Diagnostic Instructions
Circuit/System Description
The instrument panel cluster (IPC) displays the engine speed based on the engine speed data from the body control module (BCM). The engine control module (ECM) sends the engine speed signal information via the serial data circuit to the BCM. The BCM sends
a message to the IPC indicating the engine speed. The IPC displays the engine speed based on the serial data message from the BCM.
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Scan Tool Data List
Circuit/System Testing
Ignition ON, with the scan tool, perform the IPC Gage Sweep Test in the IPC Output Controls. Verify that all gage dials move from minimum to the maximum value and back to the gage minimum value.
| ⇒ | If the tachometer does not perform the IPC Gage Sweep Test, replace the IPC. |
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for IPC replacement, setup, and programming
