Neon L4-2.0L SOHC (1995)
Information Bus: Description and Operation
No CCD Messages From TCM
NAME OF CODE:
No CCD Message From Transmission Control Module (TCM).
WHEN MONITORED:
Anytime the ignition is ON.
SET CONDITION:
No CCD messages are received from the TCM for 10 seconds.
THEORY OF OPERATION:
The PCM and TCM communicate across the CCD bus system. Information is needed from either module to operate their respective systems.
POSSIBLE CAUSES:
-
Open CCD Bus (+) or (-) circuit between the modules.
-
TCM not powered up
-
TCM failure
-
PCM failure