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 DTCS OUTPUT 
   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: Hand-Held Tester Result Table (1 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   A: GO TO NEXT STEP. 

2. INSPECT THROTTLE BODY ASSY (VISUALLY CHECK THROTTLE VALVE) 

   Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly.

   NG: REPLACE THROTTLE BODY ASSY (See  THROTTLE BODY ASSY (3MZ-FE)  ) 

   OK: GO TO NEXT STEP. 

3. CHECK DTC OUTPUT 
   1. Clear DTCs (see DTC CHECK/CLEAR ).
   2. Start the engine, and depress and release the accelerator pedal quickly (fully open and fully close).
   3. Read DTCs (see DTC CHECK/CLEAR ).

      Result: 

      Fig 2: Hand-Held Tester Result Table (2 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE ECM (See  ECM (3MZ-FE)  ) 

   OK: GO TO NEXT STEP. 

   CHECK FOR INTERMITTENT PROBLEMS (See  CHECK FOR INTERMITTENT PROBLEMS  )