Hand-held tester:
- Connect hand-held tester, and read the voltage for accelerator pedal position sensor data.
PREPARATION:
- Connect the hand-held tester to the DLC3.
- Turn the ignition switch ON and push the hand-held tester main switch ON.
- Enter the following menu: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ETCS / ACCEL POS #1 and ACCEL POS #2.
CHECK:
Read the voltage for the accelerator pedal position sensor data.
OK:
ACCELERATOR PEDAL POSITION VOLTAGE CHECKAccelerator pedal ACCEL POS #1 ACCEL POS #2 Released 0.5 to 1.1 V 1.2 to 2.0 V Depressed 2.6 to 4.5 V 3.4 to 5.3 V - OK: Replace ECM (See INSPECTION ).
- NG: Go to next step.
- Check for open and short in harness and connector between accelerator pedal position sensor and ECM.
PREPARATION:
- Disconnect the A37 accelerator pedal position sensor connector.
- Disconnect the E4 ECM connector.
CHECK:
Measure the resistance between the wire harness side connectors.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK:
Standard (Check for open):
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Specified Condition VPA (A37-6) - VPA (E4-22) Below 1 Ω EPA (A37-5) - EPA (E4-28) Below 1 Ω VCPA (A37-4) - VCPA (E4-26) Below 1 Ω VPA2 (A37-3) - VPA2 (E4-23) Below 1 Ω EPA2 (A37-2) - EPA2 (E4-29) Below 1 Ω VCP2 (A37-1) - VCP2 (E4-27) Below 1 Ω Standard (Check for short):
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Specified Condition VPA (A37-6) or VPA (E4-22) - Body ground 10 kΩ or higher EPA (A37-5) or EPA (E4-28) - Body ground 10 kΩ or higher VCPA (A37-4) or VCPA (E4-26) - Body ground 10 kΩ or higher VPA2 (A37-3) or VPA2 (E4-23) - Body ground 10 kΩ or higher EPA2 (A37-2) or EPA2 (E4-29) - Body ground 10 kΩ or higher VCP2 (A37-1) or VCP2 (E4-27) - Body ground 10 kΩ or higher - NG: Repair or replace harness or connector.
- OK: Replace accelerator pedal assembly.