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- Connect the M.U.T.-III to the diagnosis connector.
- When the power of Vehicle Communication Interface (V.C.I.) is turned to ON, the indicator lamp of the Vehicle Communication Interface (V.C.I.) illuminates in green.
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OK: The indicator lamp of the Vehicle Communication Interface (V.C.I.) illuminates in green.
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Q.
Is the check result normal?
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- Check battery (Refer to GROUP 54A - Battery - On-vehicle Service - Battery Test
).
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Q.
Is the check result normal?
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- Voltage between terminal and earth.
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of open circuit, and short circuit in power supply line between diagnosis connector and battery.
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- Resistance between terminal earth lines and earth.
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OK: Continuity (2 Ω or less)
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of open circuit, and damage in earth line between diagnosis connector and body earth.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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- Use M.U.T.-III, perform CAN bus line diagnosis.
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Q.
Is the check result normal?
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Check Inspection Procedure - engine-ECU power supply, engine control relay, ignition switch-IG1 system (Refer to ).
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Perform troubleshooting for CAN (Refer to GROUP 54C - Troubleshooting - CAN Bus Diagnostics Table ).
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