Inspection Procedure 11
Inspection Procedure 11: When the "ON/OFF" Switch is Turned ON, "CRUISE" Indicator Light Inside Combination Meter does not Illuminate (However, Cruise Control System is Normal.)CIRCUIT OPERATION
The ECM detects "ON/OFF" switch "ON" signal to illuminate the "CRUISE" indicator light on the combination meter.
The "CRUISE" indicator light illuminate signal is transmitted from the ECM to the combination meter via CAN bus line.
COMMENT
The CAN bus line between the ECM and the ETACS-ECU and between the ETACS-ECU and the combination meter may be defective.
The combination meter, ETACS-ECU or ECM may also be defective.
TROUBLESHOOTING HINTS
- Malfunction of CAN bus system.
- Damaged harness or connector.
- Malfunction of the combination meter.
- Malfunction of the ETACS-ECU
- Malfunction of the ECM
DIAGNOSIS
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A
CAUTION: If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines. (Refer to Trouble code diagnosis) Diagnostic Trouble Code Descriptions
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector. Scan Tool Connecting
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line. How to Diagnose the CAN Bus Line
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Is the check result satisfactory?
YES : Go to Step 2
NO : Repair the CAN bus lines. Then go to Step 6.
STEP 2. Using scan tool MB991958, check for MFI system DTC.
1. Connect scan tool MB991958 to the data link connector. Scan Tool Connecting
2. Turn the ignition switch to the "ON" position.
3. Check for MFI system DTC (Refer to Diagnostic Function) [2.0L ENGINE Non-turbo> Diagnostic Function, (Refer to Diagnostic Function) [2.0L ENGINE Turbo> Diagnostic Function or (Refer to Diagnostic Function). [2.4L ENGINE>. Diagnostic Function
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Is DTC U0141 set?
YES : Repair the MFI system. Then go to Step 6.
NO : Go to Step 3.
STEP 3. Using scan tool MB991958, check for ETACS system DTC.
1. Connect scan tool MB991958 to the data link connector. Scan Tool Connecting
2. Turn the ignition switch to the "ON" position.
3. Check for ETACS system DTC. (Refer to Diagnostic Function.) How to Read and Erase Diagnostic Trouble Codes
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Is DTC U0155 set?
YES : Repair the ETACS system. Then go to Step 6.
NO : Go to Step 4.
STEP 4. Using scan tool MB991958, check the combination meter system data list item F7: Cruise control indicator.
1. Connect scan tool MB991958 to the data link connector. Scan Tool Connecting
2. Turn the ignition switch to the "ON" position.
3. Set scan tool MB991958 to data reading mode for combination meter system item F7: Cruise control indicator. (Refer to Data List Reference Table.) Service Data
4. Turn the ignition switch to the "LOCK" (OFF) position.
5. Disconnect scan tool MB991958.
Q: Is the check result satisfactory?
YES : Go to Step 5.
NO : Repair the combination meter system. Then go to Step 6.
STEP 5. Retest the system.
Q: Does the "CRUISE" indicator light illuminate when the "ON/OFF" switch is turned ON?
YES : It can be assumed that this malfunction is intermittent.
NO : Replace the ECM. When the ECM is replaced, register the encrypted code. Then go to Step 6.
STEP 6. Retest the system.
Q: Does the "CRUISE" indicator light illuminate when the "ON/OFF" switch is turned ON?
YES : The procedure is complete.
NO : Return to Step 1.