Coolant Level Sensor/Washer Fluid Level Switch Circuit

Coolant Level Sensor/washer Fluid Level Switch Circuit:

WHEN MONITORED
With the ignition on.

SET CONDITION
Coolant Level Sensor/Washer Fluid Level Switch circuit failure.

POSSIBLE CAUSES
- Indicator circuit open
- Coolant level sensor malfunction
- Washer fluid level switch malfunction
- Indicator lamp
- Instrument cluster

Diagnostic Test

1. INSPECT THE LOW COOLANT INDICATOR LAMP

Turn the ignition off.
Remove the Low Coolant Indicator Lamp from the Instrument Cluster and inspect the lamp for an open filament.

Q: Is the lamp filament open?

YES: Replace the Low Coolant Indicator Lamp. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 2

2. INSPECT THE LOW WASHER FLUID INDICATOR LAMP

With the ignition off.
Remove the Low Washer Fluid Indicator Lamp from the Instrument Cluster and inspect the lamp for an open filament.

Q: Is the lamp filament open?

YES: Replace the Low Washer Fluid Indicator Lamp. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Go to 3




3. MEASURE COOLANT LEVEL SENSOR RESISTANCE

With the ignition off.
Disconnect the Coolant Level Sensor harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between cavity 1 and cavity 2 of the Coolant Level Sensor connector.

Q: Is the resistance between 102 and 120 ohms?

YES: Go to 4
NO: Replace the Coolant Level Sensor. Perform BODY VERIFICATION TEST. Body Verification Test




4. MEASURE WASHER FLUID LEVEL SWITCH RESISTANCE

With the ignition off.
Disconnect the Washer Fluid Level Switch harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Measure the resistance between cavity 1 and cavity 2 of the Washer Fluid Level Switch connector.

Q: Is the resistance between 145 and 185 ohms?

YES: Go to 5
NO: Replace the Washer Fluid Level Switch. Perform BODY VERIFICATION TEST. Body Verification Test




5. MEASURE COOLANT LEVEL SENSOR/WASHER FLUID LEVEL SWITCH CIRCUIT RESISTANCE

With the ignition off. Disconnect the Instrument Cluster C1 harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Connect a jumper wire between cavity 1 and cavity 2 of the Coolant Level Sensor harness connector.
Connect a jumper wire between cavity 1 and cavity 2 of the Washer Fluid Level Switch harness connector.
Measure the resistance between cavity 4B and 12B of the Instrument Cluster C1 harness connector.

Q: Is the resistance below 5.0 ohms?

YES: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST. Body Verification Test
NO: Repair the Coolant Level Sensor/Washer Fluid Level Switch circuit for an open. Perform BODY VERIFICATION TEST. Body Verification Test