Pinpoint Test C : The Speedometer Is Inoperative
- C1 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to DTC Chart: IPC . No GO to C2 - C2 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE BCM (BODY CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the BCM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to: Body Control Module (BCM) . No GO to C3 - C3 CARRY OUT THE SPEEDOMETER ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
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NOTE: Make sure to set the diagnostic scan tool to 0 or full cold before beginning this step.
Select the IPC speedometer (SPDOMETER) PID.
- Command the speedometer on and off while monitoring the speedometer.
Does the speed begin at 0 km/h (0 mph) move to 241 km/h (150 mph) and return to 0 km/h (0 mph)?
Yes DIAGNOSE any ABS module Diagnostic Trouble Codes (DTCs). Refer to: Anti-Lock Brake System (ABS) and Stability Control . No Refer to IPC Hardware Testing .