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
  - The no response 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.
  No
  - Go To 2.
CHECK THE (A209) FUSED B(+) CIRCUITS FOR AN OPEN OR SHORT

Fig 1: Checking Fused B(+) Circuits For An Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
  CAUTION:
  Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis.
3. Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuits.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 3.
  No
  - Repair the open or short in the (A209) Fused B(+) circuit.
  - Refer to 1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST.
CHECK THE (Z908) GROUND CIRCUITS FOR AN OPEN

Fig 2: Checking Ground Circuits For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the PCM C4 harness connector.
2. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits in PCM C1 harness connector.
3. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits in PCM C4 harness connector.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 4.
  No
  - Repair the open in the (Z908) Ground circuit.
  - Refer to 1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST.
CHECK THE (F202) IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 3: Checking Fused Ignition Switch 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 1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST.
CHECK THE (F1) FUSED IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 4: Checking Fused Ignition Switch (Off/Run/Start) Output Circuit For Open Or Short
Courtesy of CHRYSLER GROUP, LLC
1. Using a 12-volt test light connected to ground, check the (F1) Fused Ignition Off/Run/Start Control Output Circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 6.
  No
  - Repair the open or short in the (F1) Fused Ignition Off/Run/Start Control Output Circuit.
  - Refer to 1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST.
CHECK THE (F342) FUSED ASD RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 5: Checking Fused ASD Relay Output Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the PCM C3 harness connector.
2. Turn the ignition on.
3. Using a 12-volt test light connected to ground, check the (F342) Fused ASD Relay Output circuits.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 7.
  No
  - Repair the open or short in the (F342) Fused ASD Relay Output circuit.
  - Refer to 1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST.
CHECK THE (D65) CAN C BUS (+) CIRCUIT FOR AN OPEN

Fig 6: 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 C1 connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Go To 8.
  No
  - Repair the open in the (D65) CAN C Bus (+) circuit.
  - Refer to 1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST or 3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST or 2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L and perform the POWERTRAIN VERIFICATION TEST.
CHECK THE (D64) CAN C BUS (-) CIRCUIT FOR AN OPEN

Fig 7: Checking Can C Bus (-) Circuit For An Open
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 C1 connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Replace the Powertrain Control Module 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.
  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.