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 ).