|
Use M.U.T.-III to perform the CAN bus diagnosis.
|
|
Q.
Is the check result normal?
|
|
Repair the CAN bus lines (Refer to GROUP 54C -
Troubleshooting ).
On completion, go to Step 2.
|
|
|
|
Q.
Is diagnosis code set?
|
|
Troubleshoot the ACC system diagnosis code (Refer to ).
|
|
|
|
Check if the diagnosis code is set in the engine-ECU (Refer to GROUP 13B -
Troubleshooting,
Diagnosis Function) <6B3>
or (Refer to GROUP 13C -
Troubleshooting,
Diagnosis Function) <4N1>.
|
|
Q.
Is the diagnosis code set?
|
|
Troubleshoot the engine-ECU diagnosis code (Refer to GROUP 13B -
Troubleshooting,
Inspection Chart for Diagnosis Code) <6B3>
or (Refer to GROUP 13C -
Troubleshooting,
Inspection Chart for Diagnosis Code) <4N1>.
|
|
|
|
Check if the diagnosis code is set in the ASTC-ECU (Refer to GROUP 35C -
Troubleshooting <ASTC-ECU>,
Diagnosis Function).
|
|
Q.
Is the diagnosis code set?
|
|
Troubleshoot the ASTC-ECU diagnosis code (Refer to GROUP 35C -
Troubleshooting <ASTC-ECU>, Diagnosis
Code Chart ).
|
|
|
|
Check if the diagnosis code is set in the A/T-ECU (Refer to GROUP 23A -
Troubleshooting <A/T>,
Diagnosis Function).
|
|
Q.
Is the diagnosis code set?
|
|
Troubleshoot the A/T-ECU diagnosis code (Refer to GROUP 23A -
Troubleshooting <A/T>,
Diagnosis Code Chart).
|
|
|
|
The system should be turned ON when the cruise control switch is operated.
|
|
Q.
Is the system turned ON by operating the cruise control switch?
|
|
Go to Step 7 <6B3>
or Step 8 <4N1>.
|
|
|
|
Refer to GROUP 17 -
Cruise Control system, Troubleshooting, Inspection
Procedure 9: When the cruise control switch is operated, the system is not turned on.
|
|
|
|
Using M.U.T.-III, check the data list of MPI system (Refer to GROUP 17 -
Cruise
Control system, Troubleshooting, Data List Reference Table).
|
|
- Item No. 75: CANCEL switch
- Item No. 92: SET -
switch
|
|
Q.
Is the check result normal?
|
|
Using M.U.T.-III, check the data list of diesel fuel system (Refer to GROUP 17 -
Cruise
Control system, Troubleshooting, Data List Reference Table).
|
|
- Item No. 137: CANCEL switch.
- Item No. 138: SET -
switch.
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
Replace the engine-ECU (Refer to GROUP 13B -
Engine-ECU) <6B3>
or
(Refer to GROUP 13C -
Engine-ECU) <4N1>.
|
|
|
|
Replace the cruise control switch (Refer to ).
|
|
|
|
(1)Drive the vehicle for approx. 3 minutes.
|
|
Q.
Can cruise control be set?
|
|
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).
|
|
|
|
Replace the ACC/FCM-ECU (Refer to ).
|
|
|