Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, erase DTCs in the PCM.
3. Monitor the scan tool for at least two minutes.
4. Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.
5. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
CHECK THE (K362) INTAKE AIR TEMPERATURE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the MAF/Intake Air Sensor harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (K362) Intake Air Temperature Signal circuit at the MAF/Intake Air Sensor harness connector.
  Does the voltage measure above 5.2 volts?
  
  Yes
  - Repair the (K362) Intake Air Temperature Signal circuit for a short to voltage.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (K362) INTAKE AIR TEMPERATURE SIGNAL FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the PCM C1 harness connector.
3. Measure the resistance of the (K362) Intake Air Temperature Signal circuit between the MAF/Intake Air Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (K362) Intake Air Temperature Signal circuit for an open or high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
CHECK THE (K757) SENSOR GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K757) Sensor Ground circuit between the MAF/Intake Air Sensor harness connector and the PCM C1 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (K757) Sensor Ground circuit for an open or high resistance.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
MAF/INTAKE AIR SENSOR
1. Turn the ignition off.
2. Reconnect the PCM C1 harness connector.
3. Connect a jumper wire between the (K757) MAF/Intake Air Sensor Ground circuit and the (K362) Intake Air Temperature Signal circuit at the MAF/Intake Air Sensor harness connector.
4. Turn the ignition on.
5. With the scan tool, select View DTCs.
  NOTE:
  The scan tool should display a P0112-Intake Air Temperature Sensor Low DTC as active or pending with the jumper wire in place.
  
  Does the scan tool display the DTC as described above?
  
  Yes
  - Replace the Mass Air Flow/Intake Air Sensor in accordance with the service information.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Go To 6
POWERTRAIN CONTROL MODULE
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Mass Air Flow/Intake Air Temperature Sensor 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. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.
5. Look for the data to change or for the DTC to reset during the wiggle test.
6. Perform any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  No
  - Replace the Powertrain Control Module in accordance with the service information. Refer to REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .