Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Possible Causes
A-604 FUSED B(+) CIRCUITS OPEN OR SHORTED
(Z908) GROUND CIRCUITS OPEN
(F202) IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
(F1) FUSED IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED
(F342) FUSED ASD RELAY OUTPUT CIRCUIT OPEN OR SHORTED
(D65) CAN C BUS (+) CIRCUIT OPEN
(D64) CAN C BUS (-) CIRCUIT OPEN
POWERTRAIN CONTROL MODULE (PCM)

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 A-604 FUSED B(+) CIRCUITS FOR AN OPEN OR SHORT

Fig 1: Using 12-volt Test Light Connected To Ground To Check Fused B(+) Circuit
Courtesy of CHRYSLER 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 A-604 Fused B(+) circuits.
  Does the test light illuminate brightly for each circuit?
  
  Yes
  - Go To 3.
  No
  - Repair the open or short in the A-604 Fused B(+) circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
CHECK THE (Z908) GROUND CIRCUITS FOR AN OPEN

Fig 2: Using 12-volt Test Light Connected To 12-volts To Check Each Ground Circuits
Courtesy of CHRYSLER 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.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
CHECK THE (F202) IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 3: Using 12-volt Test Light Connected To Ground To Check Ignition Run/start Control Output Circuit
Courtesy of CHRYSLER 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.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
CHECK THE (F1) FUSED IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT

Fig 4: Using 12-volt Test Light Connected To Ground To Check Ignition Off/Run/Start Control Output Circuit
Courtesy of CHRYSLER 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.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
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 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.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
CHECK THE (D65) CAN C BUS (+) CIRCUIT FOR AN OPEN

Fig 6: Checking CAN C Bus (+) Circuit For Open
Courtesy of CHRYSLER 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.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
CHECK THE (D64) CAN C BUS (-) CIRCUIT FOR AN OPEN

Fig 7: Measuring Resistance Of CAN C Bus (-) Circuit Between TIPM Harness Connector And PCM Connector
Courtesy of CHRYSLER 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 .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.
  No
  - Repair the open in the (D64) CAN C Bus (-) circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST for 1500 and 2500, or POWERTRAIN VERIFICATION TEST for 3500.