Engine Control System (Diagnostic Codes (P219A - U0101) & Circuit Tests): Diagnosis Lexus RX III рестайлинг

INSPECTION PROCEDURE

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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.
2. Refer to A/F Sensor Determination (worst value) #1, A/F Sensor Determination (worst value) #2, Engine Speed Fluctuation Avg (worst value) #1 to #6, Cylinder #1 to #6 Misfire Count, Short FT #1, Short FT #2, Long FT #1 and long FT #2 in the Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST [03/2012 - 07/2012]»(ref-602699-S14419194982014030500000) .
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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.
2. Refer to A/F Sensor Determination (worst value) #1, A/F Sensor Determination (worst value) #2, Engine Speed Fluctuation Avg (worst value) #1 to #6, Cylinder #1 to #6 Misfire Count, Short FT #1, Short FT #2, Long FT #1 and long FT #2 in the Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST [07/2012 - ]»(ref-602699-S27023949902014030500000) .
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Refer to "Data List / Active Test" [AFS Voltage B1S1 and AFS Voltage B2S1]. Refer to «DATA LIST / ACTIVE TEST [03/2012 - 07/2012]»(ref-602699-S14419194982014030500000) .
2. Read freeze frame data using the Techstream. 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.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Refer to "Data List / Active Test" [AFS Voltage B1S1 and AFS Voltage B2S1]. Refer to «DATA LIST / ACTIVE TEST [07/2012 - ]»(ref-602699-S27023949902014030500000) .
2. Read freeze frame data using the Techstream. 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.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

DTC SUMMARY

HINT

The vent valve is built into the canister pump module.

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

HINT

The vent valve is built into the canister pump module.

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

HINT

1. DTC P2610 is set if an internal ECM problem is detected. Diagnostic procedures are not required. ECM replacement is required.
2. Read freeze frame data using the Techstream. 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.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Read freeze frame data using the Techstream. 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.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Read freeze frame data using the Techstream. 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.

Scheme 62

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC U0101) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC U0101 is output A DTC U0101 and other DTCs are output B HINT: If any DTCs other than U0101 are output, troubleshoot those DTCs first. B --> See step 6 A: Go to next step
2. INSPECT ECU POWER SOURCE CIRCUIT (TCM POWER SOURCE) Disconnect the TCM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage (except U880F) Tester Connection Condition Specified Condition D2-1 (BATT) - D2-8 (E1) Always 11 to 14 V D2-18 (+B) - D2-8 (E1) Engine switch on (IG) 11 to 14 V Standard Voltage (for U880F) Tester Connection Condition Specified Condition A73-6 (BATT) - A73-2 (E1) Always 11 to 14 V A73-5 (+B) - A73-2 (E1) Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *A except U880F *B for U880F *a Front view of wire harness connector (to TCM) - - Result Result Proceed to OK A NG (for U660E) B NG (for U660F) C NG (for U880F) D Reconnect the TCM connector. B --> See step 7 C --> See step 9 D --> See step 10 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - TCM) Disconnect the TCM connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (except U880F) Tester Connection Condition Specified Condition D2-6 (CAN+) - D1-24 (CAN+) Always Below 1 ohms D2-7 (CAN-) - D1-1 (CAN-) Always Below 1 ohms D2-6 (CAN+) or D1-24 (CAN+) - Body ground Always 10 kohms or higher D2-7 (CAN-) or D1-1 (CAN-) - Body ground Always 10 kohms or higher Standard Resistance (for U880F) Tester Connection Condition Specified Condition A73-21 (CAN+) - D1-24 (CAN+) Always Below 1 ohms A73-13 (CAN-) - D1-1 (CAN-) Always Below 1 ohms A73-21 (CAN+) or D1-24 (CAN+) - Body ground Always 10 kohms or higher A73-13 (CAN-) or D1-1 (CAN-) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the TCM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - TCM) OK: Go to next step
4. REPLACE TCM Replace the TCM. for U660E. Refer to «REMOVAL [07/2012 - ]»(ref-602716-S42082346122014030500000) for U660F. Refer to «REMOVAL [07/2012 - ]»(ref-602717-S31339026632014030500000) for U880F. Refer to «REMOVAL [07/2012 - ]»(ref-602718-S34482759042014030500000) NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC U0101) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [07/2012 - ]»(ref-602560-S10249755982014030500000) . Turn the engine switch off. Turn the engine switch on (IG). Turn the Techstream on. Wait for 5 seconds or more. Enter the following menus: Powertrain / Engine / Trouble Codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC U0101 is output B B --> See step 8 A --> END
6. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [07/2012 - ]»(ref-602699-S06530808582014030500000)
7. GO TO TCM POWER SOURCE CIRCUIT. Refer to «ECU Power Source Circuit»(ref-602719-S04871382112014030500000)
8. REPLACE ECM. Refer to «REMOVAL [07/2012 - ]»(ref-602706-S02492123622014030500000)
9. GO TO TCM POWER SOURCE CIRCUIT. Refer to «ECU Power Source Circuit»(ref-602720-S40005561582014030500000)
10. GO TO TCM POWER SOURCE CIRCUIT. Refer to «ECU Power Source Circuit»(ref-602721-S23803625752014030500000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 63

1. CHECK VACUUM HOSES Check the air and vacuum hoses for looseness, disconnection and blockage. OK No looseness, disconnection or blockage. TEXT IN ILLUSTRATION *1 Engine *2 Vacuum Switching Valve for Active Control Engine Mount *3 Engine Mounting Insulator *4 ECM *5 Air Cleaner *6 Vacuum Tank *7 to Vacuum Switching Valve (for Intake Air Control Valve) NG --> REPAIR OR REPLACE VACUUM HOSES OK: Go to next step
2. CHECK VACUUM Disconnect the vacuum hose from the air cleaner cap. Start the engine. Check that the disconnected port located on the vacuum tank applies suction to your finger. OK Vacuum exists. Reconnect the vacuum hose. NG --> CHECK AND REPLACE VACUUM SOURCE AND HOSES OK: Go to next step
3. INSPECT VACUUM SWITCHING VALVE FOR ACTIVE CONTROL ENGINE MOUNT (OPERATION) Inspect the vacuum switching valve for active control engine mount operation. Refer to «INSPECTION [03/2012 - ] - Step 1»(ref-602706-S05089245212014030500000) . NG --> See step 8 OK: Go to next step
4. INSPECT VACUUM SWITCHING VALVE FOR ACTIVE CONTROL ENGINE MOUNT (RESISTANCE) Inspect the vacuum switching valve for active control engine mount. Refer to «INSPECTION [03/2012 - ] - Step 2»(ref-602706-S05089245212014030500000) . NG --> See step 8 OK: Go to next step
5. INSPECT FRONT ENGINE MOUNTING INSULATOR Inspect the front engine mounting insulator. Refer to «ON-VEHICLE INSPECTION [03/2012 - ] - Step 1»(ref-602706-S40243650802014030500000) . NG --> See step 9 OK: Go to next step
6. INSPECT VACUUM SWITCHING VALVE FOR ACTIVE CONTROL ENGINE MOUNT (POWER SOURCE VOLTAGE) Disconnect the vacuum switching valve for active control engine mount connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition D4-1 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Vacuum Switching Valve for Active Control Engine Mount) Reconnect the vacuum switching valve for active control engine mount connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - VACUUM SWITCHING VALVE) OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM) Disconnect the vacuum switching valve for active control engine mount connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D4-2 - D1-83 (ACM) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D4-2 or D1-83 (ACM) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the vacuum switching valve for active control engine mount connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VACUUM SWITCHING VALVE - ECM) OK --> See step 10
8. REPLACE VACUUM SWITCHING VALVE FOR ACTIVE CONTROL ENGINE MOUNT. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S11151346102014030500000)
9. REPLACE FRONT ENGINE MOUNTING INSULATOR ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S25934818792014030500000)
10. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Inspection Method

Drive at 6.25 mph (10 km/h), depress the accelerator pedal by 1/2 to 3/4 and keep it in that position. Under these conditions, if the engine speed decreases to 1000rpm when the brake pedal is depressed, then the brake override system has been activated.

HINT

1. Under normal conditions, the Accelerator Position value changes in response to the Accel Sens. No. 1 Volt % value. For more information on the numerical values, refer to the Data List. Refer to «DATA LIST / ACTIVE TEST [03/2012 - 07/2012]»(ref-602699-S14419194982014030500000) .
2. If the Data List values of Accelerator Position and Accel Sens. No. 1 Volt % do not match, and the value of Accelerator Position changes but the value of Accel Sens. No. 1 Volt % is constant, this confirms that brake override system has activated. (Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.)

Note. The brake override system restricts driving torque if the brake pedal is depressed when driving with the accelerator pedal depressed. If a customer reports experiencing loss of torque after the accelerator and brake pedals have both been intentionally depressed, explain to the customer that this is not a malfunction, and that the customer should avoid depressing both the accelerator and brake pedals at the same time. Example: While operating the accelerator pedal, the customer uses their left foot to operate the brake pedal.

Inspection Method

Drive at 6.25 mph (10 km/h), depress the accelerator pedal by 1/2 to 3/4 and keep it in that position. Under these conditions, if the engine speed decreases to 1000rpm when the brake pedal is depressed, then the brake override system has been activated.

HINT

1. Under normal conditions, the Accelerator Position value changes in response to the Accel Sens. No. 1 Volt % value. For more information on the numerical values, refer to the Data List. Refer to «DATA LIST / ACTIVE TEST [07/2012 - ]»(ref-602699-S27023949902014030500000) .
2. If the Data List values of Accelerator Position and Accel Sens. No. 1 Volt % do not match, and the value of Accelerator Position changes but the value of Accel Sens. No. 1 Volt % is constant, this confirms that brake override system has activated. (Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.)

Note. The brake override system restricts driving torque if the brake pedal is depressed when driving with the accelerator pedal depressed. If a customer reports experiencing loss of torque after the accelerator and brake pedals have both been intentionally depressed, explain to the customer that this is not a malfunction, and that the customer should avoid depressing both the accelerator and brake pedals at the same time. Example: While operating the accelerator pedal, the customer uses their left foot to operate the brake pedal.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT

1. Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
2. Read freeze frame data using the Techstream. 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.

Scheme 64

Scheme 65

Scheme 66

Scheme 67

1. CONFIRM DTC Turn the engine switch off and wait for 10 seconds. Turn the engine switch on (IG). Turn the engine switch off and wait for 10 seconds. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream 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. NOTE: If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored. NEXT: Go to next step
2. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. 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 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). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - 07/2012]»(ref-602560-S42705218842014030500000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. 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. NEXT: Go to next step
3. PERFORM EVAP SYSTEM CHECK (MANUAL MODE) NOTE: In the Evaporative System Check (Manual Mode), the series of 6 Evaporative System Check steps are performed manually using the Techstream. 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 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). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - 07/2012]»(ref-602560-S42705218842014030500000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
4. PERFORM EVAP SYSTEM CHECK (STEP 1/6) Check the EVAP pressure in step 1/6. RESULT DTC *1 Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +/-0.3 kPa(gauge) [2.25 mmHg(gauge)] or more Canister pressure sensor signal noise B (P0452 or P0453) *2 EVAP pressure is below 42.11 kPa(abs) [315.867 mmHg(abs)] or 123.761 kPa(abs) [928.331 mmHg(abs)] or more EVAP pressure deviates +/-10 kPa(gauge) [+/-75 mmHg(gauge)] from actual atmosphere pressure *3 Canister pressure sensor or its circuit has malfunction C *1: These DTCs are already present in the 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 P0452 or P0453 is stored 0.5 seconds after the engine switch is turned to on (IG). HINT: *3: Canister pressure sensor standard output range is 70 to 110 kPa(abs) [525 to 825 mmHg(abs)]. This varies by weather. B --> See step 38 C --> See step 12 A: Go to next step
5. PERFORM EVAP SYSTEM CHECK (STEP 1/6 TO 2/6) Check the EVAP pressure in steps 1/6 and 2/6. RESULT DTC* Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/6. Then decreases to reference pressure Not yet determined A P2402 Small difference between EVAP pressures during steps 1/6 and 2/6 Leak detection pump stuck ON B *: These DTCs are already present in the 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 2/6. B --> See step 31 A: Go to next step
6. PERFORM EVAP SYSTEM CHECK (STEP 2/6) 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 1/6 finishes and step 2/6 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 kPa(gauge) and -1.057 kPa(gauge) [-36.38 mmHg(gauge) and -7.929 mmHg(gauge)] Not yet determined A P043F and P2401 EVAP pressure in inspection item (B) is -1.057 kPa(gauge) [-7.929 mmHg(gauge)] or more Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in inspection item (B) is less than -4.85 kPa(gauge) [-36.38 mmHg(gauge)] Reference orifice clogged C P2419 EVAP pressure in inspection item (A) is more than -0.25 kPa(gauge) [-1.875 mmHg(gauge)] Vent valve stuck closed Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) D *2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. B --> See step 11 C --> See step 38 D --> See step 13 A: Go to next step
7. PERFORM EVAP SYSTEM CHECK (STEP 2/6 TO 3/6) Check the EVAP pressure in step 3/6. RESULT DTC* Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or more within 10 seconds of proceeding from step 2/6 to step 3/6 Not yet determined A P2420 No variation in EVAP pressure even after proceeding from step 2/6 to step 3/6 Vent valve stuck open (vent) Canister (charcoal filter inside canister) clogged B P0451 No variation in EVAP pressure during steps 1/6 through 3/6 Canister pressure sensor output value stuck Vent valve broken (valve split in two) Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. B --> See step 27 C --> See step 15 A: Go to next step
8. PERFORM EVAP SYSTEM CHECK (STEP 3/6) Wait until the EVAP pressure change is less than 0.1 kPa(gauge) [0.75 mmHg(gauge)] 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. NEXT: Go to next step
9. PERFORM EVAP SYSTEM CHECK (STEP 4/6) Check the EVAP pressure in step 4/6. RESULT DTC*1 Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or more within 10 seconds of proceeding from step 3/6 to step 4/6 Not yet determined A P0441 *2 EVAP pressure increases by 0.3 kPa(gauge) [2.25 mmHg(gauge)] or more within 10 seconds of proceeding from step 3/6 to step 4/6 Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake air surge tank assembly Problems in EVAP hose between canister and purge VSV ECM B P0441 Variation in EVAP pressure is less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] for 10 seconds, after proceeding from step 3/6 to step 4/6 Purge VSV stuck closed Purge VSV circuit Canister (charcoal filter inside canister) clogged Problems in EVAP hose between purge VSV and intake air surge tank assembly Problems in EVAP hose between canister and purge VSV ECM C *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. *2: This result suggests that due to purge line blockage or purge VSV malfunction, the DTC was stored by the purge flow monitor while the engine was running, or that key-off monitor test result were nearly borderline values. B --> See step 22 C --> See step 17 A: Go to next step
10. PERFORM EVAP SYSTEM CHECK (STEP 5/6) Check the EVAP pressure in step 5/6. Compare the EVAP pressure in step 3/6 and the second reference pressure (step 5/6). RESULT DTC* Result Suspected Trouble Area Proceed to - EVAP pressure from step 3/6 lower than second reference pressure (step 5/6) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure from step 3/6 higher than [second reference pressure (step 5/6) x 0.2] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure from step 3/6 higher than second reference pressure (step 5/6) EVAP small leak B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. A --> See step 43 B --> See step 17
11. PERFORM EVAP SYSTEM CHECK (STEP 3/6) Check the EVAP pressure in step 3/6. RESULT DTC* Result Suspected Trouble Area Proceed to P043F EVAP pressure less than [reference pressure] measured in step 2/6 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured in step 2/6 Leak detection pump stuck off B *: These DTCs are already present in the 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 2/6. A --> See step 38 B --> See step 31
12. INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT) Check the canister pressure sensor circuit, referring to DTC P0451 canister pressure sensor circuit inspection procedure. Refer to «DTC P0451: Evaporative Emission Control System Pressure Sensor Range / Performance; DTC P0452: Evaporative Emission Control System Pressure Sensor / Switch Low Input; DTC P0453: Evaporative Emission Control System Pressure Sensor / Switch High Input»(ref-602702-S16573901362014030500000) . NEXT --> See step 48
13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) 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 Leak detection pump performance deteriorates Leak detection pump circuit malfunctioning (large resistance exists in the circuit) ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
14. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the engine 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 A43-30 (VPMP) - O12-1 (VGND) Always Below 1 ohms A43-30 (VPMP) or O12-1 (VGND) - Body ground Always 10 kohms 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 B --> See step 40 A: Go to next step
15. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) 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 O12-4 (MGND) - Body ground Always Below 1 ohms Canister pump module Wire harness or connector between canister pump module and ECM ECM A 10 kohms or higher Wire harness or connector between canister pump module and body ground B B --> See step 40 A: Go to next step
16. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) 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 A43-49 (MPMP) - O12-3 (MTRB) Always Below 1 ohms Canister pump module ECM A 10 kohms or higher Wire harness or connector between ECM and canister pump module B A --> See step 45 B --> See step 40
17. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control. Disconnect the hose (connected to the canister) from the purge VSV. TEXT IN ILLUSTRATION *1 Hose (to Canister) *2 Purge VSV Start the engine. Using the Techstream, turn off the purge VSV (Activate the VSV for Evap Control: OFF). Use your finger to confirm that the purge VSV has no suction. Using the Techstream, turn on the purge VSV (Activate the VSV for Evap Control: ON). Use your finger to confirm that the purge VSV has suction. RESULT Test Result Suspected Trouble Area Proceed to No suction when purge VSV turned off, and suction applied when turned on Blockage in the purge line is considered (based on result of step 9): Problems with EVAP hose between canister and purge VSV Canister (charcoal filter inside canister) clogged ECM A Leakage is considered (based on result of step 10): Fuel cap Leakage from EVAP line, fuel tank, or canister assembly B Suction applied when purge VSV turned off Purge VSV stuck open C No suction when purge VSV turned on Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake air surge tank assembly D B --> See step 20 C --> See step 21 D --> See step 23 A: Go to next step
18. INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
19. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister. Refer to «INSPECTION [03/2012 - ]»(ref-602694-S32050726402014030500000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 38
20. CHECK FUEL CAP 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) [24 to 27.75 mmHg(gauge)] using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa(gauge) [15 mmHg(gauge)] or more, the fuel cap is normal. RESULT Test Result Suspected Trouble Area Proceed to Fuel cap correctly installed - A Fuel cap loose Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications B Defective fuel cap - B No fuel cap - C A --> See step 37 B --> See step 35 C --> See step 36
21. INSPECT PURGE VSV Turn the engine switch off. Disconnect the purge VSV connector. TEXT IN ILLUSTRATION *1 Hose (to Canister) *2 Connector *3 Purge VSV Disconnect the hose (connected to the canister) from the purge VSV. Start the engine. Use your finger to confirm that the purge VSV has no suction. RESULT Test Result Suspected Trouble Area Proceed to No suction Wire harness or connector between purge VSV and ECM (short to ground) ECM A Suction applied Purge VSV B A --> See step 26 B --> See step 39
22. INSPECT EVAP HOSE (PURGE VSV - CANISTER) Check for blockages in the EVAP purge line between the purge VSV and canister. OK No blockages in the EVAP purge line between the purge VSV and canister. NG --> See step 44 OK: Go to next step
23. CHECK EVAP HOSE (PURGE VSV - INTAKE AIR SURGE TANK ASSEMBLY) Disconnect the hose (connected to the intake air surge tank assembly) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Hose (to intake air surge tank assembly) Start the engine. Use your finger to confirm that the hose has suction. RESULT Test Result Suspected Trouble Area Proceed to Suction applied EVAP hose between purge VSV and intake air surge tank assembly normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM A No suction Intake air surge tank assembly port EVAP hose between purge VSV and intake air surge tank assembly B B --> See step 34 A: Go to next step
24. INSPECT PURGE VSV Remove the purge VSV. Apply battery voltage to the terminals of the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV Confirm that air flows from port E to port F. RESULT Test Result Condition Suspected Trouble Area Proceed to Air flows Battery voltage is applied to purge VSV terminals Purge VSV normal Purge VSV power source Wire harness or connector between purge VSV and ECM A No air flow Battery voltage is applied to purge VSV terminals Purge VSV B B --> See step 39 A: Go to next step
25. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV connector. Turn the engine switch on (IG). TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Purge VSV) Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to D6-1 - Body ground Engine switch on (IG) 11 to 14 V Purge VSV power source normal Wire harness or connector between purge VSV and ECM A Other than result above Wire harness or connectors between purge VSV and battery B B --> See step 40 A: Go to next step
26. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector. Disconnect the purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D6-2 - D1-63 (PRG) Always Below 1 ohms D6-2 or D1-63 (PRG) - Body ground Always 10 kohms or higher OK --> See step 47 NG --> See step 40
27. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the engine switch off. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Disconnect the canister pump module connector. Turn the engine switch to on (IG). Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to O12-5 (VLVB) - Body ground Engine switch on (IG) 11 to 14 V Wire harness or connector between vent valve and ECM Vent valve Canister (charcoal filter inside canister) clogged ECM A Below 3 V Power source wire harness of vent valve B B --> See step 40 A: Go to next step
28. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) 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 ECM A Not operating Vent valve B B --> See step 38 A: Go to next step
29. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the engine switch off. 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 Test Result Suspected Trouble Area Proceed to A43-30 (VPMP) - O12-1 (VGND) Always Below 1 ohms Canister (charcoal filter inside canister) clogged ECM A 10 kohms or higher Wire harness or connector between ECM and canister pump module B B --> See step 40 A: Go to next step
30. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) Check for filter blockage in the canister. Refer to «INSPECTION [03/2012 - ]»(ref-602694-S32050726402014030500000) . OK No blockages in the canister. OK --> See step 47 NG --> See step 38
31. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VACUUM PUMP) Turn the engine switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Turn the engine switch to on (IG). Enter the following menus: Powertrain / Engine / Active Test / Activate the Vacuum Pump. Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to O12-3 (MTRB) - Body ground Leak detection pump on and off (Active Test ON and OFF) Below 3 V when OFF 9 to 14 V when ON Wire harness or connector between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON Wire harness or connector between leak detection pump and ECM ECM B 9 to 14 V when OFF and ON ECM C B --> See step 33 C --> See step 47 A: Go to next step
32. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) Turn the engine 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 O12-4 (MGND) - Body ground Always Below 1 ohms Leak detection pump A 10 kohms or higher Wire harness or connector between canister pump module and body ground B A --> See step 38 B --> See step 40
33. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) Turn the engine 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 A43-49 (MPMP) - O12-3 (MTRB) Always Below 1 ohms A43-49 (MPMP) or O12-3 (MTRB) - Body ground Always 10 kohms 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 --> See step 47 B --> See step 40
34. INSPECT INTAKE AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT) Stop the engine. Disconnect the EVAP hose from the intake air surge tank assembly. Start the engine. Use your finger to confirm that the port of the intake air surge tank assembly has suction. RESULT Tester Connection Suspected Trouble Area Proceed to Suction applied EVAP hose between intake air surge tank assembly and purge VSV A No suction Intake air surge tank assembly B A --> See step 41 B --> See step 42
35. CORRECTLY REINSTALL OR REPLACE FUEL CAP HINT: When reinstalling the fuel cap, tighten it firmly (only one click sound could be head). When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it firmly. NEXT --> See step 48
36. REPLACE FUEL CAP HINT: When installing the fuel cap, tighten it firmly (only one click sound could be head). NEXT --> See step 48
37. LOCATE EVAP LEAK PART Disconnect the vent hose. TEXT IN ILLUSTRATION *1 Fuel Tank *2 Canister *3 Canister Filter *4 Fuel Cap *a Disconnect the vent hose here - - Connect the EVAP pressure tester tool to the canister pump module with the adapter. TEXT IN ILLUSTRATION *1 Canister Pump Module *2 Adapter *3 EVAP Pressure Tester Tool - - Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 27.75 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 fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks. NEXT --> See step 48
38. REPLACE CANISTER Replace the canister. Refer to «REMOVAL [03/2012 - ]»(ref-602694-S33255906282014030500000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister Filter - - *a Inspection Area (check for disconnection and/or cracks) - - NEXT --> See step 48
39. REPLACE PURGE VSV Replace the purge VSV. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602694-S02260395772014030500000) . NEXT --> See step 48
40. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 48
41. REPAIR OR REPLACE EVAP PURGE LINE (INTAKE AIR SURGE TANK ASSEMBLY - PURGE VSV) NEXT --> See step 48
42. INSPECT INTAKE AIR SURGE TANK ASSEMBLY (EVAP PURGE PORT) Check that the EVAP purge port of the intake air surge tank assembly is not clogged. If necessary, replace the intake air surge tank assembly. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602713-S29687734612014030500000) . NEXT --> See step 48
43. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in. NEXT --> See step 48
44. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) NEXT --> See step 48
45. REPLACE CANISTER Replace the canister. Refer to «REMOVAL [03/2012 - ]»(ref-602694-S33255906282014030500000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. if the canister filter has blockages, replace the canister filter. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Fuel Tank *5 Canister Filter - - *a Inspection Area (check for disconnection and/or cracks) - - NEXT: Go to next step
46. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. 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 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 an Evaporative System Check, keep the fuel temperature below 35°C (95°F). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - 07/2012]»(ref-602560-S42705218842014030500000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine / Trouble Codes. Result Proceed to EVAP system DTCs are output A DTC is not output (Pending DTC is not output) B B --> END A: Go to next step
47. REPLACE ECM Replace the ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000) . NEXT: Go to next step
48. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) NOTE: The Evaporative System Check (Automatic Mode) consists of 6 steps performed automatically by the Techstream. 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 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 an Evaporative System Check, keep the fuel temperature below 35°C (95°F). Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - 07/2012]»(ref-602560-S42705218842014030500000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. 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 found, the repair has been successfully completed. NEXT --> END

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT

1. Using the Techstream monitor results enables the EVAP (Evaporative Emission) system to be confirmed.
2. Read freeze frame data using the Techstream. 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.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 68

1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR INTAKE CONTROL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Intake Control. Check if operating noise can be heard when operating the intake air control valve assembly using the Techstream. OK Operating noise can be heard. NG --> See step 2 OK --> See step 5
2. CHECK INTAKE AIR SURGE TANK ASSEMBLY (INTAKE AIR CONTROL VALVE ASSEMBLY OPERATION) Inspect the intake air control valve assembly. Refer to «ON-VEHICLE INSPECTION [03/2012 - ] - Step 1»(ref-602713-S20293703872014030500000) . NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY VOLTAGE) Disconnect the intake air control valve assembly connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition D5-2 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Intake Air Control Valve Assembly) Reconnect the intake air control valve assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - INTAKE AIR CONTROL VALVE ASSEMBLY) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY - ECM) Disconnect the intake air control valve assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D5-1 - D1-62 (ACIS) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D5-1 or D1-62 (ACIS) - Body ground Always 10 kohms or higher Reconnect the intake air control valve assembly connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY - ECM) OK --> See step 7
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - 07/2012]»(ref-602560-S03290602512014030500000)
6. REPLACE INTAKE AIR SURGE TANK ASSEMBLY. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602713-S29687734612014030500000)
7. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 69

1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR AICS) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for AICS. Check the operation of the VSV when the VSV is operated using the Techstream. Standard Techstream Operation Specified Condition ON Air from port E flows out through port F OFF Air from port E flows out through the air filter NG --> See step 2 OK --> See step 7
2. CHECK VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE) Check the vacuum switching valve for air intake control valve. Refer to «ON-VEHICLE INSPECTION [03/2012 - ]»(ref-602713-S24909017892014030500000) . NG --> REPLACE VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE FOR AIR INTAKE CONTROL VALVE) Disconnect the vacuum switching valve for air intake control valve connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition A14-1 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Vacuum Switching Valve for Air Intake Control Valve) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - VACUUM SWITCHING VALVE) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE FOR AIR INTAKE CONTROL VALVE - ECM) Disconnect the vacuum switching valve for air intake control valve connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A14-2 - D1-61 (AICV) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A14-2 or D1-61 (AICV) - Body ground Always 10 kohms or higher Reconnect the ECM connector. Reconnect the vacuum switching valve for air intake control valve connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VACUUM SWITCHING VALVE FOR AIR INTAKE CONTROL VALVE - ECM) OK: Go to next step
5. INSPECT AIR CLEANER CAP SUB-ASSEMBLY (VACUUM SURGE TANK) Inspect the vacuum surge tank. Refer to «ON-VEHICLE INSPECTION [03/2012 - ]»(ref-602713-S11643096372014030500000) . NG --> REPAIR OR REPLACE AIR CLEANER CAP SUB-ASSEMBLY OK --> See step 6
6. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)
7. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - 07/2012]»(ref-602560-S03290602512014030500000)

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.