Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTC
1. Turn the ignition on and test drive the vehicle with ESS enabled.
2. With the scan tool, view PCM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT DTC diagnostic procedure. Refer to STANDARD PROCEDURE .
CHECK FOR HIGH RESISTANCE IN THE (K806) ENGINE HOOD SWITCH 2 SIGNAL CIRCUIT
1. Turn the ignition off.
2. Disconnect the Engine Hood Switch 2 harness connector.
3. Disconnect the PCM C1 harness connector.
4. Measure the resistance of the (K806) Engine Hood Switch 2 Signal circuit between the Engine Hood Switch 2 harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair the (K806) Engine Hood Switch 2 Signal circuit for a short to ground.
  - Perform the PCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK FOR HIGH RESISTANCE IN THE (K915) SENSOR GROUND CIRCUIT
1. Measure the resistance of the (K915) Sensor Ground circuit between the Engine Hood Switch 2 harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K915) Sensor Ground circuit for a short to ground.
  - Perform the PCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE ENGINE HOOD SWITCH 2
1. Remove the Engine Hood Switch 2.
2. Depress and release the switch while measuring the resistance across the terminals of the Engine Hood Switch 2.
  NOTE:
  The switch should have continuity when not depressed and be open when it is depressed.
  
  Did the resistance read as described above?
  
  Yes
  - Go To 5
  No
  - Replace Engine Hood Switch 2.
  - Perform the PCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
POWERTRAIN CONTROL MODULE
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Engine Hood Switch 2 and the Powertrain Control Module.
2. Look for any chafed, pierced, pinched, or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals.
4. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Powertrain Control Module in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .