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CRUISE CONTROL ENGINE AND EMISSION CONTROL 17-24 Inspection Procedure 4: When the "CANCEL" Switch is Pushed, Cruise Control is not Cancelled. COMMENT ON TROUBLE SYMPTOM PROBABLE CAUSE • Malfunction of the cruise control switch. • Malfunction of the engine-ECU. DIAGNOSIS PROCEDURE STEP 1. Check the data list.
− data list reference table). • Item 137: "CANCEL" switch Q: Is the check result normal? YES : Go to Step 2. NO : Check the cruise control switch system − Diagnosis Code Procedures, Code No.P1564: Abnormal STEP 2. Check the symptom. Q: When the "CANCEL" switch is pushed, is the cruise control cancelled? 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 3. STEP 3. Check the symptom. Q: When the "CANCEL" switch is pushed, is the cruise control cancelled? The procedure is complete. NO : Return to Step 1. Inspection Procedure 5: Cruise Control cannot be Set (No Response when the "COAST/SET" Switch COMMENTS ON TROUBLE SYMPTOM PROBABLE CAUSE • Malfunction of CAN bus system. • Malfunction of the diesel fuel system. • Malfunction of the A/T system <A/T>. • Malfunction of the ASTC 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 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 11. |