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For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1999 🢒 Isuzu MD Steel Tilt (F Model) 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Low Engine Coolant Indicator Inoperative

Low Engine Coolant Indicator Inoperative Cell 81

Step

Action

Value(s)

Yes

No

1
  1. Disconnect the instrument cluster connector.
  2. Connect a J 39200 (DMM) between the harness connector terminal B5 for CKT 15, CKT 483, or CKT 603 (YEL/RED) and ground.

Does the voltmeter indicate battery voltage?

--

Go to Step 2

Go to Step 4

2
  1. Disconnect the multifunction alarm module connector.
  2. Connect a J 39200 (DMM) across the multifunction alarm module harness terminal B2 and ground.

Does the voltmeter indicate battery voltage?

--

Go to Step 3

Go to Step 5

3

Repair the short to the battery in CKT 15, CKT 483 or  603 (YEL/RED) between the instrument cluster and the multifunction alarm module terminal B2.

Is the repair complete?

--

System OK

--

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

--

5

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

Is the repair complete?

--

System OK

--

Low Engine Coolant Indicator Inoperative Cell 41

Step

Action

Value(s)

Yes

No

1

Backprobe the low coolant probe connector with a J 39200 DMM from terminal B to B+.

Is the voltage less than the specified value?

10.0 V

Go to Step 2

Go to Step 3

2

Locate and repair the open in CKT 150 (BLK) between the low coolant probe and G 107.

Is the repair complete?

--

System OK

--

3
  1. Disconnect the low coolant probe.
  2. Connect a fused jumper from the low coolant probe connector terminal B to A.
  3. Place the ignition switch in the RUN position.

Does the lamp turn on?

--

Go to Step 4

Go to Step 5

4

Replace the low coolant probe. Refer to Coolant Level Sensor Replacement .

Is the repair complete?

--

System OK

--

5
  1. Leave the jumper connected.
  2. Backprobe the multifunction alarm module with a J 39200 from terminal B to B+.
  3. Measure the voltage.

Is the voltage less than the specified value?

10.0 V

Go to Step 6

Go to Step 7

6

Locate and repair the open in CKT 1478, CKT 481 or CKT 601 (LT GRN) between the low coolant probe and the multifunction alarm module.

Is the repair complete?

--

System OK

--

7
  1. Place the ignition switch in the LOCK position.
  2. Disconnect the multifunction alarm module.
  3. Disconnect the fused jumper.
  4. Connect a fused jumper from the multifunction alarm module connector terminal B2 to B+.

Does the test lamp light?

--

Go to Step 8

Go to Step 9

8

Locate and repair the open in CKT 15, CKT 603 or CKT 483 (YEL/RED) between the instrument cluster and the multifunction alarm module.

Is the repair complete?

--

System OK

--

9

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

Is the repair complete?

--

System OK

--