
|---|---|
00 | No Additional DTC Information |
Conditions for Running the DTC
The ignition is 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 1 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 MIL/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. |
| • | Using a scan tool |
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Power Steering Schematics Connector End Views Reference: Power Steering Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Inspect the 2-amp EPS fuse for an open. Is the fuse open? | Go to Step 3 | Go to Step 4 |
3 |
Does the fuse open? | Go to Step 7 | Go to Testing for Intermittent Conditions and Poor Connections |
4 | Inspect for poor connections at the power steering control module (PSCM) harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 5 |
5 | Inspect for poor connections at the body control module (BCM) harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 6 |
6 | Test the ignition 1 circuit of the PSCM for an open. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
7 | Test the ignition 1 circuit of the PSCM for a short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 9 | Go to Step 8 |
8 | Replace the power steering motor and module assembly. Refer to Power Steering Assist Motor Replacement . Did you complete the replacement? | Go to Step 9 | Go to Step 3 |
9 |
Does the DTC reset? | Go to Step 2 | System OK |
