Toyota RAV4 manuals

Toyota RAV4 Service Manual: Evaporative emission control system pressure sensor

Toyota RAV4 Service Manual / 2Az-fe engine mechanical / Sfi system / Diagnostic trouble code chart / Evaporative emission control system pressure sensor

Toyota RAV4. Evaporative emission control system pressure sensor


Dtc summary

Toyota RAV4. Dtc summary


Toyota RAV4. Dtc summary


Hint:

The canister pressure sensor is built into the canister pump module.

Description

The description can be found in the evap (evaporative emission) system (see page es-335).

Monitor description

Toyota RAV4. Monitor description


  1. Dtc p0450: canister pressure sensor abnormal fluctuation

If the canister pressure sensor output [pressure] rapidly fluctuates between less than 42.1 Kpa-a (315.9 Mmhg-a) and more than 123.8 Kpa-a (928.4 Mmhg-a), the ecm interprets this as an open or short circuit malfunction in the canister pressure sensor or its circuit, and stops the evap (evaporative emission) system monitor. The ecm then illuminates the mil and sets the dtc (1 trip detection logic).

  1. Dtc p0451: canister pressure sensor noise or fixed/flat

If the canister pressure sensor voltage output fluctuates rapidly for 10 seconds, the ecm stops the evap system monitor. The ecm interprets this as noise from the canister pressure sensor, and stops the evap system monitor. The ecm then illuminates the mil and sets the dtc.

Alternatively, if the sensor voltage output does not change for 10 seconds, the ecm interprets this as the sensor being fixed/flat, and stops the monitor. The ecm then illuminates the mil and sets the dtc.

(Both the malfunctions are detected by 2 trip detection logic).

  1. Dtc p0452: canister pressure sensor voltage low

If the canister pressure sensor output [pressure] is below 42.1 Kpa-a (315.9 Mmhg-a), the ecm interprets this as an open or short circuit malfunction in the canister pressure sensor or its circuit, and stops the evap system monitor. The ecm then illuminates the mil and sets the dtc (1 trip detection logic).

  1. Dtc p0453: canister pressure sensor voltage high

If the canister pressure sensor output [pressure] is 123.8 Kpa-a (928.4 Mmhg-a) or more, the ecm interprets this as an open or short circuit malfunction in the canister pressure sensor or its circuit, and stops the evap system monitor. The ecm then illuminates the mil and sets the dtc (1 trip detection logic).

Monitor strategy

Toyota RAV4. Monitor strategy


Typical enabling conditions

Toyota RAV4. Typical enabling conditions


Typical malfunction thresholds

Toyota RAV4. Typical malfunction thresholds


Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

Notice:

  1. Confirm dtc and evap pressure

  1. Connect the intelligent tester to the dlc3.
  2. Turn the ignition switch on (do not start the engine).
  3. Turn the tester on.
  4. Select the following menu items: diagnosis / enhanced obd ii / dtc info / current codes.
  5. Read dtcs.
  6. Select the following menu items: diagnosis / enhanced obd ii / data list / evap / evap vapor press.
  7. Read the evap (evaporative emission) pressure displayed on the tester.

Toyota RAV4. Confirm dtc and evap pressure




  1. Check harness and connector (canister pump module - ecm)

  1. Turn the ignition switch off.
  2. Disconnect the b30 ecm connector.
  3. Measure the resistance between ppmp terminal of the ecm connector and the body ground.

Toyota RAV4. Check harness and connector (canister pump module - ecm)


Toyota RAV4. Check harness and connector (canister pump module - ecm)


  1. Reconnect the ecm connector.



  1. Check harness and connector (canister pump module - ecm)

Toyota RAV4. Check harness and connector (canister pump module - ecm)


  1. Disconnect the s3 canister pump module connector.
  2. Disconnect the b30 ecm connector.
  3. Measure the resistance between ppmp terminal of the ecm connector and the body ground.

Toyota RAV4. Check harness and connector (canister pump module - ecm)


  1. Reconnect the canister pump module connector.
  2. Reconnect the ecm connector.

  1. Check harness and connector (canister pump module - ecm)

  1. Disconnect the s3 canister pump module connector.
  2. Turn the ignition switch on.
  3. Measure the voltage and resistance of the canister connector.

Standard


Toyota RAV4. Check harness and connector (canister pump module - ecm)


Toyota RAV4. Check harness and connector (canister pump module - ecm)


  1. Reconnect the canister pump module connector.

  1. Replace charcoal canister assembly

  1. Replace the canister assembly (see page ec-10).

Notice:

When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose.

Toyota RAV4. Replace charcoal canister assembly


Go to step 8


  1. Repair or replace harness or connector

Hint:

If the exhaust tailpipe has been removed, go to the next step before reinstalling it.

Go to step 8


  1. Replace ecm

  1. Replace the ecm (see page es-429).

Go to step 8


  1. Check whether dtc output recurs (after repair)

  1. Connect the intelligent tester to the dlc3.
  2. Turn the ignition switch on and turn the tester on.
  3. Wait for at least 60 seconds.
  4. On the tester, select the following menu items: diagnosis / enhanced obd ii / dtc info / pending codes.

Hint:

If no pending dtcs are displayed on the tester, the repair has been successfully completed.


Evaporative emission control system incorrect purge flow
Dtc summary Description The description can be found in the evap (evaporative emission) system (see page es-335). Inspection procedure Refer to the evap system (see page es-340). Monito ...

Evaporative emission control system leak detected
Dtc summary Description The description can be found in the evap (evaporative emission) system (see page es-335). Inspection procedure Refer to the evap system (see page es-340). Monito ...

Other materials:

Audio system
Operations such as listening to audio, using the hands-free phone, confirming vehicle information and changing audio system settings are started by using the following buttons. Audio system operation buttons “Audio” button Display the “select audio source” screen or audio top s ...

Brake pedal load sensing switch
Description The brake pedal load sensing switch is turned on when the brake pedal is depressed with force exceeding a predetermined level. The skid control ecu detects if the brake pedal is depressed or not via this circuit. Wiring diagram Inspection procedure Notice: When repla ...

Removal (2006/01- )
Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove air cleaner case sub-assembly (for 2az-fe) Remove the air clea ...

© 2011-2018 Copyright www.trav4.net