Diagnostic Test

CHECK FOR CHARGING SYSTEM DTCS
1. With the scan tool, read Engine DTCs.
  NOTE:
  This includes any one trip faults.
  
  Are there any Engine Charging System DTCs present?
  
  Yes
  - Refer to DTC INDEX and repair any Charging System symptoms before proceeding. After repairing the Charging System, perform the Transmission Verification test to verify the transmission and or controller was not damaged. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK IF VOLTAGE IS GREATER THAN 16.9 VOLTS
1. Start the engine and raise the engine speed to 2000 rpm.
2. With the scan tool, monitor the Transmission system voltage for at least 60 seconds.
  Does the Transmission system voltage read above 16.9 volts for any period of time?
  
  Yes
  - Go To 4
  No
  - Go To 3
VERIFY IF VEHICLE WAS JUMP STARTED WITH 24-VOLT SYSTEM
1. Verify if the vehicle was jump started by another vehicle using a 24-volt charging system.
  Was the vehicle jump started by another vehicle using a 24-volt charging system?
  
  Yes
  - This is the cause of the DTC. Erase the DTC and return the vehicle to the customer.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Go To 5
CHECK BATTERY VOLTAGE

Courtesy of CHRYSLER GROUP, LLC
1. Start the engine and raise the engine speed to 2000 rpm.
2. With the scan tool, read the Transmission system voltage.
3. With a voltmeter, measure the battery voltage at the battery.
4. Compare the readings.
  Does the voltage readings match between the Transmission scan tool reading and the battery voltmeter reading?
  
  Yes
  - Repair the charging system for an over charging condition, and repair any Charging System symptoms before proceeding. Refer to DTC INDEX . After repairing the Charging System, perform the Transmission Verification test to verify the transmission and or controller was not damaged.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the TCM in accordance to the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL .
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
  No
  - Test Complete.