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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 power supply line and body earth.
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Q.
Is the check result normal?
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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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Repair or replace the connector, or repair the damaged harness wire.
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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 fuse in the ETACS-ECU, and replace if necessary. If the fuse is normal, replace the ETACS-ECU.
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Repair or replace the connector, or repair the damaged harness wire.
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- Resistance between terminals earth lines and body 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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Repair or replace the connector, or check and repair the harness between the diagnosis connector terminal earth lines and body earth.
- Check earthing line for open circuit and damage.
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- Disconnect connectors, and measure at ETACS-ECU side.
- Continuity check between terminal +B1 and MUT.
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Q.
Is the check result normal?
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Repair or replace the connector, or check fuse in the ETACS-ECU, and replace if necessary. If the fuse is normal, replace the ETACS-ECU.
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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, or repair the damaged harness wire.
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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, or repair the damaged harness wire.
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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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