chrysler Workshop Repair Guides

Chrysler Workshop Service and Repair Manuals

Internal Controller Failure|Page 3868 > < Internal Controller Failure|Page 3866
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Engine Control Module: Description and Operation
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 Powertrain Control Module (PCM) are needed to operate the total system. If failure occurs,
the solenoids and relays may not actuate properly.

POSSIBLE CAUSES:

-

PCM failure

Internal Controller Failure|Page 3868 > < Internal Controller Failure|Page 3866