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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 491 (Body Diagnostic Procedures) >> Diagnostic Information And Procedures >> Instrument Cluster >> Symptom: *LOW COOLANT INDICATOR ALWAYS ON - DIESEL ONLY >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE - LOW COOLANT INDICATOR ALWAYS ON - DIESEL ONLY

TEST ACTION APPLICABILITY
1
NOTE: Ensure that the coolant is filled to the proper level before proceeding with this test.
Disconnect the Low Coolant Level Switch harness connector.With the DRBIII® in Inputs/Outputs, read the Low Coolant Switch state.Does the DRBIII® display "Closed"?Yes --> Go To 2No --> Replace the Low Coolant Switch in accordance with the Service Information.Perform BODY VERIFICATION TEST - VER 1  .		 All
2 Turn the ignition off.
Disconnect the Low Coolant Level Switch harness connector.
Disconnect the Instrument Cluster harness connector.
Measure the resistance between ground and the Low Coolant Fluid Level Sense circuit.
Is the resistance below 5.0 ohms?
Yes --> Repair the Low Coolant Fluid Level Sense circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1  .
No --> Replace and configure the Instrument Cluster in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1  .		 All
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