Inspection Procedure

HINT:

Read freeze frame data using the intelligent tester. The ECM (Included in HV control ECU) 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 to the ON position.
   3. Turn the tester ON.
   4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   5. Read the DTCs.

   Result 

   RESULT REFERENCE
   
   

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

   HINT:

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

   B: REPLACE MASS AIR FLOW METER 

   A: GO TO  DTC CHART