Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0101)
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON.
   3. Turn the tester ON.
   4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   5. Read DTCs.

      Result

      RESULT REFERENCE
      
      

      Display (DTC Output)	Proceed to
      P0101 and other DTCs	A
      P0101	B

      HINT:

      If any other DTCs besides P0101 are output, troubleshoot those DTCs first.

   B: REPLACE MASS AIR FLOW METER

   A: GO TO RELEVANT DIAGNOSTIC TROUBLE CODE CHART