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Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    WARNING:

    The normal operating temperature of the exhaust system is very high. Never work around or attempt to service any part of the exhaust system until it has cooled. Special care should be taken when working near any part of the exhaust system. The temperature rises to a high level after a short period of engine operating time.

    NOTE:

    Diagnose and repair any Secondary Air system sensor signal or relay control circuit DTCs before proceeding with this procedure.

    1. Turn the ignition on.
    2. With the scan tool, select View DTCs and review the DTC environmental data for this DTC.

      Is the good trip counter greater than 0?

      Yes 

      • Perform the CHECKING FOR AN INTERMITTENT DTC diagnostic procedure. Refer to STANDARD PROCEDURE .

      No 

      • Go To  2
  2. AIR INJECTION SYSTEM COMPONENT INSPECTION 
    WARNING:

    The normal operating temperature of the exhaust system is very high. Never work around or attempt to service any part of the exhaust system until it has cooled. Special care should be taken when working near any part of the exhaust system. The temperature rises to a high level after a short period of engine operating time.

    1. Turn the ignition off.
    2. Inspect the Secondary Air Pump Airflow Sensor, the Secondary Air Pump Assembly, the Secondary Air Pump Valve and the connection tubes between them.
    3. Look for damage, leaks or any condition that would limit or interfere with airflow between the components.
    4. Using the wiring diagram/schematic as a guide, inspect the wiring and electrical connectors at the Secondary Air Pump Airflow Sensor, Secondary Air Pump Relay and the Secondary Air Pump Assembly.
    5. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors.

      Were any problems found?

      Yes 

      • Repair as necessary.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. (F202) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the Airflow Sensor connector.
    3. Turn the ignition on.
    4. Using a 12-volt test light connected to ground, check the (F202) Fused Main Relay Output circuit in the Airflow Sensor harness connector.
      NOTE:

      The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Is the test light illuminated and bright?

      Yes 

      • Go To  4

      No 

      • Repair the (F202) Fused Main Relay Output circuit for an open circuit or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. (K157) MAF SIGNAL CIRCUIT VOLTAGE 
    1. Turn the ignition on.
    2. Measure the voltage of the (K157) MAF Signal circuit in the Airflow Sensor harness connector.

      Is the voltage between 4.8 and 5.1 volts?

      Yes 

      • Go To  5

      No 

      • Go To  7
  5. (K957) SENSOR GROUND CIRCUIT TEST 
    1. Turn the ignition off.
    2. Using a 12-volt test light connected to 12 Volts, check the (K957) Sensor Ground circuit in the Airflow Sensor harness connector.
      NOTE:

      The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

      Is the test light illuminated and bright?

      Yes 

      • Go To  6

      No 

      • Go To  10
  6. AIRFLOW SENSOR 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Airflow Sensor 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 related connectors.
    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 POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Airflow Sensor.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. (K157) MAF SIGNAL CIRCUIT SHORTED TO VOLTAGE 
    1. Turn the ignition off.
    2. Disconnect the Powertrain Control Module (PCM) connector.
    3. Turn the ignition on.
    4. Measure the voltage of the (K157) MAF Signal circuit in the Airflow Sensor harness connector.

      Is there any voltage present?

      Yes 

      • Repair the (K157) MAF Signal circuit for a short to voltage.
      • Perform the PCM VERIFICATION Test. Refer to STANDARD PROCEDURE .

      No 

      • Go To  8
  8. (K157) MAF SIGNAL CIRCUIT SHORTED TO GROUND 
    1. Turn the ignition off.
    2. Measure the resistance between ground and the (K157) MAF Signal circuit in the Airflow Sensor harness connector.

      Is the resistance above 100 Ohms?

      Yes 

      • Go To  9

      No 

      • Repair the (K157) MAF Signal circuit for a short to ground.
      • Perform the PCM VERIFICATION Test. Refer to STANDARD PROCEDURE .
  9. (K157) MAF SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE 
    NOTE:

    When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact.

    1. Measure the resistance of the (K157) MAF Signal circuit between the Airflow Sensor harness connector and the PCM.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  11

      No 

      • Repair the (K157) MAF Signal circuit for an open circuit or high resistance.
      • Perform the PCM VERIFICATION Test. Refer to STANDARD PROCEDURE .
  10. (K957) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE 
    NOTE:

    When checking circuits at the Powertrain Control Module (PCM), be careful not to damage or distort the connector terminals. Improper measurement technique could result in poor pin to terminal contact.

    1. Measure the resistance of the (K957) Sensor Ground circuit between the Airflow Sensor harness connector and the PCM.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  11

      No 

      • Repair the (K957) Sensor Ground for an open circuit or high resistance.
      • Perform the PCM VERIFICATION Test. Refer to STANDARD PROCEDURE .
  11. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Secondary Air Pump Assembly 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 related connectors.
    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 

      No 

      • Replace the Powertrain Control Module (PCM) in accordance with the Service Information.
      • Perform the PCM VERIFICATION Test. Refer to STANDARD PROCEDURE .
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