For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the engine cooling diagnostic system check? | -- | Go to Step 2 | Go to Diagnostic System Check
2 | Turn ON the ignition, with the engine OFF. During bulb check did the battery indicator turn on? | -- | Go to Step 3 | Go to Step 4
3 | Test the signal circuit of the low coolant level switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 5
4 | Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console. Important: Perform the set up procedure for the IP. Did you complete the replacement and the set up procedure? | -- | Go to Step 8 | --
5 | Test the ground circuit of the low coolant level switch for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 6
6 | Inspect for poor connections at the harness connector of the engine coolant level indicator module. 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 8 | Go to Step 7
7 | Replace the engine coolant level indicator module. Refer to Coolant Level Module Replacement . Did you complete the replacement? | -- | Go to Step 8 | --
8 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2