Diagnostic Test

VERIFY DTC IS ACTIVE
NOTE:
Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
1. With the scan tool, read active DTCs.
  Is this DTC active?
  
  Yes
  - Go To 2
  No
  - Refer to STORED LOST COMMUNICATION DTCS and perform the STORED LOST COMMUNICATION DTCS diagnostic procedure.
CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
1. With the scan tool, read all active DTCs from all modules.
  NOTE:
  Check for TIPM configuration, CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
  
  Does the scan tool display any active DTCs to the conditions listed above?
  
  Yes
  - Perform the appropriate diagnostic procedure.
  No
  - Go To 3
VERIFY THE TPM IS ACTIVE ON THE BUS
1. Turn the ignition on.
2. With the scan tool, view all modules.
3. Verify the TPM is active on the bus.
  Is the TPM active on the bus?
  
  Yes
  - Go To 4
  No
  - Refer to DIAGNOSIS AND TESTING and perform the appropriate NO RESPONSE FROM TPM diagnostic procedure.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
1. With the scan tool, view all modules.
  Is there more than one module with active DTCs "Logged Against" the TPM?
  
  Yes
  - Replace/update the TPM module in accordance with the Service Information. Refer to MODULE, TIRE PRESSURE MONITORING (TPM), REMOVAL .
  - Perform the TPM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
CLEAR DTC IN MODULE SETTING FAULT
1. With the scan tool, select the module setting the DTC against the TPM.
2. Clear active DTCs.
  Is this DTC still active?
  
  Yes
  - Replace/update the module that set this DTC in accordance with the Service Information.
  - Perform the appropriate verification test for the module being replaced. If there is no verification test for the associated module perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
CYCLE IGNITION
1. Cycle the ignition from RUN to OFF three times ending with the key in the RUN position.
  Does this DTC become active?
  
  Yes
  - Go To 7
  No
  - The condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the appropriate VERIFICATION TEST.
CHECK FOR ADDITIONAL LOST COMMUNICATION FAULTS
1. With the scan tool, view all modules.
  Does the TIPM and other CAN C BUS modules show Lost Communication with the remaining CAN C BUS modules?
  
  Yes
  - Go To 8
  No
  - Replace/update the module that set this DTC in accordance with the Service Information.
  - Perform the appropriate verification test for the module being replaced. If there is no verification test for the associated module perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (D52) OR (D65) CAN C BUS (+) CIRCUIT FOR A SHORT TO VOLTAGE

Fig 1: Checking CAN C Bus (+) Circuit For Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Measure the voltage between the (D52) CAN C Bus (+) circuit and ground.
2. Measure the voltage between the (D65) CAN C Bus (+) circuit and ground.
  Is the voltage above 5.0 volts?
  
  Yes
  - Repair the short to voltage in the (D52) or (D65) CAN C Bus (+) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 9
CHECK THE (D51) OR (D64) CAN C BUS (-) CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking CAN C Bus (-) Circuit For Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance between ground and the (D51) CAN C Bus (-) circuit.
3. Measure the resistance between ground and the (D64) CAN C Bus (-) circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the short to ground in the (D51) or (D64) CAN C Bus (-) circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace/update the module that set this DTC in accordance with the Service Information.
  - Perform the appropriate verification test for the module being replaced. If there is no verification test for the associated module perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .