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DTC P0600: Pcm Failure SPI Communications

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see CHEROKEE wiring diagram in WIRING DIAGRAMS article.
NOTE: DTC P0600: PCM FAILURE SPI COMMUNICATIONS is monitored with ignition on. DTC may be stored in Powertrain Control Module (PCM) if PCM senses bus communication failure between processors. Possible cause is: defective PCM.

Turn ignition on, with engine off. Using scan tool, read DTCs. If DTC P0600: PCM FAILURE SPI COMMUNICATIONS is present, replace PCM. Perform TEST VER-2A. If DTC P0600: PCM FAILURE SPI COMMUNICATIONS is not present, test is complete.

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