Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
  NOTE:
  Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, read the module status.
  NOTE:
  Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - Test complete, the condition or conditions that originally set this DTC are 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.
  No
  - Go To 2.
(A910/A118) FUSED B(+) CIRCUITS OPEN OR SHORTED

Fig 1: Checking Fused B(+) Circuits For Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Using a 12-volt test light connected to ground, check the (A910/A118) Fused B(+) circuits.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 3.
  No
  - Repair the open or short in the (A910/A118) Fused B(+) circuit.
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
(Z915) GROUND CIRCUITS OPEN

Fig 2: Checking Ground Circuits For Open
Courtesy of CHRYSLER GROUP, LLC
1. Using a 12-volt test light connected to 12-volts, check the (Z915) Ground circuits.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 4.
  No
  - Repair the open in the (Z915) Ground circuit.
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
(F202) IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED

Fig 3: Checking Ignition Run/Start Control Output Circuit For Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, check the (F202) Ignition Run/Start Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5.
  No
  - Repair the open or short in the (F202) Ignition Run/Start Control Output circuit.
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
(F1) IGNITION SWITCH OUTPUT (OFF-RUN-START) CIRCUIT OPEN OR SHORTED

Fig 4: Checking Ignition Switch Output (Off-Run-Start) Circuit For Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Using a 12-volt test light connected to ground, check the (F1) Ignition Switch Output (Off-Run-Start) circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 6.
  No
  - Repair the open or short in the (F1) Ignition Switch Output (Off-Run-Start) circuit.
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
(D65) CAN C BUS (+) CIRCUIT OPEN

Fig 5: Checking CAN C BUS (+) Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the TIPM C1 harness connector.
3. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the PCM C2 harness connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Go To 7.
  No
  - Repair the open in the (D65) CAN C Bus (+) circuit.
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
(D64) CAN C BUS (-) CIRCUIT OPEN

Fig 6: Measuring Resistance Of CAN C Bus (-) Circuit Between TIPM Harness Connector And PCM Harness Connector
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the PCM C2 harness connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Replace the PCM in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL or MODULE, POWERTRAIN CONTROL, 6.7L DIESEL [ETJ], REMOVAL .
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
  No
  - Repair the open in the (D64) CAN C Bus (-) circuit.
  - Refer to 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST - 6.7L.