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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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- Measure battery voltage at cranking.
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Q.
Is the check result normal?
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Battery check (Refer to GROUP 54A - Battery - On-vehicle Service - Battery
Test ).
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Q.
Is the check result normal?
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Repair or replace the connector.
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- Disconnect connector and measure at harness side.
- Voltage between terminal No. 16 and earth.
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Q.
Is the check result normal?
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Q.
Are the check results normal?
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Repair or replace the connector.
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- Disconnect connectors and measure at the ETACS-ECU side.
- Continuity check between terminal No. 1 (C-309) and No. 8 (C-317)
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Q.
Is the check result normal?
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Repair or replace the ETACS-ECU.
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- Check power supply line for open/short circuit.
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Q.
Is the check result normal?
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Check and repair the harness between C-317 (terminal
No. 8) ETACS-ECU connector and C-127 (terminal No. 16) diagnosis connector.
- Check power supply line for open/short circuit.
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Repair the damaged harness wire.
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- Pull out relay and measure at connector side.
- Resistance between terminal No. 4, No. 5 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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Check and repair the harness between the C-127 (terminal
No. 4 or terminal No. 5) diagnosis connector and body earth.
- Check earthing line for open circuit and damage.
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Q.
Is the check result normal?
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Repair or replace the connector.
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- Disconnect connectors and measure at the ETACS-ECU side.
- Continuity check between terminal No. 1 (C-309) and No. 8 (C-317)
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Q.
Is the check result normal?
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Repair or replace the connector.
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- Check power supply line for damage.
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Q.
Is the check result normal?
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Repair or replace the connector.
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- Check power supply line for damage.
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Q.
Is the check result normal?
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Refer to the M.U.T.-III reference manual.
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Repair or replace the connector.
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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 engine-ECU power supply, engine control relay and ignition switch - IG1
system (Refer to Inspection Procedure 3 ).
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Perform troubleshooting for CAN (Refer to GROUP 54C - Troubleshooting - CAN
Bus Diagnostics Table ).
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