Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 335
U0103-LOST COMMUNICATION WITH ELECTRIC GEAR SHIFT MODULE
For a complete wiring diagram Refer to Section 8W.
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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•
When Monitored:
•
With the ignition on
•
Battery voltage between 10 and 16 volts
•
IOD fuse installed
•
FCM is configured correctly
•
Set Condition:
Bus messages not received from the Electric Gear Shift Module (shifter lever assembly) for approximately
500ms.
Possible Causes
CAN B OR CAN C BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
FCM NOT CONFIGURED CORRECTLY
SHIFTER LEVER ASSEMBLY (NAG1 ONLY)
SHIFTER LEVER ASSEMBLY (NAG1 ONLY) POWER AND GROUND
ELECTRONIC SHIFT MODULE (COLUMN NAG1)
ELECTRONIC SHIFT MODULE (COLUMN NAG1) POWER AND GROUND
MODULE THAT SET THIS DTC
Diagnostic Test
1.
VERIFY DTC IS ACTIVE
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
With the scan tool, read active DTCs.
Is this DTC active?
Yes
>> Go To 2
No
>> Refer to the Stored Lost Communication test procedure. Refer to the table of contents in this section.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
2.
CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
With the scan tool, read all active DTCs from all modules.
NOTE: Check for FCM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or igni-
tion related DTCs.
Does the scan tool display any active DTCs to the conditions listed above?
Yes
>> Diagnose and repair the DTC. Refer to the Table of Contents for a complete list of the symptoms.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
No
>> Go To 3
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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3.
VERIFY THAT THE SHIFTER LEVER ASSEMBLY (NAG 1 ONLY) OR IF APPLICABLE THE ELECTRONIC
SHIFT MODULE (COLUMN NAG 1) IS ACTIVE ON THE BUS
Turn the ignition on.
With the scan tool, select ECU View.
Verify that the Shifter Lever Assembly (NAG 1 Only) or if applicable the Electronic Shift Module (Column NAG 1) is
active on the bus.
Is the Shifter Lever Assembly (NAG 1 Only) or if applicable the Electronic Shift Module (Column NAG
1) active on the bus?
Yes
>> Go To 4
No
>> Refer to the Table of Contents located in this section for a no response test procedure.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
4.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
With the scan tool, select Network View and select Advanced.
Is there more than one module with active DTCs “Logged Against” the Shifter Lever Assembly (NAG 1
Only) or if applicable the Electronic Shift Module (Column NAG 1)?
Yes
>> Replace/update the Shifter Lever Assembly (NAG 1 Only) or if applicable the Electronic Shift Module
(Column NAG 1) in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
No
>> Replace/update the module that set this DTC in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to BODY VERIFICATION TEST – VER 1).
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE
For a complete wiring diagram Refer to Section 8W.
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ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS
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