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

CONDITIONING FOR SENSOR TESTING

Perform the operation with the engine speeds and time durations described below prior to checking the waveforms of the A/F and HO2 sensors. This is performed in order to heat the sensors sufficiently to obtain the appropriate inspection results.

Scheme 87

1. (a) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) and connect the Techstream to the DLC3.
2. (b) Warm it up with all the accessories switched off, until the engine coolant temperature stabilizes.
3. (c) Run the engine at an engine speed of between 2000 rpm and 2500 rpm for at least 3 minutes.
4. (d) While running the engine at 2500 rpm and 1500 rpm alternating at 2 second intervals, check the waveforms of the A/F and HO2 sensors using the Techstream.

HINT

1. If either voltage output of the Air-Fuel Ratio (A/F) or Heated Oxygen (HO2) sensor does not fluctuate, or there is a noise in the waveform of either sensor the sensor may be malfunctioning.
2. If the voltage outputs of both the sensors remain lean or rich, the air-fuel ratio may be extremely lean or rich. In such cases, perform the following Control the Injection Volume for A/F Sensor using the Techstream.
3. If the Three-Way Catalytic Converter (TWC) has deteriorated, the HO2 sensor (located behind the TWC) voltage output fluctuates up and down frequently, even under normal driving conditions (active air-fuel ratio control is not performed).

Scheme 88

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. Refer to FREEZE FRAME DATA .

Scheme 89

Scheme 90

Scheme 91

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0420 AND/OR P0430) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to P0420 and/or P0430 A P0420 and/or P0430 and other DTCs B HINT: If any DTCs other than P0420 or P0430 are output, troubleshoot those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. On the Techstream, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor. Perform the Control the Injection Volume for A/F sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the injection volume). Monitor the voltage outputs of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream. Result A/F sensor reacts in accordance with increases and decreases in fuel injection volume: +25% = Rich output Less than 3.1 V -12.5% = Lean output More than 3.4 V NOTE: The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) 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 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich) Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the output voltages of both the A/F and HO2 sensors. To display the graph, enter the following menus on the Techstream: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor / AFS Voltage B1S1 and O2S B1S1 or AFS Voltage B2S1 and O2S B2S2; then press the graph button on the Data List view. Result Result Proceed to Case 1 A Case 2 B Case 3 C Case 4 D D --> CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO, REPAIR CAUSE, AND GO TO NEXT STEP C --> See step 7 B --> REPLACE AIR FUEL RATIO SENSOR A: Go to next step
3. CHECK FOR EXHAUST GAS LEAK OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
4. CHECK DTC OUTPUT (DTC P0420 AND/OR P0430) According to the DTCs output in the Check Any Other DTCs Output step, proceed to the next step according to the table below. Result Display (DTC output) Proceed to P0420 A, C P0430 B, C P0420 and P0430 A, B, C B --> See step 6 A --> See step 5 C --> See step 8
5. REPLACE EXHAUST MANIFOLD SUB-ASSEMBLY RH (TWC: FRONT CATALYST). Refer to «REMOVAL - Step 55»(ref-387075-S29773902432011022400000)
6. REPLACE EXHAUST MANIFOLD SUB-ASSEMBLY LH (TWC: FRONT CATALYST). Refer to «REMOVAL - Step 54»(ref-387075-S29773902432011022400000)
7. CHECK FOR EXHAUST GAS LEAKAGE OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK --> REPLACE HEATED OXYGEN SENSOR
8. REPLACE FRONT EXHAUST PIPE ASSEMBLY (TWC: REAR CATALYST). Refer to «COMPONENTS»(ref-386949-S19886542872011022400000)

DTC SUMMARY

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

HINT

The canister pressure sensor is built into the canister pump module.

Note. When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel tank cap. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 92

Scheme 93

Scheme 94

Scheme 95

1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the power switch on (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / Vapor Pressure Pump. Read the EVAP (Evaporative Emission) pressure displayed on the Techstream. Result Display (DTC Output) Test Result Suspected Trouble Area Proceed to P0451 - Canister pressure sensor C P0452 Less than 45 kPa (337 mmHg) Wire harness/connector (ECM - canister pressure sensor) Canister pressure sensor Short in ECM circuit A P0453 More than 120 kPa (900 mmHg) Wire harness/connector (ECM - canister pressure sensor) Canister pressure sensor Open in ECM circuit B C --> GO TO THE APPROPRIATE EVAP SYSTEM SERVICE INFORMATION B --> See step 4 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the power switch off. Disconnect the A53 ECM connector. Measure the resistance between the PPMP terminal of the ECM connector and the body ground. Result Test Result Suspected Trouble Area Proceed to 10 ohms or less Wire harness/connector (ECM - canister pressure sensor) Short in canister pressure sensor circuit A 10 kohms or more Wire harness/connector (ECM - canister pressure sensor) Short in ECM circuit B Reconnect the ECM connector. B --> See step 7 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Disconnect the A53 ECM connector. Measure the resistance between the PPMP terminal of the ECM connector and the body ground. Result Test Result Suspected Trouble Area Proceed to 10 kohms or more Short in canister pressure sensor circuit A 10 ohms or less Short in wire harness/connector (ECM - canister pressure sensor) B Reconnect the canister pump module connector. Reconnect the ECM connector. B --> See step 6 A --> See step 5
4. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Turn the power switch on (IG). Measure the voltage and resistance of the canister pump mpdule connector and body ground. Standard: W/O ACTIVE STABILIZER Tester Connection Specified Condition VCC (V17-4) - Body ground 4.5 to 5.0 V VOUT (V17-3) - Body ground 4.5 to 5.0 V SGND (V17-2) - Body ground 100 ohms or less W/ ACTIVE STABILIZER Tester Connection Specified Condition VCC (x1-4) - Body ground 4.5 to 5.0 V VOUT (x1-3) - Body ground 4.5 to 5.0 V SGND (x1-2) - Body ground 100 ohms or less Result Test Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - canister pressure sensor) B Reconnect the canister pump module connector. B --> See step 6 A --> See step 5
5. REPLACE CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(ref-387090-S36738945712011022400000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the hose from the canister to the fuel tank. NEXT --> See step 8
6. REPAIR OR REPLACE HARNESS OR CONNECTOR HINT: If the tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 8
7. REPLACE ECM Replace ECM. Refer to «REMOVAL - Step 7»(ref-387086-S06499058262011022400000) . NEXT --> See step 8
8. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Wait for at least 60 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTC is displayed on the Techstream, the repair has been successfully completed. NEXT --> COMPLETED

HINT

1. The following conditions may also cause DTC P0505 to be set: The floor carpet overlapping onto the accelerator pedal, causing the accelerator pedal to be slightly depressed and therefore the throttle valve position to be slightly open. The accelerator pedal being not fully released.
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. Refer to «FREEZE FRAME DATA»(ref-387083-S30119540122011022400000) .

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.

HINT

1. DTC P050B may be set when the engine shows the symptom as listed below. If necessary, check the trouble area as listed below. Symptoms Factor Trouble Area Low idle speed at engine cold. Excessive engine friction Engine oil deterioration Drive belt tension Rough idle at engine cold. Abnormal combustion Fuel quality
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.

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. Refer to FREEZE FRAME DATA .

Scheme 96

Scheme 97

1. CHECK FUSE (EFI FUSE) Remove the EFI fuse from the engine room No. 1 junction block. Measure the resistance of the EFI fuse. Standard resistance Below 1 ohms Reinstall the EFI fuse. NG --> CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - EFI FUSE, EFI FUSE - BATTERY) Check the harness and the connector between the EFI fuse and ECM. Remove the EFI fuse from the engine room No. 1 junction block. Disconnect the A53 ECM connector. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition EFI fuse (2) - BATT (A53-20) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition EFI fuse (2) or BATT (A53-20) - Body ground 10 kohms or higher Reconnect the ECM connector. Reinstall the EFI fuse. Check the harness and the connector between the EFI fuse and battery. Remove the EFI fuse from the engine room No. 1 junction block. Disconnect the positive battery terminal. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition Battery positive terminal - EFI fuse (1) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition Battery positive terminal or EFI fuse (1) - Body ground 10 kohms or higher Reconnect the positive battery terminal. Reinstall the EFI fuse. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT BATTERY Check that the battery is not depleted. OK Battery is not depleted NG --> REPLACE BATTERY OK: Go to next step
4. CHECK BATTERY TERMINAL Check that the battery terminals are not loose or corroded. OK Battery terminals are not loose or corroded NG --> REPAIR OR REPLACE BATTERY TERMINAL OK: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the power switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Turn the power switch off and turn the Techstream off. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P0560 A No output B B --> CHECK FOR INTERMITTENT PROBLEMS A --> REPLACE ECM

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.

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. Refer to FREEZE FRAME DATA .

Scheme 98

Scheme 99

Scheme 100

1. INSPECT FUEL PUMP FOR HIGH PRESSURE Disconnect the E73 fuel pump for high pressure connector. Measure the resistance of the fuel pump for high pressure. Standard resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 1.19 to 1.39 ohms Reconnect the fuel pump for high pressure connector. NG --> REPLACE FUEL PUMP FOR HIGH PRESSURE OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER - FUEL PUMP FOR HIGH PRESSURE) Disconnect the E54 injector driver (EDU) connector. Disconnect the E73 fuel pump for high pressure connector. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition FP+ (E54-3) - E73-1 Below 1 ohms FP- (E54-4) - E73-2 Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition FP+ (E54-3) or E73-1 - Body ground 10 kohms or higher FP- (E54-4) or E73-2 - Body ground 10 kohms or higher Reconnect the injector driver (EDU) connector. Reconnect the fuel pump for high pressure connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER - ECM) Disconnect the E83 ECM connector. Disconnect the E53 injector driver (EDU) connector. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition FPF1 (E83-52) - FPF1 (E53-7) Below 1 ohms FPD (E83-53) - FPD (E53-8) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition FPF1 (E83-52) or FPF1 (E53-7) - Body ground 10 kohms or higher FPD (E83-53) or FPD (E53-8) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE INJECTOR DRIVER NEXT: Go to next step
5. CHECK DTC OUTPUT Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000) . Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to No output A P1235 B B --> REPLACE ECM A --> END

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Scheme 101

1. P1420: EVAP (Evaporative Emission) small leak In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than the second reference pressure, the ECM determines that the EVAP system has a small leakage, illuminates the MIL and sets the DTC (2 trip detection logic).
2. P1421: EVAP very gross leak In operation C, the leak detection pump creates negative pressure (vacuum) in the EVAP system and the EVAP system pressure is measured. If the stabilized system pressure is higher than [second reference pressure x 0.2] (near atmospheric pressure), the ECM determines that the EVAP system has a large leakage, illuminates the MIL and sets the DTC (2 trip detection logic).

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Scheme 102

1. P1422: Fuel tank very small leak In operation G, the leak detection pump creates negative pressure (vacuum) in the fuel tank and the fuel tank pressure is measured. If the stabilized system pressure is higher than the third reference pressure, the ECM determines that the fuel tank has a small leakage. The ECM illuminates the MIL and sets the DTC (2 trip detection logic).
2. P1423: Fuel tank gross leak In operation G, the leak detection pump creates negative pressure (vacuum) in the fuel tank and the fuel tank pressure is measured. If the stabilized system pressure is higher than [third reference pressure x 0.2] (near atmospheric pressure), the ECM determines that the fuel tank has a large leakage. The ECM illuminates the MIL and sets the DTC (2 trip detection logic).

Note. When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condition. For example, do not tighten the fuel tank cap. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 103

Scheme 104

Scheme 105

1. CONFIRM DTC AND FUEL TANK PRESSURE Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / Vapor Pressure Tank. Read the EVAP (Evaporative Emission) pressure displayed on the Techstream. Result Display (DTC Output) Test Result Suspected Trouble Area Proceed to P1451 - Pressure sensor C P1452 Less than -17.187 kPa (-128.93 mmHg) Wire harness/connector (ECM - pressure sensor) Pressure sensor Short in ECM circuit A P1453 More than 23.5 kPa (176.69 mmHg) Wire harness/connector (ECM - pressure sensor) Pressure sensor Open in ECM circuit B C --> GO TO THE APPROPRIATE EVAP SYSTEM SERVICE INFORMATION B --> See step 4 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (FUEL TANK PRESSURE SENSOR - ECM) Turn the power switch off. Disconnect the A53 ECM connector. Measure the resistance between the PTNK terminal of the ECM connector and the body ground. Result Test Result Suspected Trouble Area Proceed to 10 ohms or less Wire harness/connector (ECM - pressure sensor) Short in pressure sensor circuit A 10 kohms or more Wire harness/connector (ECM - pressure sensor) Short in ECM circuit B Reconnect the ECM connector. B --> See step 7 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (FUEL TANK PRESSURE SENSOR - ECM) Remove the fuel tank assembly. Disconnect the e1 fuel tank pressure sensor connector. Disconnect the A53 ECM connector. Measure the resistance between the PTNK terminal of the ECM connector and the body ground. Result Test Result Suspected Trouble Area Proceed to 10 kohms or more Short in pressure sensor circuit A 10 ohms or less Short in wire harness/connector (ECM - pressure sensor) B Reconnect the pressure sensor connector. Reconnect the ECM connector. B --> See step 6 A: Go to next step
4. CHECK HARNESS AND CONNECTOR (FUEL TANK PRESSURE SENSOR - BODY GROUND) Remove the fuel tank assembly. Disconnect the e1 fuel tank pressure sensor connector. Turn the power switch on (IG). Measure the voltage and resistance between the terminal of the wire harness side connector and body ground. Standard Tester Connection Specified Condition VC (e1-3) - Body ground 4.5 to 5.0 V E2 (e1-1) - Body ground 100 ohms or less Result Test Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - pressure sensor) B Reconnect the canister connector. B --> See step 6 A: Go to next step
5. REPLACE FUEL TANK PRESSURE SENSOR NEXT --> See step 8
6. REPAIR OR REPLACE HARNESS OR CONNECTOR HINT: If the tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 8
7. REPLACE ECM NEXT --> See step 8
8. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect Techstream to the DLC3. Turn the power switch ON (IG) and turn the tester ON. Wait for at least 60 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTC is displayed on the tester, the repair has been successfully completed. NEXT --> COMPLETED

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 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 «FREEZE FRAME DATA»(ref-387083-S30119540122011022400000) .

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

Scheme 106

Scheme 107

1. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the E39 throttle body connector. Measure the resistance of the throttle actuator. Standard resistance Tester Connection Condition Specified Condition M+ (2) - M- (1) 20°C (68°F) 0.3 to 100 ohms Reconnect the throttle body connector. NG --> REPLACE THROTTLE BODY ASSEMBLY OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE ACTUATOR - ECM) Disconnect the E39 throttle body connector. Disconnect the E83 ECM connector. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition M+ (E39-2) - M+ (E83-19) Below 1 ohms M- (E39-1) - M- (E83-18) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition M+ (E39-2) or M+ (E83-19) - Body ground 10 kohms or higher M- (E39-1) or M- (E83-18) - Body ground 10 kohms or higher Reconnect the throttle body connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) Check for foreign objects between the throttle valve and the housing. OK No foreign objects between throttle valve and housing. NG --> REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY OK: Go to next step
4. INSPECT THROTTLE VALVE Check if the throttle valve opens and closes smoothly. OK Throttle valve opens and closes smoothly. NG --> REPLACE THROTTLE BODY ASSEMBLY OK --> REPLACE ECM

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. Refer to FREEZE FRAME DATA .

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. Refer to FREEZE FRAME DATA .

Scheme 108

Scheme 109

Scheme 110

1. READ VALUE USING TECHSTREAM (+BM VOLTAGE) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) . Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / +BM Voltage. Read the value displayed on the Techstream. Standard voltage 9 to 14 V OK --> See step 5 NG: Go to next step
2. CHECK FUSE (ETCS FUSE) Remove the ETCS fuse from the engine room No. 1 junction block. Measure the resistance of the ETCS fuse. Standard resistance Below 1 ohms Reinstall the ETCS fuse. NG --> CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - ETCS FUSE, ETCS FUSE - BATTERY) Check the harness and connector between the ETCS fuse and ECM. Remove the ETCS fuse from the engine room No. 1 junction block. Disconnect the E83 ECM connector. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition ETCS fuse (2) - +BM (E83-20) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition ETCS fuse (2) or +BM (E83-20) - Body ground 10 kohms or higher Reinstall the ETCS fuse. Reconnect the ECM connector. Check the harness and connector between the ETCS fuse and positive battery cable. Remove the ETCS fuse from the engine room No. 1 junction block. Disconnect the positive battery cable. Measure the resistance. Standard resistance (Check for open) Tester Connection Specified Condition Positive battery cable - ETCS fuse (1) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition Positive battery cable or ETCS fuse (1) - Body ground 10 kohms or higher Reinstall the ETCS fuse. Reconnect the positive battery cable. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT ECM (+BM VOLTAGE) Disconnect the E83 ECM connectors. Measure the voltage between the terminals of the ECM connectors. Standard voltage Tester Connection Specified Condition +BM (E83-20) - E1 (E83-104) 9 to 14 V Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (TERMINAL E1 - BODY GROUND) OK --> REPLACE ECM
5. INSPECT BATTERY Check that the battery is not depleted. OK Battery is not depleted NG --> REPLACE BATTERY OK: Go to next step
6. CHECK BATTERY TERMINAL Check that the battery terminals and ECM ground are not loose or corroded. OK Battery terminals and ECM ground are not loose or corroded NG --> REPAIR OR REPLACE BATTERY TERMINAL OK --> CHECK FOR INTERMITTENT PROBLEMS

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. Refer to FREEZE FRAME DATA .

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F sensor function provided in the Active Test. The Control the Injection Volume for A/F sensor function can help to determine whether the Air-fuel Ratio (A/F) sensor, Heated Oxygen (HO2) 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. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) .
2. Connect the Techstream to the DLC3.
3. Turn the Techstream on.
4. Warm up the engine.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Control the Injection Volume for A/F sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the injection volume).
7. Monitor the output voltages of the A/F and HO2 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%.
2. Each sensor reacts in accordance with increases in the injection volume.

Note. The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the HO2S (sensor 2) output has a maximum output delay of 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 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
2. To display the graph, enter the following menus on the Techstream: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2; then press the graph button on the Data List view.

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 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 «FREEZE FRAME DATA»(ref-387083-S30119540122011022400000) .
2. A low A/F 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 A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.

Scheme 111

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195, P2196, 2197 OR P2198) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P2195, P2196, P2197 or P2198 A P2195, P2196, P2197 or P2198 and other DTCs B HINT: If any DTCs other than P2195, P2196, P2197 or P2198 are output, troubleshoot those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. READ VALUE USING TECHSTREAM Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000). Connect the Techstream to the DLC3. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387083-S04846376252011022400000). Allow the vehicle to drive in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2S Sensor. Check the status of O2 Sensor is Complete. If the status is still Incomplete, drive the vehicle according to the driving pattern again. HINT: Complete indicates that the component is functioning normally. Incomplete indicates that the component is malfunctioning. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details / RANGE B1 S1 / Details; then press the Enter button. Check the test value of the A/F sensor output current during fuel-cut. Result Test Value Proceed to Within normal range (1.0 mA or more, and less than 3.6 mA) A Outside normal range (Less than 1.0 mA or 3.6 mA or more) B B --> See step 15 A: Go to next step
3. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF CONTROL THE INJECTION VOLUME FOR A/F SENSOR) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000). Connect the Techstream to the DLC3. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / AFS Voltage B1S1 or AFS Voltage B2S1 and Engine Speed. Check the A/F sensor voltage three times, when the engine is in each of the following conditions: While idling (check for at least 30 seconds) Accelerator pedal released. Fully depress the accelerator pedal and run the engine at 2500 rpm. Standard voltage Condition A/F Sensor Voltage Variation Reference (1) and (2) Changes at approximately 3.3 V Between 3.1 V and 3.4 V (3) Increases to 3.8 V or more This occurs during engine deceleration (when fuel-cut performed) HINT: For more information, see the diagrams below. If the output voltage of the A/F sensor remains at approximately 3.3 V (see Malfunction Condition diagram. see scheme 47) under any conditions, including those above, the A/F sensor may have an open circuit. (This will also happen if the A/F sensor heater has an open circuit.) If the output voltage of the A/F sensor remains at either approximately 3.8 V or more, or 2.8 V or less (see Malfunction Condition diagram. see scheme 47) under any conditions, including those above, the A/F sensor may have a short circuit. The ECM stops fuel injection (fuel cut) during engine deceleration. This causes a lean condition and results in a momentary increase in the A/F sensor output voltage. The ECM must establish a closed throttle valve position learning value to perform fuel cut. If the battery terminal has been reconnected, the vehicle must be driven over 10 mph (16 km/h) to allow the ECM terminal to be reconnected, the vehicle must be driven at over 10 mph (16 km/h) to allow the ECM to learn the closed throttle valve position. When the vehicle is driven: The output voltage of the A/F sensor may be below 2.8 V during fuel enrichment. For the vehicle, this translates to a sudden increase in speed with the accelerator pedal fully depressed when trying to overtake another vehicle. The A/F sensor is functioning normally. The A/F sensor is a current output element; therefore, the current is converted into a voltage inside the ECM. Measuring the voltage at the connectors of the A/F sensor or ECM will show a constant voltage result. NG --> See step 9 OK: Go to next step
4. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) Read DTCs using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Result Display (DTC Output) Proceed to P2195, P2196, P2197 or P2198 A No output B B --> END A: Go to next step
6. REPLACE AIR FUEL RATIO SENSOR NEXT: Go to next step
7. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) Read DTCs using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Result Display (DTC Output) Proceed to No output A P2195, P2196, P2197 or P2198 B B --> REPLACE ECM A --> END
9. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE). Refer to «PROCEDURE - Step 1»(ref-387087-S33503654812011022400000) NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
10. INSPECT INTEGRATION NO. 1 RELAY (A/F RELAY). Refer to «PROCEDURE - Step 3»(ref-387087-S33503654812011022400000) NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM). Refer to «PROCEDURE - Step 5»(ref-387087-S33503654812011022400000) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. REPLACE AIR FUEL RATIO SENSOR NEXT: Go to next step
13. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
14. CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) Read DTCs using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Result Display (DTC Output) Proceed to No output A P2195, P2196, P2197 or P2198 B B --> REPAIR OR REPLACE ECM A --> END
15. REPLACE AIR FUEL RATIO SENSOR NEXT: Go to next step
16. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
17. CHECK WHETHER DTC OUTPUT RECURS (DTC P2195, P2196, P2197 OR P2198) Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000). Connect the Techstream to the DLC3. Turn the Techstream on. Read DTCs using Techstream. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Result Display (DTC Output) Proceed to No output A P2195, P2196, P2197 or P2198 (A/F sensor pending DTCs) B B --> REPLACE ECM A --> END

HINT

Techstream only

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F sensor function provided in the Active Test. The Control the Injection Volume for A/F sensor function can help to determine whether the Air-Fuel Ratio (A/F) sensor, Heated Oxygen (HO2) 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. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) .
2. Connect the Techstream to the DLC3.
3. Turn the Techstream on.
4. Warm up the engine.
5. On the Techstream, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Control the Injection Volume for A/F sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the injection volume).
7. Monitor the output voltages of the A/F and HO2 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%.
2. Each sensor reacts in accordance with increases and decreases in the injection volume.

Note. The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) 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 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the output voltages of both the A/F and HO2 sensors.
2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2; then press the graph button on the Data List view.

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 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 «FREEZE FRAME DATA»(ref-387083-S30119540122011022400000) .

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Scheme 112

1. Fuel vapor-containment valve (FVCV) stuck open During sequence C, the leak detection pump creates vacuum pressure in the EVAP system. If the pressure in the fuel tank drops, the ECM determines that the tank close valve is stuck open. The ECM then illuminates the MIL and sets the DTC. (This DTC is set according to 2trip detection logic.)
2. Fuel vapor-containment valve (FVCV) stuck closed (vent) During sequence G, the tank close valve opens to allow vacuum pressure generated by the leak detection pump into the fuel tank. If the pressure in the fuel tank does not drop, the ECM determines that the tank close valve is stuck closed. The ECM then illuminates the MIL and sets the DTC. (This DTC is set according to 2 trip detection logic.) During sequence I, the tank close valve opens to allow atmospheric pressure into the fuel tank. If there is no change in fuel tank pressure, the ECM determines that the tank close valve is stuck closed. The ECM then illuminates the MIL and sets the DTC. (This DTC is set according to 2 trip detection logic.)

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. Refer to «FREEZE FRAME DATA»(ref-387083-S30119540122011022400000) .

HINT

Techstream only

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F sensor function provided in the Active Test. The Control the Injection Volume for A/F sensor function can help to determine whether the Air-fuel Ratio (A/F) sensor, Heated Oxygen (HO2) 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. Put the engine in inspection mode. Refer to «INSPECTION MODE PROCEDURE»(ref-387083-S36792076252011022400000) .
2. Connect the Techstream to the DLC3.
3. Turn the Techstream on.
4. Warm up the engine.
5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
6. Perform the Control the Injection Volume for A/F sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the injection volume).
7. Monitor the output voltages of the A/F and HO2 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%.
2. Each sensor reacts in accordance with increases in the injection volume.

Note. The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) 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 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

1. Following the Control the Injection Volume for A/F sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2; then press the graph button on the Data List view.

HINT

1. DTC P2A00 or P2A03 may also be set, when the air-fuel ratio is stuck rich or lean.
2. A low A/F 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 A/F 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 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 «FREEZE FRAME DATA»(ref-387083-S30119540122011022400000) .

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. Refer to FREEZE FRAME DATA .

Scheme 113

Scheme 114

1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P3190, P3191 AND/OR P3193) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to P3190, P3191 and/or P3193 A P3190, P3191 and/or P3193, and other DTCs B HINT: If any other codes besides P3190, P3191 and/or P3193 are output, perform troubleshooting for those DTCs first. B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387083-S15407104242011022400000) A: Go to next step
2. CHECK OTHER DTC OUTPUT BY HYBRID CONTROL SYSTEM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Hybrid / DTC. Read the DTCs. Result Display (DTC output) Proceed to No DTC A Hybrid control system DTC is output B B --> GO TO «DIAGNOSTIC TROUBLE CODE CHART»(ref-387110-S03207692142011022400000) A: Go to next step
3. CHECK SHORTAGE OF FUEL NG --> REFILL FUEL OK: Go to next step
4. CHECK AIR INDUCTION SYSTEM OK The air induction system has no leakage and blockages. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
5. CHECK FOR UNUSUAL NOISE OR VIBRATION WHEN STARTING ENGINE OR REVVING UP OK Unusual noise and vibration do not occur. NG --> REPAIR OR REPLACE MALFUNCTIONING PART OK: Go to next step
6. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) Check the fuel pressure (low pressure side). Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-387089-S33412487342011022400000) . Standard pressure 196 to 588 kPa (2 to 6 kgf/cm 2 , 28 to 85 psi) NG --> CHECK AND REPLACE FUEL SYSTEM OK: Go to next step
7. INSPECT MASS AIR FLOW METER ASSEMBLY Inspect mass air flow meter. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-387086-S40182614042011022400000) . NG --> REPLACE MASS AIR FLOW METER ASSEMBLY OK: Go to next step
8. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Remove the engine coolant temperature sensor. Measure the resistance between the terminals of the engine coolant temperature sensor. Standard resistance Tester Connection Specified Condition 1 - 2 2 to 3 kohms at 20°C (68°F) 1 - 2 0.2 to 0.4 kohms at 80°C (176°F) NOTE: In case of checking the engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, dry the sensor. HINT: Alternate procedure: Connect an ohmmeter to the installed engine coolant temperature sensor and read the resistance. Use an infrared thermometer to measure the engine temperature in the immediate vicinity of the sensor. Compare these values to the resistance/temperature graph. Change the engine temperature (warm up or allow to cool down) and repeat the test. Reinstall the engine coolant temperature sensor. NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
9. INSPECT CRANKSHAFT POSITION SENSOR Disconnect the E47 CKP sensor connector. Measure the resistance between terminals 1 and 2. Standard resistance Tester Connection Condition Specified Condition 1 - 2 Cold 985 to 1600 ohms 1 - 2 Hot 1265 to 1890 ohms HINT: The terms cold and hot refer to the temperature of the sensor. Cold means approximately -10 to 50°C (14 to 122°F). Hot means approximately 50 to 100°C (122 to 212°F). Reconnect the CKP sensor connector. NG --> REPLACE CRANKSHAFT POSITION SENSOR OK: Go to next step
10. INSPECT VVT SENSOR (INTAKE SIDE AND EXHAUST SIDE) Inspect VVT sensor for intake side. Refer to «DTC P0340: Camshaft Position Sensor Circuit Malfunction; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); DTC P0345: Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0347: Camshaft Position Sensor "A" Circuit Low Input (Bank 2); DTC P0348: Camshaft Position Sensor "A" Circuit High Input (Bank 2)»(ref-387087-S14774745572011022400000) . Inspect VVT sensor for exhaust side. Refer to «DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1); DTC P0390: Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0392: Camshaft Position Sensor "B" Circuit Low Input (Bank 2); DTC P0393: Camshaft Position Sensor "B" Circuit High Input (Bank 2)»(ref-387087-S23745887532011022400000) . NG --> REPLACE VVT SENSOR OK: Go to next step
11. INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) Disconnect the E39 throttle body connector. Measure the resistance of the throttle actuator. Standard resistance Tester Connection Condition Specified Condition M+ (2) - M- (1) 20°C (68°F) 0.3 to 100 ohms Reconnect the throttle body connector. NG --> REPLACE THROTTLE BODY ASSEMBLY OK: Go to next step
12. INSPECT THROTTLE BODY (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the power switch on (IG) and turn the Techstream on. Enter the following menus: Active Test / Control the ETCS Open Slow Speed or Control the ETCS Close Slow Speed / Throttle Position No. 1 and No. 2. Check the values displayed on the Techstream. Standard voltage Active Test Throttle Position No. 1 Throttle Position No. 2 Control the ETCS Open Slow Speed 2.5 to 4.8 V 4.5 to 5.0 V Control the ETCS Close Slow Speed 0.5 to 1.2 V 2.1 to 3.1 V NG --> REPLACE THROTTLE BODY ASSEMBLY OK --> REPLACE ECM

Refer to the CAN Communication System. Refer to SYSTEM DESCRIPTION .