Engine Control System (2ZR-FXE) (Diagnostic Codes (P148F - U0293) & Circuit Tests)): Diagnosis Lexus CT I

INSPECTION PROCEDURE

HINT

1. DTC P148F may be stored if the engine has continuously run with insufficient engine coolant. If the engine coolant is sufficient and DTC P148F recur when the vehicle is brought to the workshop, confirm whether engine coolant was added after the vehicle had been driven with insufficient engine coolant.
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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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

HINT

1. 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.
2. The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM shuts off the throttle actuator current when the electronic throttle control system malfunctions.

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

HINT

1. 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.
2. Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(ref-568607-S17841424132013072300000) .

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

HINT

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.

HINT

1. Refer to "Data List / Active Test" [Throttle Position Commanded, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open) and Throttle Motor Duty (Close)]. Refer to «DATA LIST / ACTIVE TEST»(ref-568607-S17841424132013072300000) .
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.

HINT

1. Although the DTC titles say oxygen sensor, these DTCs relate to the air fuel ratio sensor.
2. Sensor 1 refers to the sensor mounted in front of the three-way catalytic converter and located near the engine assembly.
3. 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.
4. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
5. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
6. Sensor 1 refers to the sensor closest to the engine assembly.
7. 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. Sensor 1 refers to the sensor closest to the engine assembly.
3. Sensor 2 refers to the sensor farthest away from the engine assembly.
4. Refer to "Data List / Active Test" [A/F Sensor Determination (worst value) #1, Engine Speed Fluctuation Avg (worst value) #1 to #4, Cylinder #1 to #4 Misfire Count, Short FT #1 and Long FT #1]. Refer to «DATA LIST / ACTIVE TEST»(ref-568607-S17841424132013072300000) .

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1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P219A) Connect the Techstream to the DLC3. Turn the power switch to on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P219A is output A DTC P219A and other DTCs are output B HINT: If any DTCs other than P219A are output, troubleshoot those DTCs first. B --> See step 14 A: Go to next step
2. READ VALUE USING TECHSTREAM (FREEZE FRAME DATA) Connect the Techstream to the DLC3. Turn the power switch on (IG). Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored. Refer to «FREEZE FRAME DATA»(ref-568607-S08374145412013072300000) . Freeze Frame Data Item for DTC P219A Vehicle Speed Engine Speed Calculate Load Short FT #1 Long FT #1 Cylinder #1 Misfire Count to Cylinder #4 Misfire Count A/F Sensor Determination (worst value) #1 Engine Speed Fluctuation Avg (worst value) #1 to #4 HINT: If [Shot FT + Long FT] shows a positive value, then the air fuel ratio is lean. A negative value means that the air fuel ratio is rich. NEXT: Go to next step
3. READ VALUE USING TECHSTREAM (MONITOR RESULT) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. HINT: If the value of "Cylinder #1 Misfire Count to Cylinder #4 Misfire Count" increases while idling or driving, proceed to step 6. Inspect the cylinders which have an increased misfire count as indicated by "Cylinder #1 Misfire Count to Cylinder #4 Misfire Count". Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / Fuel System / Details / A/F SENSOR DETERMINATION B1 and ENGINE SPEED FLUCTUATION AVERAGE B1. Check the Test Result (A/F SENSOR DETERMINATION B1 and ENGINE SPEED FLUCTUATION AVERAGE B1. RESULT Result Proceed to A/F SENSOR DETERMINATION is Fail A A/F SENSOR DETERMINATION and ENGINE SPEED FLUCTUATION AVERAGE are Fail B ENGINE SPEED FLUCTUATION AVERAGE is Fail B* HINT: If neither A/F SENSOR DETERMINATION nor ENGINE SPEED FLUCTUATION AVERAGE shows Fail (both remain showing Pass), then drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern again. If Fail is not displayed (Pass is still displayed) after driving, proceed to step 4. *: Inspect the cylinders which have the larger values, focusing on the cylinder which has the largest value, as indicated by "Engine Speed Fluctuation Avg (worst value) #1 to #4". B --> See step 6 A: Go to next step
4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE»(ref-568589-S23460353802013072300000) . Warm up the engine. HINT: The A/C switch and all accessory switches should be off and the shift neutral (N) or park (P) should be selected. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / Data List / Gas Misfire / Cylinder #1 to #4 Misfire Count. HINT: If the misfire count increases when Control the Injection Volume is selected (the injection volume is 0%), proceed to step 6, Check Intake System. Perform the Control the Injection Volume operation with the engine idling. Check Cylinder #1 to #4 Misfire Count while decreasing the injection volume in increments of 5%. NOTE: Do not decrease the injection volume to lower than -20%. Result It can be determined that the cylinder whose misfire count does not increase is rich. Therefore, inspect the cylinders whose misfire counts do not increase. NEXT: Go to next step
5. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No exhaust gas leaks. NG --> REPAIR OR REPLACE EXHAUST SYSTEM OK: Go to next step
6. CHECK INTAKE SYSTEM Check the intake system for vacuum leaks. Refer to «ON-VEHICLE INSPECTION»(ref-568742-S28571627562013072300000) . OK No leaks in intake system. NG --> REPAIR OR REPLACE INTAKE SYSTEM OK: Go to next step
7. INSPECT SPARK PLUG Inspect the spark plug of the imbalanced cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-568727-S24737313612013072300000) . NG --> See step 15 OK: Go to next step
8. CHECK FOR SPARK (SPARK TEST) Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-568727-S24737313612013072300000) . HINT: If the result of the spark test is normal, proceed to the next step. NEXT: Go to next step
9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 8»(ref-568735-S41211346862013072300000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
10. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Disconnect the ECM connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D27-85 (#10) - D27-109 (E01) Power switch on (IG) 11 to 14 V D27-84 (#20) - D27-109 (E01) Power switch on (IG) 11 to 14 V D27-83 (#30) - D27-109 (E01) Power switch on (IG) 11 to 14 V D27-82 (#40) - D27-109 (E01) Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 16 OK: Go to next step
11. CHECK FUEL INJECTOR ASSEMBLY OF IMBALANCE CYLINDER Check the fuel injector injection [whether fuel volume is high or low, and whether injection pattern is poor]. Refer to «INSPECTION»(ref-568741-S13114467992013072300000) . NG --> See step 17 OK: Go to next step
12. CHECK FOR CAUSE OF FAILURE If the diagnosis procedure has been performed and the malfunctioning part cannot be determined, perform the following inspection. Check for deposits on the intake valve. HINT: The DTC may have been stored due to deposits that have accumulated in the intake valve. Therefore, remove the cylinder head and inspect the intake valve. Check for deposits in the EGR delivery chamber. HINT: The DTC may have been stored due to deposits that have accumulated in the EGR delivery chamber. Therefore, remove and inspect the EGR delivery chamber. NEXT: Go to next step
13. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED 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-568607-S14015113742013072300000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Check for DTCs. Result P219A is not output. NEXT --> END
14. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-568607-S40570208092013072300000)
15. REPLACE SPARK PLUG. Refer to «REMOVAL - Step 3»(ref-568740-S18930204062013072300000)
16. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-568734-S05321526172013072300000)
17. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-568741-S26257196172013072300000)

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]. Refer to «DATA LIST / ACTIVE TEST»(ref-568607-S17841424132013072300000) .
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. Sensor 1 refers to the sensor closest to the engine assembly.
4. 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

1. DTC P2610 is output 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.

HINT

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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE ELECTRIC WATER PUMP) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Electric Water Pump. Touch the engine water pump and check that the pump assembly is operating (vibrating). OK The engine water pump assembly is operating (vibrating). NG --> See step 4 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (ENGINE WATER PUMP ASSEMBLY - ECM) HINT: Confirm a good connection at the engine water pump assembly and ECM connectors. Disconnect the engine water pump assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D13-2 (NWP) - A60-11 (WPI) Always Below 1 ohms D13-4 (SWP) - A60-10 (WPO) Always Below 1 ohms D13-2 (NWP) or A60-11 (WPI) - Body ground Always 10 kohms or higher D13-4 (SWP) or A60-10 (WPO) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK ECM (WPI VOLTAGE) Disconnect the engine water pump assembly connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D13-2 (NWP) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Engine Water Pump Assembly) NG --> See step 15 OK --> See step 13
4. CHECK TERMINAL VOLTAGE (ENGINE WATER PUMP ASSEMBLY) HINT: Confirm a good connection at the engine water pump assembly and ECM connectors. Disconnect the engine water pump assembly connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition D13-1 (+B) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Engine Water Pump Assembly) NG --> See step 9 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (ENGINE WATER PUMP ASSEMBLY - BODY GROUND) Disconnect the engine water pump assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D13-5 (PGND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (ENGINE WATER PUMP ASSEMBLY - ECM) Disconnect the engine water pump assembly connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D13-2 (NWP) - A60-11 (WPI) Always Below 1 ohms D13-4 (SWP) - A60-10 (WPO) Always Below 1 ohms D13-2 (NWP) or A60-11 (WPI) - Body ground Always 10 kohms or higher D13-4 (SWP) or A60-10 (WPO) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. REPLACE ENGINE WATER PUMP ASSEMBLY Replace the engine water pump assembly. Refer to «REMOVAL»(ref-568743-S04990838952013072300000) . NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P261B, P261C OR P261D) 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-568607-S14015113742013072300000) . Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble codes. Read the DTCs. RESULT Result Proceed to DTC P261B, P261C or P261D is output A DTC is not output B B --> END A --> See step 14
9. INSPECT ENG W/P RELAY Remove the ENG W/P relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 No auxiliary battery voltage applied between terminals 1 and 2 10 kohms or higher 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 ohms NG --> REPLACE ENG W/P RELAY OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (ENG W/P RELAY - ENGINE WATER PUMP ASSEMBLY) Remove the ENG W/P relay from the engine room relay block and junction block assembly. Disconnect the engine water pump assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition ENG W/P relay terminal 5 - D13-1 (+B) Always Below 1 ohms ENG W/P relay terminal 5 or D13-1 (+B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. CHECK ENG W/P RELAY (POWER SOURCE) Remove the ENG W/P relay from the engine room relay block and junction block assembly. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition ENG W/P relay terminal 3 - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Engine room relay block and junction block assembly NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. CHECK HARNESS AND CONNECTOR (ENG W/P RELAY - BODY GROUND) Remove the ENG W/P relay from the engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition ENG W/P relay terminal 1 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ENG W/P RELAY - EFI MAIN RELAY)
13. REPLACE ENGINE WATER PUMP ASSEMBLY. Refer to «REMOVAL»(ref-568743-S04990838952013072300000)
14. REPLACE ECM. Refer to «REMOVAL»(ref-568740-S18557757702013072300000)
15. REPLACE ECM. Refer to «REMOVAL»(ref-568740-S18557757702013072300000)

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

HINT

1. Repeating this inspection for symptom confirmation may cause the SOC to drop, preventing the system from entering the READY-on state. In this case, use the THS charger to charge the HV battery.
2. Cranking the engine once causes the SOC to drop approximately 1%.
3. Charging the HV battery once (10 minutes) using the THS charger restores the SOC approximately 2%.
4. Charging the HV battery using the THS charger takes approximately 10 minutes when the battery temperature is 25°C (77°F) or approximately 30 minutes when the battery temperature is 0°C (32°F).
5. The THS charger is a supplemental charging device that charges the HV battery enough to enable the engine to start (the vehicle can enter the READY-on state).
6. 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

Refer to the CAN Communication System. Refer to HOW TO PROCEED WITH TROUBLESHOOTING .

HINT

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. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT

1. Using 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.

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1. CONFIRM DTC Turn the power switch off and wait for 10 seconds. Turn the power switch on (IG). Turn the power switch off and wait for 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 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 more than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) will all be stored. NEXT: Go to next step
2. PERFORM EVAPORATIVE 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 higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). 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-568607-S14015113742013072300000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. 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 EVAPORATIVE 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 higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine during this operation. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F). 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-568607-S14015113742013072300000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
4. PERFORM EVAPORATIVE 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 higher Canister pressure sensor signal noise B (P0452 or P0453) *2 EVAP pressure is less than 42.11 kPa(abs) [315.83 mmHg(abs)], or higher than 123.761 kPa(abs) [928.208 mmHg(abs)] EVAP pressure deviates +/-10 kPa [+/-75 mmHg] 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 power switch is turned on (IG). HINT: *3: Canister pressure sensor standard output range is 70 to 111 kPa(abs) [525 to 833 mmHg(abs)]. This varies by weather. B --> See step 38 C --> See step 12 A: Go to next step
5. PERFORM EVAPORATIVE 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 EVAPORATIVE 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) [-36.375 mmHg(gauge) and -7.928 mmHg(gauge)] Not yet determined A P043F and P2401 EVAP pressure in inspection item (B) is -1.057 kPa(gauge) [-7.928 mmHg(gauge)] or higher Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in inspection item (B) is less than -4.85 kPa(gauge) [-36.375 mmHg(gauge)] Reference orifice clogged C P2419 EVAP pressure in inspection item (A) is higher 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 EVAPORATIVE 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 higher 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 EVAPORATIVE SYSTEM CHECK (STEP 3/6) Wait until the EVAP pressure change is less than 0.12 kPa [0.9 mmHg] for 30 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 EVAPORATIVE 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 higher 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 higher more than 10 seconds of proceeding from step 3/6 to step 4/6 Purge VSV Purge VSV circuit Problems in EVAP hose between purge VSV and intake manifold Problems in EVAP hose between canister and purge VSV 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 manifold 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 EVAPORATIVE 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 EVAPORATIVE 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 «INSPECTION PROCEDURE»(ref-568737-S15626453342013072300000) . NEXT --> See step 48
13. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the power switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) Apply the auxiliary 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 auxiliary 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 power switch off. Disconnect the ECM connector. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A60-42 (VPMP) - R1-1 (VGND) Always Below 1 ohms A60-42 (VPMP) or R1-1 (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 R1-4 (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 A60-34 (MPMP) - R1-3 (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 and ECT / Active Test / Activate the VSV for EVAP Control. Disconnect the hose (connected to the canister) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Hose (to Canister) 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 B Suction applied when purge VSV turned off Purge VSV stuck open C No suction when purge VSV turned on Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold D B --> See step 20 C --> See step 21 D --> See step 23 A: Go to next step
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»(ref-568729-S10428342312013072300000) . 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 Techstream. 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 28 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 higher, the fuel cap is normal. RESULT Test Result Suspected Trouble Area Proceed to Fuel cap correctly installed - A Fuel cap loose Fuel cap improperly installed Defective fuel cap Fuel cap does not meet OEM specifications B Defective fuel cap - B No fuel cap - C A --> See step 37 B --> See step 35 C --> See step 36
21. INSPECT PURGE VSV Turn the power 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 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 MANIFOLD) Disconnect the hose (connected to the intake manifold) from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV *2 Hose (to intake manifold) 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 manifold normal Purge VSV Purge VSV power source Wire harness or connector between purge VSV and ECM A No suction Intake manifold port EVAP hose between purge VSV and intake manifold B B --> See step 34 A: Go to next step
24. INSPECT PURGE VSV Remove the purge VSV. Apply auxiliary 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 Auxiliary 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 Auxiliary 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 power 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 Condition Specified Condition Suspected Trouble Area Proceed to D11-2 - Body ground Power 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 auxiliary 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 D11-1 - D27-28 (PRG) Always Below 1 ohms D11-1 or D27-28 (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 power switch off. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Disconnect the canister pump module connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. RESULT Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to R1-5 (VLVB) - Body ground Power 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 power switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Component without harness connected (Canister Pump Module) Apply the auxiliary 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 auxiliary 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 power switch off. Disconnect the ECM connector. Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Test Result Suspected Trouble Area Proceed to A60-42 (VPMP) - R1-1 (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»(ref-568729-S10428342312013072300000) . 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 power switch off. Disconnect the canister pump module connector. TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Canister Pump Module) - - Turn the power switch on (IG). Enter the following menus: Powertrain / Engine and ECT / 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 R1-3 (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 power 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 R1-4 (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 power 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 A60-34 (MPMP) - R1-3 (MTRB) Always Below 1 ohms A60-34 (MPMP) or R1-3 (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 MANIFOLD (EVAP PURGE PORT) Stop the engine. Disconnect the EVAP hose from the intake manifold. Start the engine. Use your finger to confirm that the port of the intake manifold has suction. RESULT Tester Connection Suspected Trouble Area Proceed to Suction applied EVAP hose between intake manifold and purge VSV A No suction Intake manifold B A --> See step 41 B --> See step 42
35. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY 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 TANK CAP ASSEMBLY 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(gauge) [24 to 27.75 mmHg(gauge)]. Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates the leak point. Repair or replace the leak point. HINT: Disconnect the hose between the canister and fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks. NEXT --> See step 48
38. REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-568729-S41155687212013072300000) . 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 *6 Canister Filter *a Inspection Area (check for disconnection and/or cracks) - - NEXT --> See step 48
39. REPLACE PURGE VALVE Replace the purge VSV. Refer to «REMOVAL»(ref-568729-S41524717262013072300000) . NEXT --> See step 48
40. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 48
41. REPAIR OR REPLACE EVAP PURGE LINE (INTAKE MANIFOLD - PURGE VSV) NEXT --> See step 48
42. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold. Refer to «REMOVAL»(ref-568745-S02907105852013072300000) . 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»(ref-568729-S41155687212013072300000) . 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 *6 Canister Filter *a Inspection Area (check for disconnection and/or cracks) - - NEXT: Go to next step
46. PERFORM EVAPORATIVE 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 higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine in this step. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F). 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-568607-S14015113742013072300000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes. RESULT Result Proceed to EVAP system DTCs are output A No DTCs output (No pending DTCs output) B B --> END A: Go to next step
47. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-568740-S18557757702013072300000) . NEXT: Go to next step
48. PERFORM EVAPORATIVE 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 higher than 90% full because the cut-off valve may be closed, making the fuel tank leak check unavailable. Do not run the engine in this step. When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature below 35°C (95°F). 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-568607-S14015113742013072300000) . Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are found, the repair has been successfully completed. NEXT --> END

Note. After turning power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work. Refer to PRECAUTION Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Scheme 81

1. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D27-104 (E1) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT ECM (IGSW VOLTAGE) Disconnect the ECM connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A60-28 (IGSW) - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> See step 7 OK: Go to next step
3. INSPECT NO. 2 INTEGRATION RELAY (EFI MAIN RELAY) Inspect the No. 2 integration relay (EFI MAIN relay). Refer to «INSPECTION»(ref-568740-S23859448242013072300000) . NG --> See step 12 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY (EFI MAIN RELAY) - ECM) Remove the No. 2 integration relay (EFI MAIN relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1B-4 - A60-1 (+B2) Always Below 1 ohms 1B-4 - A60-2 (+B) Always Below 1 ohms 1B-2 - A60-6 (MREL) Always Below 1 ohms 1B-4 or A60-1 (+B2) - Body ground Always 10 kohms or higher 1B-4 or A60-2 (+B) - Body ground Always 10 kohms or higher 1B-2 or A60-6 (MREL) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY (EFI MAIN RELAY) - AUXILIARY BATTERY) Remove the No. 2 integration relay (EFI MAIN relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Disconnect the negative (-) auxiliary battery terminal. Disconnect the positive (+) auxiliary battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - Positive (+) auxiliary battery terminal Always Below 1 ohms 1C-1 or Positive (+) auxiliary battery terminal - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY (EFI MAIN RELAY) - BODY GROUND) Remove the No. 2 integration relay (EFI MAIN relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1B-3 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
7. INSPECT NO. 2 INTEGRATION RELAY (IG2 RELAY) Inspect the No. 2 integration relay (IG2 relay). Refer to «INSPECTION»(ref-568740-S23859448242013072300000) . NG --> See step 13 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY (IG2 RELAY) - ECM) Disconnect the ECM connector. Remove the No. 2 integration relay (IG2 relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-4 - A60-28 (IGSW) Always Below 1 ohms 1A-4 or A60-28 (IGSW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY (IG2 RELAY) - AUXILIARY BATTERY) Remove the No. 2 integration relay (IG2 relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Disconnect the negative (-) auxiliary battery terminal. Disconnect the positive (+) auxiliary battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - Positive (+) auxiliary battery terminal Always Below 1 ohms 1C-1 or Positive (+) auxiliary battery terminal - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (NO. 2 INTEGRATION RELAY (IG2 RELAY) - BODY GROUND) Remove the No. 2 integration relay (IG2 relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1A-3 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 2 INTEGRATION RELAY (IG2 RELAY)) Remove the No. 2 integration relay (IG2 relay) from the engine room relay block and junction block assembly. Disconnect the No. 2 integration relay connector. Disconnect the power management control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A20-2 (IG2D) - 1A-2 Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 15
12. REPLACE NO. 2 INTEGRATION RELAY (EFI MAIN RELAY). Refer to «REMOVAL»(ref-568740-S34448099602013072300000)
13. REPLACE NO. 2 INTEGRATION RELAY (IG2 RELAY). Refer to «REMOVAL»(ref-568740-S34448099602013072300000)
14. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-568607-S08029264032013072300000)
15. CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-568598-S32265887792013072300000)

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