Engine Control (Sfi) System (Diagnostic Codes (P0420-U0296) & Circuit Tests): Other Lexus GS III рестайлинг

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

MONITOR RESULT

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

CONFIRMATION DRIVING PATTERN

HINT

Performing this confirmation pattern will activate the catalyst monitor. This is very useful for verifying the completion of a repair.

Scheme 115

1. (a) Connect the Techstream to the DLC3.
2. (b) Turn the power switch on (IG).
3. (c) Turn the Techstream on.
4. (d) Clear DTCs (if set). Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) .
5. (e) Enter the following menus: Powertrain / Engine and ECT / Monitor / Catalyst Efficiency / Status2.
6. (f) Check that Catalyst Efficiency is Incomplete.
7. (g) Start the engine and warm it up.
8. (h) Drive the vehicle at between 40 mph and 70 mph (64 km/h and 113 km/h) for at least 10 minutes.
9. (i) Note the state of the Readiness Tests items. Those items will change to Complete as Catalyst Efficiency monitor operates.
10. (j) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending and check if any DTCs (any pending DTCs) are set.

HINT

If Catalyst Efficiency does not change to Complete, and any pending DTCs fail to set, extend the driving time.

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

KEY-OFF MONITOR

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

PURGE FLOW MONITOR

PURGE VSV STUCK OPEN

PURGE VSV STUCK OPEN AND CLOSED

PURGE FLOW

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

P0451 (NOISE MONITOR)

P0451 (STUCK MONITOR)

P0450, P0452 AND P0453

1. P0450: PRESSURE SENSOR CHATTERING

2. P0451: PRESSURE SENSOR NOISE

3. P0451: PRESSURE SENSOR STUCK

4. P0452: PRESSURE SENSOR LOW VOLTAGE

5. P0453: PRESSURE SENSOR HIGH VOLTAGE

Scheme 116

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following the menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to P0505 A P0505 and other DTCs B HINT: If any DTCs other than P0505 are output, troubleshoot those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. CHECK VENTILATION HOSE (HOSE CONNECTIONS) OK Ventilation hose is connected correctly and is not damaged. NG --> REPAIR OR REPLACE VENTILATION HOSE OK: Go to next step
3. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
4. CHECK THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> REPLACE THROTTLE BODY ASSEMBLY OK --> REPLACE ECM

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050A) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P050A A P050A and other DTCs B HINT: If any DTCs other than P050A are output, troubleshoot those DTCs first. B --> See step 16 A: Go to next step
2. READ VALUE USING TECHSTREAM (FUEL TRIM) HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. Connect the Techstream to the DLC3. Put the engine in inspection mode. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2. Read the values displayed on the Techstream at engine idles. Add together the Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values to obtain the total Fuel Trim. OK Total of Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values is between -20% and 20%. Result Result Proceed to NG A OK B B --> See step 12 A: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Put the engine in inspection mode. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2). Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Tester Operation Specified Condition OCV OFF Normal engine speed OCV ON Engine idles roughly or stalls (soon after OCV switched from OFF to ON) NG --> See step 8 OK: Go to next step
4. CHECK PCV HOSE CONNECTIONS OK PCV hose is connected correctly and is not damaged. NG --> See step 9 OK: Go to next step
5. CHECK INTAKE SYSTEM Check the intake system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION»(ref-387080-S40450673382011022400000) . OK No leakage from intake system. NG --> See step 10 OK: Go to next step
6. CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Visually check that the air cleaner filter element is not excessively contaminated with dirt or oil. OK Air cleaner filter element is not excessively contaminated with dirt or oil. NG --> See step 11 OK: Go to next step
7. REPLACE MASS AIR FLOW METER Replace the mass air flow meter. Refer to «REMOVAL»(ref-387086-S18043175332011022400000) . NEXT --> See step 15
8. CHECK AND REPAIR VVT SYSTEM NEXT --> See step 15
9. REPAIR OR REPLACE PCV HOSE NEXT --> See step 15
10. REPAIR OR REPLACE INTAKE SYSTEM NEXT --> See step 15
11. REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY NEXT --> See step 15
12. CHECK THROTTLE VALVE Check for deposits around the throttle valve and throttle valve condition. OK No deposits around throttle valve and throttle valve moves smoothly. NG --> See step 14 OK: Go to next step
13. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-387086-S06388950852011022400000) . NEXT --> See step 15
14. REPAIR OR REPLACE THROTTLE BODY ASSEMBLY NEXT --> See step 15
15. CHECK WHETHER DTC OUTPUT RECURS (DTC P050A) NOTE: In this operation, the engine must be cold (the same level as the engine coolant temperature recorded in the freeze frame data). Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Switch the ECM from normal mode to check mode using the Techstream. Refer to «CHECK MODE PROCEDURE»(ref-387083-S01377880472011022400000) . Start the engine to idle for a minute. OK Stable fast idling. Read the DTCs. OK No DTC output. NEXT --> END
16. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S04418315412011022400000)

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050B) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the tester on. Enter the following the menus: Powertrain / Engine / Trouble Code. Read the DTCs. Result Display (DTC Output) Proceed to P050B A P050B and other DTCs B HINT: If any DTCs other than P050B are output, troubleshoot those DTCs first. B --> See step 16 A: Go to next step
2. READ VALUE USING TECHSTREAM (FUEL TRIM) HINT: Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter. Connect the Techstream to the DLC3. Start the engine. Turn the tester on. Enter the following menus: Powertrain / Engine / Data List / Short FT #1 and Long FT #1, or Short FT#2 and Long FT#2. Read the values displayed on the tester at engine idles. Add together the Short FT #1 and Long FT #1, or Short FT#2 and Long FT#2 values to obtain the total FUEL TRIM. OK Total of Short FT #1 and Long FT #1, or Short FT#2 and Long FT#2 values is between -20% and 20%. Result Result Proceed to NG A OK B B --> See step 12 A: Go to next step
3. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 1). Check the engine speed while operating the Oil Control Valve (OCV) using the tester. OK Tester Operation Specified Condition OCV OFF Normal engine speed OCV ON Engine idles roughly or stalls (soon after OCV switched from OFF to ON) NG --> See step 8 OK: Go to next step
4. CHECK PCV HOSE CONNECTIONS Inspect the PCV hose connections. OK PCV hose is connected correctly and is not damaged. NG --> See step 9 OK: Go to next step
5. CHECK INTAKE SYSTEM Check the intake system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION»(ref-387080-S40450673382011022400000) . OK No leakage from intake system. NG --> See step 10 OK: Go to next step
6. CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Visually check that the air cleaner filter element is not excessively contaminated with dirt or oil. OK Air cleaner filter element is not excessively contaminated with dirt or oil. NG --> See step 11 OK: Go to next step
7. REPLACE MASS AIR FLOW METER Replace mass air flow meter. Refer to «REMOVAL»(ref-387086-S18043175332011022400000) . NEXT --> See step 15
8. CHECK AND REPAIR VVT SYSTEM Check and repair VVT system. NEXT --> See step 15
9. REPAIR OR REPLACE PCV HOSE Repair or replace PCV hose. NEXT --> See step 15
10. REPAIR OR REPLACE INTAKE SYSTEM Repair or replace intake system. NEXT --> See step 15
11. REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Replace the air cleaner filter element sub-assembly. NEXT --> See step 15
12. CHECK THROTTLE VALVE Check for deposits around the throttle valve and throttle valve condition. OK No deposits around throttle valve and throttle valve moves smoothly. NG --> See step 14 OK: Go to next step
13. REPLACE ECM Replace ECM. Refer to «REMOVAL»(ref-387086-S06388950852011022400000) . NEXT --> See step 15
14. REPAIR OR REPLACE THROTTLE BODY ASSEMBLY Repair or replace the throttle body assembly. NEXT --> See step 15
15. CHECK WHETHER DTC OUTPUT RECURS (DTC P050B) NOTE: In this operation, the engine must be cold (the same level as the engine coolant temperature recorded in the freeze frame data). Connect the Techstream to the DLC3. Turn the ignition switch on (IG). Turn the tester on. Clear the DTCs. Switch the ECM from normal mode to check mode using the tester. Start the engine to idle for a minute. OK Stable fast idling. Read the DTCs. OK No DTC output. NEXT --> END
16. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S04418315412011022400000)

Scheme 117

ECM RAM ERRORS

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0604) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Read the DTCs. Result Display (DTC Output) Proceed to P0604 A No output B B --> See step 2 A --> See step 3
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-387083-S29102060562011022400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-387086-S06388950852011022400000)

Scheme 118

1. CHECK ANY OTHER DTCS OUTPUT Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0606 and P0136, P0137, P0138, P0156, P0157 or P0158 are output A DTC P0606 is output B B --> See step 3 A: Go to next step
2. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158) Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flow chart. HINT: If P0136 or P0156 is output, troubleshoot for that DTC first. Refer to «INSPECTION PROCEDURE»(ref-387087-S00842397942011022400000) . Then proceed to "INSPECT ECM". See 6 . If P0137or P0157 is output, troubleshoot for that DTC first. Refer to «INSPECTION PROCEDURE»(ref-387087-S00842397942011022400000) . Then proceed to "INSPECT ECM". See 6 . If P0138 or P0158 is output, troubleshoot for that DTC first. Refer to «INSPECTION PROCEDURE»(ref-387087-S00842397942011022400000) . Then proceed to "INSPECT ECM". See 6 . If DTC P0606 and P0136, P0137, P0138, P0156, P0157 or P0158 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or more). NEXT --> See step 6
3. CHECK FOR EXHAUST GAS LEAK Allow the engine to idle and rev the engine. Check for exhaust gas leaks around the heated oxygen sensor. If any exhaust gas leaks are present, repair it and proceed to "PERFORM CONFIRMATION DRIVING PATTERN". If no exhaust gas leaks are present, proceed to "PERFORM CONFIRMATION DRIVING PATTERN" below. HINT: If no exhaust gas leaks are present, a malfunction in the heated oxygen sensor circuit is suspected. If any exhaust gas leaks are present around the heated oxygen sensor, noise appears in the output voltage of the heated oxygen sensor. NEXT: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine until the engine coolant temperature becomes 75° (167°F) or more. Perform the driving pattern. Accelerate the vehicle to 50 mph (80 km/h) and stop the vehicle. Drive the vehicle between 38 and 50 mph (60 and 80 km/h) for 5 minutes. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0606 and P0136, P0137, P0138, P0156, P0157 or P0158 are output A DTC P0606 is output B DTC is not output C C --> See step 6 B --> See step 7 A: Go to next step
5. INSPECT DTC (P0136, P0137, P0138, P0156, P0157 OR P0158) Inspect the P0136, P0137, P0138, P0156, P0157 or P0158 flow chart. HINT: If P0136 or P0156 is output, troubleshoot for that DTC first. Refer to «INSPECTION PROCEDURE»(ref-387087-S00842397942011022400000) . Then proceed to "INSPECT ECM". See 6 . If P0137or P0157 is output, troubleshoot for that DTC first. Refer to «INSPECTION PROCEDURE»(ref-387087-S00842397942011022400000) . Then proceed to "INSPECT ECM". See 6 . If P0138 or P0158 is output, troubleshoot for that DTC first. Refer to «INSPECTION PROCEDURE»(ref-387087-S00842397942011022400000) . Then proceed to "INSPECT ECM". See 6 . If DTC P0606 and P0136, P0137, P0138, P0156, P0157 or P0158 are output, the output voltage of the heated oxygen sensor may remain close to 0 V or become high (around 1 V or more). NEXT: Go to next step
6. INSPECT ECM Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Stop the engine and wait for 30 minutes. Connect the Techstream to the DLC3. Start the engine and allow it to idle for 2 minutes. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC P0606 is output B B --> See step 7 A --> END
7. REPLACE ECM. Refer to «REMOVAL»(ref-387086-S06388950852011022400000)

1. CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0607) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTC. Turn the power switch off. Disconnect the battery negative terminal and wait for 1 minute. Connect the battery negative terminal. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Trouble Code. Read the DTCs. Result Display (DTC output) Proceed to P0607 A No output DTC B B --> See step 2 A --> See step 3
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-387083-S29102060562011022400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-387086-S06388950852011022400000)

1. CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0657) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTC. Turn the power switch off. Disconnect the battery negative terminal and wait for 1 minute. Connect the battery negative terminal. Turn the power switch on (IG) for 10 seconds. Turn the power switch off. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to P0657 A No output DTC B B --> See step 2 A --> See step 3
2. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-387083-S29102060562011022400000)
3. REPLACE ECM. Refer to «REMOVAL»(ref-387086-S06388950852011022400000)

Scheme 119

Scheme 120

Scheme 121

Scheme 122

Scheme 123

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1276, P1277, P1278, P1279, P127A OR P127B) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to P1276, P1277, P1278, P1279, P127A or P127B A P1276, P1277, P1278, P1279, P127A or P127B and other DTCs B B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. CHECK INJECTOR CONNECTOR TERMINAL VOLTAGE Disconnect the fuel injector for port injection connector. Turn the power switch on (IG). Measure the voltage between the terminal of the fuel injector connector and body ground. Standard voltage Tester Connection Specified Condition E79-1 - Body ground 10 to 14 V u1-1 - Body ground 10 to 14 V E80-1 - Body ground 10 to 14 V u2-1 - Body ground 10 to 14 V E81-1 - Body ground 10 to 14 V u3-1 - Body ground 10 to 14 V NG --> CHECK AND REPAIR HARNESS OR CONNECTOR (IG2 FUSE - INJECTOR FOR PORT INJECTION) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - FUEL INJECTOR FOR PORT INJECTION) Disconnect the ECM connector. Disconnect the fuel injector connector. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition Fuel injector (E79-2) - #1P (E83-45) Below 1 ohms Fuel injector (u1-2) - #2P (E83-44) Below 1 ohms Fuel injector (E80-2) - #3P (E83-85) Below 1 ohms Fuel injector (u2-2) - #4P (E83-84) Below 1 ohms Fuel injector (E81-2) - #5P (E83-83) Below 1 ohms Fuel injector (u3-2) - #6P (E83-82) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition Fuel injector (E79-2) or #1P (E83-45) - Body ground 10 kohms or higher Fuel injector (u1-2) or #2P (E83-44) - Body ground 10 kohms or higher Fuel injector (E80-2) or #3P (E83-85) - body ground 10 kohms or higher Fuel injector (u2-2) or #4P (E83-84) - Body ground 10 kohms or higher Fuel injector (E81-2) or #5P (E83-83) - body ground 10 kohms or higher Fuel injector (u3-2) or #6P (E83-82) - body ground 10 kohms or higher Reconnect the fuel injector connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK FUEL INJECTOR FOR PORT INJECTION (RESISTANCE) Check the fuel injector for port injection resistance. Refer to «INSPECTION»(ref-387088-S00490758782011022400000) . NG --> REPLACE FUEL INJECTOR FOR PORT INJECTION OK: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P1276, P1277, P1278, P1279, P127A OR P127B) Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to No DTC A P1276, P1277, P1278, P1279, P127A or P127B B B --> REPLACE ECM A --> CHECK FOR INTERMITTENT PROBLEMS

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

P1420: EVAP SMALL LEAK

P1421: EVAP GROSS LEAK

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

P1423: FUEL TANK GROSS LEAK

P1422: FUEL TANK SMALL LEAK

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

P1451 (NOISE MONITOR)

P1451 (STUCK MONITOR)

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

P1452 AND P1453

1. P1451: PRESSURE SENSOR NOISE

2. P1451: PRESSURE SENSOR STUCK

3. P1452: PRESSURE SENSOR LOW VOLTAGE

5. P1453: PRESSURE SENSOR HIGH VOLTAGE

ALL

P2102

P2103

P2102

P2103

FAIL-SAFE

When either of these DTCs, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

Scheme 124

ALL

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

P2111 (THROTTLE ACTUATOR STUCK OPEN)

P2112 (THROTTLE ACTUATOR STUCK CLOSED)

When either of these DTCs, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 or P2112) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P2111 or P2112 A P2111 or P2112 and other DTCs B HINT: If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly. OK Throttle valve is not contaminated with foreign objects and moves smoothly. NG --> REPLACE THROTTLE BODY ASSEMBLY OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. WARNING: Exercise extreme care and take precautions at procedure "A" and "B" below. Failure to do so may result in the vehicle unexpectedly rolling away. Securely apply the parking brake and move the shift lever to the D position (Procedure "A"). While depressing the brake pedal securely, and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve) (Procedure "B"). Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to No DTC A P2111 or P2112 B B --> REPLACE ECM A --> CHECK FOR INTERMITTENT PROBLEMS

COMPONENT OPERATING RANGE

When this DTC, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, are set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

Scheme 125

When this DTC, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P2119 A P2119 and other DTCs B HINT: If any DTCs other than P2119 are output, troubleshoot those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Allow the engine to idle for 15 seconds. WARNING: Exercise extreme care and take precautions at procedure "A" and "B" below. Failure to do so may result in the vehicle unexpectedly rolling away. Securely apply the parking brake and move the shift lever to the D position (Procedure "A"). While depressing the brake pedal securely, fully depress the accelerator pedal for 5 seconds (Procedure "B"). Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. HINT: The output voltage of the throttle position sensor can be checked during procedure "B" using the Techstream. Variations in the output voltage indicate that the throttle actuator is in operation. To check the output voltage using the Techstream, enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1. OK No DTC output. NG --> REPLACE THROTTLE BODY ASSEMBLY OK --> END

SENSOR VOLTAGE DETECTION MONITOR

SENSOR CURRENT DETECTION MONITOR

SENSOR VOLTAGE DETECTION MONITOR (LEAN SIDE MALFUNCTION P2195, P2197)

SENSOR VOLTAGE DETECTION MONITOR (RICH SIDE MALFUNCTION P2196, P2198)

SENSOR CURRENT DETECTION MONITOR (HIGH SIDE MALFUNCTION P2195, P2197)

SENSOR CURRENT DETECTION MONITOR (LOW SIDE MALFUNCTION P2196, P2198)

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Scheme 126

This confirmation driving pattern is used in the "PERFORM CONFIRMATION DRIVING PATTERN" procedure of the following diagnostic troubleshooting procedure.

Scheme 127

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (READY).
3. Turn the Techstream on.
4. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) .
5. Warm up the engine until the engine coolant temperature reaches 75°C (167°F) or higher.
6. Drive the vehicle at between 38 mph (60 km/h) and 75 mph (120 km/h) for 10 minutes or more.
7. Repeat the following drive pattern 3 times or more: Drive the vehicle at 75 mph (120 km/h). Release the accelerator pedal and stop the vehicle.
8. Check the pending DTC.

ALL

A/F SENSOR - OPEN CIRCUIT BETWEEN A1A+ AND A1A-/A2A+ AND A2A- P2237 AND P2240

A/F SENSOR - LOW ADMITTANCE P2238 AND P2241

OTHER

A/F SENSOR OPEN CIRCUIT BETWEEN A1A+ AND A1A-/A2A+ AND A2A- P2237 AND P2240

A/F SENSOR SHORT CIRCUIT BETWEEN A1A+ AND A1A-/A2A+ AND A2A- P2238 AND P2241

A/F SENSOR SHORT CIRCUIT BETWEEN A1A+ AND GND/A2A+ AND GND P2238 AND P2241

A/F SENSOR ADMITTANCE LOW P2238 AND P2241

A/F SENSOR SHORT CIRCUIT BETWEEN A1A+ AND +B/A2A+ AND +B P2239 AND P2242

A/F SENSOR SHORT CIRCUIT BETWEEN A1A- AND GND/A2A- AND GND P2252 AND P2255

A/F SENSOR SHORT CIRCUIT BETWEEN A1A- AND +B/A2A- AND +B P2253 AND P2256

1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE). Refer to «PROCEDURE - Step 1»(ref-387087-S33503654812011022400000) NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
2. INSPECT INTEGRATION NO. 1 RELAY (A/F RELAY). Refer to «PROCEDURE - Step 3»(ref-387087-S33503654812011022400000) NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM). Refer to «PROCEDURE - Step 5»(ref-387087-S33503654812011022400000) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE AIR FUEL RATIO SENSOR NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Allow the engine to idle for 5 minutes or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read pending DTCs. Result Display (DTC Output) Proceed to No output A P2238, P2241, P2239, P2242, P2252, P2255, P2253 or P2256 B B --> REPLACE ECM A --> END

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

VENT VALVE STUCK OPEN (VENT)

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Key-off monitor sequence 1 to 15

1. ATMOSPHERIC PRESSURE MEASUREMENT

2. FIRST REFERENCE PRESSURE MEASUREMENT

3. VENT VALVE CLOSE STUCK CHECK

4. VACUUM INTRODUCTION FOR CANISTER

5. PURGE VSV STUCK CLOSED CHECK

6. SECOND REFERENCE PRESSURE MEASUREMENT

7. CANISTER LEAK CHECK

8. FUEL TANK CLOSED VALVE (TCV) STUCK CLOSED CHECK

9. VACUUM INTRODUCTION FOR FUEL TANK

10. TCV STUCK CLOSED CHECK

11. FUEL TANK PRESSURE SENSOR STUCK CHECK

12 THIRD REFERENCE PRESSURE MEASUREMENT

13. FUEL TANK LEAK CHECK

14. FUEL TANK PRESSURE SENSOR STUCK CHECK

15. ATMOSPHERIC PRESSURE MEASUREMENT

1. P2450: Fuel vapor-containment valve stuck open One of the following conditions is met 1 or 2 1. Fuel tank pressure change when vacuum introduction for canister More than 0.5 kPa (3.75 mmHg) 2. Canister pressure when vacuum introduction for canister was complete Higher than reference pressure x 0.2
2. P2451: Fuel vapor-containment valve stuck close One of the following conditions is met: 1 or 2 1. Both of the following conditions are met (a) or (b) (a) Fuel tank pressure -2 to 3 kPa (-15 to 22.5 mmHg) (b) Fuel tank pressure change when vacuum introduced for fuel tank Less than 0.5 kPa (3.75 mmHg) 2. Both of the following conditions are met (a) or (b) (a) Fuel tank pressure -2 kPa (-15 mmHg) or less, or 3 kPa (22.5 mmHg) or more (b) Canister pressure when change when TCV is open Less than 0.9 kPa (6.75 mmHg)

Refer to the CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

ALL

CASE 1

CASE 2

CASE 3

CASE 1

CASE 2

CASE 3

1. REPLACE ECM Replace the ECM. Refer to «REMOVAL - Step 7»(ref-387086-S06499058262011022400000) . NEXT: Go to next step
2. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Start the engine and wait for 10 minutes or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. If no pending DTC is displayed, the repair has been successfully completed. NEXT --> END

HINT

Performing this confirmation pattern will activate the A/F sensor response monitor.

Scheme 128

1. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) .
2. Connect the Techstream to the DLC3.
3. Turn the Techstream on.
4. Clear DTCs (if set).
5. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details.
6. Check that RES RATE B1S1 and B2S1 are Fail.
7. Warm up the engine (Procedure "A").
8. Drive the vehicle at between 37 mph and 75 mph (60 km/h and 120 km/h) for 5 minutes. However, the vehicle should be driven at a constant speed (Procedure "B").
9. Check the monitor result values on the Techstream by entering the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details / RES RATE B1S1 and RES RATE B2S1.
10. If the values indicated on the tester do not change, perform READINESS MONITOR DRIVE PATTERN for the A/F sensor and the heated oxygen sensor. Refer to «READINESS MONITOR DRIVE PATTERN»(ref-387083-S04516920072011022400000) . HINT: Completion of all A/F sensor monitors is required to change the value in Test Result.
11. Note the value of the Monitor Result.
12. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
13. Check if any DTCs (any pending DTCs) are set.

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2A00 AND/OR P2A03) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P2A00 and/or P2A03 A P2A00 and/or P2A03 and other DTCs B HINT: If any DTCs other than P2A00 and/or P2A03 are output, troubleshoot those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE). Refer to «PROCEDURE - Step 1»(ref-387087-S33503654812011022400000) NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM). Refer to «PROCEDURE - Step 5»(ref-387087-S33503654812011022400000) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00 AND/OR P2A03) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs using the Techstream. Result Display (DTC Output) Proceed to P2A00 and/or P2A03 A No output B B --> CHECK FOR INTERMITTENT PROBLEMS A: Go to next step
6. REPLACE AIR FUEL RATIO SENSOR NEXT: Go to next step
7. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P2A00 AND/OR P2A03) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs using the Techstream. Result Display (DTC Output) Proceed to No output A P2A00 and/or P2A03 B B --> REPLACE ECM A --> END

CASE1: P3190

CASE2: P3191

CASE3: P3193

1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U0001) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to U0001 A U0001 and other DTCs B B --> GO TO RELEVANT DTC CHART A --> REPLACE ECM

RELATED DTCS

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

1. KEY-OFF MONITOR DRIVE PATTERN Connect the Techstream to the DLC3. Confirm the following conditions are satisfied: The fuel level is less than 90%. The altitude is less than 8000 ft. (2400 m). The vehicle is stopped (the vehicle speed is less than 2 mph). The ECT is 4.4 to 35°C (40 to 95°F). The IAT is 4.4 to 35°C (40 to 95°F). Perform the drive pattern: Allow the engine to idle for 5 minutes or more. Turn the power switch off and wait 6 hours. Check the monitor status with the Techstream.
2. PURGE FLOW MONITOR DRIVE PATTERN (P0441) Connect the Techstream to the DLC3. Confirm that the following conditions are satisfied: The Engine Coolant Temperature (ECT) is more than 4.4°C (40°F). The Intake Air Temperature (IAT) is more than 4.4°C (40°F). Perform the drive pattern: Remove and reinstall the fuel cap to release the fuel tank pressure. Warm the engine until the ECT reaches 75°C (167°F) or more. Run the engine at 2500 rpm once. Allow the engine to idle and turn on the air conditioning (A/C) for 1 minute. Check the monitor status with the Techstream.

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

Scheme 134

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

Scheme 140

Scheme 141

Scheme 142

Scheme 143

Scheme 144

Scheme 145

Scheme 146

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Scheme 151

Scheme 152

1. CONFIRM DTC Turn the power switch off and wait 10 seconds. Turn the power switch on (IG). Turn the power switch off and wait 10 seconds. Connect the Techstream to the DLC3. Turn the power switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Confirm the DTCs. DTC AND MALFUNCTION CROSS-REFERENCE DTC Suspected Malfunction P043E, P043F, P2401, P2402 and P2419 Reference orifice low flow Reference orifice high flow Leak detection pump OFF stuck Leak detection pump ON stuck Vent valve ON (close) stuck P2420 Vent valve OFF (vent) stuck P0441 Purge VSV close stuck P0441 and P1421 Gross leak from canister Purge VSV open stuck P1420 Small leak from canister P1422 Small leak from fuel tank P1423 Gross leak from fuel tank P1423 and P2450 FVCV open stuck P2451 FVCV close stuck NEXT: Go to next step
2. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) NOTE: In the Evaporative System Check (Automatic Mode), a series of 6 Evaporative System Check steps are performed automatically. A maximum of 15 minutes is required. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed and the leak check of the fuel tank is unavailable. Do not run the engine. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F). Clear the DTC with the Techstream. Remove the fuel tank cap and reinstall the fuel cap. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check the DTC. Result DTC Conclusion Proceed to Set A malfunction occurs and troubleshooting can be performed A Not set No malfunctions occur and it is difficult to perform troubleshooting B DTC is not set and any of the current DTCs (P1422, P1423, or P2450) is set DTCs have set because of the fuel cap loosening C C --> END B --> See step 34 A: Go to next step
3. IDENTIFICATION OF TROUBLE AREAS USING DTC Refer to the table below to determine the next procedure according to the output DTCs. RESULT: DTC Suspected Malfunction Proceed to P0441, P1420, P1421, P1422, P1423, P2450 and/or P2451 Purge VSV open stuck Purge VSV close stuck Gross leak from canister Small leak from canister Gross leak from fuel tank Small leak from fuel tank FVCV open stuck FVCV close stuck A P043E, P043F, P2401, P2402, P2419 and/or P2420 Reference orifice low flow Reference orifice high flow Leak detection pump OFF stuck Leak detection pump ON stuck Vent valve ON (close) stuck Vent valve OFF (vent) stuck B B --> See step 11 A: Go to next step
4. IDENTIFICATION OF TROUBLE AREAS USING DTC Refer to the table below to determine the next procedure according to the output DTCs. RESULT: DTC Suspected Malfunction Proceed to P0441 Purge VSV close stuck A P0441 and P1421 Gross leak from canister Purge VSV open stuck B P1420 Small leak from canister P1422 Small leak from fuel tank C P1423 Gross leak from fuel tank P1423 and P2450 FVCV open stuck D P2451 FVCV close stuck D --> See step 23 C --> See step 21 B --> See step 18 A: Go to next step
5. CHECK VACUUM HOSE (PURGE VSV - INTAKE MANIFOLD) Disconnect the hose (to intake manifold) from the Purge VSV. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Use your finger and confirm that the Purge VSV has suction. Result Result Proceed to There is suction. Conclusion: EVAP hose between Purge VSV and intake manifold is normal. OK There is no suction. Conclusion: Problem in intake manifold or hose between Purge VSV and intake manifold NG NG --> See step 33 OK: Go to next step
6. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Disconnect the hose (to canister) from the Purge VSV. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Evap Control. Turn the Purge VSV off (Purge VSV: OFF). Use your finger and confirm that the Purge VSV has no suction. Turn the Purge VSV on (Purge VSV: ON). Use your finger to confirm that the purge VSV has suction. OK Purge VSV functions normally OK --> See step 33 NG: Go to next step
7. CHECK PURGE VSV Remove the purge VSV. Apply compressed air to the purge VSV, confirm that no air flows from A to B as shown in the illustration. Apply battery voltage to the purge VSV. While applying compressed air, confirm that air flows from A to B as shown in the illustration. Result Result Proceed to Air flows from A to B. Conclusion: purge VSV is normal. OK No air flows from A to B. Conclusion: purge VSV is malfunctioning. NG NG --> See step 27 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (PURGE VSV - EFI NO. 2 FUSE) Disconnect the E18 purge VSV connector. Turn the power switch on (IG). Measure the voltage between terminal 1 of the E18 connector and the body ground. Result Result Proceed to 11 to 14 V Conclusion: No problem exists on power source's wires. OK Except above Conclusion: Problem in wire or connector between purge VSV and ECM. NG NG --> See step 32 OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the E83 ECM connector and the E18 purge VSV connector. Measure the resistance. Standard resistance Tester Connection Specified Condition PRG (E83-81) - E18-2 10 ohms or less PRG (E83-81) - Body ground 10 kohms or more E18-2 - Body ground 10 kohms or more NG --> See step 32 OK: Go to next step
10. REPLACE ECM NEXT --> PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)
11. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP) Connect the Techstream to DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump. Turn the leak detection pump on with the Techstream. Touch the canister pump module and check if the pump is moving. OK Pump operates NG --> See step 13 OK: Go to next step
12. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR VENT VALVE) Remove the canister lower cover. Connect the Techstream to DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve. Touch the canister pump module, use the Techstream to turn the vent valve on and off, and check if the vent valve is moving. OK Vent valve vibration can be felt. NG --> See step 16 OK --> See step 28
13. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP) Turn the power switch off. Remove the canister lower cover. Disconnect the canister pump module connector. Connect the Techstream to DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump. Turn the leak detection pump on with the Techstream. Measure the voltage between MTRB terminal 1 of the canister pump module connector and body ground when the leak detection pump is turned on and off using the Techstream. Standard voltage 10 to 14 V NG --> See step 15 OK: Go to next step
14. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Remove the canister lower cover. Disconnect the canister pump module connector. Measure the resistance between MGND terminal of the canister pump module and the body ground. Standard resistance Below 1 ohms NG --> See step 32 OK --> See step 28
15. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Disconnect the A53 ECM connector. Disconnect the canister pump module connector. Measure the resistance between MPMP terminal of the ECM connector and MTRB terminal of the canister pump module connector. Standard resistance: W/O ACTIVE STABILIZER Tester Connection Specified Condition MPMP (A53-16) - MTRB (V17-1) 10 ohms or less MPMP (A53-16) or MTRB (V17-1) - Body ground 10 kohms or more W/ ACTIVE STABILIZER Tester Connection Specified Condition MPMP (A53-16) - MTRB (x1-1) 10 ohms or less MPMP (A53-16) or MTRB (x1-1) - Body ground 10 kohms or more NG --> See step 32 OK --> See step 26
16. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the power switch off. Remove the canister lower cover. Disconnect the canister pump module connector. Apply battery voltage to VLVB and VGND terminals of the canister pump module. Touch the canister pump module to confirm the vent valve operation. Result Test Results Suspected Trouble Areas Proceed to Operating 1. Wire harness between vent valve and ECM 2. ECM A Not operating Vent valve B Reconnect the canister connector. B --> See step 28 A: Go to next step
17. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the A53 ECM connector. Disconnect the canister pump module connector. Check the resistance between VPMP terminal of the ECM connector and VGND terminal of the canister pump module connector. Standard resistance: W/O ACTIVE STABILIZER Tester Connection Specified Condition VPMP (A53-17) - VGND (V17-8) 10 ohms or less VPMP (A53-17) or VGND (V17-8) - Body ground 10 kohms or more W/ ACTIVE STABILIZER Tester Connection Specified Condition VPMP (A53-17) - VGND (x1-8) 10 ohms or less VPMP (A53-17) or VGND (x1-8) - Body ground 10 kohms or more Reconnect the ECM connector. Reconnect the canister pump module connector. NG --> See step 32 OK --> See step 26
18. LOCATE EVAP LEAK PART (PURGE VSV - CANISTER) Disconnect the vent hose. Connect the EVAP tester to the vent hose with the adapter. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg). 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 the 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: Go to next step
19. REPLACE MALFUNCTIONING PART NEXT --> PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)
20. CHECK FUEL TANK CAP ASSEMBLY Check if the fuel cap is tightened until a few "click" sounds are heard. If you have the EVAP tester, check the fuel cap using the fuel cap adaptor. Install the fuel cap to the fuel cap adaptor, and connect the hose from the EVAP tester's pump. Pressurize the fuel cap adaptor to between 24 and 28 mmHg or for 45 seconds. Stop the pump and seal the fuel cap adaptor. Wait 2 minutes. Confirm that the pressure is higher than 15 mmHg. OK Higher than 15 mmHg NG --> See step 31 OK: Go to next step
21. LOCATE EVAP LEAK PART (FUEL VAPOR-CONTAINMENT VALVE - FUEL TANK) Disconnect the vent hose. Connect the EVAP tester to the vent hose with the adapter. Connect the Techstream to DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Vapor-Containment Valve. Turn the Fuel vapor-containment valve on with the tester. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg). 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 the 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: Go to next step
22. REPLACE MALFUNCTIONING PART NEXT --> PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)
23. CHECK FUEL VAPOR-CONTAINMENT VALVE ASSEMBLY (POWER SOURCE CIRCUIT) Disconnect the eV1 wire harness to wire harness connector. Connect the Techstream to the DLC3. Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Fuel Vapor-Containment Valve. Turn the fuel vapor-containment valve on with the Techstream. Measure the voltage between terminals 5 and 6 of the eV1 connector. Standard voltage 10 to 14 V OK --> See step 29 NG: Go to next step
24. CHECK HARNESS AND CONNECTOR (FUEL VAPOR-CONTAINMENT VALVE - EFI NO. 2 FUSE) Disconnect the eV1 wire harness to wire harness connector. Measure the voltage between terminal eV1-6 and the body ground. Standard voltage 10 to 14 V NG --> See step 32 OK: Go to next step
25. CHECK HARNESS AND CONNECTOR (FUEL VAPOR-CONTAINMENT VALVE ASSEMBLY - ECM) Disconnect the A53 ECM connector. Disconnect the eV1 wire harness to wire harness connector. Measure the resistance. Standard resistance Tester Connection Specified Condition CCV2 (A53-50) - eV1-5 10 ohms or less CCV2 (A53-50) or eV1-5 - Body ground 10 kohms or more NG --> See step 32 OK: Go to next step
26. REPLACE ECM NEXT --> PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
27. REPLACE PURGE VSV NEXT --> PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
28. REPLACE CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(ref-387090-S36738945712011022400000) . 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 hose from the canister to the fuel tank. NEXT --> PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)
29. CHECK HARNESS AND CONNECTOR (TANK WIRE HARNESS) Remove the fuel tank assembly. Refer to «REMOVAL»(ref-387088-S26476603842011022400000) . Disconnect the fuel vapor-containment valve connector. Measure the resistance. Standard resistance Tester Connection Specified Condition eV1-5 - e2-1 (CCV) Below 1 ohms eV1-6 - e2-2 (+B) Below 1 ohms Reinstall fuel tank assembly. Refer to «INSTALLATION»(ref-387088-S07233946762011022400000) . NG --> See step 32 OK: Go to next step
30. REPLACE FUEL VAPOR-CONTAINMENT VALVE NEXT --> PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
31. REPLACE FUEL TANK CAP NEXT --> PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
32. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> PERFORM EVAP SYSTEM CHECK AGAIN (AUTO OPERATION)
33. REPAIR OR REPLACE VACUUM HOSE NEXT --> PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)
34. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE) HINT: In the manual operation check, the EVAP system can be checked in signal steps. Valve operation and pressure in each step can also be checked. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Remove the fuel tank cap and reinstall the fuel cap. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode. NOTE: In the Evaporative System Check (AUTOMATIC MODE), the series of 9 Evaporative System Check steps is performed automatically. It takes a maximum of approximately 18 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 leak check of the fuel tank unavailable. Do not run the engine in this step. When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). TESTER DISPLAY Display Detail Atm Press Check The number of steps and step names are displayed PURGE VSV Purge VSV condition is displayed: ON (Open) / OFF (Closed) VENT VALVE Vent valve condition is displayed: ON (Closed) / OFF (Vent) LEAK DETECTION PUMP Leak detection pump condition is displayed: ON / OFF FVCV Fuel vapor-containment valve condition is displayed: ON (Open) / OFF (Closed) TANK PRESS Fuel tank pressure (Gauge pressure) VAPOR PRESS EVAP pressure (Gauge pressure) VAPOR PRESS EVAP pressure (Absolute pressure) Time (Step) Elapsed time for each step Time (VSV) Accumulated purge VSV open time Time (PUMP) Accumulated leak detection pump operating time MANUAL OPERATION STEP Step Operation 1. Atm Press Check 1 Atmospheric pressure measurement 2. Ref Press Check 1 First reference pressure measurement 3. Leak Check EVAP system pressure measurement 4. Purge VSV Check Purge VSV monitor 5. Ref Press Check 2 Second Reference pressure measurement 6. Resetting Resetting 7. Tank Leak Check Fuel tank pressure measurement 8. Ref Press Check 3 Third Reference pressure measurement Timing Chart NEXT: Go to next step
35. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION STEP 1) Select the step 1 and wait 10 seconds. NEXT: Go to next step
36. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE) (a) Perform step 2. (b) Check the EVAP pressure 2 seconds after the leak detection pump is activated*. *: The leak detection pump begins to operate at the start of step 2. (c) Check the EVAP pressure again when it has stabilized. This pressure is the first reference pressure standard. Result Test Result Suspected Trouble Area Proceed to EVAP pressure in step (b) is between 723.6 mmHg-a and 752 mmHg-a Not yet determined A EVAP pressure in step (b) is 752 mmHg-a or more Reference orifice high-flow Leak detection pump stuck OFF B EVAP pressure in step (b) is below 723.6 mmHg-a Reference orifice clogged C C --> See step 28 B --> See step 11 A --> See step 37
37. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE STEP 3) (a) Perform step 3. (b) Check the EVAP pressure change in step 3. Result Test Result Suspected Trouble Area Proceed to EVAP pressure change in step (b) is 762 mmHg-a or more Not yet determined A EVAP pressure in step (b) is below 762 mmHg-a Vent valve stuck OFF B (c) Check the fuel tank pressure change in step 3. Result Test Result Suspected Trouble Area Proceed to Fuel tank pressure in step (b) is below 763.7 mmHg-a Not yet determined A Fuel tank pressure change in step (b) is 763.7 mmHg-a or more Fuel vapor-containment valve (FVCV) ON (open) stuck C (d) Check the EVAP pressure again when it has stabilized. This pressure is the canister leak pressure standard. (e) Compare the first reference pressure with the canister leak pressure. Result Test Result Suspected Trouble Area Proceed to Lower than first reference pressure Not yet determined A First reference pressure or higher Purge VSV open stuck Leakage from line between Purge VSV and canister D D --> See step 18 C --> See step 23 B --> See step 16 A: Go to next step
38. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE STEP 4) (a) Perform step 4. (b) Check the EVAP pressure change in step 4. Result Test Result Suspected Trouble Area Proceed to EVAP pressure change in step (b) is 762 mmHg-a or more Not yet determined A EVAP pressure in step (b) is below 762 mmHg-a Purge VSV close stuck B B --> See step 5 A: Go to next step
39. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE STEP 5) Perform step 5 and wait 60 seconds. Check the EVAP pressure. This pressure is the second reference pressure standard. NEXT: Go to next step
40. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE STEP 6) Perform step 6 and wait 5 seconds. NEXT: Go to next step
41. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE STEP 7) Perform step 7. Check that the tank pressure and EVAP pressure change. Check the tank pressure again when it has stabilized. This pressure is the fuel tank leak pressure standard. Result Test Result Suspected Trouble Area Proceed to Tank pressure change is more than 766.7 mmHg-a and EVAP pressure is more than 752.5 mmHg-a Not yet determined A Tank pressure change is less than 766.7 mmHg-a and EVAP pressure is less than 752.5 mmHg-a Fuel vapor-containment valve (FVCV) OFF (close) stuck B B --> See step 23 A: Go to next step
42. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE STEP 8) Perform step 8 and wait 60 seconds. Check the EVAP pressure. This pressure is the third reference pressure standard. Compare the tank pressure checked in step 8 with the third reference pressure. Result Test Result Suspected Trouble Area Proceed to Lower than third reference pressure Not yet determined A Third reference pressure or higher Leakage from line between fuel vapor-containment valve and fuel tank B B --> See step 20 A: Go to next step
43. PERFORM CONFIRMATION DRIVING PATTERN KEY-OFF MONITOR DRIVE PATTERN Connect the Techstream to the DLC3. Confirm the following conditions are satisfied: The fuel level is less than 90%. The altitude is less than 8000 ft. (2400 m). The vehicle is stopped (the vehicle speed is less than 2 mph). The ECT is 4.4 to 35°C (40 to 95°F.) The IAT is 4.4 to 35°C (40 to 95°F). Driven vehicle in the city area or on free-way for 10 minutes or more. Perform the drive pattern: Allow the engine to idle for 5 minutes or more. Turn the power switch off and wait 6 hours. Check the monitor status with the Techstream. PURGE FLOW MONITOR DRIVE PATTERN (P0441) Connect the Techstream to the DLC3. Confirm that the following conditions are satisfied: The Engine Coolant Temperature (ECT) is more than 4.4°C (40°F). The Intake Air Temperature (IAT) is more than 4.4°C (40°F). Perform the drive pattern: Remove and reinstall the fuel cap to release the fuel tank pressure. Warm up the engine until the ECT reaches 75°C (167°F) or more. Driven vehicle in the city area or on free-way for 10 minutes or more. Check the monitor status with the Techstream. NEXT --> PERFORM EVAPORATIVE SYSTEM CHECK AGAIN (AUTOMATIC MODE)