DTC C0545 without LNF
Diagnostic Instructions
DTC Descriptor
DTC C0545 00: Steering Wheel Torque Input Sensor
Circuit/System Description
The power steering control module (PSCM) continuously monitors the torque sensor input and output shaft sine wave frequency signals. As the steering wheel is turned and torsional twist is applied to the steering column shaft, the torque sensors input and
output shaft sine wave frequency signals are processed by the PSCM to detect and calculate the steering torque.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
Internal failure of the torque sensor.
Action Taken When the DTC Sets
• | The driver information center (DIC) displays the POWER STEERING warning message. |
• | Slight steering effort imbalance |
Conditions for Clearing the DTC
• | When the condition is no longer present. |
• | A history DTC will clear after 100 consecutive malfunction-free ignition cycles. |
Diagnostic Aids
The torque sensor is serviced with the steering column assembly.
Reference Information
Schematic Reference
Power Steering Schematics
Connector End View Reference
Component Connector End Views
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 C0545 is not set.
⇒ | If the DTC is set, replace the steering column. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.
Steering Column Replacement
DTC C0545 with LNF
Diagnostic Instructions
DTC Descriptor
DTC C0545 00: Steering Wheel Torque Input Sensor
Circuit/System Description
The power steering control module (PSCM) continuously monitors the torque sensor input and output shaft sine wave frequency signals. As the steering wheel is turned and torsional twist is applied to the steering column shaft, the torque sensors input and
output shaft sine wave frequency signals are processed by the PSCM to detect and calculate the steering torque.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The PSCM detects open, short to ground or short between any of the torque sensor circuits.
Actions Taken When DTC Sets
• | DTC C0545 is stored in memory. |
• | The driver information center (DIC) displays the SERVICE POWER STEERING warning message. |
Conditions for Clearing the DTC
• | A current DTC will clear on the next malfunction-free ignition cycle. |
• | A history DTC will clear after 100 consecutive malfunction-free ignition cycles. |
Reference Information
Schematic Reference
Power Steering Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Power Steering System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector X3 at the PSCM.
- Ignition OFF, test for 2-20 Ω between the signal circuit terminal 4 and the signal circuit terminal 2.
⇒ | If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column. |
- Ignition OFF, test for 100-500 Ω between the signal circuit terminal 8 and the signal circuit terminal 1.
⇒ | If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column. |
- Ignition OFF, test for 300-1000 Ω between the signal circuit terminal 7 and the signal circuit terminal 1.
⇒ | If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column. |
- Ignition OFF, test for 50-200 Ω between the signal circuit terminal 6 and the signal circuit terminal 1.
⇒ | If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column. |
- Ignition OFF, test for 200-800 Ω between the signal circuit terminal 5 and the signal circuit terminal 1.
⇒ | If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column. |
- Ignition OFF, test for greater than 1.0 MΩ between the signal circuit terminal 2 and the signal circuit terminal 1.
⇒ | If less than the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column. |
- Ignition OFF, test for greater than 1.0 MΩ of resistance between the signal circuit terminal 1 and ground.
⇒ | If less than the specified range, test the signal circuit for a short to ground. If circuits test normal, replace the steering column. |
- Ignition OFF, test for greater than 1.0 MΩ between the signal circuit terminal 2 and ground.
⇒ | If less than the specified range, test the signal circuit for a short to ground. If circuits test normal, replace the steering column. |
- If all circuits test normal, replace the PSCM.
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic procedure.