For 1990-2009 cars

## Power Mirrors Inoperative in Left/Right Direction - Left Side Without Memory

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Power Mirrors System Check? | -- | Go to Step 2 | Go to Outside Mirrors System Check
2 |

1. Set the mirror select switch to the left.
2. Use a J 39200 digital multimeter (DMM) in order to backprobe the power mirror switch terminal M and terminal B.
3. Place the power mirror switch in the left position and then in the right position.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 7

3 |

1. Disconnect the left outside power mirror connector.
2. Connect the DMM between terminal A and terminal B of the left outside power mirror connector.
3. Position the power mirror switch to the left and then to the right.

Is the voltage within the specified range?

10-15 V

Go to Step 8

Go to Step 4

4 |

1. Connect the DMM between the left outside power mirror connector terminal B and ground.
2. Position the power mirror switch to the right direction.

Is the voltage within the specified range?

10-15 V

Go to Step 6

Go to Step 5

5 | Repair the open or the short to ground in CKT 81 (WHT). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
6 | Repair the open or the short to ground in CKT 82 (LT BLU). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
7 | Replace the power mirror switch. Refer to Power Mirror Switch Replacement . Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
8 | Replace the left outside power mirror. Refer to Power Mirror Replacement . Did you complete the repair? | -- | Go to Outside Mirrors System Check | --

## Power Mirrors Inoperative in Left/Right Direction - Left Side With Memory

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Power Mirror System Check? | -- | Go to Step 2 | Go to Outside Mirrors System Check
2 |

1. Set the select switch to the left outside power mirror.
2. Use a J 39200 digital multimeter (DMM) in order to backprobe the following terminal:

• | The power mirror switch terminal 15 and terminal 11 (Oldsmobile)

• | The power mirror switch terminal M and terminal B (Buick)

3. Position the power mirror switch to the left and then to the right.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 14

3 |

1. Disconnect the left outside power mirror connector.
2. Connect the DMM between terminal A and terminal B of the left outside power mirror connector.
3. Position the power mirror switch to the left and then to the right.

Is the voltage within the specified range?

10-15 V

Go to Step 13

Go to Step 4

4 |

1. Disconnect the memory seat/mirror module connector C1.
2. Connect the DMM between the memory seat/mirror module connector terminal D6 and ground.
3. Position the power mirror switch to the left position.

Is the voltage within the specified range?

10-15 V

Go to Step 6

Go to Step 5

5 | Repair the open or the short to ground in CKT 1516 (LT BLU). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
6 |

1. Connect the DMM between the memory seat/mirror module connector terminal D11 and ground.
2. Position the power mirror switch to the right position.

Is the voltage within the specified range?

10-15 V

Go to Step 8

Go to Step 7

7 | Repair the open or short to ground in CKT 1512 (WHT). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
8 |

1. Connect the memory seat/mirror module connector C1.
2. Use DMM in order to backprobe the memory seat/mirror module connector C3, between terminal A and terminal B.
3. Position the power mirror switch to the left and then to the right.

Is the voltage within the specified range?

10-15 V

Go to Step 10

Go to Step 9

9 | Replace the memory seat/mirror module. Refer to Memory Seat Control Module Replacement in Seats. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
10 | Connect the DMM between the left outside power mirror connector terminal B and ground. Is the voltage within the specified range? | 10-15 V | Go to Step 12 | Go to Step 11
11 | Repair the open in CKT 81 (WHT). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
12 | Repair the open in CKT 82 (LT BLU). Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
13 | Replace the left outside power mirror. Refer to Power Mirror Replacement . Did you complete the repair? | -- | Go to Outside Mirrors System Check | --
14 | Replace the power mirror switch. Refer to Power Mirror Switch Replacement . Did you complete the repair? | -- | Go to Outside Mirrors System Check | --