Inspection Procedure 6: When the Cruise Control ON/OFF Switch is Turned ON, the Cruise Control Indicator Light does not Illuminate < standard meter > or the Cruise Control Display Screen is not Displayed < high contrast meter > (However, the Cruise Control System is Normal): Diagnosis
- If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be stored. Prior to this diagnosis, diagnose the CAN bus lines.
- Before replacing the ECU, ensure that the CAN bus lines is normal.
- STEP 1. Diagnose the CAN bus line. CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
- Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."
- Turn the ignition switch to the "ON" position.
- Diagnose the CAN bus line. (Refer to EXPLANATION ABOUT THE SCAN TOOL (M.U.T.-III) CAN BUS DIAGNOSTICS )
- Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the check result satisfactory?
- YES: Go to Step 2.
- NO: Repair the CAN bus lines (Refer to CAN BUS DIAGNOSTIC TABLE ). Then go to Step 6.
- STEP 2. Check the MFI system diagnostic trouble code.
Using scan tool (M.U.T.-III), perform MFI system diagnostic trouble code (Refer to DIAGNOSIS FUNCTION < 2.4L ENGINE >, DIAGNOSIS FUNCTION < 3.0L ENGINE >).
Q: Is diagnostic trouble code No. U0141 stored?
- YES: Repair the MFI system (Refer to CODE NO. U0141: ETACS-ECU TIME-OUT < 2.4L ENGINE >, CODE NO. U0141: ETACS-ECU TIME-OUT < 3.0L ENGINE >). Then go to Step 6.
- NO: Go to Step 3.
- STEP 3. Check the ETACS system diagnostic trouble code.
Using scan tool (M.U.T.-III), perform ETACS system diagnostic trouble code (Refer to DIAGNOSIS FUNCTION ).
Q: Is diagnostic trouble code No. U0155 stored?
- YES: Repair the ETACS system (Refer to CODE NO. U0155: COMBINATION METER-ECU CAN COMMUNICATION TIMEOUT ). Then go to Step 6.
- NO: Go to Step 4.
- STEP 4. Check the combination meter system special function.
Using scan tool (M.U.T.-III), check the combination meter system special function (Refer to SPECIAL FUNCTION TABLE ).
- Item 2: LCD (AUTO) < High contrast meter >
- Item 6: Indicator (AUTO) < Standard meter >
Q: Is the check result normal?
- YES: Go to Step 5.
- NO: Repair the combination meter system (Refer to TROUBLE SYMPTOM CHART ). Then go to Step 6.
- STEP 5. Check the symptom.
Q: When the cruise control ON/OFF switch is turned ON, is the cruise control indicator light illuminated < standard meter > or the cruise control display screen displayed < high contrast meter >?
- YES: It can be assumed that this malfunction is intermittent (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
- NO: Replace the ECM (Refer to ECM < 2.4L ENGINE >, ECM < 3.0L ENGINE >). Then go to Step 6.
- STEP 6. Check the symptom.
Q: When the cruise control ON/OFF switch is turned ON, is the cruise control indicator light illuminated < standard meter > or the cruise control display screen displayed < high contrast meter >?
- YES: The procedure is complete.
- NO: Return to Step 1.