STEP 1. Using scan tool (M.U.T.-IIISE), check data list item 12: Accelerator Pedal Position Sensor (sub).
STEP 2. Measure the sensor supply voltage at accelerator pedal position sensor harness side connector.
(1) Disconnect the accelerator pedal position sensor connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal AP5 line and ground.- Voltage should be between 4.9 and 5.1 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.9 and 5.1 volts?
Go to Step 5. Go to Step 3.
STEP 3. Check of short to ground and open circuit in AP5 line between accelerator pedal position sensor connector and ECM connector.
STEP 4. Using scan tool (M.U.T.-IIISE), check data list item 12: Accelerator Pedal Position Sensor (sub).
STEP 5. Check of harness damage in AP5 line between accelerator pedal position sensor connector and ECM connector.
STEP 6. Check of short to ground, open circuit and harness damage in APSS line between accelerator pedal position sensor connector and ECM connector.
STEP 7. Replace the accelerator pedal position sensor.
STEP 8. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 . (2) Check the diagnostic trouble code (DTC).
Is DTC P2127 set?
Retry the troubleshooting. The inspection is complete.