For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the instrument cluster diagnostic system check? | -- | Go to Step 2 | Go to Diagnostic System Check - Instrument Cluster
2 | Verify the fault is present. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 |

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the Vehicle Speed Sensor (VSS) signal parameter in the PCM data list.

Is there a VSS signal present?

--

Go to Step 4

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

4 | Important: Perform the set up procedure for the replacement IPC. Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement and the set up procedure? | -- | Go to Step 5 | --
5 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2