Low Engine Coolant Indicator Always On
Low Engine Coolant Indicator Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Engine Cooling Schematics (L61) or Engine Cooling Schematics (L66) Connector End View Reference: Cooling System Connector End Views DEFINITION: The low coolant indicator is always on when the key is in the ON position. |
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| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 |
|
Go to Step 3 | Go to Step 5 |
| 3 | Disconnect the coolant level switch connector. Does the low coolant indicator turn off? |
Go to Step 6 | Go to Step 4 |
| 4 | Test the signal circuit of the coolant level switch for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 7 |
| 5 | Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 8 |
| 6 | Inspect for poor connections at the harness connector of the coolant level switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 9 |
| 7 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 11 | Go to Step 10 |
| 8 | Replace the IPC. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the repair? |
Go to Step 11 | - |
| 9 | Replace the coolant level switch. Refer to Surge Tank Replacement . Did you complete the replacement? |
Go to Step 11 | - |
| 10 | Replace the BCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |