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 |

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the Engine Coolant Temperature parameter in the PCM data 1 list.

Does the scan tool indicate that the Coolant Temperature parameter is within the temperature range shown on the temperature gauge?

--

Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.4L

3 | 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 4 | --
4 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2