PCM Failure SPI Communications

NAME OF CODE
PCM Failure SPI Communications

WHEN MONITORED
With the ignition ON.

SET CONDITION
Serial communications inside the controller fail eight times during a run cycle.

THEORY OF OPERATION
Communications between microprocessors inside the PCM are needed to operate the total system. If failure occurs, the solenoids and relays may not actuate properly.

POSSIBLE CAUSES
- Powertrain Control Module (PCM) failure