Pinpoint Test F: The Speedometer Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Test F: The Speedometer Is Inoperative

Normal Operation

The Instrument Panel Cluster (IPC) receives the Vehicle Speed Sensor (VSS) signal from the PCM (non-hybrid) or from the Transmission Control Module (TCM) (hybrid) over the High Speed Controller Area Network (HS-CAN) communication bus. The PCM or TCM (Transmission Control Module) receives the VSS (Vehicle Speed Sensor) input from the Output Shaft Speed (OSS). The IPC (Instrument Panel Cluster) monitors the VSS (Vehicle Speed Sensor) input from the PCM or TCM (Transmission Control Module) and commands the speedometer with a corresponding movement of the pointer.

If the vehicle speed data is missing for 5 seconds or less or if the IPC (Instrument Panel Cluster) receives invalid vehicle speed data for 5 seconds or less, the IPC (Instrument Panel Cluster) defaults the speedometer to the last setting, based upon the last known good vehicle speed message. If the IPC (Instrument Panel Cluster) does not receive the vehicle speed data for more than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0100:00 (non-hybrid) or U0101:00 (hybrid) in continuous memory and defaults the speedometer to 0 km/h (0 mph). If the vehicle speed data received is deemed invalid by the IPC (Instrument Panel Cluster) for 5 seconds or more, the IPC (Instrument Panel Cluster) sets DTC U0401:68 (non-hybrid) or U0402:68 and defaults the speedometer to 0 km/h (0 mph).

NOTE: If DTC U0100:00 is set in the IPC (Instrument Panel Cluster) , other observable symptoms may be an inoperative tachometer, temperature gauge or odometer.

This pinpoint test is intended to diagnose the following:

- PCM (non-hybrid)

- TCM (Transmission Control Module) (hybrid)

- IPC (Instrument Panel Cluster)

PINPOINT TEST F : THE SPEEDOMETER IS INOPERATIVE

F1 RETRIEVE THE RECORDED DTCs FROM THE PCM AND TCM (Transmission Control Module) KOEO (Key ON Engine OFF) SELF-TEST

- Check for recorded PCM and TCM (Transmission Control Module) DTCs from the Key ON Engine OFF (KOEO) self-test.

Are any DTCs recorded?

Yes
DIAGNOSE all PCM and TCM (Transmission Control Module) DTCs first. REFER to Computers and Control Systems Information.

No
GO to F2.

F2 CARRY OUT THE SPEEDOMETER ACTIVE COMMAND USING THE SCAN TOOL

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: IPC (Instrument Panel Cluster) DataLogger.

- Select the IPC (Instrument Panel Cluster) speedometer (SPDOMETER) active command. Command the speedometer according to the following table while monitoring the speedometer.

Speedometer Command Gauge Position 0% 0 km/h (0 mph) 50% 97 km/h (60 mph) 100% 193 km/h (120 mph)

Does the speed begin at 0 km/h (0 mph) move to 97 km/h (60 mph) then 193 km/h (120 mph) and return to 0 km/h (0 mph)?

Yes
GO to F3.

No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.

F3 RETRIEVE THE RECORDED DTCs FROM THE IPC (Instrument Panel Cluster) SELF-TEST

- Check for recorded DTCs from the IPC (Instrument Panel Cluster) self-test.

Are any DTCs recorded?

Yes
For DTC U0100:00 (non-hybrid), GO to Pinpoint Test BF. Pinpoint Test BF: DTC U0100:00

For DTC U0101:00 (hybrid), GO to Pinpoint Test BG. Pinpoint Test BG: DTC U0101:00

For DTC U0401:68 (non-hybrid) or U0402:68 (hybrid), RETRIEVE and REPAIR all non-network DTCs in the PCM and other modules on the network. REFER to Computers and Control Systems Information and Body Control Systems for a list of all DTCs.

For all other DTCs, REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes

No
For non-hybrid vehicles, INSTALL a new PCM. TEST the system for normal operation.

For hybrid vehicles, INSTALL a new transaxle (TCM (Transmission Control Module)). TEST the system for normal operation.