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CRUISE CONTROL ENGINE AND EMISSION CONTROL 17-17 STEP 5. Check the data list. • Item 75: CANCEL switch • Item 86: N/OFF switch • Item 91: "RES + switch • Item 92: SET − switch Q: Is the check result normal? YES : Go to Step 6. NO : Check the cruise control switch system − Diagnosis Code Procedures, Code No. P0578: Abnormal STEP 6. Check the data list. • Item 74: Stop lamp switch • Item 89: Brake switch Q: Is the check result normal? YES : Go to Step 7. NO : Check the stop lamp switch system (Refer
− Diagnosis Code Procedures, Code No. P0504: Malfunction of the stop STEP 7. Check the data list. • Item 88: Inhibitor switch Q: Is the check result normal? YES : Go to Step 8. NO : Check the CVT system (Refer to GROUP − Troubleshooting, Inspection Procedures for Diagnosis Code, Code STEP 8. Check the symptom. Q: Can cruise control be set? YES : It can be assumed that this malfunction is intermittent (Refer to GROUP 00 − How to Use Troubleshooting/Inspection Service NO : Replace the engine-ECU (Refer to GROUP − Engine-ECU ). Then go to Step 9. STEP 9. Check the symptom. Q: Can cruise control be set? YES : The procedure is complete. NO : Return to Step 1. Inspection Procedure 5: Hunting (Repeated Acceleration and Deceleration) Occurs at the Set Vehicle COMMENTS ON TROUBLE SYMPTOM The secondary pulley speed sensor signal (vehicle NOTE: When the vehicle is driven with the PROBABLE CAUSES • Malfunction of CAN bus system. • Malfunction of the secondary pulley speed sen- sor. • Malfunction of the CVT system. • Malfunction of the throttle body. • Malfunction of the engine-ECU. DIAGNOSIS PROCEDURE CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior • Before replacing the ECU, ensure that the CAN bus lines is normal. STEP 1. Check the CAN bus system diagnosis. − Explanation About The M.U.T-III Can Bus Diagnostics ). Q: Is the check result satisfactory? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP − Troubleshooting, Can Bus Diagnostic Table ). Then go to Step 6. |