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Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  Tests if the malfunction exists in the Steering Wheel Position Sensors centered position.
  2. 3:  Tests if the malfunction exist in the Steering Wheel Position Sensors left turn range.
  3. 4:  Tests if the malfunction exist in the Steering Wheel Position Sensors right turn range.
DTC C0521

Step Action Value(s) Yes No
Schematic Reference:  Steering Controls Schematics  
1 Did you perform the Variable Effort Steering Diagnostic System Check? - Go to Step 2  Go to Diagnostic System Check - Variable Effort Steering 
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine on.
  3. Center the steering wheel.
  4. With a scan tool, observe the Steering Wheel Position Sensor signal 1 and Steering Wheel Position Sensor signal 2 data parameters in the RTD/EVO data list.
Does the scan tool display the signal 1 and signal 2 data parameters at the specified value?		 signal 1: 4.0 V
signal 2: 2.0 V		 Go to Step 3  Go to Step 5 
3  Slowly turn the steering wheel to full left lock while observing the signal 1 and signal 2 data parameters.
Do the signal 1 and signal 2 data parameters change state in synchronization with each other and reach the specified value?		 signal 1: 2.5 V
signal 2: 4.5 V		 Go to Step 4  Go to Step 5 
4  Slowly turn the steering wheel to full right lock while observing the signal 1 and signal 2 data parameters.
Do the signal 1 and signal 2 data parameters change state in synchronization with each other and reach the specified value?		 signal 1: 1.6 V
signal 2: 1.6 V		 Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems Go to Step 5 
5 Inspect for poor connections at the harness connector of the Steering Wheel Position Sensor. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS in Wiring Systems.
Did you find and correct the condition?		 - Go to Step 7  Go to Step 6 
6 Replace the Steering Wheel Position Sensor. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement .
Did you complete the replacement?		 - Go to Step 7  -
7
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 - Go to Step 2  System OK
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