Code No. P2100: Throttle Valve Control Servo Circuit (open)




OPERATION




FUNCTION




TROUBLE JUDGEMENT


Check Conditions
Judgement Criterion
or


FAIL-SAFE AND BACKUP FUNCTION




PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. Check throttle valve control servo itself.



  • Electronic-controlled throttle valve connector 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. Perform resistance measurement at engine-ECU connector.



  • Disconnect connector, and measure at harness side.
  • Resistance between terminal RSG, RSH and body earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?

Go to Step 3.

    Repair or replace the connector, or check and repair harness between engine-ECU connector terminal RSG, RSH and body earth.

    • Check earthing line for open circuit and damage.

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



  • Check output line for open 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. Check harness between electronic-controlled throttle valve connector terminal and engine-ECU connector terminal ETV-.



  • Check signal line for open circuit and damage.

Q. Is the check result normal?

Go to Step 5.
Repair or replace the connector, or repair the damaged harness wire.

STEP 5. M.U.T-III diagnosis code



  • Reconfirmation of diagnosis code.

Q. Is diagnosis code stored?

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