For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Instrument Cluster Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Instrument Cluster
2 |

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, perform the Lamp Test in the IPC special functions.

Does the up shift indicator turn on and off with each command?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? | 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