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Code No.35 Reduction Solenoid Valve System <5A/T>
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OPERATION
- Solenoid valve closes or opens according to the signals from the engine-A/T-ECU.
- The engine-A/T-ECU energizes or deenergizes solenoid valve, based on input signals such as throttle position sensor opening angle, inhibitor switch, etc.
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DIAGNOSIS CODE SET CONDITION
If the drive terminal voltage of the reduction solenoid valve is 3.0 V or less, it is judged that there is a short-circuit or open circuit in the reduction solenoid valve, and the corresponding code is output.
If diagnosis code 35 is output 4 times, the transmission is fixed in 3rd as a fail-safe measure.
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PROBABLE CAUSES
- Malfunction of reduction solenoid valve
- Damaged harness wires and connectors
- Malfunction of the engine-A/T-ECU
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STEP 1. Read diagnosis code by using the MUT-II/III. Q: Are diagnosis code 31 and 36 set?
YES:
Go to Step 9  .
NO:
Go to Step 2 .
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STEP 2. MUT-II/III actuator test - Item 05: Reduction solenoid valve
OK: Operating sound can be heard.
Q: Is the check result normal?
YES:
Intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction  .)
NO:
Go to Step 3 .
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STEP 3. Connector check: B-21 A/T control solenoid valve assembly connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 4 .
NO:
Repair the defective connector.
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STEP 4. Measure the resistance at A/T control solenoid valve assembly connector B-21.
Disconnect the connector, and measure the resistance between terminal No.8 and No.10 at the solenoid valve side.
OK: 2.7 -
3.4 Ω
(A/T fluid temperature 20°C)
Q: Is the check result normal?
YES:
Go to Step 5 .
NO:
Replace the reduction solenoid valve. (Refer to GROUP 23C -
Valve Body ).
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STEP 5. Measure the voltage at engine-A/T-ECU connector C-109. - Connect A/T control solenoid valve assembly connector B-21.
- Turn the ignition switch to the ON position.
- Measure the voltage between engine-A/T-ECU connector C-109 terminal No.119 and earth.
OK: Battery positive voltage
Q: Is the check result normal?
YES:
Go to Step 8 .
NO:
Go to Step 6 .
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STEP 6. Connector check: C-109 engine-A/T-ECU connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 7 .
NO:
Repair the defective connector.
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STEP 7. Check the harness between A/T control solenoid valve assembly connector B-21 terminal No.8 and engine-A/T-ECU connector C-109 terminal No.119.
Check the output line for short or open circuit.
Q: Is the check result normal?
YES:
Go to Step 8 .
NO:
Repair the wiring harness.
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STEP 8. MUT-II/III actuator test - Item 05: Reduction solenoid valve
OK: Operating sound can be heard.
Q: Is the check result normal?
YES:
Intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent Malfunction .)
NO:
Replace the engine-A/T-ECU.
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STEP 9. Connector check: B-21 A/T control solenoid valve assembly connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 10 .
NO:
Repair the defective connector.
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STEP 10. Measure the resistance at A/T control solenoid valve assembly connector B-21.
Disconnect the connector, and measure the resistance between terminal No.8 and No.10 at the solenoid valve side.
OK: 2.7 -
3.4 Ω
(A/T fluid temperature 20°C)
Q: Is the check result normal?
YES:
Go to Step 11 .
NO:
Replace the solenoid valve harness. (Refer to GROUP 23C -
Valve Body .)
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STEP 11. Connector check: B-16X A/T control relay connector
Check for the contact with terminals.
Q: Is the check result normal?
YES:
Go to Step 12 .
NO:
Repair the defective connector.
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STEP 12. Check the harness between A/T control solenoid valve assembly connector B-21 terminal No.10 and A/T control relay connector B-31X terminal No.1.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES:
Go to Step 8 .
NO:
Repair the wiring harness.
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