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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 830 (3.0L Diesel - DTCS P0001-00 To P0202-00 - 1500) >> Diagnosis And Testing >> P0101-00-Mass Air Flow Sensor Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    NOTE:

    If there any DTCs related to Sensor Reference voltage present, perform the Diagnostics for those DTCs before continuing with this one.

    NOTE:

    If there any other DTCs related to the MAF present, perform the Diagnostics for those DTCs before continuing with this one.

    NOTE:

    If there any DTCs related to Intake Air present, perform the Diagnostics for those DTCs before continuing with this one.

    NOTE:

    If there any DTCs related to the Turbocharger present, perform the Diagnostics for those DTCs before continuing with this one.

    NOTE:

    If there any DTCs related to the EGR present, perform the Diagnostics for those DTCs before continuing with this one.

    1. Ignition on, engine not running.
    2. With the scan tool, erase DTCs in the PCM.
    3. Start the engine and allow it to reach normal operating temperature.
    4. 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 .
  2. AIR FILTER 
    1. Turn the ignition off.
    2. Remove and inspect the Air Filter for soiling or excessive dirt and debris which may cause air flow restriction

      Were any of these problems found?

      Yes 

      • Replace the Air Filter in accordance with the service information.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK FOR AIR RESTRICTIONS 
    NOTE:

    Inspect all air intake, crankcase vent and turbocharger related tubes for damage, restriction or poor connection. Any of these conditions can cause this DTC to set.

    NOTE:

    Inspect the exhaust system and related tubes for damage, restriction or poor connection. Any of these conditions can cause this DTC to set.

    1. Inspect the intake system, exhaust system and related tubes and connections.

      Were any problems found?

      Yes 

      No 

      • Go To  4
  4. CHECK FOR AIR LEAKS 
    1. Remove the Inlet Pressure Sensor.
    2. Connect smoke machine 84-04 to the Inlet Pressure Sensor port in the intake duct and begin injecting smoke into the intake system.
    3. Observe all intake system components for evidence of smoke leakage.

      Is there evidence of smoke leakage?

      Yes 

      No 

      • Go To  5
  5. CHECK THE (F343) FUSED ASD RELAY OUTPUT CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the MAF harness connector.
    3. Turn the ignition on.
    4. Using a 12-volt test light connected to ground, probe the (F343) Fused ASD Relay Output circuit at the MAF 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 

      • Repair the (F343) Fused ASD/Main Relay Output circuit for an open or high resistance.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  6. CHECK THE (Z909) GROUND CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Using a 12-volt test light connected to B+, probe the (Z909) Ground circuit at the MAF 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  7

      No 

      • Repair the (Z909) MAF/Intake Air Sensor Main Ground circuit for an open or high resistance.
      • Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
  7. EGR VALVE 
    NOTE:

    An EGR Valve that is stuck partially open can cause this DTC to set. Hard starting, rough running and black smoke from the tailpipe are signs of an EGR Valve that is stuck open.

    1. While starting and test driving the vehicle, observe for the conditions mentioned in the note above.

      Does the vehicle exhibit these conditions?

      Yes 

      No 

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