DEFINITION: The LH heated mirror does not turn ON or OFF.

Were you sent here from the Power Door Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Power Door Systems

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select LH DCM display DTC function on the scan tool.

Does the scan tool display DTC B2276 as history?

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Go to Diagnostic Trouble Code (DTC) List/Type

Go to Step 3

1. Turn ON the ignition, with the engine ON.
2. Activate the rear defogger.

Does the rear defogger operate?

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Go to Step 4

Go to Diagnostic System Check - Defogger

1. Turn ON the ignition, with the engine ON.
2. Activate the rear defogger.
3. Wait approximately 5 minutes for the mirrors to heat.

Does the LH mirror heat for approximately 10 minutes?

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System OK

Go to Step 5

1. Turn OFF the ignition.
2. Disconnect the LH mirror connector.
3. Turn ON the ignition, with the engine ON.
4. Connect a test lamp between the LH mirror heater control and ground circuit.
5. Activate the rear defogger.

Does the test lamp turn ON for approximately 10 minutes?

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Go to Step 7

Go to Step 6

Test the LH mirror heater control and ground circuits for an open or short. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 9

Go to Step 8

Replace the LH mirror. Refer to Outside Rearview Mirror Replacement .

Did you complete the replacement?

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Go to Step 9

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Replace the LH DCM. Refer to Door Control Module Replacement .

Did you complete the replacement?

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Go to Step 9

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2