Part 2
1GR-FE ENGINE CONTROL: SFI SYSTEM: EVAP System
- EVAP System - (Continued)
17. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV)
(a) Disconnect the purge VSV connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Result
Text in Illustration
(d) Reconnect the purge VSV connector.
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
(a) Disconnect the ECM connector and purge VSV connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Reconnect the purge VSV connector.
(d) Reconnect the ECM connector.
OK -- REPLACE ECM
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Result
Text in Illustration
(e) Reconnect the canister pump module connector.
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
A -- Continue to next step.
20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Apply battery voltage to terminals VLVB and VGND of the canister pump module.
(d) Touch the canister pump module to confirm the vent valve operation.
Result
Text in Illustration
(e) Reconnect the canister pump module connector.
B -- REPLACE CANISTER ASSEMBLY
A -- Continue to next step.
21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)
(a) Disconnect the ECM connector.
(b) Disconnect the canister pump module connector.
(c) Measure the resistance according to the value(s) in the table below.
Result
(d) Reconnect the ECM connector.
(e) Reconnect the canister pump module connector.
A -- REPLACE ECM
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
22. PERFORM ACTIVE TEST USING TECHSTREAM (VACUUM PUMP (ALONE))
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Turn the ignition switch to ON.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
(e) Measure the voltage according to the value(s) in the table below.
Result
Text in Illustration
B -- CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)
C -- REPLACE ECM
A -- Continue to next step.
23. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Measure the resistance according to the value(s) in the table below.
Result
(d) Reconnect the canister pump module connector.
A -- REPLACE CANISTER ASSEMBLY
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
24. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE)
(a) Turn the ignition switch off.
(b) Disconnect the canister pump module connector.
(c) Disconnect the ECM connector.
(d) Measure the resistance according to the value(s) in the table below.
Result
(e) Reconnect the canister pump module connector.
(f) Reconnect the ECM connector.
A -- REPLACE ECM
B -- REPAIR OR REPLACE HARNESS OR CONNECTOR
25. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
(a) Stop the engine.
(b) Disconnect the EVAP hose from the intake manifold.
(c) Start the engine.
(d) Use your finger to confirm that the port of the intake manifold has suction.
Result
(e) Reconnect the EVAP hose.
A -- REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV)
B -- INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
26. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY
HINT
* When reinstalling the fuel tank cap assembly, tighten it until a few click sounds are heard.
* When replacing the fuel tank cap assembly, use a fuel tank cap assembly that meets OEM specifications, and tighten it until a few click sounds are heard.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
27. REPLACE FUEL TANK CAP ASSEMBLY
HINT
* When installing the fuel tank cap assembly, tighten it until a few click sounds are heard.
* When replacing the fuel tank cap assembly, use a fuel tank cap assembly that meets OEM specifications.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
28. LOCATE EVAP LEAK PART
Text in Illustration
(a) Disconnect the vent hose.
(b) Connect an EVAP tester to the canister pump module with an adapter.
(c) Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
(d) Apply soapy water to the piping and connecting parts of the EVAP system.
(e) Look for areas where bubbles appear. This indicates the leak point.
(f) 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. This way, the fuel tank can be excluded as an area suspected of causing fuel leaks.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
29. REPLACE CANISTER ASSEMBLY
(a) Replace the canister assembly Removal.
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.
Text in Illustration
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
30. REPLACE PURGE VSV
(a) Disconnect the connector and hoses from the purge VSV.
Text in Illustration
(b) Remove the purge VSV.
(c) Install a new purge VSV.
(d) Reconnect the connector and hoses.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
31. REPAIR OR REPLACE HARNESS OR CONNECTOR
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
32. REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV)
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
33. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT)
(a) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
34. REPLACE ECM
(a) Replace the ECM Removal.
NEXT -- PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
35. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS
(a) Repair the malfunctioning areas indicated by the DTCs that were confirmed when the vehicle was brought in.
NEXT -- Continue to next step.
36. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION)
NOTICE:
* The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 23 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 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).
(a) Clear DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
(c) After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Code / Pending.
HINT
If no pending DTCs are output, the repair has been successfully completed.
NEXT -- COMPLETED
CONFIRMATION DRIVING PATTERN
HINT
After a repair, check Monitor Status by performing the Key-Off Monitor Confirmation and Purge Flow Monitor Confirmation described below.
1. KEY-OFF MONITOR CONFIRMATION
(a) Preconditions
The monitor will not run unless:
* The vehicle has been driven for 10 minutes or more (in a city area or on a freeway).
* The fuel tank is less than 90% full.
* The elevation is less than 8000 ft (2400 m).
* The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F).
* The intake air temperature is between 4.4°C and 35°C (40°F and 95°F).
* The vehicle remains stationary (the vehicle speed is 0 km/h [0 mph]).
(b) Monitor Conditions
(1) Allow the engine to idle for at least 5 minutes.
(2) Turn the ignition switch off and wait for 6 hours (or 8 or 10.5 hours).
HINT
Do not start the engine until checking Monitor Status. If the engine is started, the steps described above must be repeated.
(c) Monitor Status
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON and turn the Techstream on.
(3) Enter the following menus: Powertrain / Engine and ECT / Monitor.
(4) Check the Monitor Status displayed on the Techstream.
HINT
If INCMP is displayed, the monitor is not complete. Make sure that the preconditions have been met, and then perform the operations listed under Monitor Conditions again.
2. PURGE FLOW MONITOR CONFIRMATION (P0441)
HINT
Perform this monitor confirmation after the Key-Off Monitor Confirmation shows complete.
(a) Preconditions
The monitor will not run unless:
* The vehicle has been driven for 10 minutes or more (in a city area or on a freeway).
* The engine coolant temperature is between 4.4°C and 35°C (40°F and 95°F).
* The intake air temperature is between 4.4°C and 35°C (40°F and 95°F).
(b) Monitor Conditions
(1) Release the pressure from the fuel tank by removing and reinstalling the fuel tank cap assembly.
(2) Warm the engine up until the engine coolant temperature reaches a temperature higher than 75°C (167°F).
(3) Increase the engine speed to 3000 rpm once.
(4) Allow the engine to idle and turn the A/C on for 1 minute.
(c) Monitor Status
(1) Turn the ignition switch off (if ON or if the engine is running).
(2) Connect the Techstream to the DLC3.
(3) Turn the ignition switch to ON and turn the Techstream on.
(4) Enter the following menus: Powertrain / Engine and ECT / Monitor.
(5) Check the Monitor Status displayed on the Techstream.
HINT
If INCMP is displayed, the monitor is not complete. Make sure that the preconditions have been met, and perform the operation listed under Monitor Conditions again.
MONITOR RESULT
Refer to Checking Monitor Status Mode 6 Data.