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Did you perform A Diagnostic System Check - Door Systems ?

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Go to Step 2

Go to Diagnostic System Check - Door Systems

1. Install a scan tool.
2. Turn ON the ignition leaving the engine OFF.
3. Move the mirror to the limits of travel using the mirror control switches.
4. Observe the Lt. Vertical Mirror Pos. parameter in the driver door module (DDM) data list using the scan tool.

Does the scan tool indicate the voltage varies and is within the specified range?

0.25-4.75 V

Go to Step 8

Go to Step 3

1. Turn OFF the ignition.
2. Disconnect the mirror harness connector from the door module.
3. Measure the position sensor 5 volt reference circuit.
4. Turn ON the ignition leaving the engine OFF.

Is the voltage near the specified value?

4.75-5.50 V

Go to Step 4

Go to Step 7

1. Turn OFF the ignition.
2. Probe the LH mirror vertical position sensor signal circuit with a fused jumper connected to the LH mirror vertical position sensor return circuit.
3. Turn ON the ignition leaving the engine OFF.
4. Observe the Lt. Mirror Vertical Pos. parameter in the DDM data list using the scan tool.

Does the scan tool indicate the voltage is near the specified value?

0-0.25 V

Go to Step 5

Go to Step 7

Inspect for poor connections/terminal tension at the DDM harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 6

Replace the LH mirror. Refer to Power Mirror Replacement

Did you complete the replacement?

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Go to Step 8

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Replace the DDM . Refer to Door Control Module Replacement .

Did you complete the replacement?

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Go to Step 8

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1. Clear the DTCs using the scan tool.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

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Go to Step 2

System OK