GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 DeVille 🢒 Body and Accessories 🢒 Doors 🢒 Power Mirrors Inoperative

Power Mirrors Inoperative With Memory

Step

Action

Value(s)

Yes

No

1

Did you perform the Outside Mirrors System Check?

--

Go to Step 2

Go to Outside Mirrors System Check

2

Use a J 39200 digital multimeter (DMM) in order to test for an open or a short to ground in CKT 1740 (ORN).

Is the circuit OK?

--

Go to Step 4

Go to Step 3

3

Repair the open or the short to ground in CKT 1740 (ORN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

4

Use a J 39200 DMM in order to test for an open in CKT 151 (BLK/WHT).

Is the circuit OK?

--

Go to Step 6

Go to Step 5

5

Repair the open in CKT 151 (BLK/WHT). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

6

Use a J 39200 DMM in order to test for an open in CKT 50 (BLK).

Is the circuit OK?

--

Go to Step 8

Go to Step 7

7

Repair the open in CKT 50 (BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

8

Test the power mirror switch.

Is the switch OK?

--

Go to Step 10

Go to Step 9

9

Replace the power mirror switch. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .

Is the repair complete?

--

Go to Outside Mirrors System Check

--

10

Replace the memory mirror module (MMM).

Is the repair complete?

--

Go to Outside Mirrors System Check

--

Power Mirrors Inoperative Without Memory

Step

Action

Value(s)

Yes

No

1

Did you perform the Outside Mirrors System Check?

--

Go to Step 2

Go to Outside Mirrors System Check

2

Use a J 39200 digital multimeter (DMM) in order to test for an open or a short to ground in CKT 1740 (ORN).

Is the circuit OK?

--

Go to Step 3

Go to Step 5

3

Use a J 39200 DMM in order to test for an open in CKT 50 (BLK).

Is the circuit OK?

--

Go to Step 4

Go to Step 6

4

Replace the power mirror switch. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .

Is the repair complete?

--

Go to Outside Mirrors System Check

--

5

Repair the open or the short to ground in CKT 1740 (ORN). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Outside Mirrors System Check

--

6

Repair the open in CKT 50 (BLK). Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Outside Mirrors System Check

--