Test Description

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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

1: This step requires the technician to perform the diagnostic procedure for the control module.
2: The minimum high limit is the value of voltage above which the code will set. The maximum low limit is the value of voltage below which the code will set.
3: Test for the proper operation of the position 1 or position 2 circuit in the high voltage range. Use a connector test adaptor kit in order to jumper the connections between the rear position sensor and the harness connector.
4: Test for the proper operation of the position 1 or position 2 circuit in the high voltage range.
5: Test for short to ground in the 5 volt reference circuit.

DTC C0522

Step	Action	Values	Yes	No
Schematic Reference: Rear Wheel Steering Schematics Connector End View Reference: Rear Wheel Steering Connector End Views
1	Did you perform the Diagnostic System Check-Rear Wheel Steering?		Go to Step 2	Go to Diagnostic System Check - Rear Wheel Steering
2	Install a scan tool. Turn the ignition switch to the ON position, with the engine OFF. With a scan tool, observe the rear position sensor position 1 and the rear position sensor position 2 data parameters. Does the scan tool indicate that the position 1 and position 2 data parameter are within the specified range?	0.25-4.75 V	Go to Diagnostic Aids	Go to Step 3
3	Turn the ignition switch to the OFF position. Disconnect the rear position sensor. Jumper all of the circuits of the rear wheel position sensor to the harness connector of the rear position sensor using a connector test adaptor kit. Disconnect the position 1 and position 2 circuit. Turn the ignition switch to the ON position, with the engine OFF. With a scan tool, observe the position 1 and the position 2 data parameters. Does the scan tool indicate that the position 1 or position 2 data parameter is greater than the specified value?	4.75 V	Go to Step 4	Go to Step 8
4	Turn the ignition switch to the ON position. with the engine OFF. Connect the position 1 and the position 2 circuits. Connect a 3 amp fused jumper wire between the sensor ground circuit of the rear position sensor and position 1 and position 2 of the rear position sensor. Turn the ignition switch to the ON position. With a scan tool, observe the position 1 and the position 2 data parameter. Does the scan tool indicate that the position 1 and/or the position 2 data parameter is less than the specified value?	0.25 V	Go to Step 5	Go to Step 9
5	Turn the ignition switch to the OFF position. Disconnect the fused jumper wire. Connect a 3 amp fused jumper wire between the 5 volt reference circuit of the rear position sensor and position 1 and position 2 of the rear position sensor. Turn the ignition switch to the ON position. with the engine OFF. With a scan tool, observe the position 1 and the position 2 data parameter. Does the scan tool indicate that the position 1 and/or position 2 data parameter is greater than the specified value?	4.75 V	Go to Step 7	Go to Step 6
6	Test the 5 Volt reference circuit of the rear position 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 15	Go to Step 12
7	Test the 5 volt reference circuit of the rear wheel position 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 position 1 and position 2 signal circuit of the rear wheel position sensor for a short to ground. Refer to Circuit Testing , and to Wiring Repairs in Wiring Systems. Did you find and correct the condition?		Go to Step 15	Go to Step 12
9	Test the position 1 and position 2 signal circuit of the rear wheel position sensor for a short to voltage, a high resistance or a open. Refer to Circuit Testing , and to Wiring Repairs in Wiring Systems. Did you find and correct the condition?		Go to Step 15	Go to Step 10
10	Test the ground circuit of the rear wheel position sensor for a high resistance or an open. Refer to Circuit Testing , and toWiring 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 rear wheel position 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 rear wheel control module. Refer to Testing for Intermittent Conditions and Poor Connections , and to Connector Repairs in Wiring Systems. Did you find and correct the condition?		Go to Step 15	Go to Step 14
13	IMPORTANT: Perform the Learn Alignment procedure. Refer toMeasuring Wheel Alignment (w/Rear Wheel Steering)Measuring Wheel Alignment (w/o Rear Wheel Steering) in Wheel Alignment. Replace the rear wheel position sensor. Refer to Rear Position Sensor Replacement .Did you complete the replacement?		Go to Step 15
14	IMPORTANT: Perform the Learn Alignment procedure. Refer toMeasuring Wheel Alignment (w/Rear Wheel Steering)Measuring Wheel Alignment (w/o Rear Wheel Steering) in Wheel Alignment. Replace the rear wheel steering module. Refer to Rear Wheel Steering Control Module Replacement Did you complete the replacement?		Go to Step 15
15	Use the scan tool in order to clear the DTCs. 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