The steering wheel position/speed sensor is a 0 to 5 volt device which is used to measure steering wheel position. The valid output voltage range from the sensor is 0.35 to 4.75 volts. The output voltage will increase or decrease within the valid voltage range as the steering wheel is rotated. Vehicles that are not equipped with the Z55 option, Real Time Damping (RTD) have only 1 signal used by the body control module (BCM). The sensor is mounted at the base of the steering column.
Vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds.
The body control module detects a steering handwheel position/speed sensor out-of-range condition when the vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds.
The electronic variable orifice (EVO) outputs will be disabled for the remainder of the ignition cycle.
• | The body control module no longer detects a steering wheel speed/position sensor out-of-range condition. |
• | A history DTC will clear after 100 consecutive ignition cycles with no malfunction present. |
• | Using the scan tool |
The following conditions may cause the malfunction to occur:
• | There is a short to ground or voltage in the signal circuit. |
• | There is an open in the signal circuit. |
• | Perform a visual inspection for loose or poor connections at all related components. |
• | Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. |
The number(s) below refer to the step number(s) on the diagnostic table.
Verifies sensor voltage range.
Tests for the proper operation of the circuit in the high voltage range.
Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
Tests for a short to ground and an open in the 5 volt reference circuit.
Tests for a short to voltage, a high resistance, or an open circuit.
The control module must be recalibrated when replacement is necessary.
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
Schematic Reference: Steering Assist Schematics | ||||
1 | Did you perform the Variable Effort Steering Diagnostic System Check? | -- | Go to Step 2 | |
Does the scan tool indicate that the steering wheel position data parameter is within the specified range? | 0.35-4.7 V | Go to Diagnostic Aids | Go to Step 3 | |
Does the scan tool indicate that the steering wheel position data parameter is greater than the specified value? | 4.7 V | Go to Step 4 | Go to Step 8 | |
Does the scan tool indicate that the steering wheel position data parameter is less than the specified value? | 0.35 V | Go to Step 5 | Go to Step 9 | |
Test the 5 volt reference circuit of the steering handwheel position/speed sensor for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 7 | Go to Step 6 | |
6 |
Does the scan tool indicate that the steering wheel position data parameter is greater than the specified value? | 4.7 V | Go to Step 15 | Go to Step 12 |
Test the 5 volt reference circuit of the steering handwheel position/speed sensor for a short to voltage, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 11 | |
8 | Test the signal circuit of the steering handwheel position/speed sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 12 |
9 | Test the signal circuit of the steering handwheel position/speed sensor for a short to voltage, a high resistance, or an open circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 10 |
10 | Test the sensor low reference circuit of the steering handwheel position/speed sensor for a high resistance, a short to voltage or an open circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 12 |
11 | Inspect for poor connections at the harness connector of the steering handwheel position/speed sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 13 |
12 | Inspect for poor connections at the harness connector of the body control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 14 |
13 | Replace the steering handwheel position/speed sensor. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement Did you complete the replacement? | -- | Go to Step 15 | -- |
Did you complete the replacement? | -- | Go to Step 15 | -- | |
15 |
Does the DTC reset? | -- | Go to Step 2 | System OK |