Code No. P2135: Throttle Position Sensor (main and sub) Range/Performance Problem


OPERATION



  • Check code No. P0122: throttle position sensor (main) circuit low input (Refer to ).
  • Check code No. P0222: throttle position sensor (sub) circuit low input (Refer to ).

FUNCTION



  • Engine-ECU checks the throttle position sensor output signal characteristics for abnormal conditions.

TROUBLE JUDGMENT


Check Conditions
  • Throttle position sensor (main) output voltage is more than 0.2 V and is less than 4.8 V.
  • Throttle position sensor (sub) output voltage is more than 0.2 V and is less than 4.8 V.
Judgement Criterion
  • The sum of the output voltage of the throttle position sensors (main and sub) is less than 4.5 V, or more than 5.5 V.
Check Conditions
  • Throttle position sensor (main) output voltage is more than 0.2 V and is less than 4.8 V.
  • Throttle position sensor (sub) output voltage is more than 0.2 V and is less than 4.8 V.
  • Ignition switch is "ON" position.
  • Throttle position sensor (main and sub) output voltage is less than the target throttle position sensor (main) voltage by 0.9 V or less.
Judgement Criterion
  • Voltage obtained with the formula given below is more than 0.3 V: throttle position sensor (main) voltage - throttle position sensor (sub) voltage
note The throttle position sensor voltage used for the judgment is converted into the throttle position sensor voltage for the internal processing by the engine-ECU.

FAIL-SAFE AND BACKUP FUNCTION



  • Throttle opening degree position is in default position.

PROBABLE CAUSES



  • Failed throttle position sensor
  • Harness damage in throttle position sensor circuit or loose connector contact

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. Perform resistance measurement at B-12 electronic-controlled throttle valve connector.

  • Disconnect connector, and measure at harness side.
  • Resistance between terminal No. 3 and earth.
OK: Continuity (2 Ω or less)

Q. Is the check result normal?
Go to Step 6 .
Go to Step 3 .

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. 3) electronic-controlled throttle valve connector and B-26 (terminal No. 13) engine-ECU connector.

  • Check earthing line for damage.

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

STEP 5. 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 ).

STEP 6. Connector check: B-26 engine-ECU connector

Q. Is the check result normal?
Go to Step 7 .
Repair or replace the connector

STEP 7. Check harness between B-12 (terminal No. 5) electronic-controlled throttle valve connector and B-26 (terminal No. 12) engine-ECU connector.

  • Check power supply line for damage.

Q. Is the check result normal?
Go to Step 8 .
Repair the damaged harness wire.

STEP 8. Check harness between B-12 (terminal No. 4) electronic-controlled throttle valve connector and B-26 (terminal No. 10) engine-ECU connector.

  • Check output line for damage.

Q. Is the check result normal?
Go to Step 9 .
Repair the damaged harness wire.

STEP 9. Check harness between B-12 (terminal No. 6) electronic-controlled throttle valve connector and B-26 (terminal No. 11) engine-ECU connector.

  • Check output line for damage.

Q. Is the check result normal?
Go to Step 10.
Repair the damaged harness wire.

STEP 10. Replace throttle body assembly.

  • After replacing the throttle body assembly, reconfirm whether the diagnosis code is set.

Q. Is the diagnosis code set?
Replace the engine-ECU.
Check end.