GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2000 🢒 Intrigue 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Low Engine Coolant Indicator Inoperative

Step

Action

Value(s)

Yes

No

1

Is the low coolant warning indicator on with the coolant level OK?

--

Go to Step 3

Go to Step 2

2

Does the low coolant warning indicator remain off when the coolant level is low?

--

Go to Step 8

System OK

3
  1. Disconnect the low engine coolant level switch.
  2. Connect a 3A fused jumper between the low engine coolant level switch harness connector terminals A and B
  3. Turn the ignition switch to the on position.

Is the low engine coolant warning indicator on?

--

Go to Step 5

Go to Step 4

4

Replace the low engine coolant level indicator switch. Refer to Coolant Level Module Replacement in Engine Cooling.

Is the repair complete?

--

Go to Step 12

--

5
  1. Turn the ignition switch to the off position.
  2. Leave the low engine coolant level indicator switch disconnected.
  3. Disconnect the 3A fused jumper between the low engine coolant level switch harness connector terminals A and B.
  4. Disconnect the instrument cluster.
  5. Using a DMM, measure the resistance between the instrument cluster harness connector terminal B4 and ground.

Is the measured resistance same as the specified value?

∞

Go to Step 7

Go to Step 6

6

Repair the short to ground in circuit 68.

Is the repair complete?

--

Go to Step 12

--

7

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Step 12

--

8
  1. Disconnect the low engine coolant level indicator switch.
  2. Turn the ignition switch to the on position.

Is the low coolant warning indicator on?

--

Go to Step 9

Go to Step 10

9

Replace the low engine coolant level indicator switch. Refer to Coolant Level Module Replacement in Engine Cooling.

Is the repair complete?

--

Go to Step 12

--

10
  1. Turn the ignition switch to the off position.
  2. Remove the instrument cluster.
  3. Using a DMM, measure the resistance between the instrument cluster harness connector terminal B4 and ground.

Is the measured resistance same as specified value?

∞

Go to Step 7

Go to Step 11

11

Repair short to ground in circuit 68.

Is the repair complete?

--

Go to Step 12

--

12
  1. Turn the ignition switch off.
  2. Reconnect the connectors and reinstall the components that were removed.
  3. Clear instrument panel diagnostic trouble codes (DTCs). Refer to Clearing DTCs .
  4. Inspect for instrument cluster DTCs. Refer to Diagnostic Trouble Code (DTC) Displaying .

Are there any instrument cluster DTCs present?

--

Go to Diagnostic Trouble Code (DTC) List/Type

System OK