Code No. P2135: Throttle Position Sensor (Main and Sub) Range/Performance Problem






OPERATION



  • Refer to Code No. P0122: Throttle Position Sensor (main) Circuit Low Input .
  • Refer to Code No. P0222: Throttle Position Sensor (sub) Circuit Low Input .

FUNCTION



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

TROUBLE JUDGMENT


Check Conditions
  • Ignition switch is "ON" position.
  • 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.

PROBABLE CAUSES



  • Failed throttle position sensor
  • Short circuit in throttle position sensor circuit or loose connector contact

DIAGNOSIS PROCEDURE

STEP 1. Connector check: B-29 engine-ECU connector and B-20 electronic-controlled throttle valve connector

Q. Are the check results normal?
Go to Step 2 .
Repair or replace the connector.

STEP 2. Check harness between B-20 (terminal No. 4) electronic-controlled throttle valve connector and B-29 (terminal No. 10) engine-ECU connector.

  • Check output line for short circuit.

Q. Is the check result normal?
Go to Step 3 .
Repair the damaged harness wire.

STEP 3. Check harness between B-20 (terminal No. 6) electronic-controlled throttle valve connector and B-29 (terminal No. 11) engine-ECU connector.

  • Check output line for short circuit.

Q. Is the check result normal?
Go to Step 4 .
Repair the damaged harness wire.

STEP 4. Replace throttle body assembly.

  • After throttle body assembly is replaced, re-check for trouble symptom.

Q. Does trouble system persist?
Replace the engine-ECU.
Check end.