DIAGNOSIS PROCEDURE |
STEP 1. Check the A/T-ECU terminal voltage. |
[A/T-ECU connector (harness side, connected)] |
Turn ON the ignition switch, and check the voltage between O/TS terminal and O/T- terminal. |
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Q.
Is the check result normal?
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Go to Step 6. |
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Go to Step 2. |
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STEP 2. Check the A/T fluid temperature sensor. |
Refer to . |
Q.
Is the check result normal?
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Go to Step 3. |
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Replace the valve body assembly. |
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STEP 3. Check for short to earth in O/TS, O/T- line between the A/T control solenoid valve assembly connector and A/T-ECU connector. |
Q.
Is the check result normal?
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Go to Step 4. |
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Repair the connector(s) or wiring harness. |
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STEP 4. Check for open circuit and short to earth in VIG1, VIG2 line between the fusible link and the CVT-ECU connector, and check for open circuit in GND1, GND2 line between the CVT-ECU connector and body earth. |
Q.
Is the check result normal?
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Go to Step 5. |
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Repair the connector(s) or wiring harness. |
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STEP 5. Check the A/T-ECU connector pin terminal and the connection status. |
Q.
Is there a failure point?
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Repair or replace the failure section. |
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Replace the A/T-ECU. |
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STEP 6. Erase the diagnosis code, and drive the vehicle for a while. |
Check that the normal code is displayed. |
Q.
Is the check result normal?
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The procedure is complete. |
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Replace the A/T-ECU. |
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