Inspection Procedure

HINT: Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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 OTHER DTC OUTPUT (IN ADDITION TO DTC P0101) 
   1. Connect the hand-held tester or the OBD II scan tool to the DLC3.
   2. Turn the ignition switch to ON and turn the hand-held tester or the OBD II scan tool ON.
   3. Select the item: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
   4. Read DTCs.

      Result: 

      Fig 1: DTC Output Result Table

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT: If any other codes besides P0101 are output, perform troubleshooting for those DTCs first.

   B: REPLACE MASS AIR FLOW METER 

   A: GO TO NEXT STEP. 

   GO TO RELEVANT DTC CHART (See  DIAGNOSTIC TROUBLE CODE CHART  )