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When the ignition switch is turned to the "LOCK" (OFF) position, check that the ETACS-ECU does not set the diagnosis code.
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Q.
Is the diagnosis code set?
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 Refer to diagnosis code chart  .
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Q.
Is the check result normal?
Go to Step 3.
 Repair the defective connector.
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(1)Disconnect the connector, and measure at the wiring harness side.
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(2)Check the resistance between C-302 column switch connector terminal No.4 and body earth.
OK: Continuity exists (2 Ω or less)
Q.
Is the check result normal?
Go to Step 5.
Go to Step 4.
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- Check the earth wires for open circuit.
Q.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
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(1)Disconnect the connector, and measure at the wiring harness side.
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(2)Voltage between C-302 column switch connector No.1 and body earth.
OK: System voltage
Q.
Is the check result normal?
Go to Step 7.
Go to Step 6.
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| note |
Prior to the wiring harness inspection, check junction block connectors C-209, C-213 and joint connector C-132, and repair if necessary.
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- Check the power supply line for open circuit.
Q.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
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(1)Disconnect the connector, and measure at the wiring harness side.
(2)Turn the ignition switch to the "ON" position.
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(3)Voltage between C-302 column switch connector No.9 and body earth.
OK: System voltage
Q.
Is the check result normal?
Go to Step 9.
Go to Step 8.
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| note |
Prior to the wiring harness inspection, check junction block connectors C-207, C-209 and joint connector C-132, and repair if necessary.
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- Check the power supply line for open circuit.
Q.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the wiring harness.
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Q.
Is the check result normal?
Go to Step 10.
Repair the defective connector.
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- Check the communication lines for open circuit.
Q.
Is the check result normal?
Go to Step 11.
Repair the wiring harness.
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(1)Replace the column switch.
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(2)Check that the signals from the column switch are received.
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Q.
Is the check result normal?
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The procedure is complete.
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