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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (SFI) - Diagnostics (2AZ-FE)) >> DTC P0120, P0122, P0123, P0220, P0223, P2135: Throttle/Pedal Position Sensor/Switch Circuit >> Inspection Procedure >> Hand-held tester:

Hand-held tester:

WARNING: This page is about a different variant/trim than selected.
  1. READ VALUE OF HAND-HELD TESTER (THROTTLE POS AND THROTTLE POS #2) 
    1. On the hand-held tester, enter the following menus: DIAGNOSIS/ENHANCED OBD II/DATA LIST/ALL/THROTTLE POS and THROTTLE POS #2. Read the values.

      Result: 

      Fig 1: Hand Held Tester Result Chart
      G02907803Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. B: Go to step   5 
    2. A: GO TO NEXT STEP. 
  2. CHECK WIRE HARNESS (THROTTLE POSITION SENSOR - ECM) 
    1. Disconnect the T13 throttle position sensor connector.
    2. Disconnect the E7 ECM connector.
    3. Measure the resistance of the wire harness side connectors.
      Fig 2: Identifying Throttle Position Sensor and ECM Connector Terminals
      G02907804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 3: Throttle Position Sensor Resistance Values
      G02907805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  3. INSPECT ECM (VC VOLTAGE^ 
    1. Disconnect the T13 throttle position sensor connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage of the ECM connector.
      Fig 4: Identifying E7 ECM Connector Terminals
      G02907806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TESTER CONNECTION AND CONDITION SPECIFICATIONS

      Tester Connection Specified Condition
      E7-18 (VC) - E7-28 (E2) 4.5 to 5.5 V
    1. NG: REPLACE ECM (See  REPLACEMENT  ) 
    2. OK: GO TO NEXT STEP. 
  4. REPLACE THROTTLE BODY ASSY (See  REPLACEMENT  ) 
    1. GO TO NEXT STEP. 
  5. READ OUTPUT PTC (THROTTLE POSITION SENSOR DTCS ARE OUTPUT AGAIN) 
    1. Clear the DTC (see DTC CHECK/CLEAR ).
    2. Start the engine.
    3. Run the engine at idle for 15 seconds or more.
    4. Read the DTC.

      Result: 

      DTC RESULT

      Display (DTC Output) Proceed to
      P0120, P0122, P0123, P0220, P0222, P0223 and/or P2135 are output again A
      No DTC output B
    1. B: SYSTEM OK 
    2. A: REPLACE ECM (See  REPLACEMENT  ) 
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