Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
NOTE:
When this DTC is Active the engine speed, torque and vehicle speed are limited to a Limp in mode.
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.
3. In the Freeze Frame data, look at the temperature at which the fault occurred. If it occurred in extreme cold temperatures, Icing of the throttle body may have caused this code to set.
  NOTE:
  Diagnose any TP Sensor faults, 5-Volt Supply faults and Battery voltage High or Low DTCs before continuing.
  
  NOTE:
  If P2072 is also set, this indicates that the cold weather ice blockage routine has run. No repair action is required.
  
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
THROTTLE PLATE STUCK
1. Turn the ignition off.
2. Remove the Air Cleaner Assembly from the Throttle Body. Refer to BODY, AIR CLEANER, REMOVAL, 5.7L .
3. Check for any signs of a foreign material (ice or dirt) causing the Throttle to stick.
  Were any problems found?
  
  Yes
  - Remove the debris if possible or replace the Throttle Body Assembly if signs of physical damage are present. Refer to THROTTLE BODY, REMOVAL . Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (K447) ETC MOTOR (+) CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the Throttle Body harness connector.
3. Disconnect the PCM C2 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 GPEC Diagnostic Adaptor to perform the diagnosis.
4. Connect the (special tool #10436, Adapter, GPEC Diagnostic).
5. Measure the resistance of the (K447) ETC Motor (+) circuit from the Throttle Body harness connector to the GPEC Adaptor.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K447) ETC Motor (+) circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (K448) ETC MOTOR (-) CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K126) ETC Motor (-) circuit from the Throttle Body harness connector to the GPEC Adaptor.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (K448) ETC Motor (-) circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
CHECK THE (K447) ETC MOTOR (+) CIRCUIT FOR A SHORT TO GROUND
1. Check for continuity between ground and the (K447) ETC Motor (+) circuit at the Throttle Body harness connector.
  Is there continuity between ground and the (K447) ETC Motor (+) circuit?
  
  Yes
  - Repair the (K447) ETC Motor (+) circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6
CHECK THE (K448) ETC MOTOR (-) CIRCUIT FOR A SHORT TO GROUND
1. Check for continuity between ground and the (K448) ETC Motor (-) circuit at the Throttle Body harness connector.
  Is there continuity between ground and the (K448) ETC Motor (-) circuit?
  
  Yes
  - Repair the (K448) ETC Motor (-) circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 7
ETC MOTOR
1. Connect the Throttle Body harness connector.
2. Measure the resistance of the ETC Motor between the (K447) ETC Motor (+) circuit and the (K448) ETC Motor (-) circuit at the PCM C2 harness connector.
  Is the resistance between 2.5 and 25 Ohms at closed throttle?
  
  Yes
  - Go To 8
  No
  - Replace the Throttle Body Assembly. Refer to THROTTLE BODY, REMOVAL . Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors.
4. Perform any Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL . Refer to PCM/ECM REPROGRAMMING - GAS .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .