1. Disconnect the mirror connector.
2. Turn the ignition switch to the RUN position.
3. Set the gear selector lever to the reverse position.
4. Use a test light to probe between the inside rearview mirror connector terminal 3 and ground.

Does the test light illuminate?

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Go to Step 4

Go to Step 2

Do backup lamps operate?

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Go to Step 3

Go to Exterior Lights System Check or Backup Lamps Inoperative

Inspect circuit 24 and circuit 840.

Is there a poor connection or open in circuit 24 or circuit 840?

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Go to Step 5

Go to Step 6

Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement for service procedure.

Is the repair complete?

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Go to Automatic Day-Night Mirrors System Check

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Repair the poor connection or open in circuit 24 or circuit 840.

Is the repair complete?

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Go to Automatic Day-Night Mirrors System Check

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Replace or adjust the park neutral position (PNP) switch. Refer to Park/Neutral Position Switch Replacement and Park/Neutral Position Switch Adjustment in transmission/ transaxle for service procedure.

Is the repair complete?

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Go to Automatic Day-Night Mirrors System Check

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