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 provides an overview of each diagnostic category. |
DTC Descriptor
DTC C1512 00: Temperature Sensor Circuit MalfunctionDTC C1512 01: Temperature Sensor Circuit Short to Battery
DTC C1512 02: Temperature Sensor Circuit Short to Ground
DTC C1512 54: Temperature Sensor Circuit Temperature High
Circuit/System Description
The power steering control module (PSCM) monitors the temperature of the power steering system. The PSCM uses voltage, current levels and input from an internal temperature sensor to calculate an estimated system temperature. If the PSCM detects a high system temperature event is occurring, the amount of assist is reduced to lower system temperature to prevent thermal damage to the power steering components.
Conditions for Running the DTC
| • | Engine Running. |
| • | Power steering system voltage is 9-16 volts. |
| • | Repetitive steering input is present. |
Conditions for Setting the DTC
The PSCM detects a high system temperature.
Action Taken When the DTC Sets
Steering assist is reduced.
Conditions for Clearing the DTC
| • | A current DTC will clear when the Power Steering System temperature returns to normal. |
| • | A history DTC will clear after 60 consecutive malfunction-free ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Power Steering System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Verify that DTC C1512 is not set.
| ⇒ | If the DTC is set, reprogram the PSCM. If the DTC resets, replace the PSCM. |
Repair Instructions
Important: For any module replacement a set procedure needs to be followed. A "Reset" may need to be performed from the PROGRAMMING menu of the current system with the Tech 2 BEFORE replacing the module.
| • | Perform the Diagnostic Repair Verification after completing the repair. |
