Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1239

•

When Monitored:
Ignition run time is greater than 1 second. Battery voltage between 9 and 16 volts. Engine run time greater
than 3 seconds.

•

Set Condition:
The PCM doesn’t receive an ABS message over the CAN C circuit for 7 consecutive seconds. The circuit is
continuously monitored.

Possible Causes

CAN C BUS FAILURE OPEN OR SHORTED CONDITION

ABS MODULE

PCM

Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic
procedures and for further possible causes.

Diagnostic Test

1.

ACTIVE DTC

Ignition on, engine not running.

With a scan tool, read PCM DTCs.

Is the DTC active at this time?

Yes

>> Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diag-

nostic procedures and for further possible causes.

No

>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

9 - 980

ENGINE ELECTRICAL DIAGNOSTICS

LX

U0141-LOST COMMUNICATION WITH FRONT CONTROL MODULE

For a complete wiring diagram Refer to Section 8W.

LX

ENGINE ELECTRICAL DIAGNOSTICS

9 - 981

•

When Monitored:
Ignition run time is greater than 1 second. Battery voltage between 9 and 16 volts.

•

Set Condition:
The PCM doesn’t receive a FCM message over the CAN C circuit for 7 consecutive seconds. The circuit is
continuously monitored.

Possible Causes

CAN C BUS FAILURE OPEN OR SHORTED CONDITION

FRONT CONTROL MODULE

PCM

Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic
procedures and for further possible causes.

Diagnostic Test

1.

ACTIVE DTC

Ignition on, engine not running.

With a scan tool, read PCM DTCs.

Is the DTC active at this time?

Yes

>> Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diag-

nostic procedures and for further possible causes.

No

>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

9 - 982

ENGINE ELECTRICAL DIAGNOSTICS

LX

U0155-LOST COMMUNICATION WITH CLUSTER/CCN

For a complete wiring diagramRefer to Section 8W.

LX

ENGINE ELECTRICAL DIAGNOSTICS

9 - 983