GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Park Avenue 🢒 Body and Accessories 🢒 Doors 🢒 Power Mirror Tilt Inoperative in Reverse

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. Determines if the mirror sensors are capable of sensing mirror position changes.

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check - Power Door Systems?

--

Go to Step 2

Go to Diagnostic System Check - Door Systems

2
  1. Check to see that the mirror Curb View personalization function has been enabled.
  2. If the Curb View personalization function is not already enabled, enable it.
  3. Turn ON the ignition, with the engine OFF.
  4. Shift the transmission into Reverse.

Does the mirror on the passenger front door tilt down?

--

Go to Step 11

Go to Step 3

3

  1. Install a scan tool
  2. Turn On the ignition, with the engine OFF.
  3. With the mirror select switch, select the R. mirror.
  4. With the mirror position adjustment switch, move the passenger front door mirror.
  5. With the scan tool observe the Sensor parameters in the Data list of the Passenger Front Door module.

Did the Sensor values change?

--

Go to Step 6

Go to Step 4

4
  1. Turn the ignition OFF.
  2. Disconnect the door module harness connector(s) for the mirror.
  3. Measure the voltage at the mirror sensor supply pin on the door module.
  4. Turn ON the ignition with the engine OFF.

Is the voltage indicated within the range given?

4.5-5.5 V

Go to Step 5

Go to Step 10

5
  1. Turn the ignition OFF.
  2. Disconnect the door module harness connector(s) for the mirror.
  3. Install a 3 Amp fused jumper between the mirror sensor supply pin and the sensor signal pins on the door module.
  4. Turn ON the ignition with the engine OFF.
  5. With the scan tool, observe the sensor parameters.

Is the voltage indicated within the range given?

4.5-5.5 V

Go to Step 6

Go to Step 10

6
  1. Turn the ignition OFF.
  2. Install a 3 Amp fused jumper between the mirror sensor return pin and the sensor signal pins on the door module.
  3. Turn ON the ignition with the engine OFF.
  4. With the scan tool, observe the sensor parameters.

Is the voltage indicated within the range given?

0-0.5 V

Go to Step 7

Go to Step 10

7

Inspect for poor connections at the harness connector of the outside 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?

--

Go to Step 11

Go to Step 10

8

Inspect for poor connections at the harness connector of the outside 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?

--

Go to Step 11

Go to Step 9

9

Replace the inoperative outside rear view mirror. Refer to Power Window Motor Replacement .

Did you complete the replacement?

--

Go to Step 11

--

10

Replace the door module of the inoperative mirror. Refer to Door Control Module Replacement - Front .

Did you complete the replacement?

--

Go to Step 11

--

11

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2