Code No. P2101: Throttle Valve Control Servo Magneto Malfunction
OPERATION
- Controls the current that is applied from the engine-ECU (terminals No. 15,
No. 16) to the electronic-controlled throttle valve (terminals No. 1, No. 2).
FUNCTION
- Engine-ECU check whether the throttle valve control servo magneto failed.
TROUBLE JUDGMENT
Check Condition
- Battery positive voltage is higher than 8.3 V.
- The coil current of the throttle actuator control motor is 8 A or more.
PROBABLE CAUSES
- Failed throttle valve control servo.
- Short circuit or harness damage in throttle valve control servo circuit or lose
connector contact.
- Failed engine-ECU
DIAGNOSIS PROCEDURE |
STEP 1. Connector check: B-20 electronic-controlled throttle valve connector |
Q.
Is the check result normal?
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Go to Step 2 . |
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Repair or replace the connector. |
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STEP 2. Perform resistance measurement at B-20 electronic-controlled throttle valve connector. |
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OK: 0.3 - 100 kΩ (at 20 °C) |
Q.
Is the check result normal?
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Go to Step 3 . |
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Replace the throttle body assembly. |
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STEP 3. Connector check: B-29 engine-ECU connector |
Q.
Is the check result normal?
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Go to Step 4 . |
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Repair or replace the connector. |
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STEP 4. Check harness between B-20 (terminal No. 1) electronic-controlled throttle valve connector and B-29 (terminal No. 15) engine-ECU connector. |
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Q.
Is the check result normal?
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Go to Step 5 . |
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Repair the damaged harness wire. |
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STEP 5. Check harness between B-20 (terminal No. 2) electronic-controlled throttle valve connector and B-29 (terminal No. 16) engine-ECU connector. |
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Q.
Is the check result normal?
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Go to Step 6 . |
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Repair the damaged harness wire. |
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STEP 6. M.U.T.-III diagnosis code |
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Q.
Is diagnosis code set?
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Replace the engine-ECU. |
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ). |
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