GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Outside Rearview Mirror Schematics

Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the personalization system operates as described, Refer to Vehicle Personalization .

Does the personalization system operate as described ?

Go to Step 3

Go to Vehicle Personalization

3

Verify that the Power Mirrors - Folding Inoperative complaint is present.

Does the power folding mirrors system operate as described in the Description and Operation?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 4

4

  1. Turn OFF the ignition.
  2. Install a scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the Mirror Fold Switch parameter in the driver door switch assembly (DDSA) data list while momentarily pressing the power mirror fold switch.

Does the parameter display In or Out when momentarily pressing the fold switch, and Idle when it is not momentarily pressed?

Go to Step 5

Go to Step 10

5

  1. Turn OFF the ignition.
  2. Disconnect the door module harness connector from the door module associated with the inoperative mirror.
  3. Connect a test lamp between the extend and retract circuits at the door module pins.
  4. Turn ON the ignition, with the engine OFF.
  5. Observe the test lamp, while momentarily pressing the power mirror fold switch.

Does the test lamp illuminate each time the power mirror fold switch is momentarily pressed?

Go to Step 6

Go to Step 9

6

Test the folding mirror motor control circuits of the inoperative mirror for an open, or a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step  7

7

Test the folding mirror motor control circuits of the inoperative mirror for a short to battery voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 8

8

Inspect for poor connections at the harness connector of the inoperative power mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 11

9

Inspect for poor connections at the harness connector of the door control module associated with the inoperative mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 12

10

Inspect for poor connections at the harness connector of the DDSA. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 13

11

Replace the inoperative power mirror. Refer to Power Mirror Replacement .

Did you complete the repair?

Go to Step 14

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12

Replace the door control module associated with the inoperative mirror. Refer to Control Module References for replacement, setup and programming.

Did you complete the repair?

Go to Step 14

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13

Replace DDSA. Refer to Door Lock and Side Window Switch Replacement - Driver Side .

Did you complete the repair?

Go to Step 14

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14

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2