Inspection Procedure 5: Cruise Control cannot be Set (No Response when the "COAST/SET" Switch and the "ACC/RES" Switch is Pressed.)


COMMENTS ON TROUBLE SYMPTOM



note Press the cruise control switches one by one securely. Otherwise, the cruise control system may not be started.

PROBABLE CAUSES



  • Malfunction of the diesel fuel system.
  • Malfunction of the A/T system.
  • Malfunction of the cruise control switch.
  • Malfunction of the stop lamp switch.
  • Malfunction of the clutch switch. <M/T>
  • Malfunction of the inhibitor switch. <A/T>
  • Malfunction of the engine-ECU.

DIAGNOSIS PROCEDURE

STEP 1. Check the diesel fuel system diagnosis code.
Using M.U.T.-III, perform MPI system diagnosis code (Refer to GROUP 13B - Troubleshooting, Diagnosis Function .)

Q. Is any diagnosis code set?
Repair the diesel fuel system (Refer to GROUP 13B - Troubleshooting, Inspection Chart for Diagnosis Code .) Then go to Step 9.
Go to Step 3. <M/T>
Go to Step 2. <A/T>

STEP 2. Check the A/T system diagnosis code. <A/T>
Using M.U.T.-III, perform A/T system diagnosis code (Refer to GROUP 23C - Troubleshooting, Diagnosis Function .)

Q. Is any diagnosis code set?
Repair the A/T system (Refer to GROUP 23C - Troubleshooting, Diagnosis Code Chart .) Then go to Step 9.
Go to Step 3.

STEP 3. Check the diagnosis code.
(1)Disconnect the negative battery terminal, and erase the diagnosis code of the cruise control system.
(2)Connect the negative battery terminal.
(3)Turn the ignition switch to the "ON" position, and press the "ON/OFF" switch to turn the cruise control system to ON (turn ON the cruise control indicator lamp.)
(4)After turning the cruise control system to ON, when 2 minutes or more has elapsed without operating the cruise control switches.
(5)With the cruise control switches not operated, depress the brake pedal for several seconds, and then read the diagnosis code of the cruise control system (Refer to .)

Q. Is any diagnosis code set?
Repair the cruise control system (Refer to - Diagnosis Code Chart.) Then go to Step 9.
Go to Step 4.

STEP 4. Check the data list.
Using M.U.T.-III, check the data list (Refer to - data list reference table.)

  • Item 136: "ON/OFF" switch.
  • Item 137: "CANCEL" switch.
  • Item 138: "COAST/SET" switch.
  • Item 139: "ACC/RES" switch.

Q. Is the check result normal?
Go to Step 5.
Check the cruise control switch system (Refer to - Diagnosis Code Procedures, Code No.P1564: Abnormal voltage at the cruise control switch.) Then go to Step 9 .

STEP 5. Check the data list.
Using M.U.T.-III, check the data list (Refer to - data list reference table.)

  • Item 134: Brake switch.
  • Item 135: Stop lamp switch.

Q. Is the check result normal?
Go to Step 6. <M/T>
Go to Step 7. <A/T>
Check the stop lamp switch system (Refer to - Diagnosis Code Procedures, Code No.P1571: Malfunction of the stop lamp switch.) Then go to Step 9.

STEP 6. Check the data list. <M/T>
Using M.U.T.-III, check the data list (Refer to - data list reference table.)

  • Item 131: Clutch switch.

Q. Is the check result normal?
Go to Step 8.
Check the clutch switch system (Refer to - Symptom Procedures, Inspection Procedure 2.) Then go to Step 9.

STEP 7. Check the data list. <A/T>
Using M.U.T.-III, check the data list (Refer to - data list reference table.)

  • Item 42: Inhibitor switch

Q. Is the check result normal?
Go to Step 8.
Check the inhibitor switch system [Refer to GROUP 23C - Troubleshooting, Diagnosis Code Procedures Code No. P0707: Inhibitor Switch System (Open Circuit) , Code No. P0708: Inhibitor Switch System (Short Circuit) .] Then go to Step 9.

STEP 8. Check the symptoms.

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 Malfunctions ).
Replace the engine-ECU (Refer to GROUP 13B - Engine-ECU .) Then go to Step 9.

STEP 9. Check the symptoms.

Q. Can cruise control be set?
The procedure is complete.
Return to Step 1.