Inspection Procedure 5: Drum position sensor system malfunction
OPERATION
The drum position sensor detects the drum position (gear position), and sends the information to the engine-A-M/T-ECU.
PROBABLE CAUSES
- Malfunction of drum position sensor
- 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-111 drum position sensor 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 drum position sensor connector A-111 terminal No.1, 2, 3, 4 and engine-A-M/T-ECU connector A-08 terminal No.63, 64, 49, 48.
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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. Drum position sensor replacement.
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(1)Replace the drum position sensor.
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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 4.
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The inspection is complete.
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STEP 4. 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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