Engine Control System (Diagnostic Codes (P014C - P0560)): Diagnosis Lexus GS IV

INSPECTION PROCEDURE

HINT

1. 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.
2. 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.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from transmission.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.
7. 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 moving or stationary, 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

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 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. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) .
5. Start the engine.
6. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
7. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / Gas AF Control / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.
8. Perform the Active Test operation with the engine idling (press the RIGHT or LEFT button to change the fuel injection volume).
9. 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 -12.5% to +12.5%. 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 154

Scheme 155

Scheme 156

Scheme 157

1. Following the Control the Injection Volume for A/F Sensor 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 and ECT / Active Test / Control the Injection Volume for A/F Sensor / Gas AF Control / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2; and then press the graph button on the Data List view.

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 transmission.
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 be helpful in determining whether the vehicle was moving or stationary, 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.
6. 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.
7. 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.

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 158

1. READ VALUE USING TECHSTREAM (FUEL PRESSURE) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT and ECT / Data List / Fuel Press. Read the values. OK 1800 to 2800 kPa (18.4 to 28.6 kgf/cm 2 , 261 to 406 psi) Result Fuel Pressure (kPa) Proceed to 25000 or more A 0 A (1800 to 2800)* B HINT: *: The value must change when the engine is moving or stationary. B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - FUEL PRESSURE SENSOR) Disconnect the ECM connectors. Disconnect the fuel pressure sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F5-88 (VCPR) - F45-1 (VC) Always Below 1 ohms F5-86 (PR) - F45-3 (PR) Always Below 1 ohms F5-85 (EPR) - F45-2 (E2) Always Below 1 ohms F5-88 (VCPR) or F45-1 (VC) - body ground Always 10 kohms or higher F5-86 (PR) or F45-3 (PR) - Body ground Always 10 kohms or higher Reconnect the ECM connectors. Reconnect the fuel pressure sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - FUEL PRESSURE SENSOR) OK: Go to next step
3. INSPECT FUEL PRESSURE SENSOR (VC VOLTAGE) Disconnect the fuel pressure sensor connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F45-1 (VC) - Body ground Power switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Fuel Pressure Sensor) Reconnect the fuel pressure sensor connector. NG --> See step 6 OK: Go to next step
4. INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor. Refer to «INSPECTION [03/2012 - ]»(ref-600584-S22516770752014022400000) . NG --> See step 7 OK --> See step 6
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS [03/2012 - ]»(ref-600436-S08790525922014022400000)
6. REPLACE ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000)
7. REPLACE FUEL PRESSURE SENSOR. Refer to «REMOVAL [03/2012 - ]»(ref-600584-S18798556952014022400000)

HINT

1. If the current from the INJ relay is cut because DTC P062D is stored, DTC P1235 will be stored even if the fuel pump for high pressure is normal.
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 159

Scheme 160

1. CHECK DTC OUTPUT 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 Result Proceed to DTC P0201, P0202, P0203, P0204, P0205 or P0206 is output A P062D or 4 or more of DTC P0201, P0202, P0203, P0204, P0205 and P0206 are output B One of the following pairs of DTCs is output: P0201 and P0204, P0202 and P0205, or P0203 and P0206 C DTC P062D is output C B --> See step 5 C --> See step 6 A: Go to next step
2. CHECK HARNESS AND CONNECTOR Disconnect the injector driver (EDU) connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition K1-2 (IJ1+) - K1-5 (IJ1-) 20°C (68°F) 2.01 to 2.31 ohms L1-3 (IJ2+) - L1-6 (IJ2-) 20°C (68°F) 2.01 to 2.31 ohms K1-3 (IJ3+) - K1-6 (IJ3-) 20°C (68°F) 2.01 to 2.31 ohms L1-1 (IJ4+) - L1-4 (IJ4-) 20°C (68°F) 2.01 to 2.31 ohms K1-1 (IJ5+) - K1-4 (IJ5-) 20°C (68°F) 2.01 to 2.31 ohms L1-2 (IJ6+) - L1-5 (IJ6-) 20°C (68°F) 2.01 to 2.31 ohms K1-2 (IJ1+) or K1-5 (IJ1-) - Body ground 20°C (68°F) 1 Mohms or higher L1-3 (IJ2+) or L1-6 (IJ2-) - Body ground 20°C (68°F) 1 Mohms or higher K1-3 (IJ3+) or K1-6 (IJ3-) - Body ground 20°C (68°F) 1 Mohms or higher L1-1 (IJ4+) or L1-4 (IJ4-) - Body ground 20°C (68°F) 1 Mohms or higher K1-1 (IJ5+) or K1-4 (IJ5-) - Body ground 20°C (68°F) 1 Mohms or higher L1-2 (IJ6+) or L1-5 (IJ6-) - Body ground 20°C (68°F) 1 Mohms or higher HINT: The standard values shown are fuel injector assembly resistance values. Reconnect the injector driver (EDU) connectors. NG --> See step 8 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER) Disconnect the ECM connectors. Disconnect the injector driver (EDU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F5-13 (#1) - F36-3 (#10) Always Below 1 ohms F5-15 (#2) - F36-2 (#20) Always Below 1 ohms F5-45 (#3) - F36-1 (#30) Always Below 1 ohms F5-43 (#4) - F36-12 (#40) Always Below 1 ohms F5-75 (#5) - F36-11 (#50) Always Below 1 ohms F5-73 (#6) - F36-10 (#60) Always Below 1 ohms F5-13 (#1) or F36-3 (#10) - Body ground Always 10 kohms or higher F5-15 (#2) or F36-2 (#20) - Body ground Always 10 kohms or higher F5-45 (#3) or F36-1 (#30) - Body ground Always 10 kohms or higher F5-43 (#4) or F36-12 (#40) - Body ground Always 10 kohms or higher F5-75 (#5) or F36-11 (#50) - Body ground Always 10 kohms or higher F5-73 (#6) or F36-10 (#60) - Body ground Always 10 kohms or higher Reconnect the ECM connectors. Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK ECM (#10, #20, #30, #40, #50 AND #60 VOLTAGE) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . HINT: If DTC P062D is stored, the current from the INJ relay is cut. Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG) and turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) . Disconnect the injector driver (EDU) connector. Inspect using an oscilloscope. While cranking the engine, check waveform the terminals of the EDU connector. Standard Signal waveform appears as shown in the illustration. ECM Terminal Name F36-3 (#10) - Body ground F36-2 (#20) - Body ground F36-1 (#30) - Body ground F36-12 (#40) - Body ground F36-11 (#50) - Body ground F36-10 (#60) - Body ground Tester Range 2 V/DIV., 20 ms./DIV. Condition Cranking TEXT IN ILLUSTRATION *a Component with harness connected (to Injector driver) NG --> See step 9 OK --> See step 10
5. INSPECT NO. 1 INTEGRATION RELAY Remove the No. 1 integration relay from the No. 1 engine room relay block and junction block assembly. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 1F-11 - Body ground Power switch on (IG) 11 to 14 V 1F-5 - Body ground Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Component with harness connected (No. 1 integration relay) NG --> REPLACE NO. 1 INTEGRATION RELAY OK: Go to next step
6. CHECK HARNESS OR CONNECTOR (ECM - INJECTOR DRIVER) Disconnect the ECM connector. Disconnect the injector driver (EDU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F5-14 (INJ1) - F36-6 (INJF) Always Below 1 ohms F5-44 (INJ2) - F36-5 (INJ2) Always Below 1 ohms F5-74 (INJ3) - F36-4 (INJ3) Always Below 1 ohms F5-14 (INJ1) or F36-6 (INJF) - Body ground Always 10 kohms or higher F5-44 (INJ2) or F36-5 (INJ2) - Body ground Always 10 kohms or higher F5-74 (INJ3) or F36-4 (INJ3) - Body ground Always 10 kohms or higher Reconnect the injector driver (EDU) connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK TERMINAL VOLTAGE (ECM OUTPUT VOLTAGE) Disconnect the injector driver (EDU) connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F36-6 (INJF) - Body ground Power switch on (IG) 4.5 to 5.5 V F36-5 (INJ2) - Body ground Power switch on (IG) 4.5 to 5.5 V F36-4 (INJ3) - Body ground Power switch on (IG) 4.5 to 5.5 V Reconnect the injector driver (EDU) connector. NG --> See step 9 OK --> See step 10
8. INSPECT FUEL INJECTOR FOR DIRECT INJECTION (RESISTANCE) Check the resistance of the fuel injector for direct injection. Refer to «INSPECTION [03/2012 - ]»(ref-600584-S36011773062014022400000) . HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly. Refer to «INITIALIZATION [03/2012 - ]»(ref-600436-S34722863312014022400000) . NG --> See step 11 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER - FUEL INJECTOR FOR DIRECT INJECTION)
9. REPLACE ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000)
10. REPLACE INJECTOR DRIVER. Refer to «REMOVAL [03/2012 - ]»(ref-600584-S06750443562014022400000)
11. REPLACE FUEL INJECTOR FOR DIRECT INJECTION. Refer to «REMOVAL [03/2012 - ]»(ref-600584-S04555791432014022400000)

HINT

1. If any DTCs other than misfire DTCs are output, 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 be helpful in determining whether the vehicle was moving or stationary, 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.
3. If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the ECM as freeze frame data.
4. If the misfire still cannot be reproduced even though the conditions stored in the ECM as freeze frame data have been reproduced, one of the following factors is considered to be a possible cause of the problem: There was insufficient fuel in the tank. Improper fuel is used. The spark plugs have been contaminated. The problem requires further diagnosis.
5. After finishing repairs, check the misfire counts of the cylinders (Cylinder #1 Misfire Count to Cylinder #6 Misfire Count).
6. Be sure to confirm that no misfiring cylinder DTCs are set again by conducting the confirmation driving pattern after finishing repairs.
7. For 6 cylinder engine, the ECM intentionally does not set the specific misfiring cylinder DTCs at high engine speed. If misfires occur only in high engine speed areas, only DTC P0300 is set. In the event of DTC P0300 being present, perform the following operations: Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) . Start the engine and conduct the confirmation driving pattern. Read the misfire count of each cylinder or DTC(s) using the Techstream. Repair the cylinder(s) that has a high misfiring count or is indicated by the DTC. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not set.
8. When one of Short FT #1, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-20%, the air fuel ratio may be Rich (-20% or less) or Lean (+20% or more).
9. When the Coolant Temp in the freeze frame data is less than 75°C (167°F), the misfire have occurred only while warming up the engine.
10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be detected.

HINT

1. DTCs P0327 and P0328 are for the bank 1 knock sensor circuit.
2. DTCs P0332 and P0333 are for the bank 2 knock sensor circuit.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from transmission.
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. After performing the inspection procedure for the crankshaft position sensor, if DTC P0335 is output again, check the following items related to the VVT sensor. Installation condition of the VVT sensor Installation condition of the camshaft Connection of the VVT sensor connector
2. If no problem is found through this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
3. Check the engine speed. The engine speed can be checked using the Techstream. Follow the procedure below: Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. The engine speed may be indicated as zero despite the engine rotating normally. This is caused by a lack of NE signals from the crankshaft position sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed if the crankshaft position sensor output voltage is insufficient.
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.

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 transmission.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
4. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.

Scheme 161

1. CHECK VVT SENSOR FOR INTAKE SIDE (SENSOR POWER SOURCE) Disconnect the VVT sensor connector. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F29-3 (VC) - Body ground Power switch on (IG) 4.5 to 5.5 V F15-3 (VC) - Body ground Power switch on (IG) 4.5 to 5.5 V TEXT IN ILLUSTRATION *1 Bank 1 *2 Bank 2 *a Front view of wire harness connector (to VVT Sensor for Intake Side) Reconnect the VVT sensor connector. NG --> See step 8 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the VVT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F29-1 (VVR+) - F5-81 (VV1+) Always Below 1 ohms F29-2 (VVR-) - F5-113 (VV1-) Always Below 1 ohms F15-1 (VVL+) - F5-78 (VV2+) Always Below 1 ohms F15-2 (VVL-) - F5-110 (VV2-) Always Below 1 ohms F29-1 (VVR+) or F5-81 (VV1+) - Body ground Always 10 kohms or higher F29-2 (VVR-) or F5-113 (VV1-) - Body ground Always 10 kohms or higher F15-1 (VVL+) or F5-78 (VV2+) - Body ground Always 10 kohms or higher F15-2 (VVL-) or F5-110 (VV2-) - Body ground Always 10 kohms or higher Reconnect the VVT sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) OK: Go to next step
3. CHECK SENSOR INSTALLATION (VVT SENSOR FOR INTAKE SIDE) Check the VVT sensor installation. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
4. CHECK CAMSHAFT TIMING GEAR ASSEMBLY (TEETH OF PLATE) Check the teeth of the signal plate. OK Sensor plate teeth do not have any cracks or deformation. HINT: Perform "Inspection After Repair" after replacing the camshaft timing gear assembly. Refer to «INITIALIZATION [03/2012 - ]»(ref-600436-S34722863312014022400000) . NG --> See step 10 OK: Go to next step
5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH). Refer to «PROCEDURE - Step 4»(ref-600581-S31303881242014022400000) NG --> See step 12 OK: Go to next step
6. REPLACE VVT SENSOR FOR INTAKE SIDE Replace the VVT sensor. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S26205530222014022400000) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0340, P0342, P0343, P0345, P0347 AND/OR P0348) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG). Turn the Techstream on. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) . Start the engine. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC is not output A DTC P0340, P0342, P0343, P0345, P0347 or P0348 is output B HINT: If the engine does not start, replace the ECM. B --> See step 11 A --> END
8. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the VVT sensor for intake side connector. Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F29-3 (VC) - F5-82 (VCV1) Always Below 1 ohms F15-3 (VC) - F5-111 (VCV2) Always Below 1 ohms F29-3 (VC) or F5-82 (VCV1) - Body ground Always 10 kohms or higher F15-3 (VC) or F5-111 (VCV2) - Body ground Always 10 kohms or higher Reconnect the VVT sensor for intake side connector. Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) OK --> See step 11
9. SECURELY REINSTALL VVT SENSOR FOR INTAKE SIDE. Refer to «INSTALLATION [03/2012 - ]»(ref-600565-S04375233272014022400000)
10. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600560-S27631210732014022400000)
11. REPLACE ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000)
12. ADJUST VALVE TIMING. Refer to «REASSEMBLY [03/2012 - ]»(ref-600560-S36734244042014022400000)

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 162

1. READ OUTPUT DTC 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 Result Proceed to One of DTCs P0351, P0352, P0353, P0354, P0355, P0356 is output A Some of DTCs P0351, P0352, P0353, P0354, P0355, P0356 are output B B --> See step 5 A: Go to next step
2. PERFORM SIMULATION TEST Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . Change the arrangement of the ignition coil assemblies. NOTE: Do not change the location of the connectors. Perform a simulation test. Result Result Proceed to Same DTCs are output (same as DTCs that were cleared) A Other DTCs are output B B --> See step 7 A: Go to next step
3. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil assembly connectors. Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition F32-1 (+B) - F32-4 (GND) Power switch on (IG) 11 to 14 V F6-1 (+B) - F6-4 (GND) Power switch on (IG) 11 to 14 V F33-1 (+B) - F33-4 (GND) Power switch on (IG) 11 to 14 V F7-1 (+B) - F7-4 (GND) Power switch on (IG) 11 to 14 V F34-1 (+B) - F34-4 (GND) Power switch on (IG) 11 to 14 V F9-1 (+B) - F9-4 (GND) Power switch on (IG) 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) Reconnect the ignition coil assembly connectors. NG --> See step 5 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the ignition coil assembly connectors. Disconnect the ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F32-3 (IGT1) - F5-107 (IGT1) Always Below 1 ohms F6-3 (IGT2) - F5-140 (IGT2) Always Below 1 ohms F33-3 (IGT3) - F5-106 (IGT3) Always Below 1 ohms F7-3 (IGT4) - F5-139 (IGT4) Always Below 1 ohms F34-3 (IGT5) - F5-105 (IGT5) Always Below 1 ohms F9-3 (IGT6) - F5-138 (IGT6) Always Below 1 ohms F32-2 (IGF1) - F5-103 (IGF1) Always Below 1 ohms F6-2 (IGF2) - F5-136 (IGF2) Always Below 1 ohms F33-2 (IGF1) - F5-103 (IGF1) Always Below 1 ohms F7-2 (IGF2) - F5-136 (IGF2) Always Below 1 ohms F34-2 (IGF1) - F5-103 (IGF1) Always Below 1 ohms F9-2 (IGF2) - F5-136 (IGF2) Always Below 1 ohms F32-3 (IGT1) or F5-107 (IGT1) - Body ground Always 10 kohms or higher F6-3 (IGT2) or F5-140 (IGT2) - Body ground Always 10 kohms or higher F33-3 (IGT3) or F5-106 (IGT3) - Body ground Always 10 kohms or higher F7-3 (IGT4) or F5-139 (IGT4) - Body ground Always 10 kohms or higher F34-3 (IGT5) or F5-105 (IGT5) - Body ground Always 10 kohms or higher F9-3 (IGT6) or F5-138 (IGT6) - Body ground Always 10 kohms or higher F32-2 (IGF1) or F5-103 (IGF1) - Body ground Always 10 kohms or higher F6-2 (IGF2) or F5-136 (IGF2) - Body ground Always 10 kohms or higher F33-2 (IGF1) or F5-103 (IGF1) - Body ground Always 10 kohms or higher F7-2 (IGF2) or F5-136 (IGF2) - Body ground Always 10 kohms or higher F34-2 (IGF1) or F5-103 (IGF1) - Body ground Always 10 kohms or higher F9-2 (IGF2) or F5-136 (IGF2) - Body ground Always 10 kohms or higher Reconnect the ignition coil assembly connectors. Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - ECM) OK --> See step 8
5. INSPECT IGNITION COIL ASSEMBLY (GROUND CIRCUIT) Disconnect the ignition coil assembly connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition F32-4 (GND) - Body ground Always Below 1 ohms F6-4 (GND) - Body ground Always Below 1 ohms F33-4 (GND) - Body ground Always Below 1 ohms F7-4 (GND) - Body ground Always Below 1 ohms F34-4 (GND) - Body ground Always Below 1 ohms F9-4 (GND) - Body ground Always Below 1 ohms TEXT IN ILLUSTRATION *a Front view of wire harness connector (to Ignition Coil Assembly) Reconnect the ignition coil assembly connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - BODY GROUND) OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (IGNITION COIL ASSEMBLY - IG2 RELAY)
6. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - NO. 1 INTEGRATION RELAY) Disconnect the ignition coil assembly connectors. Remove the No. 1 integration relay from the No. 1 engine room relay block and junction block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F32-1 (+B) - 1F-7 Always Below 1 ohms F6-1 (+B) - 1F-7 Always Below 1 ohms F33-1 (+B) - 1F-7 Always Below 1 ohms F7-1 (+B) - 1F-7 Always Below 1 ohms F34-1 (+B) - 1F-7 Always Below 1 ohms F9-1 (+B) - 1F-7 Always Below 1 ohms F32-1 (+B) or 1F-7 - Body ground Always 10 kohms or higher F6-1 (+B) or 1F-7 - Body ground Always 10 kohms or higher F33-1 (+B) or 1F-7 - Body ground Always 10 kohms or higher F7-1 (+B) or 1F-7 - Body ground Always 10 kohms or higher F34-1 (+B) or 1F-7 - Body ground Always 10 kohms or higher F9-1 (+B) or 1F-7 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
7. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S18103547432014022400000)
8. REPLACE ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000)
9. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-600578-S39722387982014022400000)

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 transmission.
2. Bank 2 refers to the bank that does not include the No. 1 cylinder.
3. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
4. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.

CONDITIONING FOR SENSOR TESTING

HINT

Perform the operation with the engine speeds and time durations described below prior to checking the waveforms of the air fuel ratio and heated oxygen sensors. This is in order to activate the sensors sufficiently to obtain the appropriate inspection results.

Scheme 163

1. Connect the Techstream to the DLC3 [A].
2. Turn the power switch on (IG) and turn the Techstream on [A].
3. Put the engine in inspection mode (maintenance mode). Refer to «INSPECTION MODE PROCEDURE [03/2012 - ]»(ref-600412-S34816019962014022400000) [A].
4. Start the engine and warm it up with all the accessories switched off and the shift lever in P, until the engine coolant temperature stabilizes [B]. HINT: In order to keep the idling stable, turn off the A/C and all other electric loads and do not perform any shift operations.
5. Run the engine at an engine speed of between 1500 rpm and 2500 rpm for at least 3 minutes [C]. HINT: During charging control, the engine speed is set at idle. Therefore, the engine speed does not increase when depressing the accelerator pedal. In this case, perform step [C] after charging control has completed.
6. While running the engine at 2500 rpm and 1500 rpm for 2 seconds, check the waveforms of the air fuel ratio and heated oxygen sensors using the Techstream [D]. HINT: If either of the voltage outputs of either the air fuel ratio or heated oxygen sensor does not fluctuate, or either of the sensors makes a noise, the sensor may be malfunctioning. 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, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor. If the three-way catalytic converter has deteriorated, the heated oxygen sensor (located behind the three-way catalytic converter) voltage output fluctuates up and down frequently, even under normal driving conditions (active air fuel ratio control is not performed).

Scheme 164

HINT

1. If a malfunction cannot be found when troubleshooting DTC P0420 or P0430, a lean or rich abnormality may be the cause. Perform troubleshooting by following the inspection procedure for P0171 or P0174 (System Too Lean) and P0172 or P0175 (System Too Rich).
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.
4. Sensor 1 refers to the sensor closest to the engine assembly.
5. Sensor 2 refers to the sensor farthest away from the engine assembly.
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.

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

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 cap. Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic troubleshooting procedure.

Scheme 165

1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the power switch on (IG) (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 42.11 kPa(abs) [315.83 mmHg(abs)] Wire harness/connector (ECM - canister pressure sensor) Canister pressure sensor Short in ECM circuit A P0453 More than 123.761 kPa(abs) [928.208 mmHg(abs)] Wire harness/connector (ECM - canister pressure sensor) Canister pressure sensor Open in ECM circuit B B --> See step 4 C --> See step 9 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the power switch off. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A20-42 (PPMP) - Body ground Always Below 10 ohms Wire harness/connector (ECM - canister pressure sensor) Short in canister pressure sensor circuit A 10 kohms or higher 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 ECM connector. Measure the resistance according to the value(s) in the table below. Result Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to A20-42 (PPMP) - Body ground Always 10 kohms or higher Short in canister pressure sensor circuit A Below 10 ohms Short in wire harness/connector (ECM - Canister pressure sensor) B Reconnect the canister pump module connector. Reconnect the ECM connector. A --> See step 5 B --> See step 6
4. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition U41-8 (SGND) - Body ground Always Below 100 ohms Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition U41-6 (VCC) - Body ground Power switch on (IG) 4.5 to 5.5 V U41-7 (VOUT) - Body ground Power switch on (IG) 4.5 to 5.5 V Result Test Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and/or 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: Go to next step
5. REPLACE CANISTER PUMP MODULE Replace the canister pump module. Refer to «REMOVAL [03/2012 - ]»(ref-600566-S04098785092014022400000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. Check for filter blockage in the canister filter. If the canister filter has blockages, replace the fuel tank filler pipe assembly. TEXT IN ILLUSTRATION *1 Fuel Tank Vent Hose *2 Vent Hose *3 Air Inlet Port *4 Fuel Tank *5 Canister *6 Fuel Tank Filler Pipe Assembly (Canister Filter) *a Inspection Area (Check for Disconnection and/or cracks) - - NEXT --> See step 8
6. REPAIR OR REPLACE HARNESS OR CONNECTOR (CANISTER PUMP MODULE - ECM) HINT: If the exhaust pipe has been removed, go to the next step before reinstalling it. NEXT --> See step 8
7. REPLACE ECM Replace the ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000) . NEXT --> See step 8
8. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG) and turn the Techstream on. Perform the Evaporative System Check using the Techstream, referring to the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0451, P0452 or P0453. Check the DTC judgment result. RESULT Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit NEXT --> END
9. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-600578-S03936887102014022400000)

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

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 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. Refer to "Data List / Active Test" [Engine Speed, ISC Feedback Value and ISC Learning Value]. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600436-S18321174072014022400000) .

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. DTC P050B may be set when the engine shows the symptom as listed below. If necessary, check the trouble area as listed below. Symptom Factor Trouble Area Low idle speed at engine cold (immediately after engine start) Excessive engine friction Engine oil deterioration Drive belt tension Cooler compressor assembly Generator assembly Rough idle at engine cold (immediately after engine start) 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 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.

Scheme 166

1. INSPECT AUXILIARY BATTERY Check the auxiliary battery voltage. Auxiliary battery voltage 11 to 14 V NG --> REPLACE AUXILIARY BATTERY OK: Go to next step
2. CHECK AUXILIARY BATTERY TERMINAL Check that the auxiliary battery terminals are not loose or corroded. OK Auxiliary battery terminals are not loose or corroded. NG --> REPAIR OR REPLACE AUXILIARY BATTERY TERMINAL OK: Go to next step
3. INSPECT ECM (BATT VOLTAGE) Disconnect the ECM connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition A20-1 (BATT) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *a Front view of wire harness connector (to ECM) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (AUXILIARY BATTERY - ECM) OK: Go to next step
4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0560) Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600436-S38423165432014022400000) . Turn the power switch off and wait for at least 30 seconds. Turn the power switch on (IG) and turn the Techstream on. Wait 5 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Result Proceed to DTC P0560 is output A DTC is not output B B --> See step 5 A --> See step 6
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS [03/2012 - ]»(ref-600436-S08790525922014022400000)
6. REPLACE ECM. Refer to «REMOVAL [03/2012 - ]»(ref-600565-S01816401622014022400000)