Code No. P2101: Throttle Valve Control Servo Magneto Malfunction








OPERATION



  • Controls the current that is applied from the engine-A/T-ECU (terminals No. 133, No. 141) to the electronic-controlled throttle valve (terminals No. 5, No. 6).

FUNCTION



  • Engine-A/T-ECU check whether the throttle valve control servo magneto failed.

TROUBLE JUDGMENT


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

PROBABLE CAUSES



  • Failed throttle valve control servo.
  • Short circuit in throttle valve control servo circuit or loose connector contact.
  • Failed engine-A/T-ECU

DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-31 electronic-controlled throttle valve connector

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

STEP 2. Perform resistance measurement at B-31 electronic-controlled throttle valve connector.

  • Disconnect connector, and measure at electronic-controlled throttle valve side.
  • Resistance between terminal No. 5 and No. 6.
OK: 0.3 - 100 Ω (at 20 °C)

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

STEP 3. Connector check: D-218 engine-A/T-ECU connector

Q. Is the check result normal?

Go to Step 4 .
Repair or replace the connector.

STEP 4. Check harness between B-31 (terminal No. 6) electronic-controlled throttle valve connector and D-218 (terminal No. 133) engine-A/T-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-31 (terminal No. 5) electronic-controlled throttle valve connector and D-218 (terminal No. 141) engine-A/T-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 the diagnosis code set?

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