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 more than 8.3 V.
Judgement Criterion
  • The coil current of the throttle valve control servo is more than 8 A.

FAIL-SAFE AND BACKUP FUNCTION



  • Throttle opening degree position is in default position.

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-12 electronic-controlled throttle valve connector

Q. Is the check result normal?
Go to Step 2 .
Repair or replace the connector.

STEP 2. Check throttle valve control servo itself.

  • Throttle valve control servo check (Refer to ).

Q. Is the check result normal?
Go to Step 3 .
Replace the throttle body assembly.

STEP 3. Connector check: B-26 engine-ECU connector

Q. Is the check result normal?

Go to Step 4 .
Repair or replace the connector.

STEP 4. Check harness between B-12 (terminal No. 1) electronic-controlled throttle valve connector and B-26 (terminal No. 15) engine-ECU connector.

  • Check output line for short circuit and damage.

Q. Is the check result normal?
Go to Step 5 .
Repair the damaged harness wire.

STEP 5. Check harness between B-12 (terminal No. 2) electronic-controlled throttle valve connector and B-26 (terminal No. 16) engine-ECU connector.

  • Check output line for short circuit and damage.

Q. Is the check result normal?
Go to Step 6 .
Repair the damaged harness wire.

STEP 6. M.U.T.-III diagnosis code

  • Reconfirmation of diagnosis code.

Q. Is diagnosis code set?

Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).