Code No. P2101: Throttle Valve Control Servo Magneto Malfunction


OPERATION



  • Controls the current that is applied from the engine-ECU connector terminals ETV+, ETV- to the electronic-controlled throttle valve connector terminals.

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. Check throttle valve control servo itself.

  • Electronic-controlled throttle valve control check.
  • Throttle valve control servo check (Refer to ).

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

STEP 2. Check harness between electronic-controlled throttle valve connector terminal and engine-ECU connector terminal ETV+.

  • Check output line for short circuit and damage.

Q. Is the check result normal?
Go to Step 3.
Repair or replace the connector, or repair the damaged harness wire.

STEP 3. Check harness between electronic-controlled throttle valve connector terminal and engine-ECU connector terminal ETV-.

  • Check signal line for short circuit and damage.

Q. Is the check result normal?
Go to Step 4.
Repair or replace the connector, or repair the damaged harness wire.

STEP 4. 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 ).