Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Engine Cooling Schematics | |||
1 | Did you perform the Engine Cooling Diagnostic System Check? | Go to Step 2 | |
2 | Turn ON the ignition, with the engine OFF. Does the low coolant indicator illuminate? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Disconnect the coolant level switch. Does the low coolant indicator turn OFF? | Go to Step 7 | Go to Step 4 |
4 | With a scan tool, observe the BCM data parameter in the Body Control Module. Does the scan tool indicate that the Low Coolant Level parameter is Low? | Go to Step 9 | Go to Step 5 |
5 | With the scan tool, observe the SPI data parameter in the Body Control Module. Does the scan tool indicate that the low coolant lamp is On? | Go to Step 10 | Go to Step 6 |
6 | Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console. Did you complete the repair? | Go to Step 12 | -- |
7 | 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 12 | Go to Step 8 |
8 | Replace the coolant level switch. Refer to Radiator Surge Tank Replacement . Did you complete the repair? | Go to Step 12 | -- |
9 | Test the low coolant level indicator control circuit of the coolant level switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 12 | Go to Step 10 |
10 | 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 12 | Go to Step 11 |
11 |
Important: Perform the programming procedure for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System. Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the repair? | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
