Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1238

U0101-LOST COMMUNICATION WITH TCM

For a complete wiring diagram Refer to Section 8W.

•

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 a Bus Message from the Transmission Control Module for 7 consecutive seconds.
The circuit is continuously monitored.

Possible Causes

CAN C BUS FAILURE OPEN OR SHORTED CONDITION

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 - 976

ENGINE ELECTRICAL DIAGNOSTICS

LX

U0103-LOST COMMUNICATION WITH ELECTRIC GEAR SHIFT MODULE

For a complete wiring diagramRefer to Section 8W.

LX

ENGINE ELECTRICAL DIAGNOSTICS

9 - 977

•

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 a Electric Gear Shift Module message over the CAN C circuit. The circuit is contin-
uously monitored.

Possible Causes

CAN C BUS FAILURE OPEN OR SHORTED CONDITION

ELECTRIC GEAR SHIFT 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 - 978

ENGINE ELECTRICAL DIAGNOSTICS

LX

U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE

For a complete wiring diagramRefer to Section 8W.

LX

ENGINE ELECTRICAL DIAGNOSTICS

9 - 979