Pinpoint Test E: The Speedometer Is Inoperative (Analog IPC (Instrument Panel Cluster))

Normal Operation and Fault Conditions
See Speedometer. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

If the vehicle speed message is missing or invalid for 5 seconds or longer, the IPC defaults the speedometer to 0 km/h (0 mph).

Possible Sources
- ABS concern
- PCM
- GWM concern
- IPC

E1 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPC self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to DTC Chart: Instrument Panel Cluster (IPC) .

No GO to E2

E2 PERFORM THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE SELF-TEST
- Using a diagnostic scan tool, perform the ABS module self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to: Anti-Lock Brake System (ABS) and Stability Control

No GO to E3

E3 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) KOEO (KEY ON, ENGINE OFF) SELF-TEST
- Using a diagnostic scan tool, perform the PCM KOEO self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to the appropriate Electronic Engine Controls article.

No GO to E4

E4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to: Communications Network

No GO to E5

E5 PERFORM THE SPEEDOMETER ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
- 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 257 km/h (160 mph) and return to 0 km/h (0 mph)?

Yes Refer to PCM Guided Routine .

No INSTALL a new IPC. Refer to Instrument Panel Cluster (IPC) .