Inspection Procedure 2

Inspection Procedure 2: Accelerator Pedal Operation not Smooth (Over Acceleration)

COMMENT

The accelerator pedal, its installation condition or the accelerator pedal position sensor is suspected.

TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CASE:)

- Malfunction of the accelerator pedal.
- Incorrectly installed accelerator pedal.
- Malfunction of the accelerator pedal position sensor.

DIAGNOSIS

Required Special Tools:

- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

STEP 1. Check if the accelerator pedal is installed correctly.

Q. Is the accelerator pedal installed correctly?

YES Go to Step 2.
NO Remove and reinstall the accelerator pedal (Refer to Service and Repair). Then go to Step 3.
STEP 2. Using scan tool MB991958, read the MFI system DTC.





(1)
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.

Ensure that the ignition switch is at the "LOCK" (OFF) position.
(2)Start up the personal computer.
(3)Connect special tool MB991827 to special tool MB991824 and the personal computer.
(4)Connect special tool MB991910 to special tool MB991824.
(5)Connect special tool MB991910 to the data link connector.
(6)Turn the power switch of special tool MB991824 to the "ON" position.
NOTE:
When special tool MB991824 is energized, special tool MB991824 indicator light will be illuminated in a green color.

(7)Start the M.U.T.-III system on the personal computer.
(8)Turn the ignition switch to the "ON" position.
(9)Check for MFI system DTC. Reading and Clearing Diagnostic Trouble Codes).
(10)Turn the ignition switch to the "LOCK" (OFF) position, and then remove scan tool MB991958 in the reverse order of installation.

Q. Is any DTC set?

YES Repair MFI system Multiport Fuel Injection (MFI)). Then go to Step 3.

NO Go to Step 3.

STEP 3. Retest the system.

Q. Does the accelerator pedal work normally?

YES The procedure is complete.
NO Return to Step 1.