Diagnostic Test

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

ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool check for active DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L .
CHECK EACH FUEL INJECTOR CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance between the:
  - (K14) Fuel Injector 4 High Side Driver circuit and the (K611) Fuel Injector 4 Low Side Driver circuit at the PCM C1 harness connector.
  - (K38) Fuel Injector 5 High Side Driver circuit and the (K612) Fuel Injector 5 Low Side Driver circuit at the PCM C1 harness connector.
  - (K58) Fuel Injector 6 High Side Driver circuit and the (K613) Fuel Injector 6 Low Side Driver circuit at the PCM C1 harness connector.
  NOTE:
  Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit. Resistance reading should be between 0-1 Ohm.
  
  Is the resistance between 0-1 Ohm on all circuits?
  
  Yes
  - Go To 3.
  No
  - Go To 8.
CHECK EACH FUEL INJECTOR CIRCUIT FOR A SHORTED TO GROUND
1. Measure the resistance between ground and the:
  - (K14) Fuel Injector 4 High Side Driver circuit at the PCM C1 harness connector.
  - (K38) Fuel Injector 5 High Side Driver circuit at the PCM C1 harness connector.
  - (K58) Fuel Injector 6 High Side Driver circuit at the PCM C1 harness connector.
  NOTE:
  There should be no continuity between the circuit and ground.
  
  Is the resistance less than 10k Ohms on any circuit?
  
  Yes
  - Go To 12.
  No
  - Go To 4.
CHECK EACH FUEL INJECTOR CIRCUIT FOR A SHORTED TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage on the:
  - (K14) Fuel Injector 4 High Side Driver circuit at the PCM C1 harness connector.
  - (K38) Fuel Injector 5 High Side Driver circuit at the PCM C1 harness connector.
  - (K58) Fuel Injector 6 High Side Driver circuit at the PCM C1 harness connector.
  NOTE:
  There should be no voltage present.
  
  Is there voltage present on any circuit?
  
  Yes
  - Go To 6.
  No
  - Go To 5.
CHECK FOR THE DRIVER CIRCUITS SHORTED TOGETHER
1. Turn ignition off.
2. Disconnect all bank 2 Fuel Injector wires at the Fuel Injectors.
3. Measure the resistance between all bank 2 Driver circuits at the PCM C1 harness connector.
  Is the resistance below 10k Ohms between any Driver circuits?
  
  Yes
  - Repair the Driver circuits that are shorted together.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace and program the Powertrain Control Module in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE HIGH SIDE DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
NOTE:
Perform the following tests on the Fuel Injector circuit which was faulty.
1. Turn the ignition off.
2. Disconnect Fuel Injector wires at the Fuel Injector.
3. Turn the ignition on.
4. Measure the voltage of the High Side Driver circuit at the PCM C1 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the High Side Driver circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 7.
CHECK THE LOW SIDE DRIVER CIRCUIT FOR A SHORT TO VOLTAGE
1. Measure the voltage of the Low Side Driver circuit at the PCM C1 harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the Low Side Driver circuit for a short to voltage.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L . Test complete.
CHECK THE VALVE COVER PASS THROUGH HARNESS CIRCUIT

Fig 1: Valve Cover Pass Through Harness Connector (C117) Pin ID
Courtesy of CHRYSLER LLC

NOTE:
Perform the following tests on the Fuel Injector circuit which was faulty.
1. Disconnect the Valve Cover Pass Through harness connector.
2. Measure the resistance between Low Side Driver circuit and the High Side Driver circuit at the Valve Cover Pass Through connector terminals.
  NOTE:
  Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.
  
  Is the resistance between 0-1 Ohm?
  
  Yes
  - Go To 9.
  No
  - Go To 11.
CHECK THE HIGH SIDE CIRCUITS IN ENGINE HARNESS
1. Measure the resistance of the High Side Driver circuit between the Valve Cover Pass Through harness connector and the PCM C1 harness connector.
  NOTE:
  Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.
  
  Is the resistance between 0-1 Ohm?
  
  Yes
  - Go To 10.
  No
  - Repair the High Side Driver circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE LOW SIDE CIRCUITS IN ENGINE HARNESS
1. Measure the resistance of the Low Side Driver circuit between the Valve Cover Pass Through harness connector and the PCM C1 harness connector.
  NOTE:
  Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.
  
  Is the resistance between 0-1 Ohm?
  
  Yes
  - Perform the INTERMITTENT CONDITION - 6.7L diagnostic procedure. Refer to INTERMITTENT CONDITION - 6.7L . Test complete.
  No
  - Repair the Low Side Driver circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FUEL INJECTORS
1. Disconnect all bank 2 Fuel Injector wires at the Fuel Injectors.
2. Measure the resistance across the terminals at the Fuel Injector.
  NOTE:
  Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.
  
  Is the resistance between 0-1 Ohm?
  
  Yes
  - Replace the Valve Cover Pass Through harness in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace the Fuel Injector in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK FOR THE DRIVER CIRCUITS SHORTED TOGETHER
1. Disconnect all bank 2 Fuel Injector wires at the Fuel Injectors.
2. Measure the resistance between all bank 2 Driver circuits at the PCM C1 harness connector.
  Is the resistance below 10k Ohms between any circuits?
  
  Yes
  - Go To 13.
  No
  - Go To 14.
CHECK THE VALVE COVER PASS THROUGH HARNESS CIRCUITS

Fig 2: Valve Cover Pass Through Harness Connector (C117) Pin ID
Courtesy of CHRYSLER LLC
1. Disconnect the Valve Cover Pass Through harness connector.
2. Measure the resistance between all bank 2 Driver circuits of the Valve Cover Pass Through connector terminals.
  Is the resistance below 10k Ohms between any circuits?
  
  Yes
  - Replace the Valve Cover Pass Through harness in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Repair the short between the bank 2 Driver circuits in the engine harness.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
CHECK THE HIGH SIDE DRIVER CIRCUIT FOR A SHORT TO GROUND
NOTE:
Perform the following tests on the Fuel Injector circuit which was faulty.
1. Disconnect the Valve Cover Pass Through harness connector.
2. Measure the resistance between ground and the High Side Driver circuit at the PCM C1 connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the High Side Driver circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 15.
CHECK THE LOW SIDE DRIVER CIRCUIT FOR A SHORT TO GROUND
1. Measure the resistance between ground and the Low Side Driver circuit at the PCM C1 connector.
  Is the resistance below 10k Ohms?
  
  Yes
  - Repair the Low Side Driver circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Go To 16.
CHECK THE FUEL INJECTORS
1. Measure the resistance between ground and one of the Fuel Injector terminals.
  Is the resistance below 10k Ohms?
  
  Yes
  - Replace the Fuel Injector in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .
  No
  - Replace the Valve Cover Pass Through harness in accordance with the service information.
  - Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Refer to POWERTRAIN VERIFICATION TEST - 6.7L .