Inspection Procedure 2
Inspection Procedure 2: The speedometer does not work (the other meters work).TECHNICAL DESCRIPTION (COMMENT)
If only the speedometer does not operate, the transaxle control module and combination meter may have a problem.
TROUBLESHOOTING HINTS
- The transaxle control module may be defective
- The combination meter may be defective
DIAGNOSIS
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicles Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
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. Refer to "How to connect the Scan Tool (M.U.T.-III)." How to Connect the Scan Tool (M.U.T.-III)
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus line (Refer to Controller area network Diagnosis).
STEP 2. Using scan tool MB991958, read the combination meter diagnostic trouble code.
Check if DTC is set to the combination meter.
Q: Is the DTC set?
YES : Troubleshoot the combination meter. Diagnostic Trouble Code Descriptions
NO : Go to Step 3.
STEP 3. Using scan tool MB991958, read the CVT diagnostic trouble code.
Check if diagnosis code is set to the CVT.
Q: Is the DTC set?
YES : Troubleshoot the CVT (Refer to Automatic Transaxle Diagnosis).
NO : Go to Step 4.
STEP 4. Using scan tool MB991958, check data list.
1. Turn the ignition switch to the "ON" position.
2. Check the data list on the combination meter.
- Item 80: Speedometer
- Should read vehicle speed.
3. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does it read vehicle speed?
YES : The trouble can be an intermittent malfunction (Refer to general (Body and Chassis) How to use Troubleshooting/inspection Service Points How to Cope with Intermittent Malfunction).
NO : Go to Step 5.
STEP 5. Check the speedometer
Use scan tool MB991958 to enter simulated vehicle speed.
1. Turn the ignition switch to the "ON" position.
2. Select "System select" from the start-up screen.
3. Select "From 2006 MY" under "Model Year". Check that "Vehicle Information" contents are correct.
4. Select "Meter" from "System List", and then press "OK" button.
NOTE: If "Loading Option Setup" list is shown, tick appropriate box.
5. Select "Simulated vehicle Speed Output."
OK: The speedometer shows that simulated vehicle speed.
Q: Is the check result satisfactory?
YES : Go to Step 6.
NO : Replace the combination meter.
STEP 6. Retest the system.
Check that the speedometer works normally.
Q: Is the check result normal?
YES : The procedure is complete.
NO : Go to Step 1.