For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Inside Rearview Mirror Schematics
1 | Did you perform the Stationary Windows Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Stationary Windows
2 |

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Select the Inside Mirror Control from the Memory Seat Module (MSM) output controls.
4. With a scan tool, command the inside rearview mirror Up and Down.

Does the mirror move Up and Down?

Go to Step 3

Go to Step 4

3 | With a scan tool, command the mirror Left and Right. Does the mirror move Left and Right? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 5
4 |

1. Turn OFF the ignition.
2. Disconnect the harness connector of the inside rearview mirror.
3. Connect a test lamp between the mirror up circuit of the inside rearview mirror and a good ground.
4. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 7

Go to Step 6

5 |

1. Turn OFF the ignition.
2. Disconnect the harness connector of the inside rearview mirror.
3. Connect a test lamp between the mirror right circuit of the inside rearview mirror and a good ground.
4. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 8

Go to Step 6

6 | Connect a test lamp between the mirror motor control circuit of the inside rearview mirror and a good ground. Does the test lamp illuminate? | Go to Step 9 | Go to Step 10
7 | Test the mirror up circuit of the inside rearview mirror for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 11
8 | Test the mirror right circuit of the inside rearview mirror for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 11
9 | Test the mirror motor control circuit of the inside rearview mirror for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 11
10 | Inspect for poor connections at the harness connector of the inside rearview 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 14 | Go to Step 12
11 | Inspect for poor connections at the harness connector of the MSM. 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 14 | Go to Step 13
12 | Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement . Did you complete the replacement? | Go to Step 14 | --
13 | Important: Perform the set up procedure for the MSM. Replace the MSM. Refer to Memory Seat Control Module Replacement in Seats. Did you complete the replacement? | Go to Step 14 | --
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2