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If only the speedometer does not operate, the combination meter, the wiring harness or
its connector may be defective.
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- Damaged harness wires and connectors
- Malfunction of combination meter
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Use the M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
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Check if diagnosis code is set in the engine-ECU.
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Q.
Is the diagnosis code set?
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Troubleshoot the engine (Refer to GROUP 13B - Troubleshooting <6B3>,
GROUP 13C - Troubleshooting <4N1> or GROUP 13E - Troubleshooting <4D5>).
Complete the engine troubleshooting, and then go to Step 6.
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Check the vehicle speed signal data list of engine-ECU.
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Item No.4: Vehicle speed signal (Refer to GROUP 13B - Data list reference table <6B1>,
GROUP 13C - Data list reference table <4N1> or GROUP 13E - Data
list reference table <4D5>).
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Q.
Is the check result normal?
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Troubleshoot the engine (Refer to GROUP 13B - Troubleshooting <6B3>,
GROUP 13C - Troubleshooting <4N1>, GROUP 13E - Troubleshooting <4D5>).
Complete the engine troubleshooting.
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(1)Connect the M.U.T.-III to the diagnosis connector.
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(2)Use the M.U.T.-III to enter simulated vehicle speed.
OK: The speedometer shows that simulated vehicle speed.
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Q.
Is the check result normal?
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Replace combination meter, then go to Step 6.
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Q.
Is the check result normal?
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Replace the combination meter, and then go to Step 6.
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Check that the speedometer works normally.
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Q.
Is the check result normal?
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The procedure is complete. (If no malfunctions are found in all steps, an intermittent
malfunction is suspected. Refer to GROUP 00 / How to Cope with Intermittent Malfunction).
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