Circuit Description
The power steering control module outputs this DTC when it determines that the assist map is not written in the control module.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C1581 Assist Map Number Un-Writing
Conditions for Running the DTC
This DTC shall run when key is inserted into key cylinder.
Conditions for Setting the DTC
The assist map is not written in the power steering control module.
Action Taken When the DTC Sets
| • | Power assist stops. |
| • | The P/S warning indicator illuminates. |
Conditions for Clearing the DTC
The DTC will clear when conditions for setting the DTC have been repaired.
Diagnostic Aids
If the steering column or power steering control module has been replaced, the rotation angle sensor initialization and torque sensor zero point calibration, must be performed. Refer to Steering Angle Sensor Initialization and Steering Shaft Torque Sensor Zero Point Calibration .
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Power Steering Schematics Connector End View Reference: Component Connector End Views | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 | Replace the power steering control module. Refer to Control Module References for power steering control module replacement, setup and programming. Did you complete the replacement? | -- | Go to Step 3 | -- |
3 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
