Test Description

The number below refers to the step number on the diagnostic table.

1. 2.  Lack of communication may be due to a partial malfunction of the serial peripheral interface (SPI) circuit or due to a total malfunction of the serial peripheral interface (SPI) circuit of the instrument panel cluster (IPC).
2. 4.  The presence of DTC s which begin with "U" indicate some other module is not communicating on the class 2 serial data circuit. The specified procedure will compile all the available information before tests are performed.
3. 5.  The presence of DTC s U2000-U2007 indicate a malfunction in the serial peripheral interface (SPI) between the IPC and the BCM.

Fig 1: Diagnostic System Check - Instrument Cluster

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