STEP 1. Using scan tool MB991958, check data list item 12: Accelerator Pedal Position Sensor (sub).
caution | To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. |
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the data reading mode for item 12, Accelerator Pedal Position Sensor (sub).- Output voltage should be between 400 and 600 millivolts when foot is released from accelerator pedal.
- Output voltage should be 2,000 millivolts or more when accelerator pedal is fully depressed.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions . Go to Step 2.
STEP 2. Check harness connector C-23 at accelerator pedal position sensor for damage.
STEP 3. Check the continuity at accelerator pedal position sensor harness side connector C-23.
STEP 4. Check harness connector B-27 at ECM for damage.
STEP 5. Check for open circuit and harness damage between accelerator pedal position sensor connector C-23 (terminal No. 5) and ECM connector B-27 (terminal No. 79).
STEP 6. Using scan tool MB991958, check data list item 12: Accelerator Pedal Position Sensor (sub).
STEP 7. Replace the accelerator pedal assembly.
(1) Replace the accelerator pedal position assembly.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is DTC P2128 set?
Replace the ECM (Refer to, Removal and Installation ). Then go to Step 8. The inspection is complete.
STEP 8. Using scan tool MB991958, read the diagnostic trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the DTC has been deleted, read the DTC again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is DTC P2128 set?
Retry the troubleshooting. The inspection is complete.