Engine Control System (Diagnostic Codes (P0010 - P0136)): Diagnosis Lexus RX III рестайлинг

INSPECTION PROCEDURE

HINT

1. If DTC P0010 is displayed, check the intake camshaft circuit for the bank 1 VVT system.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
3. If DTC P0020 is displayed, check the intake camshaft circuit for the bank 2 VVT system.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. 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. If DTC P0011 or P0012 is displayed, check the intake camshaft circuit for the bank 1 VVT system.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
3. If DTC P0021 or P0022 is displayed, check the intake camshaft circuit for the bank 2 VVT system.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. DTC P0011, P0012, P0021 or P0022 may be set when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.
6. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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. If DTC P0011 or P0012 is displayed, check the intake camshaft circuit for the bank 1 VVT system.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
3. If DTC P0021 or P0022 is displayed, check the intake camshaft circuit for the bank 2 VVT system.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. DTC P0011, P0012, P0021 or P0022 may be set when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain set even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.
6. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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. If DTC P0013 is displayed, check the exhaust camshaft circuit for the bank 1 VVT system.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
3. If DTC P0023 is displayed, check the exhaust camshaft circuit for the bank 2 VVT system.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. 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. If DTC P0014 or P0015 is displayed, check the exhaust camshaft circuit for the bank 1 VVT system.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
3. If DTC P0024 or P0025 is displayed, check the exhaust camshaft circuit for the bank 2 VVT system.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. DTC P0014, P0015, P0024 or P0025 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.
6. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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. If DTC P0014 or P0015 is displayed, check the exhaust camshaft circuit for the bank 1 VVT system.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
3. If DTC P0024 or P0025 is displayed, check the exhaust camshaft circuit for the bank 2 VVT system.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. DTC P0014, P0015, P0024 or P0025 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Those foreign objects may then be captured by the oil filter.
6. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.

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

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. 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
6. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-602701-S25758090002014030500000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

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

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. 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
6. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-602702-S28438098712014030500000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

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

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. When the values for the Data List items O2 Heater Curr Val B1S2 and O2 Heater Curr Val B2S2 are not 0 A, the heaters are on.
6. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
7. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the heated oxygen sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-602701-S25758090002014030500000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

Scheme 94

1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Inspect the heated oxygen sensor. Refer to «INSPECTION [03/2012 - ]»(ref-602706-S27961052412014030500000) . NG --> See step 4 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF HEATED OXYGEN SENSOR) Disconnect the heated oxygen sensor 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 S1-1 (+B) - Body ground Engine switch on (IG) 11 to 14 V D36-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Heated Oxygen Sensor) - - *1 Bank 1 *2 Bank 2 Reconnect the heated oxygen sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - EFI MAIN RELAY) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen 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 S1-2 (HT1B) - D1-45 (HT1B) Always Below 1 ohms D36-1 (HT2B) - D1-44 (HT2B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition S1-2 (HT1B) or D1-45 (HT1B) - Body ground Always 10 kohms or higher D36-1 (HT2B) or D1-44 (HT2B) - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM) OK --> See step 5
4. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-602706-S12637257172014030500000)
5. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)

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

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. When the values for the Data List items O2 Heater Curr Val B1S2 and O2 Heater Curr Val B2S2 are not 0 A, the heaters are on.
6. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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.
7. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the heated oxygen sensor output voltage. Refer to «INSPECTION PROCEDURE»(ref-602702-S28438098712014030500000) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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

HINT

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can 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 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 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 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. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. If DTC P0117 is stored, check that the engine does not overheat (the DTC P0117 may be stored due to engine overheating).

HINT

1. If any of DTCs P0115, P0117 or P0118 are output simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

HINT

1. If any of DTCs P0115, P0117 or P0118 are output simultaneously with DTC P0116, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

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.

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.

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.

HINT

1. If any of DTCs P0115, P0117 or P0118 are set simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
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. If any of DTCs P0115, P0117 or P0118 are set simultaneously with DTC P0125, the engine coolant temperature sensor may have an open or a short circuit. Troubleshoot those DTCs first.
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. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

HINT

1. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. When the DTC is output, check the engine coolant temperature using the Techstream. Enter the following menus: Powertrain / Engine / Data List / Coolant Temp. If the Coolant Temp value is lower than the actual engine coolant temperature, the engine coolant temperature sensor circuit may be malfunctioning. In this case, check the wire harnesses and connectors (and those connections) between the ECM and the engine coolant temperature sensor first.

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume function provided in the Active Test. The Control the Injection Volume 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 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 / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.
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. Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations.
2. 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 4 Fuel injector assembly Fuel pressure Gas leak from exhaust system (Air fuel ratio extremely rich or lean)

Scheme 95

Scheme 96

Scheme 97

Scheme 98

1. Following the Control the Injection Volume procedure 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 / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2; and then press the graph button on the Data List view.

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

HINT

1. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transaxle.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Sensor 1 refers to the sensor closest to the engine assembly.
4. Sensor 2 refers to the sensor farthest away from the engine assembly.
5. 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.

Scheme 99

1. READ DTC OUTPUT 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 P0138 or P0158 is output A P0137 or P0157 is output B P0136 or P0156 is output C P0139 or P0159 is output D P0136, P0137, P0138, P0156, P0157 or P0158 and other DTCs are output E B --> See step 6 C --> See step 4 D --> See step 15 E --> See step 24 A: Go to next step
2. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the heated oxygen sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (+B) - 3 (E2) Always 10 kohms or higher 1 (+B) - 4 (OX1B) Always 10 kohms or higher 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Heated Oxygen Sensor) *1 Bank 1 *2 Bank 2 Reconnect the heated oxygen sensor connector. NG --> See step 22 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Short) Tester Connection Condition Specified Condition D1-45 (HT1B) - D1-114 (OX1B) Always 10 kohms or higher D1-44 (HT2B) - D1-112 (OX2B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM) OK --> See step 19
4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / O2S B1S2 or O2S B2S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of the heated oxygen sensor displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. The heated oxygen sensor has a maximum output delay of approximately 20 seconds. Standard voltage Fluctuates between 0.4 V or less, and 0.55 V or higher. NG --> See step 6 OK: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2. Change the fuel injection volume using the Techstream, and monitor the voltage output of air fuel ratio and heated oxygen sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed in fine gradations within this range. The air fuel ratio sensor is displayed as AFS Voltage B1S1 or AFS Voltage B2S1, and the heated oxygen sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream. 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. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Techstream Display (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 (Air fuel ratio) AFS Voltage B2S1 (Air fuel ratio) Alternates between higher and less than 3.3 V OK Remains at higher than 3.3 V NG Remains at less than 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1S2 or O2S B2S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage (AFS Voltage B1S1 or AFS Voltage B2S1) remains at either less or higher than 3.3 V despite the heated oxygen sensor indicating a normal reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 12 OK --> CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (FUEL INJECTOR ASSEMBLY, FUEL SYSTEM, INTAKE SYSTEM, ETC.)
6. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leakage. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
7. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 20 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the heated oxygen 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 S1-2 (HT1B) - D1-45 (HT1B) Always Below 1 ohms S1-4 (OX1B) - D1-114 (OX1B) Always Below 1 ohms S1-3 (E2) - D1-115 (EX1B) Always Below 1 ohms D36-1 (HT2B) - D1-44 (HT2B) Always Below 1 ohms D36-3 (OX2B) - D1-112 (OX2B) Always Below 1 ohms D36-4 (E2) - D1-113 (EX2B) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition S1-2 (HT1B) or D1-45 (HT1B) - Body ground Always 10 kohms or higher S1-4 (OX1B) or D1-114 (OX1B) - Body ground Always 10 kohms or higher D36-1 (HT2B) or D1-44 (HT2B) - Body ground Always 10 kohms or higher D36-3 (OX2B) or D1-112 (OX2B) - Body ground Always 10 kohms or higher Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM) OK: Go to next step
9. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL [03/2012 - ]»(ref-602706-S12637257172014030500000) . NEXT: Go to next step
10. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158). NEXT: Go to next step
11. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0156 OR P0157) Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTC: P0136, P0137, P0156 or P0157. Check that the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (DTC P0136, P00137, P0156 or P0157 is output) A NORMAL (DTC is not output) B B --> END A --> See step 21
12. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL [03/2012 - ]»(ref-602706-S10327068972014030500000) . NEXT: Go to next step
13. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158). NEXT: Go to next step
14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0156) Connect the Techstream to the DLC3. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTC: P0136 or P0156. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (DTC P0136 or P0156 is output) A NORMAL (DTC is not output) B B --> END A --> See step 20
15. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leak. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
16. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition D1-45 (HT1B) - D1-114 (OX1B) Always 10 kohms or higher D1-44 (HT2B) - D1-112 (OX2B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
17. PERFORM CONFIRMATION DRIVING PATTERN Perform Confirmation Driving Pattern (P0139 and P0159). NEXT: Go to next step
18. READ DTC OUTPUT (DTC P0139 OR P0159 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Utility / All Readiness. Input DTCs: P0139 or P0159. Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern again but increase the vehicle speed. Result Result Proceed to ABNORMAL (DTC P0139 or P0159 is output) A NORMAL (DTC is not output) B B --> See step 23 A --> See step 20
19. REPLACE ECM. Refer to «REMOVAL [03/2012 - 07/2012]»(ref-602706-S36928064912014030500000)
20. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-602706-S12637257172014030500000)
21. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-602706-S10327068972014030500000)
22. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-602706-S12637257172014030500000)
23. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS [03/2012 - ]»(ref-602560-S33270940242014030500000)
24. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - 07/2012]»(ref-602699-S37427334262014030500000)