Test F: The Speedometer/Odometer Is Inoperative

PINPOINT TEST F: 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) communication bus. The PCM receives the VSS signal from the output shaft speed (OSS) sensor. The PCM monitors the VSS input and sends it to the instrument cluster (IC) over the communication network. With the VSS input, the instrument cluster (IC) provides the speedometer with a corresponding pointer movement.

The odometer and trip odometer are viewed through the message center display on message center clusters or in the integrated circuit display on base clusters. The odometer is tamper-resistant and accumulates and registers up to 999,999 kilometers or miles, based upon rolling count data sent from the PCM over the communication network. The trip odometer accumulates and registers up to 999.9 kilometers or miles and can be reset.

DTC B2143 is a continuous and on-demand DTC that sets if the instrument cluster (IC) detects a failure in the non-volatile memory for the odometer. The odometer display in the instrument cluster (IC) integrated display or the message center displays dashes (-----).

This pinpoint test is intended to diagnose the following:
- PCM
- Instrument cluster (IC)

F1-F3:

F4-F5: