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For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1999 🢒 Isuzu MD Steel Tilt (F Model) 🢒 Body and Accessories 🢒 Doors 🢒 Heated Mirrors Inoperative

Heated Mirrors Inoperative Both Mirrors

Step

Action

Value(s)

Yes

No

1
  1. Turn the ignition switch to RUN position.
  2. Backprobe the heated mirror switch with a test lamp from terminal 1 to ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2

While pressing the heated mirror switch,backprobe the switch with a test lamp from terminal 2 to ground.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 141, CKT 341, or CKT  415 (PNK) between the IP fuse block and the heated mirror switch.

Do the mirrors operate?

--

System OK

--

4

Repair the open in CKT  142 (ORN) between the heated mirror switch and S342.

Do the mirrors operate?

--

System OK

--

5

Replace the heated mirror switch.

Do the mirrors operate?

--

System OK

--

Heated Mirrors Inoperative Switch Indicator Lamp

Step

Action

Value(s)

Yes

No

1
  1. Turn the ignition switch to the RUN position.
  2. Backprobe the heated mirror switch with a test lamp from terminal 1 to ground.

Did the test lamp light?

--

Go to Step 2

Go to Step 3

2
  1. Press the heated mirror switch to the ON position.
  2. Backprobe the heated mirror switch with a test lamp from terminal 2 to ground.

Did the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 141, CKT 341, or CKT 415 (PNK), between the IP fuse block and the heated mirror switch.

Does the heated mirror switch indicator operate?

--

System OK

--

4
  1. Locate the open in CKT 142 and CKT 342 (ORN) between the heated mirror switch and S342.
  2. Repair the open in CKT 142 and CKT 342 (ORN) between the heated mirror switch and S  342.

Do the heated mirrors operate?

--

System OK

--

5
  1. Repair the open in CKT 142 and CKT 143 (ORN) between the heated mirror switch terminal 2 to terminal 3.
  2. Replace the heated mirror switch.

Do the heated mirrors operate?

--

System OK

--

6

Replace the heated mirror switch.

Does the heated mirror switch indicator operate?

--

System OK

Go to Step 8

7

Repair the open in CKT 144 (BLK), between the heated mirror switch and splice pack No.1.

Do the heated mirrors operate?

--

System OK

--

8

Replace the heated mirror switch.

Does the heated mirror switch indicator operate?

--

System OK

--

Heated Mirrors Inoperative LH or RH Not Both

Step

Action

Value(s)

Yes

No

1
  1. Turn the ignition switch to the RUN position.
  2. Press the heated mirror switch to ON.
  3. Backprobe the inoperative heated mirror with a test lamp from terminal A to ground.

Did the test lamp light?

--

Go to Step 2

Go to Step 3

2

Backprobe the inoperative heated mirror with a test lamp from terminal B to B+.

Did the test lamp light?

--

Go to Step 4

Go to Step 5

3

Repair the open in CKT 342 or CKT 343 (ORN) between S342 and the inoperative heated mirror.

Does the heated mirror operate?

--

System OK

--

4

Replace the inoperative heated mirror.

Does the heated mirror operate?

--

System OK

--

5

Repair the open in CKT 33 (BLK) between the inoperative heated mirror and G105.

Does the heated mirror operate?

--

System OK

--