Pinpoint Test E: The Speedometer/Odometer Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test E: The Speedometer/Odometer Is Inoperative

Normal Operation

The Instrument Cluster (IC) receives the Vehicle Speed Sensor (VSS) signal from the PCM over the High Speed Controller Area Network (HS-CAN). The PCM receives the VSS data from the Output Shaft Speed (OSS) sensor. The IC monitors the VSS input from the PCM module and commands the speedometer with a corresponding movement of the pointer.

This pinpoint test is intended to diagnose the following:

- PCM
- IC



PINPOINT TEST E: THE SPEEDOMETER/ODOMETER IS INOPERATIVE

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E1 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO SELF-TEST


- Check for recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.
- Are any PCM DTCs recorded?

Yes
REFER to Computers and Control Systems Information.

No
If the speedometer is inoperative, GO to E2.

If the odometer is inoperative, GO to E3.

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E2 CARRY OUT THE IC SPEEDOMETER ACTIVE COMMAND USING THE SCAN TOOL


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger.
- Select the IC speedometer (SPDOMETER) active command and command the speedometer to 0, 193 km/h (120 mph), and back to 0.
- Does the speedometer reading start at 0 and move to 193 km/h (120 mph), and return to 0?

Yes
INSTALL a new PCM. TEST the system for normal operation.

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

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E3 CHECK THE MESSAGE CENTER DISPLAY


- Ignition ON.
- Operate the message center through all of the display functions.
- Do all of the message center displays illuminate correctly?

Yes
INSTALL a new PCM. TEST the system for normal operation.

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

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