Engine Control (Diagnostic Codes (P2237-U010) & Circuit Tests): Diagnosis Lexus RX III

INSPECTION PROCEDURE

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Warm up the engine at 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
6. Perform Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.

1. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich)

Scheme 62

Scheme 63

Scheme 64

1. Performing Control the Injection Volume for A/F Sensor enables technicians to check and graph the output voltages of both the air fuel ratio and heated oxygen sensors.
2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / AFS Voltage B1S1 and O2S B2S1 or AFS Voltage B1S2 and O2S B2S2.

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.

Scheme 65

1. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor 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 D20-1 (HA1A) - D1-22 (HA1A) Always Below 1 ohms D20-3 (A1A+) - D1-126 (A1A+) Always Below 1 ohms D20-4 (A1A-) - D1-125 (A1A-) Always Below 1 ohms D19-1 (HA2A) - D1-20 (HA2A) Always Below 1 ohms D19-3 (A2A+) - D1-103 (A2A+) Always Below 1 ohms D19-4 (A2A-) - D1-102 (A2A-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D20-1 (HA1A) or D1-22 (HA1A) - Body ground Always 10 kohms or higher D20-3 (A1A+) or D1-126 (A1A+) - Body ground Always 10 kohms or higher D20-4 (A1A-) or D1-125 (A1A-) - Body ground Always 10 kohms or higher D19-1 (HA2A) or D1-20 (HA2A) - Body ground Always 10 kohms or higher D19-3 (A2A+) or D1-103 (A2A+) - Body ground Always 10 kohms or higher D19-4 (A2A-) or D1-102 (A2A-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Fuel Ratio Sensor) *2 Front view of wire harness connector (to ECM) *3 Bank 1 *4 Bank 2 Reconnect the air fuel ratio sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - ECM) OK: Go to next step
2. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-400788-S35731488742011051800000) . NEXT: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S02158227972011051800000) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255 or P2256. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255 or P2256 is output) B B --> See step 4 A --> END
4. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S10545316742011051800000)

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.

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.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.

1. Each sensor reacts in accordance with increases in the fuel injection volume.

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich)

1. Performing Control the Injection Volume for A/F Sensor enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.

HINT

1. DTC P2A00 or P2A03 may also be set when the air fuel ratio remains rich or lean.
2. 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.
3. 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.
4. 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 66

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2A00 AND/OR P2A03) 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 P2A00 and/or P2A03 are output A DTC P2A00 and/or P2A03 and other DTCs are output B HINT: If any DTCs other than P2A00 and/or P2A03 are output, troubleshoot those DTCs first. B --> See step 7 A: Go to next step
2. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the air fuel ratio sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher 1 (HA2A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA2A) - 4 (A2A-) Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Component without harness connected (Air Fuel Ratio Sensor) *2 Bank 1 *3 Bank 2 Reconnect the air fuel ratio sensor connector. NG --> See step 8 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) Disconnect the air fuel ratio sensor 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 D20-1 (HA1A) - D1-22 (HA1A) Always Below 1 ohms D20-3 (A1A+) - D1-126 (A1A+) Always Below 1 ohms D20-4 (A1A-) - D1-125 (A1A-) Always Below 1 ohms D19-1 (HA2A) - D1-20 (HA2A) Always Below 1 ohms D19-3 (A2A+) - D1-103 (A2A+) Always Below 1 ohms D19-4 (A2A-) - D1-102 (A2A-) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D20-1 (HA1A) or D1-22 (HA1A) - Body ground Always 10 kohms or higher D20-3 (A1A+) or D1-126 (A1A+) - Body ground Always 10 kohms or higher D20-4 (A1A-) or D1-125 (A1A-) - Body ground Always 10 kohms or higher D19-1 (HA2A) or D1-20 (HA2A) - Body ground Always 10 kohms or higher D19-3 (A2A+) or D1-103 (A2A+) - Body ground Always 10 kohms or higher D19-4 (A2A-) or D1-102 (A2A-) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Air Fuel Ratio Sensor) *2 Front view of wire harness connector (to ECM) *3 Bank 1 *4 Bank 2 Reconnect the ECM connector. Reconnect the air fuel ratio sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AIR FUEL RATIO SENSOR - ECM) OK: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2A00 or P2A03. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2A00 or P2A03 is output) B B --> See step 5 A --> See step 9
5. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-400788-S16324759872011051800000) . NEXT: Go to next step
6. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-400784-S05337578742011051800000) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input the DTC: P2A00 or P2A03. Check the DTC judgment result. Result Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P2A00 or P2A03 is output) B B --> See step 10 A --> END
7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400784-S08158320572011051800000)
8. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-400788-S16324759872011051800000)
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-400784-S03039419332011051800000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume for A/F Sensor operation using the Techstream.

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.
6. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
7. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

1. The Control the Injection Volume for A/F Sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.

1. Each sensor reacts in accordance with increases in the fuel injection volume.

Note. The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit Exhaust gas leaks 4 Fuel pressure Exhaust gas leaks (Air fuel ratio extremely lean or rich)

1. Performing Control the Injection Volume for A/F Sensor enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
2. To display the graph, enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.

HINT

1. DTC P2A00 or P2A03 may also be set when the air fuel ratio remains rich or lean.
2. 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.
3. 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.
4. 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.

Scheme 67

Scheme 68

Scheme 69

Scheme 70

Scheme 71

Scheme 72

Scheme 73

1. CHECK VACUUM HOSES If the hose is damaged, replace the vacuum hose assembly. Check the air and vacuum hoses for looseness, disconnection and blockage. TEXT IN ILLUSTRATION *1 Engine *2 Vacuum Switching Valve for ACM *3 Engine Mounting Insulator *4 ECM *5 Air Cleaner *6 Vacuum Tank *7 to Intake Air Control Valve Actuator NG --> REPAIR OR REPLACE VACUUM HOSES OK: Go to next step
2. CHECK VACUUM Start the engine. Disconnect the vacuum hose from the air cleaner cap. 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 ACM (OPERATION) Remove the vacuum switching valve for ACM. Check operation of the vacuum switching valve for ACM when battery voltage is applied to the terminals of the vacuum switching valve for ACM connector. Battery voltage is not applied The air from pipe G flows out through pipes E and H. Battery voltage is applied The air from pipe F flows out through pipes E and H. Reinstall the vacuum switching valve for ACM. NG --> See step 8 OK: Go to next step
4. INSPECT VACUUM SWITCHING VALVE FOR ACM (RESISTANCE) Disconnect the vacuum switching valve for ACM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 19 to 21 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Vacuum Switching Valve for ACM) Reconnect the vacuum switching valve for ACM connector. NG --> See step 8 OK: Go to next step
5. INSPECT FRONT ENGINE MOUNTING INSULATOR Disconnect the vacuum hose from the front engine mount insulator assembly. Using a vacuum pump, apply vacuum of 80 kPa (600 mmHg, 25 in.Hg) and wait for 1 minute. Check that there is no change in the needle movement of the vacuum pump gauge. Check that there is no fluid leakage caused by a break in the diaphragm. OK Vacuum does not leak. Reconnect the vacuum hose. NG --> See step 9 OK: Go to next step
6. INSPECT VACUUM SWITCHING VALVE FOR ACM (POWER SOURCE VOLTAGE) Disconnect the vacuum switching valve for ACM 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 *1 Front view of wire harness connector (to Vacuum Switching Valve for ACM) Reconnect the vacuum switching valve for ACM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - VACUUM SWITCHING VALVE FOR ACM) OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE FOR ACM - ECM) Disconnect the vacuum switching valve for ACM 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 TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Vacuum Switching Valve for ACM) *2 Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reconnect the vacuum switching valve for ACM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VACUUM SWITCHING VALVE FOR ACM - ECM) OK --> See step 10
8. REPLACE VACUUM SWITCHING VALVE FOR ACM. Refer to «REMOVAL»(ref-400788-S37149968602011051800000)
9. REPLACE FRONT ENGINE MOUNTING INSULATOR ASSEMBLY. Refer to «REMOVAL»(ref-400788-S08351626792011051800000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

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. 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.

Scheme 74

Scheme 75

Scheme 76

Scheme 77

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

Scheme 83

Scheme 84

Scheme 85

Scheme 86

Scheme 87

Scheme 88

Scheme 89

Scheme 90

Scheme 91

Scheme 92

Scheme 93

Scheme 94

Scheme 95

Scheme 96

Scheme 97

Scheme 98

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). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Trouble Codes. Confirm DTCs and freeze frame data. If any EVAP system DTCs are set, 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 EVAPORATIVE SYSTEM CHECK (AUTO OPERATION) NOTE: The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 18 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the 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 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»(ref-400784-S05337578742011051800000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode. After the EVAP 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 Monitor Confirmation (see «CONFIRMATION DRIVING PATTERN»(ref-400785-S19773251962011051800000) "Diagnostic Help" menu). 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 OPERATION) NOTE: In the Evaporative System Check (Manual Mode), perform the series of 5 Evaporative System Check steps 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 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»(ref-400784-S05337578742011051800000) . Enter the following menus: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode. NEXT: Go to next step
4. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5) Check the EVAP pressure in step 1/5. Result DTC* Test Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure Not yet determined A P0451 EVAP pressure fluctuates by +/-0.3 kPa (2.25 mmHg) or more Canister pressure sensor signal noise B *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. B --> See step 29 A: Go to next step
5. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5 TO 2/5) Check the EVAP pressure in steps 1/5 and 2/5. Result DTC* Test Result Suspected Trouble Area Proceed to - Virtually no variation in EVAP pressure during step 1/5. Then decreases to reference pressure Not yet determined A P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 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 2/5. B --> See step 22 A: Go to next step
6. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/5) HINT: Make a note of the pressures checked in steps A and B below. (a) Check the EVAP pressure 4 seconds after the leak detection pump is activated* (Step A). *: The leak detection pump begins to operate as step 1/5 finishes and step 2/5 starts. (b) Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (Step B). Result DTC* Test Result Suspected Trouble Area Proceed to - EVAP pressure in step B between -4.85 kPa and -1.057 kPa (-36.38 mmHg and -7.93 mmHg) Not yet determined A P043F and P2401 EVAP pressure in step B -1.057 kPa (-7.93 mmHg) or more Reference orifice high-flow Leak detection pump stuck OFF B P043E EVAP pressure in step B below -4.85 kPa (-36.38 mmHg) Reference orifice clogged C P2419 EVAP pressure in step A more than -1.057 kPa (-7.93 mmHg) Vent valve stuck closed D *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. D --> See step 20 C --> See step 29 B --> See step 11 A: Go to next step
7. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/5 TO 3/5) Check the EVAP pressure in step 3/5. Result DTC* Test Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 2/5 to step 3/5 Not yet determined A P2420 No variation in EVAP pressure despite proceeding from step 2/5 to step 3/5 Vent valve stuck open (vent) B P0451 No variation in EVAP pressure during steps 1/5 through 3/5 Canister pressure sensor output value stuck C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. C --> See step 29 B --> See step 19 A: Go to next step
8. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5) Wait until the EVAP pressure change is less than 0.1 kPa (0.75 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 4/5) Check the EVAP pressure in step 4/5. Result DTC* Test Result Suspected Trouble Area Proceed to - EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Not yet determined A P0441 EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Problems in EVAP hose between purge VSV and intake manifold B P0441 Variation in EVAP pressure less than 0.3 kPa (2.25 mmHg) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above. C --> See step 12 B --> See step 15 A: Go to next step
10. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 5/5) Check the EVAP pressure in step 5/5. Compare the EVAP pressure in step 3/5 and the second reference pressure (step 5/5). Result DTC* Test Result Suspected Trouble Area Proceed to - EVAP pressure from step 3/5 lower than second reference pressure (step 5/5) Not yet determined (no leakage from EVAP system) A P0441 and P0455 EVAP pressure from step 3/5 higher than [second reference pressure (step 5/5) x 0.2] Purge VSV stuck open EVAP gross leak B P0456 EVAP pressure from step 3/5 higher than second reference pressure (step 5/5) 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. B --> See step 12 A --> See step 35
11. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5) Check the EVAP pressure in step 3/5. Result DTC* Test Result Suspected Trouble Area Proceed to P043F EVAP pressure less than [reference pressure] measured in step 2/5 Reference orifice high-flow A P2401 EVAP pressure almost same as [reference pressure] measured in step 2/5 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 2/5. B --> See step 22 A --> See step 29
12. 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 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 Purge VSV normal A Suction applied when purge VSV turned off Purge VSV stuck open B No suction when purge VSV turned on Purge VSV stuck closed Problems with EVAP hose between purge VSV and intake manifold C Reconnect the hose. C --> See step 15 B --> See step 14 A: Go to next step
13. CHECK FUEL TANK CAP ASSEMBLY Check that the fuel cap is correctly installed and confirm that the fuel cap meets OEM specifications. Tighten the fuel cap until a few click sounds are 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 (24 to 28 mmHg) using an EVAP tester pump. Seal the adapter and wait for 2 minutes. Check the pressure. If the pressure is 2 kPa (15 mmHg) 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 No fuel cap - C Reinstall the fuel cap. C --> See step 27 B --> See step 26 A --> See step 28
14. 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 ECM A Suction applied Purge VSV B Reconnect the purge VSV connector. Reconnect the hose. B --> See step 30 A --> See step 34
15. 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 A No suction Intake manifold port EVAP hose between purge VSV and intake air surge tank assembly B Reconnect the hose. B --> See step 25 A: Go to next step
16. INSPECT PURGE VSV Remove the purge VSV. Apply battery voltage to the terminals of the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV Using an air gun, confirm that air flows from port A to port B. Result Test Result Condition Suspected Trouble Area Proceed to Air flows Battery voltage is applied to purge VSV terminals Purge VSV normal A No air flow Battery voltage is applied to purge VSV terminals Purge VSV B Install the purge VSV. B --> See step 30 A: Go to next step
17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) Disconnect the purge VSV connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Purge VSV) Result Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to D6-1 - Body ground Engine switch on (IG) 11 to 14 V Normal A Other than result above Wire harness or connectors between purge VSV and ECM B Reconnect the purge VSV connector. B --> See step 31 A: Go to next step
18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) Disconnect the ECM connector and the purge VSV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D6-2 - D1-63 (PRG) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D6-2 or D1-63 (PRG) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Purge VSV) *2 Front view of wire harness connector (to ECM) Reconnect the purge VSV connector. Reconnect the ECM connector. NG --> See step 31 OK --> See step 34
19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) Turn the engine switch off. Disconnect the canister pump module connector. Turn the engine switch 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 between vent valve and ECM Vent valve ECM A Below 3 V Power source wire harness of vent valve B TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Canister Pump Module) Reconnect the canister pump module connector. B --> See step 31 A: Go to next step
20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) Turn the engine switch off. Disconnect the canister pump module connector. Apply battery voltage to the VLVB and VGND terminals of the canister pump module. Touch the canister pump module to confirm the vent valve operation. TEXT IN ILLUSTRATION *1 Component without harness connected (Canister Pump Module) Result Condition Test Result Suspected Trouble Area Proceed to Apply battery voltage to terminals VLVB and VGND Operating 1. Wire harness between vent valve and ECM 2. ECM A Not operating Vent valve B Reconnect the canister pump module connector. B --> See step 29 A: Go to next step
21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) 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 A43-30 (VPMP) - O12-1 (VGND) Always Below 1 ohms ECM A 10 kohms or higher Wire harness between ECM and canister pump module B TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) *2 Front view of wire harness connector (to Canister Pump Module) Reconnect the ECM connector. Reconnect the canister pump module connector. B --> See step 31 A --> See step 34
22. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVE THE VACUUM PUMP) Turn the engine switch off. Disconnect the canister pump module connector. Turn the engine switch 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 11 to 14 V when ON Wire harness between leak detection pump and body ground Leak detection pump A Below 3 V when OFF and ON Wire harness between leak detection pump and ECM ECM B 11 to 14 V when OFF and ON ECM C TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Canister Pump Module) C --> See step 34 B --> See step 24 A: Go to next step
23. 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 between canister pump module and body ground B TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Canister Pump Module) Reconnect the canister pump module connector. B --> See step 31 A --> See step 29
24. 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. Result Tester Connection Condition Test Result Suspected Trouble Area Proceed to A43-49 (MPMP) - O12-3 (MTRB) Always Below 1 ohms ECM A 10 kohms or higher Wire harness between ECM and canister pump module B TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) *2 Front view of wire harness connector (to Canister Pump Module) Reconnect the canister pump module connector. Reconnect the ECM connector. B --> See step 31 A --> See step 34
25. 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 Test Result 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 Reconnect the EVAP hose. B --> See step 33 A --> See step 32
26. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP ASSEMBLY HINT: When reinstalling the fuel cap, tighten it until a few click sounds are heard. When replacing the fuel cap, use a fuel cap that meets OEM specifications, and install it until a few click sounds are heard. NEXT --> See step 36
27. REPLACE FUEL TANK CAP ASSEMBLY HINT: When installing the fuel cap, tighten it until a few click sounds are heard. NEXT --> See step 36
28. LOCATE EVAP LEAK PART Disconnect the vent hose. TEXT IN ILLUSTRATION *1 Fuel Tank *2 Canister *3 Air Filter *4 Fuel Cap *5 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 28 mmHg). Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates the leak point. Repair or replace the leak point. HINT: Disconnect the hose between the canister and 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 36
29. REPLACE CANISTER Replace the canister. Refer to «REMOVAL»(ref-400795-S14536407672011051800000) . 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. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Air Inlet Port *3 Vent Hose *4 Inspection Area (check for disconnection and/or cracks) *5 Fuel Tank - - NEXT --> See step 36
30. REPLACE PURGE VSV Disconnect the connector and the 2 hoses from the purge VSV. TEXT IN ILLUSTRATION *1 Purge VSV Remove the purge VSV. Install a new purge VSV. Reconnect the connector and 2 hoses. NEXT --> See step 36
31. REPAIR OR REPLACE HARNESS OR CONNECTOR NEXT --> See step 36
32. REPLACE EVAP HOSE (INTAKE AIR SURGE TANK ASSEMBLY - PURGE VSV) NEXT --> See step 36
33. 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. NEXT --> See step 36
34. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000) . NEXT --> See step 36
35. 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: Go to next step
36. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) NOTE: The Evaporative System Check (Automatic Mode) consists of 5 steps performed automatically by the Techstream. It takes a maximum of approximately 18 minutes. Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the 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»(ref-400784-S05337578742011051800000) . 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 --> COMPLETED

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.

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

Scheme 99

Scheme 100

Scheme 101

Scheme 102

Scheme 103

Scheme 104

Scheme 105

Scheme 106

Scheme 107

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 D1-81 (E1) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BODY GROUND) OK: Go to next step
2. INSPECT ECM (IGSW VOLTAGE) Disconnect the ECM 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 A43-28 (IGSW) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) Reconnect the ECM connector. NG --> See step 7 OK: Go to next step
3. INSPECT RELAY (EFI MAIN RELAY) Remove the EFI MAIN relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 No battery voltage applied to terminals 1 and 2 10 kohms or higher Battery voltage applied to terminals 1 and 2 Below 1 ohms Reinstall the EFI MAIN relay relay. NG --> REPLACE RELAY (EFI MAIN RELAY) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (EFI MAIN RELAY) Remove the EFI MAIN relay from the engine room relay block. 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 3 (EFI MAIN relay terminal) - A43-3 (+B) Always Below 1 ohms 3 (EFI MAIN relay terminal) - A43-2 (+B2) Always Below 1 ohms 1 (EFI MAIN relay terminal) - A43-34 (MREL) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 3 (EFI MAIN relay terminal) or A43-3 (+B) - Body ground Always 10 kohms or higher 3 (EFI MAIN relay terminal) or A43-2 (+B2) - Body ground Always 10 kohms or higher 1 (EFI MAIN relay terminal) or A43-34 (MREL) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reinstall the EFI MAIN relay block assembly. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI MAIN RELAY - ECM) OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (BATTERY - EFI MAIN RELAY) Remove the EFI MAIN relay from the engine room relay block. Disconnect the cable from the negative (-) battery terminal. Disconnect the cable from the positive (+) battery terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 5 (EFI MAIN relay terminal) - Battery positive (+) terminal Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 5 (EFI MAIN relay terminal) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Engine Room Relay Block Reinstall the EFI MAIN relay. Reconnect the cable to the positive (+) battery terminal. Reconnect the cable to the negative (-) battery terminal. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - EFI MAIN RELAY) OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (EFI MAIN RELAY - BODY GROUND) Remove the EFI MAIN relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2 (EFI MAIN relay terminal) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Engine Room Relay Block Reinstall the EFI MAIN relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI MAIN RELAY - BODY GROUND) OK --> See step 12
7. INSPECT RELAY (IG2 RELAY) Remove the IG2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 No battery voltage applied to terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 ohms Reinstall the IG2 relay. NG --> REPLACE RELAY (IG2 RELAY) OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (IG2 RELAY - ECM) Remove the IG2 relay from the engine room relay block. 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 3 (IG2 relay terminal) - A43-28 (IGSW) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 3 (IG2 relay terminal) or A43-28 (IGSW) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 Front view of wire harness connector (to ECM) Reinstall the IG2 relay. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - ECM) OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (IG2 RELAY POWER SOURCE) Remove the IG2 relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 5 (IG2 relay terminal) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block Reinstall the IG2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - BATTERY) OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND) Remove the IG2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 2 (IG2 relay terminal) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Engine Room Relay Block Reinstall the IG2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - BODY GROUND) OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (IG2 RELAY - POWER MANAGEMENT CONTROL ECU) Disconnect the power management control ECU connector. Remove the IG2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 1 (IG2 relay terminal) - F7-8 (IG2D) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 1 (IG2 relay terminal) - F7-8 (IG2D) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Management Control ECU) *2 Engine Room Relay Block Reconnect the power management control ECU connector. Reinstall the IG2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - POWER MANAGEMENT CONTROL ECU) OK --> See step 13
12. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S08835480482011051800000)
13. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400655-S07935767892011051800000)

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 108

Scheme 109

Scheme 110

Scheme 111

Scheme 112

Scheme 113

Scheme 114

Scheme 115

1. CHECK FUEL PUMP OPERATION Check the fuel pump operation. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-400801-S28367752752011051800000) . NG --> See step 5 OK: Go to next step
2. INSPECT RELAY (F/PMP RELAY) Remove the F/PMP relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 4 No battery voltage applied to terminals 1 and 2 Below 1 ohms 3 - 4 Battery voltage applied to terminals 1 and 2 10 kohms or higher 3 - 5 No battery voltage applied to terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 ohms Reinstall the F/PMP relay. NG --> REPLACE RELAY (F/PMP RELAY) OK: Go to next step
3. INSPECT FUEL PUMP RESISTOR Disconnect the fuel pump resistor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 0.30 to 0.34 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (Fuel Pump Resistor) Reconnect the fuel pump resistor connector. NG --> See step 14 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (F/PMP RELAY - FUEL PUMP RESISTOR) Remove the F/PMP relay from the engine room relay block. Disconnect the fuel pump resistor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 5 (F/PMP relay) - A15-1 Always Below 1 ohms 4 (F/PMP relay) - A15-2 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 5 (Fuel pump relay) or A15-1 - Body ground Always 10 kohms or higher 4 (Fuel pump relay) or A15-2 - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Fuel Pump Resistor) *2 Engine Room Relay Block Reinstall the F/PMP relay. Reconnect the fuel pump resistor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (F/PMP RELAY - FUEL PUMP RESISTOR) OK --> See step 15
5. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CIRCUIT OPENING RELAY) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Activate the Fuel Pump Speed Control. Check the operation of the relay while operating it using the Techstream. OK Operating noise can be heard from the relay. NG --> See step 11 OK: Go to next step
6. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION»(ref-400791-S02106734512011051800000) . NG --> See step 16 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (FUEL PUMP - F/PMP RELAY) Disconnect the fuel pump connector. Remove the F/PMP relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition P11-4 - 4 (F/PMP relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition P11-4 or 4 (F/PMP relay terminal) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Fuel Pump) *2 Engine Room Relay Block Reinstall the F/PMP relay. Reconnect the fuel pump connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PUMP - F/PMP RELAY) OK: Go to next step
8. INSPECT ENGINE ROOM RELAY BLOCK (C/OPN RELAY - F/PMP RELAY) Remove the C/OPN relay from the engine room relay block. Remove the F/PMP relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 3 (C/OPN relay) - 2 (F/PMP relay terminal) Always Below 1 ohms 3 (C/OPN relay) - 3 (F/PMP relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 3 (C/OPN relay) or 2 (F/PMP relay terminal) - Body ground Always 10 kohms or higher 3 (C/OPN relay) or 3 (F/PMP relay terminal) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Engine Room Relay Block Reinstall the C/OPN relay. Reinstall the F/PMP relay. NG --> REPLACE ENGINE ROOM RELAY BLOCK OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (FUEL PUMP - BODY GROUND) Disconnect the fuel pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition P11-5 - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Fuel Pump) Reconnect the fuel pump connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PUMP - BODY GROUND) OK: Go to next step
10. CHECK FUEL LINE Check the fuel lines for leaks or blockage. OK No leaks or blockage NG --> REPAIR OR REPLACE FUEL LINE OK --> REPAIR OR REPLACE FUEL SYSTEM (PRESSURE REGULATOR AND FUEL FILTER)
11. INSPECT RELAY (C/OPN RELAY) Remove the C/OPN relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 No battery voltage applied to terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 ohms Reinstall the C/OPN relay. NG --> REPLACE RELAY (C/OPN RELAY) OK: Go to next step
12. CHECK HARNESS AND CONNECTOR (C/OPN RELAY VOLTAGE) Remove the C/OPN relay from the engine room relay block. 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 5 (C/OPN relay terminal) - Body ground Engine switch on (IG) 11 to 14 V 1 (C/OPN relay terminal) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block Reinstall the C/OPN relay. NG --> REPLACE ENGINE ROOM RELAY BLOCK OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (C/OPN RELAY - ECM) Remove the C/OPN relay from the engine room relay block. 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 2 (C/OPN relay terminal) - A43-52 (FC) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 2 (C/OPN relay terminal) or A43-52 (FC) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to ECM) *2 Engine Room Relay Block Reconnect the ECM connector. Reinstall the C/OPN relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (C/OPN RELAY - ECM) OK --> See step 17
14. REPLACE FUEL PUMP RESISTOR. Refer to «REMOVAL»(ref-400791-S25843990762011051800000)
15. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S08835480482011051800000)
16. REPLACE FUEL PUMP. Refer to «REMOVAL»(ref-400791-S26326872392011051800000)
17. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

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 116

Scheme 117

Scheme 118

1. CHECK FUEL INJECTOR ASSEMBLY (POWER SOURCE) Disconnect the fuel injector 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 D13-2 - Body ground Engine switch on (IG) 11 to 14 V D14-2 - Body ground Engine switch on (IG) 11 to 14 V D15-2 - Body ground Engine switch on (IG) 11 to 14 V D16-2 - Body ground Engine switch on (IG) 11 to 14 V D17-2 - Body ground Engine switch on (IG) 11 to 14 V D18-2 - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Fuel Injector Assembly) Reconnect the fuel injector assembly connector. NG --> See step 4 OK: Go to next step
2. INSPECT FUEL INJECTOR ASSEMBLY Inspect the fuel injector assembly. Refer to «INSPECTION»(ref-400791-S21918100082011051800000) . NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector 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 D13-1 - D1-86 (#10) Always Below 1 ohms D14-1 - D1-109 (#20) Always Below 1 ohms D15-1 - D1-85 (#30) Always Below 1 ohms D16-1 - D1-108 (#40) Always Below 1 ohms D17-1 - D1-84 (#50) Always Below 1 ohms D18-1 - D1-107 (#60) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D13-1 or D1-86 (#10) - Body ground Always 10 kohms or higher D14-1 or D1-109 (#20) - Body ground Always 10 kohms or higher D15-1 or D1-85 (#30) - Body ground Always 10 kohms or higher D16-1 or D1-108 (#40) - Body ground Always 10 kohms or higher D17-1 or D1-84 (#50) - Body ground Always 10 kohms or higher D18-1 or D1-107 (#60) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Fuel Injector Assembly) *2 Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) OK --> See step 6
4. CHECK HARNESS AND CONNECTOR (IG2 RELAY - FUEL INJECTOR ASSEMBLY) Disconnect the fuel injector assembly connector. Remove the IG2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D13-2 - 3 (IG2 relay terminal) Always Below 1 ohms D14-2 - 3 (IG2 relay terminal) Always Below 1 ohms D15-2 - 3 (IG2 relay terminal) Always Below 1 ohms D16-2 - 3 (IG2 relay terminal) Always Below 1 ohms D17-2 - 3 (IG2 relay terminal) Always Below 1 ohms D18-2 - 3 (IG2 relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D13-2 or 3 (IG2 relay terminal) - Body ground Always 10 kohms or higher D14-2 or 3 (IG2 relay terminal) - Body ground Always 10 kohms or higher D15-2 or 3 (IG2 relay terminal) - Body ground Always 10 kohms or higher D16-2 or 3 (IG2 relay terminal) - Body ground Always 10 kohms or higher D17-2 or 3 (IG2 relay terminal) - Body ground Always 10 kohms or higher D18-2 or 3 (IG2 relay terminal) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Fuel Injector Assembly) *2 Engine Room Relay Block Reinstall the IG2 relay. Reconnect the fuel injector assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 RELAY - FUEL INJECTOR ASSEMBLY) OK --> See step 7
5. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-400791-S26062819322011051800000)
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S08835480482011051800000)
7. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-400785-S30420739032011051800000)

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.

HINT

This diagnosis procedure is based on the premise that the engine can crank normally. If the engine cannot crank normally, proceed to the Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

Scheme 119

Scheme 120

Scheme 121

Scheme 122

Scheme 123

1. READ VALUE USING TECHSTREAM (STARTER SIGNAL) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Starter Signal. Read the value displayed on the Techstream when the engine switch is turned on (IG) and the engine is started. OK Condition Tester Display Engine switch on (IG) OFF Engine started ON NG --> See step 2 OK --> See step 8
2. CHECK ST RELAY (POWER SOURCE) Remove the ST relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2 (ST relay terminal) - Body ground Engine cranking position 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block HINT: The engine will not crank because the relay is not installed. Reinstall the ST relay. NG --> See step 3 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH)
3. CHECK HARNESS AND CONNECTOR (ST RELAY - PARK/NEUTRAL POSITION SWITCH) Remove the ST relay from the engine room relay block. Disconnect the park/neutral position switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 1 (ST relay terminal) - D8-9 Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 1 (ST relay terminal) or D8-9 - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Park/Neutral Position Switch) *2 Engine Room Relay Block Reinstall the ST relay. Reconnect the park/neutral position switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - PARK/NEUTRAL POSITION SWITCH) OK: Go to next step
4. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Inspect the park/neutral position switch assembly. Refer to «INSPECTION»(ref-400804-S21585830502011051800000) . NG --> See step 9 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - ECM) Disconnect the power management control ECU 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 F7-3 (STAR) - D1-120 (NSW) Always Below 1 ohms Standard Resistance (Check for Open) Tester Connection Condition Specified Condition F7-3 (STAR) or D1-120 (NSW) - body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Power Management Control ECU) *2 Front view of wire harness connector (to ECM) Reconnect the power management control ECU connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - ECM) OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - POWER MANAGEMENT CONTROL ECU) Disconnect the park/neutral position switch connector. Disconnect the power management control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition D8-4 - F7-3 (STAR) Always Below 1 ohms D8-9 - F7-2 (STA) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D8-4 or F7-3 (STAR) - Body ground Always 10 kohms or higher D8-9 or F7-2 (STA) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Park/Neutral Position Switch) *2 Front view of wire harness connector (to Power Management Control ECU) Reconnect the power management control ECU connector. Reconnect the park/neutral position switch connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - POWER MANAGEMENT CONTROL ECU) OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) Disconnect the ECM connector. Disconnect the park/neutral position switch connector. Remove the ST relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D8-9 or A43-46 (STA) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Park/Neutral Position Switch) *2 Front view of wire harness connector (to ECM) Reconnect the ECM connector. Reconnect the park/neutral position switch connector. Reinstall the ST relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM) OK --> See step 10
8. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S08835480482011051800000)
9. REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to «REMOVAL»(ref-400804-S11330629472011051800000)
10. GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400655-S07935767892011051800000)

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

HINT

This diagnosis procedure is based on the premise that the engine can crank normally. If the engine cannot crank normally, proceed to the Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

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

Scheme 124

Scheme 125

Scheme 126

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) Disconnect the intake air control valve assembly connector. Apply battery voltage between the terminals of the intake air control valve assembly connector. TEXT IN ILLUSTRATION *1 Component without harness connected (Intake Air Control Valve Assembly) Check the intake air control valve assembly operation. OK Operating noise can be heard. Reconnect the intake air control valve assembly connector. 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 *1 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 TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Intake Air Control Valve Assembly) *2 Front view of wire harness connector (to ECM) 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»(ref-400784-S08835480482011051800000)
6. REPLACE INTAKE AIR SURGE TANK ASSEMBLY. Refer to «REMOVAL»(ref-400802-S19437195772011051800000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

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 127

Scheme 128

Scheme 129

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 6
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»(ref-400802-S24001717282011051800000) . 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 *1 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 TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Vacuum Switching Valve for Air Intake Control Valve) *2 Front view of wire harness connector (to ECM) 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»(ref-400802-S08852924272011051800000) . NG --> REPAIR OR REPLACE AIR CLEANER CAP SUB-ASSEMBLY OK --> See step 7
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400784-S08835480482011051800000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-400788-S26250166532011051800000)

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