Test Description

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. 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.

2: This tests the mirror position sensor reference voltage using a scan tool. Normal reference voltage range is between 4.0-5.2 volts.
3: This test determines whether the mirror position sensor is shorted internally using a scan tool with the mirror disconnected. Reference voltage with the mirror disconnected is approximately 5.0 volts.
4: This tests for a short to ground in the mirror position sensor reference circuit.
5: This test determines whether the mirror position sensor reference circuit or the mirror position sensor signal circuit is short to voltage. Reference voltage with the mirror position sensor reference circuit short to voltage is B+.

DTC B2286-B2287

Step	Action	Value(s)	Yes	No
Schematic Reference: Door Control Module Schematics Connector End View Reference: Power Door Systems Connector End Views
1	Did you perform the Door Systems Diagnostic System Check?	-	Go to Step 2	Go to Diagnostic System Check - Door Systems
2	Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Position Sensor Ref parameter in the appropriate door control module Input data list. Does the scan tool indicate that the Position Sensor Ref parameter is within the specified range?	4.0-5.2 V	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Turn OFF the ignition. Disconnect the appropriate mirror. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Position Sensor Ref parameter in the appropriate door control module Input data list. Does the scan tool indicate that the Position Sensor Ref parameter is within the specified range?	4.0-5.2 V	Go to Step 9	Go to Step 4
4	Turn OFF the ignition. Connect the appropriate mirror. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Position Sensor Ref parameter in the appropriate door control module Input data list. Does the scan tool indicate that the Position Sensor Ref parameter is less than the specified value?	4.0-5.2 V	Go to Step 6	Go to Step 5
5	Does the scan tool indicate that the Position Sensor Ref parameter is equal to battery positive voltage?	-	Go to Step 7	Go to Step 8
6	Test the appropriate 5V reference circuit 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 13	Go to Step 10
7	Test the appropriate 5V reference circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 13	Go to Step 10
8	Test the appropriate signal circuit(s) for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 13	Go to Step 10
9	Inspect for poor connections at the harness connector of the appropriate mirror. 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 13	Go to Step 11
10	Inspect for poor connections at the harness connector of the appropriate door 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 13	Go to Step 12
11	Replace the appropriate mirror. Refer to Mirror Replacement . Did you complete the replacement?	-	Go to Step 13	-
12	Replace the appropriate door module. Refer to Door Control Module Replacement . Did you complete the replacement?	-	Go to Step 13	-
13	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