GM Service Manual Online
For 1990-2009 cars only

RH Power Mirror Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: The RH mirror does not operate UP, DOWN, LEFT or RIGHT.

1

Were you sent here from the Power Door Systems Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Power Door Systems

2

Select and operate the LH mirror UP, DOWN, LEFT and RIGHT.

Does the LH mirror operate in all directions?

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Go to Step 3

Go to Power Mirrors Inoperative - Left Side

3

  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Select RH DCM display DTC function on the scan tool.

Does the scan tool display B2273 as history?

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Go to Diagnostic Trouble Code (DTC) List/Type

Go to Step 4

4

With a scan tool, command the RH DCM to operate the RH mirror UP and DOWN.

Does the RH mirror operate UP and DOWN with each command?

--

Go to Step 5

Go to Step 6

5

With a scan tool, command the RH DCM to operate the RH mirror LEFT and RIGHT.

Does the RH mirror operate LEFT and RIGHT with each command?

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Go to Step 8

Go to Step 7

6

  1. Turn OFF the ignition.
  2. Disconnect the RH mirror motor connector.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between both RH vertical mirror motor control circuits
  5. With a scan tool, command the RH DCM to operate the RH mirror UP and DOWN.

Does the test lamp turn ON and OFF with each command?

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Go to Step 12

Go to Step 10

7

  1. Turn OFF the ignition.
  2. Turn ON the ignition, with the engine OFF.
  3. Connect a test lamp between both RH horizontal mirror motor control circuits
  4. With a scan tool, command the RH DCM to operate the RH mirror LEFT and RIGHT.

Does the test lamp turn ON and OFF with each command?

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Go to Step 12

Go to Step 11

8

  1. Activate the RH mirror select switch.
  2. With a scan tool, observe the Passenger Mirror Select Switch parameter in the LH DCM data list.

Does the Passenger Mirror Select Switch parameter change state?

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Go to Step 13

Go to Step 9

9

Test the RH mirror select switch signal and ground circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 14

10

Test the RH vertical mirror motor control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 13

11

Test the RH horizontal mirror motor control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 13

12

Replace the RH mirror. Refer to Outside Rearview Mirror Replacement .

Did you complete the replacement?

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Go to Step 15

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13

Replace the RH DCM. Refer to Door Control Module Replacement .

Did you complete the replacement?

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Go to Step 15

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14

Replace the LH door switch. Refer to Front Door Switch Replacement .

Did you complete the replacement?

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Go to Step 15

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15

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2