Inspection Procedure 3: Shift actuator 1, 2 system malfunction
OPERATION
- Shift actuator 1 and 2 operate the motor inside according to signal from the engine-A-M/T-ECU. The motor is engaged with the gear of the drum that operates the shift fork. When the drum is turned, the shift fork operates and performs gear shift.
- Shift actuator 1 allows the transmission to shift to 1st, 3rd, 5th and 6th gear. Shift actuator 2 allows the transmission to shift to 2nd, 4th and reverse gear.
PROBABLE CAUSES
- Malfunction of shift actuator 1, 2
- Damaged harness wires and connectors
- Malfunction of the engine-A/T-ECU
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STEP 1. Connectors check: A-08 engine-A-M/T-ECU connector, A-110 shift actuator 1 connector, A-112 shift actuator 2 connector.
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Check for the contact with terminals.
Q.
Is the check result normal?
 Go to Step 2.
 Repair the defective connector.
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STEP 2. Check the wiring harness between shift actuator 1 connector A-110 terminal No.1, 2, 3, 4, 5, 6 and engine-A-M/T-ECU connector A-08 terminal No.1, 44, 42, 43, 45, 2.
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Check the wiring harness for short and open circuit.
Q.
Is the check result normal?
Go to Step 3.
Repair the wiring harness.
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STEP 3. Check the wiring harness between shift actuator 2 connector A-112 terminal No.1, 2, 3, 4, 5, 6 and engine-A-M/T-ECU connector A-08 terminal No.3, 59, 57, 58, 60, 4.
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Check the wiring harness for short and open circuit.
Q.
Is the check result normal?
Go to Step 4.
Repair the wiring harness.
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STEP 4. Shift actuator 1, 2 replacement.
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(1)Replace the shift actuator 1,2 (replace the shift actuator assembly).
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(2)Test drive the vehicle.
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(3)Check if a malfunction takes place again.
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Q.
Does a malfunction take place again?
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Go to Step 5.
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The inspection is complete.
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STEP 5. Engine-A-M/T-ECU replacement.
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(1)Replace the engine-A-M/T-ECU. Then perform the variant coding and write the VIN data (Refer to GROUP 00, Precautions Before Service - How to Perform Variant Coding  ).
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(2)Test drive the vehicle.
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(3)Check if a malfunction takes place again.
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Q.
Does a malfunction take place again?
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Go to Step 1.
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The inspection is complete.
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