SCHEMATIC REFERENCE: Automatic Day-Night Mirrors Schematics

Did you perform A Diagnostic System Check- Automatic Day- Night Mirror?

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Go to Step 2

Go to Diagnostic System Check - Automatic Day-Night Mirror

1. Place the transmission in PARK.
2. Turn OFF the ignition.
3. Disconnect the inside rear view mirror harness connector.
4. Measure the resistance to ground of the inside rear view mirror ground circuit.

Is the resistance within the specified value ?

1-3 ohms

Go to Step 3

Go to Step 8

1. Turn ON the ignition, with the engine OFF.
2. Measure the voltage of the mirror harness connector between the inside mirror supply (B+) circuit and the ground circuit.

Is the voltage within the range specified?

9-16 V

Go to Step 4

Go to Step 9

Measure the voltage between the mirror reverse input circuit and the mirror ground circuit.

Is the voltage less than the value specified?

0.5 V

Go to Step 5

Go to Step 10

1. Place the transmission in reverse.
2. Measure the voltage of the mirror harness between the mirror reverse input circuit and the mirror ground circuit.

Is the voltage within the specified range?

9-16 V

Go to Step 6

Go to Step 11

1. Turn OFF the ignition.
2. Disconnect the driver door module harness connector.
3. Test the automatic day-night mirror input circuits for a short to ground or a short to voltage. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

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Go to Step 13

Go to Step 7

1. Reconnect the inside rear view mirror connector.
2. Turn ON the ignition , with the engine OFF.
3. Ensure that the transmission is in PARK.
4. Cover the sensor on the mirror back (facing the front window).
5. Shine a bright light into the sensor on the mirror face (facing the rear window).

Does the inside rear view mirror darken?

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Go to Step 13

Go to Step 12

Test the inside mirror ground circuit for a high resistance or an open. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 12

Test the inside mirror supply circuit for an open or a short to ground. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 12

Test the inside mirror reverse input for a short to voltage. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 12

Test the inside mirror reverse input for an open. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

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Go to Step 14

Go to Step 12

Inspect for poor connections at the harness connector of the inside rear view mirror. 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 14

Go to Step 13

Replace the inside rear view mirror. Refer to Inside Rearview Mirror Replacement .

Did you complete the replacement?

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Go to Step 14

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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