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.
(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: Measuring Resistance Of CAN C Bus (+) Circuit Between TIPM Harness Connector And PCM Harness Connector
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.