EVAP System: Procedure

1. Turn the power switch off and wait for 10 seconds.
2. Turn the power switch on (IG).
3. Turn the power switch off and wait for 10 seconds.
4. Connect the Techstream to the DLC3.
5. Turn the power switch on (IG) and turn the Techstream on.
6. Enter the following menus: Powertrain/Engine and ECT/Trouble Codes.
7. Confirm DTCs and freeze frame data.

   If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below.

   Fig 1: View Of DTC Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear DTCs. Refer to DTC CHECK/CLEAR .
5. Enter the following menus: Powertrain/Engine and ECT/Utility/Evaporative System Check/Automatic Mode.
6. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain/Engine and ECT/Trouble Codes.

   HINT: 

   If no pending DTCs are displayed, perform the Confirmation Driving Pattern. After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal.

NEXT: Go to next step 

Fig 2: Identifying Evaporative System Check (Manual Mode) Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear DTCs. Refer to DTC CHECK/CLEAR .
5. Enter the following menus: Powertrain/Engine and ECT/Utility/Evaporative System Check/Manual Mode.

NEXT: Go to next step 

Fig 3: Identifying EVAP System Reference Chart (Step 1/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the EVAP pressure in step 1/6.
   RESULT
   
   

   DTC *1	Result	Suspected Trouble Area	Proceed to
   -	Virtually no variation in EVAP pressure	Not yet determined	A
   P0451	EVAP pressure fluctuates by +/-0.3 kPa (gauge) [2.25 mmHg (gauge)] or more	Canister pressure sensor signal noise	B
   (P0452 or P0453) *2	EVAP pressure is below 42.11 kPa (abs) [315.867 mmHg (abs)] or 123.761 kPa (abs) [928.331 mmHg (abs)] or more EVAP pressure deviates +/-10 kPa (gauge) [+/-75 mmHg (gauge)] from actual atmosphere pressure *3	Canister pressure sensor or its circuit has malfunction	C

   • *1: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
   • *2: If the canister pressure sensor circuit has an open or short, DTC P0452 or P0453 is stored 0.5 seconds after the power switch is turned to on (IG).

   HINT: 

   *3: Canister pressure sensor standard output range is 70 to 110 kPa(abs) [525 to 825 mmHg(abs)]. This varies by weather.

B → See step   38 

C → See step   12 

A: Go to next step 

Fig 4: EVAP System Reference Chart (Step 1/6 To 2/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the EVAP pressure in steps 1/6 and 2/6.
   RESULT
   
   

   DTC*	Result	Suspected Trouble Area	Proceed to
   -	Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure	Not yet determined	A
   P2402	Small difference between EVAP pressures during steps 1/6 and 2/6	Leak detection pump stuck ON	B

   *: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

   HINT: 

   The first reference pressure is the value determined in step 2/6.

B → See step   31 

A: Go to next step 

Fig 5: EVAP System Reference Chart (Step 2/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT: 

Make a note of the pressures checked in inspection items (A) and (B) below.

1. Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (A).

   *1: The leak detection pump begins to operate as step 1/6 finishes and step 2/6 starts.

2. Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (B).
   RESULT
   
   

   DTC*2	Result	Suspected Trouble Area	Proceed to
   -	EVAP pressure in inspection item (B) is between -4.85 kPa (gauge) and -1.057 kPa (gauge) [-36.38 mmHg (gauge) and -7.929 mmHg (gauge)]	Not yet determined	A
   P043F and P2401	EVAP pressure in inspection item (B) is -1.057 kPa (gauge) [-7.929 mmHg (gauge)] or more	Reference orifice high-flow Leak detection pump stuck OFF	B
   P043E	EVAP pressure in inspection item (B) is less than -4.85 kPa (gauge) [-36.38 mmHg (gauge)]	Reference orifice clogged	C
   P2419	EVAP pressure in inspection item (A) is more than -0.25 kPa (gauge) [-1.875 mmHg (gauge)]	Vent valve stuck closed Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit)	D

   *2: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

B → See step   11 

C → See step   38 

D → See step   13 

A: Go to next step 

Fig 6: Identifying EVAP System Reference Chart (Step 2/6 To 3/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the EVAP pressure in step 3/6.
   RESULT
   
   

   DTC*	Result	Suspected Trouble Area	Proceed to
   -	EVAP pressure increases by 0.3 kPa (gauge) [2.25 mmHg (gauge)] or more within 10 seconds of proceeding from step 2/6 to step 3/6	Not yet determined	A
   P2420	No variation in EVAP pressure even after proceeding from step 2/6 to step 3/6	Vent valve stuck open (vent) Canister (charcoal filter inside canister) clogged	B
   P0451	No variation in EVAP pressure during steps 1/6 through 3/6	Canister pressure sensor output value stuck Vent valve broken (valve split in two) Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit)	C

   *: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

B → See step   27 

C → See step   15 

A: Go to next step 

Fig 7: Identifying EVAP System Reference Chart (Step 3/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Wait until the EVAP pressure change is less than 0.12 kPa (gauge) [0.9 mmHg (gauge)] for 30 seconds.
2. Measure the EVAP pressure and record it.

   HINT: 

   A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes.

NEXT: Go to next step 

Fig 8: Identifying EVAP System Reference Chart (Step 4/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the EVAP pressure in step 4/6.
   RESULT
   
   

   DTC*1	Result	Suspected Trouble Area	Proceed to
   -	EVAP pressure increases by 0.3 kPa (gauge) [2.25 mmHg (gauge)] or more within 10 seconds of proceeding from step 3/6 to step 4/6	Not yet determined	A
   P0441 *2	EVAP pressure increases by 0.3 kPa (gauge) [2.25 mmHg (gauge)] or more within 10 seconds of proceeding from step 3/6 to step 4/6	Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV Hybrid vehicle control ECU	B
   P0441	Variation in EVAP pressure is less than 0.3 kPa (gauge) [2.25 mmHg (gauge)] for 10 seconds, after proceeding from step 3/6 to step 4/6	Purge VSV stuck closed Purge VSV circuit Canister (charcoal filter inside canister) clogged Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV Hybrid vehicle control ECU	C

   • *1: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
   • *2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test result were nearly borderline values.

B → See step   22 

C → See step   17 

A: Go to next step 

Fig 9: Identifying Evaporative System Check (Step 5/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the EVAP pressure in step 5/6.
2. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6).
   RESULT
   
   

   DTC*	Result	Suspected Trouble Area	Proceed to
   -	EVAP pressure from step 3/6 lower than second reference pressure (step 5/6)	Not yet determined (no leakage from EVAP system)	A
   P0441 and P0455	EVAP pressure from step 3/6 higher than [second reference pressure (step 5/6) x 0.2]	Purge VSV stuck open EVAP gross leak	B
   P0456	EVAP pressure from step 3/6 higher than second reference pressure (step 5/6)	EVAP small leak	B

   *: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

A → See step   43 

B → See step   17 

Fig 10: Identifying Evaporative System Check (Step 3/6)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the EVAP pressure in step 3/6.
   RESULT
   
   

   DTC*	Result	Suspected Trouble Area	Proceed to
   P043F	EVAP pressure less than [reference pressure] measured in step 2/6	Reference orifice high-flow	A
   P2401	EVAP pressure almost same as [reference pressure] measured in step 2/6	Leak detection pump stuck off	B

   *: These DTCs are already present in the hybrid vehicle control ECU when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

   HINT: 

   The first reference pressure is the value determined in step 2/6.

A → See step   38 

B → See step   31 

1. Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure. Refer to INSPECTION PROCEDURE .

NEXT → See step   48 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
   Fig 11: Identifying Canister Pump Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connector (Canister Pump Module)

3. Apply the battery voltage to terminals VLVB and VGND of the pump module.
4. Touch the canister pump module to confirm the vent valve operation.
   RESULT
   
   

   Condition	Tester Result	Suspected Trouble Area	Proceed to
   Apply battery voltage to terminals VLVB and VGND	Operating	Wire harness or connector between vent valve and hybrid vehicle control ECU Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) Hybrid vehicle control ECU	A
   	Not operating	Vent valve	B

B → See step   38 

A: Go to next step 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
3. Disconnect the hybrid vehicle control ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A58-45 (VPMP) - O2-1 (VGND)	Always	Below 1 Ω
   A58-45 (VPMP) or O2-1 (VGND) - Body ground	Always	10 kΩ or higher

   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   OK	Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) Hybrid vehicle control ECU	A
   NG	Wire harness or connector between hybrid vehicle control ECU and canister pump module	B

B → See step   40 

A: Go to next step 

1. Disconnect the canister pump module connector.
2. Measure the resistance according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   O2-4 (MGND) - Body ground	Always	Below 1 Ω	Canister pump module Wire harness or connector between canister pump module and hybrid vehicle control ECU hybrid vehicle control ECU	A
   		10 kΩ or higher	Wire harness or connector between canister pump module and body ground	B

B → See step   40 

A: Go to next step 

1. Disconnect the canister pump module connector.
2. Disconnect the hybrid vehicle control ECU connector.
3. Measure the resistance according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   A58-10 (MPMP) - O2-3 (MTRB)	Always	Below 1 Ω	Canister pump module Hybrid vehicle control ECU	A
   		10 kΩ or higher	Wire harness or connector between hybrid vehicle control ECU and canister pump module	B

A → See step   45 

B → See step   40 

1. Enter the following menus: Powertrain/Engine and ECT/Active Test/Activate the VSV for EVAP Control.
2. Disconnect the hose (connected to the canister) from the purge VSV.
   Fig 12: Active Test Using Techstream (Purge VSV & Hose (to Canister))

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Purge VSV
   *2	Hose (to Canister)

3. Start the engine.
4. Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF).
5. Use your finger to confirm that the purge VSV has no suction.
6. Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON).
7. Use your finger to confirm that the purge VSV has suction.
   RESULT
   
   

   Test Result	Suspected Trouble Area	Proceed to
   No suction when purge VSV turned off, and suction applied when turned on	Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged Hybrid vehicle control ECU	A
   	Leakage is considered (based on result of step 10): Fuel cap Leakage from EVAP line, fuel tank, or canister assembly	B
   Suction applied when purge VSV turned off	Purge VSV stuck open	C
   No suction when purge VSV turned on	Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold	D

B → See step   20 

C → See step   21 

D → See step   23 

A: Go to next step 

1. Check for blockages in the EVAP purge line between the purge VSV and canister.

   OK

   No blockages in the EVAP purge line between the purge VSV and canister.

NG → See step   44 

OK: Go to next step 

1. Check for filter blockage in the canister. Refer to INSPECTION .

   OK

   No blockages in the canister.

OK → See step   47 

NG → See step   38 

1. Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications.
2. Tighten the fuel cap firmly (only one click sound could be heard).

   HINT: 

   If an EVAP tester is available, check the fuel cap using the Techstream.

   1. Remove the fuel cap and install it onto a fuel cap adapter.
   2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa (gauge) [24 to 28 mmHg (gauge)] using an EVAP tester pump.
   3. Seal the adapter and wait for 2 minutes.
   4. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg (gauge)] or more, the fuel cap is normal.
      RESULT
      
      

      Test Result	Suspected Trouble Area	Proceed to
      Fuel cap correctly installed	-	A
      Fuel cap loose	Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications	B
      Defective fuel cap	-	B
      No fuel cap	-	C

A → See step   37 

B → See step   35 

C → See step   36 

1. Turn the power switch off.
2. Disconnect the purge VSV connector.
   Fig 13: Identifying Hose (To Canister), Connector & Purge VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Hose (to Canister)
   *2	Connector
   *3	Purge VSV

3. Disconnect the hose (connected to the canister) from the purge VSV.
4. Start the engine.
5. Use your finger to confirm that the purge VSV has no suction.
   RESULT
   
   

   Test Result	Suspected Trouble Area	Proceed to
   No suction	Wire harness or connector between purge VSV and hybrid vehicle control ECU (short to ground) Hybrid vehicle control ECU	A
   Suction applied	Purge VSV	B

A → See step   26 

B → See step   39 

1. Check for blockages in the EVAP purge line between the purge VSV and canister.

   OK

   No blockages in the EVAP purge line between the purge VSV and canister.

NG → See step   44 

OK: Go to next step 

1. Disconnect the hose (connected to the intake manifold) from the purge VSV.
   Fig 14: Identifying Purge VSV & Hose (To Intake Manifold)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Purge VSV
   *2	Hose (to intake manifold)

2. Start the engine.
3. Use your finger to confirm that the hose has suction.
   RESULT
   
   

   Test Result	Suspected Trouble Area	Proceed to
   Suction applied	EVAP hose between purge VSV and intake manifold normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and hybrid vehicle control ECU	A
   No suction	Intake manifold port EVAP hose between purge VSV and intake manifold	B

B → See step   34 

A: Go to next step 

1. Remove the purge VSV.
2. Apply battery voltage to the terminals of the purge VSV.
   Fig 15: Testing Purge VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1

   Purge VSV

3. Confirm that air flows from port E to port F.
   RESULT
   
   

   Test Result	Condition	Suspected Trouble Area	Proceed to
   Air flows	Battery voltage is applied to purge VSV terminals	Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and hybrid vehicle control ECU	A
   No air flow	Battery voltage is applied to purge VSV terminals	Purge VSV	B

B → See step   39 

A: Go to next step 

1. Disconnect the purge VSV connector.
2. Turn the power switch on (IG).
   Fig 16: Identifying To Harness & Connector (Purge VSV)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Purge VSV)

3. Measure the voltage according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Switch Condition	Specified Condition	Suspected Trouble Area	Proceed to
   C4-2 - Body ground	Power switch on (IG)	11 to 14 V	Purge VSV power source normal Wire harness or connector between purge VSV and hybrid vehicle control ECU	A
   		Other than result above	Wire harness or connectors between purge VSV and battery	B

B → See step   40 

A: Go to next step 

1. Disconnect the hybrid vehicle control ECU connector.
2. Disconnect the purge VSV connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C4-1 - C28-17 (PRG)	Always	Below 1 Ω
   C4-1 or C28-17 (PRG) - Body ground	Always	10 kΩ or higher

OK → See step   47 

NG → See step   40 

1. Turn the power switch off.
   Fig 17: Identifying O2 Canister Pump Module Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Canister Pump Module)

2. Disconnect the canister pump module connector.
3. Turn the power switch to on (IG).
4. Measure the voltage according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Switch Condition	Specified Condition	Suspected Trouble Area	Proceed to
   O2-5 (VLVB) - Body ground	Power switch on (IG)	11 to 14 V	Wire harness or connector between vent valve and hybrid vehicle control ECU Vent valve Canister (charcoal filter inside canister) clogged Hybrid vehicle control ECU	A
   		Below 3 V	Power source wire harness of vent valve	B

B → See step   40 

A: Go to next step 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
   Fig 18: Identifying Canister Pump Module

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connector (Canister Pump Module)

3. Apply the battery voltage to terminals VLVB and VGND of the pump module.
4. Touch the canister pump module to confirm the vent valve operation.
   RESULT
   
   

   Condition	Tester Result	Suspected Trouble Area	Proceed to
   Apply battery voltage to terminals VLVB and VGND	Operating	Wire harness or connector between vent valve and hybrid vehicle control ECU Canister (charcoal filter inside canister) clogged Hybrid vehicle control ECU	A
   	Not operating	Vent valve	B

B → See step   38 

A: Go to next step 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
3. Disconnect the hybrid vehicle control ECU connector.
4. Measure the resistance according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Condition	Test Result	Suspected Trouble Area	Proceed to
   A58-45 (VPMP) - O2-1 (VGND)	Always	Below 1 Ω	Canister (charcoal filter inside canister) clogged Hybrid vehicle control ECU	A
   		10 kΩ or higher	Wire harness or connector between hybrid vehicle control ECU and canister pump module	B

B → See step   40 

A: Go to next step 

1. Check for filter blockage in the canister. Refer to INSPECTION .

   OK

   No blockages in the canister.

OK → See step   47 

NG → See step   38 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
   Fig 19: Identifying O2 Canister Pump Module Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Canister Pump Module)

3. Turn the power switch to ON.
4. Enter the following menus: Powertrain/Engine and ECT/Active Test/Activate the Vacuum Pump.
5. Measure the voltage according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Condition	Test Result	Suspected Trouble Area	Proceed to
   O2-3 (MTRB) - Body ground	Leak detection pump on and off (Active Test ON and OFF)	Below 3 V when OFF 9 to 14 V when ON	Wire harness or connector between leak detection pump and body ground Leak detection pump	A
   		Below 3 V when OFF and ON	Wire harness or connector between leak detection pump and hybrid vehicle control ECU Hybrid vehicle control ECU	B
   		9 to 14 V when OFF and ON	Hybrid vehicle control ECU	C

B → See step   33 

C → See step   47 

A: Go to next step 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
3. Measure the resistance according to the value(s) in the table below.
   RESULT
   
   

   Tester Connection	Condition	Specified Condition	Suspected Trouble Area	Proceed to
   O2-4 (MGND) - Body ground	Always	Below 1 Ω	Leak detection pump	A
   		10 kΩ or higher	Wire harness or connector between canister pump module and body ground	B

A → See step   38 

B → See step   40 

1. Turn the power switch off.
2. Disconnect the canister pump module connector.
3. Disconnect the hybrid vehicle control ECU connector.
4. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A58-10 (MPMP) - O2-3 (MTRB)	Always	Below 1 Ω
   A58-10 (MPMP) or O2-3 (MTRB) - Body ground	Always	10 kΩ or higher

   RESULT
   
   

   Result	Suspected Trouble Area	Proceed to
   OK	Hybrid vehicle control ECU	A
   NG	Wire harness or connector between hybrid vehicle control ECU and canister pump module	B

A → See step   47 

B → See step   40 

1. Stop the engine.
2. Disconnect the EVAP hose from the intake manifold.
3. Start the engine.
4. Use your finger to confirm that the port of the intake manifold has suction.
   RESULT
   
   

   Tester Connection	Suspected Trouble Area	Proceed to
   Suction applied	EVAP hose between intake manifold and purge VSV	A
   No suction	Intake manifold	B

A → See step   41 

B → See step   42 

HINT: 

• When reinstalling the fuel cap, tighten it firmly (only one click sound could be head).
• When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly.

NEXT → See step   48 

HINT: 

When installing the fuel cap, tighten it firmly (only one click sound could be head).

NEXT → See step   48 

1. Disconnect the vent hose.
   Fig 20: Identifying Fuel Tank, Canister, Air Filter, Fuel Cap & Disconnect Vent Hose Here

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Fuel Tank
   *2	Canister
   *3	Canister Filter
   *4	Fuel Cap
   *5	Disconnect the vent hose here

2. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
   Fig 21: Identifying Canister Pump Module, Adapter & EVAP Pressure Tester Tool

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Canister Pump Module
   *2	Adapter
   *3	EVAP Pressure Tester Tool

3. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
4. Apply soapy water to the piping and connecting parts of the EVAP system.
5. Look for areas where bubbles appear. This indicates the leak point.
6. Repair or replace the leak point.

   HINT: 

   Disconnect the hose between the canister and fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks.

NEXT → See step   48 

1. Replace the canister. Refer to REMOVAL .
   NOTE:

   • 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.
   • Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.
   Fig 22: Identifying Fuel Tank Vent Hose, Air Inlet Port, Vent Hose, Fuel Tank, Canister Filter And Inspection Area

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Fuel Tank Vent Hose	*2	Air Inlet Port
   *3	Vent Hose	*4	Fuel Tank
   *5	Canister Filter	*6	Inspection Area (check for disconnection and/or cracks)

NEXT → See step   48 

1. Replace the purge VSV. Refer to REMOVAL .

NEXT → See step   48 

NEXT → See step   48 

NEXT → See step   48 

1. Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold. Refer to REMOVAL .

NEXT → See step   48 

1. Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.

NEXT → See step   48 

NEXT → See step   48 

1. Replace the canister. Refer to REMOVAL .
   NOTE:

   • 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.
   • Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.
   Fig 23: Identifying Fuel Tank Vent Hose, Air Inlet Port, Vent Hose, Fuel Tank, Canister Filter And Inspection Area

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1	Fuel Tank Vent Hose	*2	Air Inlet Port
   *3	Vent Hose	*4	Fuel Tank
   *5	Canister Filter	*6	Inspection Area (check for disconnection and/or cracks)

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs. Refer to DTC CHECK/CLEAR .
5. Enter the following menus: Powertrain/Engine and ECT/Utility/Evaporative System Check/Automatic Mode.
6. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain/Engine and ECT/Trouble Codes.

   Result	Proceed to
   EVAP system DTCs are output	A
   No DTCs output (No pending DTCs output)	B

B → END 

A: Go to next step 

1. Replace the hybrid vehicle control ECU. Refer to REMOVAL .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs. Refer to DTC CHECK/CLEAR .
5. Enter the following menus: Powertrain/Engine and ECT/Utility/Evaporative System Check/Automatic Mode.
6. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain/Engine and ECT/Trouble Codes.

   HINT: 

   If no pending DTCs are found, the repair has been successfully completed.

NEXT → END