GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1999 🢒 Isuzu MD Steel Tilt (F Model) 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 CHECK GAGES Indicator Inoperative

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the engine coolant temperature sensor.
  2. Connect a fused jumper from the engine coolant temperature sensor connector to chassis ground.
  3. Place the ignition switch in the RUN position.

Does the lamp light?

--

Go to Step 2

Go to Step 3

2

Replace the engine coolant temperature sensor. Refer to Engine Coolant Temperature Sensor Replacement .

Is the repair complete?

--

System OK

--

3
  1. Leave the jumper connected.
  2. Backprobe the multifunction alarm module with a J 39200 DMM from terminal B7 to B+.

Is the voltage less than the specified value?

10.0 V

Go to Step 4

Go to Step 5

4

Locate and repair the open in CKT 37, CKT 96, CKT 257, CKT 23 (GRN), or CKT 33, CKT 465 or CKT 609 (BRN) between the multifunction alarm module and the engine coolant temperature sensor.

Is the repair complete?

--

System OK

--

5
  1. Place the ignition switch in the LOCK position.
  2. Disconnect the fused jumper.
  3. Disconnect the oil pressure sensor.
  4. Connect a fused jumper from the oil pressure sensor connector to chassis ground.
  5. Place the ignition switch in the RUN position.

Does the lamp light?

--

Go to Step 6

Go to Step 7

6

Replace the oil pressure switch.

Is the repair complete?

--

System OK

--

7
  1. Leave the jumper connected.
  2. Backprobe the multifunction alarm module with a J 39200 DMM from terminal A7 to B+.

Is the voltage less than the specified range?

10.0 V

Go to Step 8

Go to Step 9

8

Locate and repair the open in CKT 7, CKT 331, CKT 383, CKT 211 (TAN/WHT), or CKT 34, CKT 466 or CKT 610 (BRN/BLK) between the multifunction alarm module and the oil pressure switch.

Is the repair complete?

--

System OK

--

9
  1. Place the ignition switch in the LOCK position.
  2. Disconnect the jumper.
  3. Disconnect the multifunction alarm module.
  4. Connect a fused jumper from the multifunction alarm module connector terminal B6 to chassis ground.
  5. Place the ignition switch in the RUN position.

Does the lamp light?

--

Go to Step 11

Go to Step 10

10

Locate and repair the open in CKT 19 or CKT 488 (BLU/YEL) between the instrument cluster and the multifunction alarm module connector terminal B6.

Is the repair complete?

--

System OK

--

11

Replace the multifunction alarm module. Refer to Multifunction Alarm Module Replacement .

Is the repair complete?

--

System OK

--