Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 2028

•

When Monitored:
Every 7 msec with:
1) Engine speed greater than 500 RPM.
2) Battery voltage between 10 and 16 volts.

•

Set Condition:
CAN C bus messages are not received for 10 seconds.

Theory of Operation

The NGC controller communicates over the CAN C bus. The transmission controller continuously monitors bus
activity. The CAN C bus is also used to communicate transmission MIL status to the Engine Controller. If the Engine
Controller is unable to communicate with the Transmission Controller, a DTC will set and the Engine Controller will
illuminate the MIL.

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

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AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

LX

U0121 LOST COMMUNICATION WITH ABS

For a complete wiring diagram Refer to Section 8W.

LX

AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

21 - 647

•

When Monitored:
Every 7 msec with:
1) Engine speed greater than 500 RPM.
2) Battery voltage between 10 and 16 volts.

•

Set Condition:
CAN C bus messages are not received for 10 seconds.

Theory of Operation

The NGC controller communicates over the CAN C bus. The transmission controller continuously monitors bus
activity. The CAN C bus is also used to communicate transmission MIL status to the Engine Controller. If the Engine
Controller is unable to communicate with the Transmission Controller, a DTC will set and the Engine Controller will
illuminate the MIL.

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

21 - 648

AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

LX

U0141 LOST COMMUNICATION WITH FCM

For a complete wiring diagram Refer to Section 8W.

LX

AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS

21 - 649