For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit/System Description
The instrument panel cluster (IPC) displays the engine speed based on the information from the powertrain control module (PCM). The PCM converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. The IPC receives a class 2 serial data message from the PCM indicating the engine speed.
Reference Information
Schematic Reference
Connector End View Reference
Displays and Gages Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
Ignition ON, perform the tachometer gage sweep test with the scan tool.
| ⇒ | If the tachometer gage does not sweep from its low to high position, replace the instrument panel cluster (IPC). |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for the IPC replacement, setup, and programming
