Inspection Procedure 6: Hunting (Repeated Acceleration and Deceleration) Occurs at the Set Vehicle Speed.


COMMENTS ON TROUBLE SYMPTOM


The vehicle speed sensor or the diesel fuel system is suspected.
note When the vehicle is driven with the low-speed gear in the sport mode, hunting occurs easily, however, this is not a failure. <A/T>

PROBABLE CAUSE



DIAGNOSIS

STEP 1. Check the diesel fuel system diagnosis code.
Refer to GROUP 13D - Troubleshooting, Diagnosis Function .

Q. Is any diagnosis code set?
Repair the diesel fuel system. (Refer to GROUP 13D - Troubleshooting, Inspection Chart for Diagnosis Trouble Code ). Then go to Step 3.
Go to Step 2.

STEP 2. Retest the system

Q. Does a hunting occur?
Replace the engine-ECU (Refer to GROUP 13D - Engine-ECU ). Then go to Step 3.
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 Malfunction ).

STEP 3. Retest the system

Q. Does a hunting occur?
Return to Step 1.
The procedure is complete.