NR Series ENGINE CONTROL SFI SYSTEM EVAP System
RELATED DTCS
| DTC No. | SAE | Monitoring Item | Link |
|---|---|---|---|
| P017100 | P0171 | Purge VSV stuck open* | ( 201906,999999,_51,_080777,_0393969,RM100000001I1RA,P017100)
|
| P043E00 | P043E | Reference orifice clogged (built into canister pump module) | (201906,999999,_51,_080777,_0393969,RM100000001I1WE,P043E00)
|
| P043F00 | P043F | Reference orifice high-flow (built into canister pump module) | |
| P04419C | P0441 | ·
Purge VSV (Vacuum Switching Valve) stuck closed ·
No. 1 check valve stuck closed ·
Purge flow |
(201906,999999,_51,_080777,_0393969,RM100000001I1WF,P04419C)
|
| P04502F | P0451 | Canister pressure sensor (built into canister pump module) signal noise | (201906,999999,_51,_080777,_0393969,RM100000001I1WG,P045011)
|
| P045011 | P0452 | Canister pressure sensor (built into canister pump module) voltage low | |
| P045015 | P0453 | Canister pressure sensor (built into canister pump module) voltage high | |
| P045500 | P0455 | EVAP gross leak | (201906,999999,_51,_080777,_0393969,RM100000001I1WH,P045500)
|
| P045600 | P0456 | EVAP small leak | |
| P148D7E | P148D | No. 1 check valve stuck open | (201906,999999,_51,_080777,_0393969,RM100000001I1WP,P148D7E)
|
| P24007E | P2402 | Leak detection pump stuck on (built into canister pump module) | (201906,999999,_51,_080777,_0393969,RM100000001I1WE,P043E00)
|
| P24007F | P2401 | Leak detection pump stuck off (built into canister pump module) | |
| P24187E | P2419 | Vent valve stuck closed (built into canister pump module) | |
| P24187F | P2420 | Vent valve stuck open (vent) (built into canister pump module) | (201906,999999,_51,_080777,_0393969,RM100000001I1WQ,P24187F)
|
| P261029 | P2610 | Soak timer (built into ECM) | (202304,999999,_51,_080777,_0393969,RM100000002C0QY,P261029)
|
| P261093 | P2610 |
*: If purge VSV is stuck open, air is sucked in from purge VSV, and the air fuel ratio becomes lean and stores P017100.
If any EVAP system DTCs are output, the malfunctioning area can be determined using the table below.
- NOTICE:
-
If the reference pressure difference between the first and second checks is more than the specification, all the DTCs relating to the reference pressure (P043E00, P043F00, P24007E, P24007F and P24187E) will all be stored.
DESCRIPTION
| *1 | Purge VSV | *2 | Fuel Vapor Feed Hose (EVAP Hose) (to Intake Manifold) |
| *3 | Fuel Vapor Feed Hose (EVAP Hose) (from Canister) | *4 | Canister Pump Module (No. 2 Charcoal Canister Sub-assembly)
- Canister Pressure Sensor - Leak Detection Pump - Vent Valve |
| *5 | Canister | *6 | Canister Filter |
| *7 | Air Inlet Port | *8 | Fuel Cap |
| *9 | Fuel Tank | *10 | No. 1 Check Valve |
| *a | Location of EVAP (Evaporative Emission) System | *b | Purge Line |
- HINT:
-
The canister pressure sensor, the leak detection pump and the vent valve are built into the canister pump module (No. 2 charcoal canister sub-assembly).
| *1 | Canister Pump Module | *2 | Intake Manifold |
| *3 | Purge VSV | *4 | Throttle Valve |
| *5 | Canister | *6 | Fuel Tank |
| *7 | Air Cleaner | *8 | ECM |
| *9 | Canister Filter | *10 | Soak Timer |
| *11 | Roll-Over Valve | *12 | Fuel Cap |
| *13 | No. 1 Check Valve | *14 | Cut-off Valve |
| *a | EVAP System Circuit | - | - |
| Component | Operation |
|---|---|
| Canister | Contains activated charcoal to absorb EVAP (Evaporative Emissions) generated in fuel tank. |
| Cut-off valve | Located in fuel tank. Valve floats and closes when fuel tank is 100% full. |
| Purge VSV (Vacuum Switching Valve) | Opens or closes line between canister and intake manifold. ECM uses purge VSV to control EVAP purge flow. In order to discharge EVAP absorbed by canister to intake manifold, ECM opens purge VSV. EVAP discharge volume to intake manifold controlled by purge VSV duty cycle (current-carrying time). (Open: on, Close: off) |
| Roll-over valve | Located in fuel tank. Valve closes by its own weight when vehicle overturns to prevent fuel from spilling out. |
| Soak timer | Built into ECM. To ensure accurate EVAP monitor, measures 5 hours (+/-15 min) after ignition switch is turned off. This allows fuel to cool down, stabilizing EVAP pressure. When approximately 5 hours elapsed, ECM activates (refer to fig. 3). |
| No. 1 Check Valve | Prevents intake air from flowing back toward the canister due to the turbo pressure. |
| Canister pump module | Consists of (a) to (d) below. Canister pump module cannot be disassembled. |
| (a) Vent valve | Vents and closes EVAP system. When ECM turns valve on, EVAP system is closed. When ECM turns valve off, EVAP system is vented. Negative pressure (vacuum) is created in EVAP system to check for EVAP leaks by closing purge VSV, turning on vent valve (closing it) and operating leak detection pump (refer to fig. 1). |
| (b) Canister pressure sensor | Indicates pressure as voltages. ECM supplies regulated 5 V to pressure sensor, and uses feedback from sensor to monitor EVAP system pressure (refer to fig. 2). |
| (c) Leak detection pump | Creates negative pressure (vacuum) in EVAP system for leak check. |
| (d) Reference orifice | Has opening with 0.02 inch diameter. Vacuum is produced through orifice by closing purge VSV, turning off vent valve and operating leak detection pump, to monitor reference pressure. Reference pressure is used when checking for small EVAP leaks. |
| *1 | Canister | *2 | Reference Orifice (0.02 Inch) |
| *3 | Canister Pressure Sensor | - | - |
| *a | Canister Pump Module (fig. 1) | *b | Airflow |
| *c | Condition: Purge Flow | *d | Condition: Leak Check |
| *e | Vent Valve: Off (Vent) | *f | to Canister Filter (Atmosphere) |
| *g | Leak Detection Pump: Off | *h | Vent Valve: On (Closed) |
| *i | Leak Detection Pump: On | - | - |
- NOTICE:
-
In the EVAP system of this vehicle, turning on the vent valve does not seal off the EVAP system. To check for leaks in the EVAP system, disconnect the air inlet vent hose and apply pressure from the atmospheric side of the canister.
While the engine is running, if a predetermined condition (closed-loop, etc.) is met, the purge VSV is opened by the ECM and fuel vapors stored in the canister are purged to the intake manifold. The ECM changes the duty cycle ratio of the purge VSV to control purge flow volume.
The purge flow volume is also determined by the intake manifold pressure. Atmospheric pressure is allowed into the canister through the vent valve to ensure that the purge flow is maintained when negative pressure (vacuum) is applied to the canister.
The No. 1 check valve is used between the purge VSV and intake port to prevent intake air from flowing back toward the canister due to the turbo pressure.
The following two monitors run to confirm appropriate EVAP system operation.
Key-off monitor
This monitor checks for EVAP (evaporative emission) system leaks and canister pump module malfunctions. The monitor starts 5 hours* after the ignition switch is turned off. At least 5 hours are required for the fuel to cool down to stabilize the EVAP pressure, thus making the EVAP system monitor more accurate.
The leak detection pump creates negative pressure (vacuum) in the EVAP system and the pressure is measured. Finally, the ECM monitors for leaks from the EVAP system, and malfunctions in both the canister pump module and purge VSV based on the EVAP pressure.
- HINT:
-
*: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the ignition switch is turned off, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the ignition switch is turned off, the monitor check starts 2.5 hours later.
Atmospheric pressure check:
In order to ensure reliable malfunction detection, the variation between the atmospheric pressures, before and after of the EVAP leak check, is measured by the ECM.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
Inspect the fuses for circuits related to this system before performing the following procedure.
·The GTS is required to conduct the following diagnostic troubleshooting procedure.
- HINT:
- ·
Using the GTS monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
·Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
CONFIRMATION DRIVING PATTERN
- HINT:
-
After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation described below.
KEY-OFF MONITOR CONFIRMATION
- NOTICE:
- ·
The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
·Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
·Do not run the engine during this operation.
·When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the fuel temperature less than 35°C (95°F).
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
After the "Evaporative System Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P043E00, P043F00, P04419C, P04502F, P045011, P045015, P045500, P045600, P148D7E, P24007E, P024007F, P24187E or P24187F.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
- HINT:
- ·
If the judgment result shows NORMAL, the system is normal.
·If the judgment result shows ABNORMAL, the system has a malfunction.
PROCEDURE
Turn the ignition switch off and wait for 10 seconds.
Turn the ignition switch to ON.
Turn the ignition switch off and wait for 10 seconds.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Confirm DTCs and Freeze Frame Data. If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below.
- Powertrain > Engine > Trouble Codes
- 50001 372
- NOTICE:
-
If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E00, P043F00, P24007E, P24007F and P24187E) are stored.
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC after recording the Freeze Frame Data and DTC.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
- NOTICE:
- ·
The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
·Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
·Do not run the engine in this operation.
·When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
- Powertrain > Engine > Utility
-
Tester Display Evaporative System Check - 50005 372 21
After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / 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.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC after recording the Freeze Frame Data and DTC.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
- NOTICE:
- ·
In the Evaporative System Check (Manual Mode), the series of 7 Evaporative System Check steps are performed manually using the GTS.
·Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
·Do not run the engine during this operation.
·When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode.
- Powertrain > Engine > Utility
-
Tester Display Evaporative System Check - 50005 372 21
- Result:
Proceed to NEXT
NEXT
Check the EVAP pressure in step 1/7.
- Result:
DTC*1 Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P04502F EVAP pressure fluctuates by +/-0.3 kPa (0.044 psi) or higher Canister pressure sensor signal noise B (P045011 or P045015)*2 ·EVAP pressure is below 42.11 kPa (6.11 psi), or higher than 123.761 kPa (17.95 psi)
·EVAP pressure deviates +/-10 kPa (1.45 psi) from actual atmosphere pressure *3
Canister pressure sensor or its circuit has malfunction C
*1: These DTCs are already present in the ECM 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 P045011 or P045015 is stored 0.5 seconds after the ignition switch is turned to ON.
- HINT:
-
*3: Canister pressure sensor standard output range is 70 to 110 kPa(abs) [10.15 to 15.95 psi(abs)]. This varies by weather.
A
B
C
Check the EVAP pressure in steps 1/7 and 2/7.
- Result:
DTC* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/7. Then decreases to reference pressure Not yet determined A P24007E Small difference between EVAP pressures during steps 1/7 and 2/7 Leak detection pump stuck ON B
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
- HINT:
-
The first reference pressure is the value determined in step 2/7.
A
B
- HINT:
-
Make a note of the pressures checked in inspection items (A) and (B) below.
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 1/7 finishes and step 2/7 starts.
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 and -1.068 kPa (-0.703 and -0.155 psi) Not yet determined A P043F00 and P24007F EVAP pressure in inspection item (B) is -1.068 kPa(gauge) (-0.155 psi(gauge)) or higher ·Reference orifice high-flow
·Leak detection pump stuck OFF
B P043E00 EVAP pressure in inspection item (B) is below -4.85 kPa(gauge) (-0.703 psi(gauge)) Reference orifice clogged C P24187E EVAP pressure in inspection item (A) is higher than -0.242 kPa(gauge) (-0.035 psi(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 ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
A
B
C
D
Check the EVAP pressure in step 3/7.
- Result:
DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa (0.044 psi) or higher within 10 seconds of proceeding from step 2/7 to step 3/7 Not yet determined A P24187F No variation in EVAP pressure even after proceeding from step 2/7 to step 3/7 ·Vent valve stuck open (vent)
·Canister (charcoal filter inside canister) clogged
B
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
A
B
Wait until the EVAP pressure change is less than 0.11 kPa (0.016 psi) for 60 seconds.
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.
- Result:
Proceed to NEXT
NEXT
Check the EVAP pressure in step 4/7.
- Result:
DTC* Result Suspected Trouble Area Proceed to - Variation in EVAP pressure is 2.20 kPa (0.319 psi) or less for 20 seconds, after proceeding from step 3/7 to step 4/7 Not yet determined A P148D7E EVAP pressure increases by higher than 2.20 kPa (0.319 psi) within 20 seconds of proceeding from step 3/7 to step 4/7 ·No. 1 check valve
·Problems in EVAP hose between No. 1 check valve and purge VSV
B
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
A
B
Check the EVAP pressure in step 5/7.
- Result:
DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa (0.044 psi) or higher within 10 seconds of proceeding from step 4/7 to step 5/7 Not yet determined A P24187E Variation in EVAP pressure is below 0.3 kPa (0.044 psi) for 10 seconds, after proceeding from step 4/7 to step 5/7 Vent valve stuck closed B
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
A
B
Check the EVAP pressure in step 6/7.
Compare the EVAP pressure in step 3/7 and the second reference pressure (step 6/7).
- Result:
DTC* Result Suspected Trouble Area Proceed to - EVAP pressure from step 3/7 lower than second reference pressure (step 6/7) Not yet determined (no leakage from EVAP system) A P045500 EVAP pressure from step 3/7 higher than [second reference pressure (step 6/7) x 0.2] EVAP gross leak B P045600 EVAP pressure from step 3/7 higher than second reference pressure (step 6/7) EVAP small leak
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
A
B
Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.
- Result:
Proceed to NEXT
NEXT
Check for leakages in the EVAP purge line between the purge VSV and canister.
- OK:
No leakages in the EVAP purge line between the purge VSV and canister.
- Result:
Proceed to OK NG
OK
NG
Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications.
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 tester.
Remove the fuel cap and install it onto a fuel cap adapter.
Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa(gauge) (0.464 to 0.537 psi(gauge)) using an EVAP tester pump.
Seal the adapter and wait for 2 minutes.
Check the pressure. If the pressure is 2 kPa(gauge) (0.29 psi(gauge)) or higher, 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 - No fuel cap - C
A
B
C
Disconnect the vent hose.
| *1 | Fuel Tank | *2 | Canister |
| *3 | Fuel Tank Inlet Pipe Sub-assembly (Canister Filter) | *4 | No. 2 Charcoal Canister Sub-assembly
·
Canister Pump Module |
| *5 | Fuel Cap | - | - |
| *a | Disconnect the vent hose | - | - |
Connect the EVAP pressure tester tool to the canister pump module with the adapter.
| *1 | Canister Pump Module | *2 | Adapter |
| *3 | EVAP Pressure Tester Tool | - | - |
Pressurize the EVAP system to 3.2 to 3.7 kPa(gauge) (24 to 27.75 mmHg(gauge)).
Apply soapy water to the piping and connecting parts of the EVAP system.
Look for areas where bubbles appear. This indicates the leak point.
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.
- Result:
Proceed to NEXT
NEXT
- HINT:
- ·
When reinstalling the fuel cap, tighten it firmly (only one click sound could be heard).
·When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly.
- Result:
Proceed to NEXT
NEXT
- HINT:
-
When installing the fuel cap, tighten it firmly (only one click sound could be heard).
- Result:
Proceed to NEXT
NEXT
- Result:
Proceed to NEXT
NEXT
Check the No. 1 check valve.
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to NEXT
NEXT
Replace the No. 1 check valve.
- Result:
Proceed to NEXT
NEXT
| *a | Front view of wire harness connector
(to Canister Pump Module) |
Turn the ignition switch off.
Disconnect the canister pump module connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Result:
Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to O133-5 (VLVB) - Body ground Ignition switch ON 11 to 14 V ·Wire harness or connector between vent valve and ECM
·Vent valve
·Canister (charcoal filter inside canister) clogged
·No. 2 charcoal canister filter (filter inside canister clogged)
·ECM
A Below 3 V ·Power source wire harness of vent valve
B
A
B
| *a | Component without harness connected
(Canister Pump Module) |
Turn the ignition switch off.
Disconnect the canister pump module connector.
Apply the battery voltage to terminals VLVB and VGND of the pump module.
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 ECM
·Canister (charcoal filter inside canister) clogged
·No. 2 charcoal canister filter (filter inside canister clogged)
·ECM
A Not operating ·Vent valve
B
A
B
Turn the ignition switch off.
Disconnect the ECM connector.
Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.
- Result:
Tester Connection Condition Test Result Suspected Trouble Area Proceed to A46-7 (VPMP) - O133-1 (VGND) Always Below 1 Ω ·Canister (charcoal filter inside canister) clogged
·ECM
A 10 kΩ or higher Wire harness or connector between ECM and canister pump module B
A
B
Check for filter blockage in the canister.
- OK:
No blockages in the canister.
- Result:
Proceed to OK NG
OK
NG
Replace the canister.
- 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 hose between the canister and the canister pump module; 2) the pipe between the air inlet port and the canister pump module; 3) the canister filter; and 4) the fuel tank vent hose.
·Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.
| *1 | Fuel Tank Vent Hose | *2 | Vent Hose |
| *3 | Air Inlet Port | *4 | Fuel Tank |
| *5 | No. 2 Charcoal Caniter Sub-assembly
·
Canister Pump Module |
*6 | Canister |
| *7 | Canister Filter | *8 | Fuel Cap |
| *a | Inspection Area
(check for disconnection and/or cracks) |
- | - |
- Result:
Proceed to NEXT
NEXT
Check the EVAP pressure in step 3/7.
- Result:
DTC* Result Suspected Trouble Area Proceed to P043F00 EVAP pressure less than [reference pressure] measured in step 2/7 Reference orifice high-flow A P24007F EVAP pressure almost same as [reference pressure] measured in step 2/7 Leak detection pump stuck off B
*: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
- HINT:
-
The first reference pressure is the value determined in step 2/7.
A
B
| *a | Front view of wire harness connector
(to Canister Pump Module) |
Turn the ignition switch off.
Disconnect the canister pump module connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Result:
Tester Connection Condition Test Result Suspected Trouble Area Proceed to O133-3 (MTRB) - Body ground Ignition switch ON 9 to 14 V ·Wire harness or connector between leak detection pump and body ground
·Leak detection pump
A Below 3 V ·Wire harness or connector between leak detection pump and ECM
·ECM
B
A
B
Turn the ignition switch off.
Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.
- Result:
Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to O133-4 (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
B
- Result:
Proceed to NEXT
NEXT
Turn the ignition switch off.
Disconnect the canister pump module connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition O133-3 (MTRB) - A46-20 (MPMP) Always Below 1 Ω O133-3 (MTRB) or A46-20 (MPMP) - Body ground and other terminals Always 10 kΩ or higher
- Result:
Result Suspected Trouble Area Proceed to OK ECM A NG Wire harness or connector between ECM and canister pump module B
A
B
- Result:
Proceed to NEXT
NEXT
Turn the ignition switch off.
| *a | Component without harness connected
(Canister Pump Module) |
Disconnect the canister pump module connector.
Apply the battery voltage to terminals VLVB and VGND of the pump module.
Touch the canister pump module to confirm the vent valve operation.
- Result:
Condition Test Result Suspected Trouble Area Proceed to Apply battery voltage to terminals VLVB and VGND Operating ·Wire harness or connector between vent valve and ECM
·Leak detection pump performance deteriorates
·Leak detection pump circuit malfunctioning (large resistance exists in the circuit)
·ECM
A Not operating Vent valve B
A
B
Turn the ignition switch off.
Disconnect the canister pump module connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition O133-1 (VGND) - A46-7 (VPMP) Always Below 1 Ω O133-1 (VGND) or A46-7 (VPMP) - Body ground and other terminals 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)
·ECM
A NG Wire harness or connector between ECM and canister pump module B
A
B
Disconnect the canister pump module connector.
Measure the resistance according to the value(s) in the table below.
- Result:
Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to O133-4 (MGND) - Body ground Always Below 1 Ω ·No. 2 charcoal canister sub-assembly
·Wire harness or connector between canister pump module and ECM
·ECM
A 10 kΩ or higher Wire harness or connector between canister pump module and body ground B
A
B
Disconnect the canister pump module connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Result:
Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to O133-3 (MTRB) - A46-20 (MPMP) Always Below 1 Ω ·No. 2 charcoal canister sub-assembly
·ECM
A 10 kΩ or higher Wire harness or connector between ECM and canister pump module B
A
B
Replace the canister pump module (No. 2 charcoal canister sub-assembly).
- NOTICE:
- ·
When replacing the canister pump module, check the canister pump module interior, canister 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 hose between the canister and the canister pump module; 2) the pipe between the air inlet port and the canister pump module; 3) the canister filter; and 4) the fuel tank vent hose. If liquids are present in the canister interior, replace canister and canister pump module together.
·Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace the canister and canister pump module together.
·Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter.
| *1 | Fuel Tank Vent Hose | *2 | Vent Hose |
| *3 | Air Inlet Port | *4 | Fuel Tank |
| *5 | No. 2 Charcoal Canister Sub-assembly
·
Canister Pump Module |
*6 | Canister |
| *7 | Canister Filter | *8 | Fuel Cap |
| *a | Inspection Area
(check for disconnection and/or cracks) |
- | - |
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC after recording the Freeze Frame Data and DTC.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
- NOTICE:
- ·
The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
·Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
·Do not run the engine in this step.
·When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
- Powertrain > Engine > Utility
-
Tester Display Evaporative System Check - 50005 372 21
After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to No DTCs output
(No pending DTCs output)A EVAP system DTCs are output B
A
B
Replace the canister pump module (No. 2 charcoal canister sub-assembly).
- NOTICE:
- ·
When replacing the canister pump module, check the canister pump module interior, canister 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 hose between the canister and the canister pump module; 2) the pipe between the air inlet port and the canister pump module; 3) the canister filter; and 4) the fuel tank vent hose. If liquids are present in the canister interior, replace the canister and canister pump module together.
·Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace the canister and canister pump module together.
·Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
| *1 | Fuel Tank Vent Hose | *2 | Vent Hose |
| *3 | Air Inlet Port | *4 | Fuel Tank |
| *5 | No. 2 Charcoal Canister Sub-assembly
·
Canister Pump Module |
*6 | Canister |
| *7 | Canister Filter | *8 | Fuel Cap |
| *a | Inspection Area
(check for disconnection and/or cracks) |
- | - |
- Result:
Proceed to NEXT
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC after recording the Freeze Frame Data and DTC.
- Powertrain > Engine > Clear DTCs
- 50002 372
Turn the ignition switch off and wait for at least 30 seconds.
- Result:
Proceed to NEXT
NEXT
- NOTICE:
- ·
The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
·Do not perform the Evaporative System Check when the fuel tank is higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
·Do not run the engine in this operation.
·When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F).
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
- Powertrain > Engine > Utility
-
Tester Display Evaporative System Check - 50005 372 21
After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes.
- Powertrain > Engine > Trouble Codes
- 50001 372
- HINT:
-
If no pending DTCs are found, the repair has been successfully completed.
- Result:
Proceed to NEXT
NEXT
Check the canister pressure sensor circuit, referring to DTC P045011 canister pressure sensor circuit procedure.
- Result:
Proceed to NEXT
NEXT