Engine Control System (Diagnostic Codes (P0010 - P0351)): Diagnosis Lexus GS III facelift

INSPECTION PROCEDURE

HINT

1. If DTC P0010 is displayed, check the bank 1 VVT system for intake side circuit.
2. Bank 1 refers to the bank that includes No. 1 cylinder.
3. If DTC P0020 is displayed, check the bank 2 VVT system for intake side circuit.
4. Bank 2 refers to the bank that does not include 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 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-382723-S29949148122011012800000) .

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1. CHECK DTC (DTC P0010 OR P0020) Connect the Techstream to the DLC3. Clear DTC after recording the freeze frame data and DTC. Allow the engine to idle and check DTC. Check that P0010 or P0020 is present. OK P0010 or P0020 is present NG --> CHECK FOR INTERMITTENT PROBLEMS OK: Go to next step
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE SIDE OF BANK 1 AND BANK 2) Disconnect the E51 or E49 OCV connector. Remove the OCV. Measure the resistance between the terminals of the OCV. Standard resistance 6.9 to 7.9 ohms at 20°C (68°F) Reinstall the OCV. NG --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE SIDE) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV FOR INTAKE SIDE - ECM) Disconnect the E51 or E49 OCV connector. Disconnect the E8 and E6 ECM connector. Measure the resistance. Standard resistance (check for open) Tester Connection Specified Condition E51-1 - E8-34 (OC1+) Below 1 ohms E51-2 - E8-33 (OC1-) Below 1 ohms E49-1 - E6-9 (OC2+) Below 1 ohms E49-2 - E6-8 (OC2-) Below 1 ohms Standard resistance (check for short) Tester Connection Specified Condition E51-1 or E8-34 (OC1+) - Body ground 10 kohms or higher E51-2 or E8-33 (OC1-) - Body ground 10 kohms or higher E49-1 or E6-9 (OC2+) - Body ground 10 kohms or higher E49-2 or E6-8 (OC2-) - Body ground 10 kohms or higher Reconnect the OCV connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM

HINT

1. If DTC P0011 or P0012 is displayed, check the bank 1 VVT system for intake side circuit.
2. Bank 1 refers to the bank that includes No. 1 cylinder.
3. If DTC P0021 or P0022 is displayed, check the bank 2 VVT system for intake side circuit.
4. Bank 2 refers to the bank that does not include 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 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-382723-S29949148122011012800000) .

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1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC Output) Proceed to P0011, P0012, P0021 or P0022 A P0011, P0012, P0021 or P0022 and other DTCs B HINT: If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first. B --> GO TO DTC CHART A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. On the Techstream, select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2). Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Tester Operation Specified Condition OCV OFF Normal engine speed OCV ON Engine idles roughly or stalls (soon after OCV switched from OFF to ON) NG --> See step 4 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream Refer to «CHECK MODE PROCEDURE»(ref-382723-S26645782532011012800000) . Drive the vehicle for more than 10 minutes. Read DTCs using the Techstream. OK No DTC output. NG --> See step 4 OK --> END
4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN) Remove the cylinder head cover RH and LH. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover. Check that the timing marks of the camshaft timing gears are aligned with the timing marks of the bearing cap as shown in the illustration. If not, turn the crankshaft 1 revolution (360°), then align the marks as above. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. NG --> ADJUST VALVE TIMING OK: Go to next step
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE SIDE OF BANK 1 AND BANK 2) Remove the OCV. Measure the resistance between the terminals of the OCV. Standard resistance 6.9 to 7.9 ohms at 20°C (68°F) Apply positive battery voltage to terminal 1 and negative battery voltage to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the OCV. NG --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR INTAKE SIDE) OK: Go to next step
6. INSPECT OIL CONTROL VALVE FILTER AND PIPE Remove the No. 1 and No. 2 oil pipes. Remove the oil control valve filter. Check that the filter and pipe are not clogged. OK The filter and pipe are not clogged. Reinstall the oil control valve filter. Reinstall the No. 1 and No. 2 oil pipes. NG --> CLEAN OIL CONTROL VALVE FILTER AND PIPE OK: Go to next step
7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream Refer to «CHECK MODE PROCEDURE»(ref-382723-S26645782532011012800000) . Drive the vehicle for more than 10 minutes. Read output DTCs using the Techstream. OK No DTC output. HINT: DTC P0011, P0012, P0021 or P0022 is output when foreign objects in engine oil are caught in some parts of the system. These codes will stay registered even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. OK --> SYSTEM OK NG --> REPLACE ECM

HINT

1. If DTC P0013 is displayed, check the bank 1 VVT system for exhaust side circuit.
2. Bank 1 refers to the bank that includes No. 1 cylinder.
3. If DTC P0023 is displayed, check the bank 2 VVT system for exhaust side circuit.
4. Bank 2 refers to the bank that does not include 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 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-382723-S29949148122011012800000) .

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1. CHECK DTC (DTC P0013 OR P0023) Connect the Techstream to the DLC3. Clear DTC after recording the freeze frame data and DTC. Allow the engine to idle and check DTC. Check that P0013 or P0023 is present. OK P0013 or P0023 is present NG --> CHECK FOR INTERMITTENT PROBLEMS OK: Go to next step
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR EXHAUST SIDE OF BANK 1 AND BANK 2) Disconnect the E52 or E62 OCV connector. Remove the OCV. Measure the resistance between the terminals of the OCV. Standard resistance 6.9 to 7.9 ohms at 20°C (68°F) Reinstall the OCV. NG --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR EXHAUST SIDE) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV FOR EXHAUST SIDE - ECM) Disconnect the E52 or E62 OCV connector. Disconnect the E6 and E8 ECM connectors. Measure the resistance. Standard resistance (check for open) Tester Connection Specified Condition E52-1 - E8-9 (OE1+) Below 1 ohms E52-2 - E8-8 (OE1-) Below 1 ohms E62-1 - E6-24 (OE2+) Below 1 ohms E62-2 - E6-23 (OE2-) Below 1 ohms Standard resistance (check for short) Tester Connection Specified Condition E52-1 or E8-9 (OE1+) - Body ground 10 kohms or higher E52-2 or E8-8 (OE1-) - Body ground 10 kohms or higher E62-1 or E6-24 (OE2+) - Body ground 10 kohms or higher E62-2 or E6-23 (OE2-) - Body ground 10 kohms or higher Reconnect the OCV connector. Reconnect the ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM

HINT

1. If DTC P0014 or P0015 is displayed, check the bank 1 VVT system for exhaust side circuit.
2. Bank 1 refers to the bank that includes No. 1 cylinder.
3. If DTC P0024 or P0025 is displayed, check the bank 2 VVT system for exhaust side circuit.
4. Bank 2 refers to the bank that does not include 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 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-382723-S29949148122011012800000) .

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 .

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 .

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1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the E74 or E70 A/F sensor connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Bank 1 sensor 1) Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) - 10 kohms or higher Standard resistance (Bank 2 sensor 1) Tester Connection Condition Specified Condition 1 (HA2A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA2A) - 4 (A2A-) - 10 kohms or higher Reconnect the A/F sensor connector. NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF A/F SENSOR) Disconnect the E74*1 or E70*2 A/F sensor connector. HINT: *1: Bank 1 sensor 1 *2: Bank 2 sensor 1 Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage (Bank 1 sensor 1) Tester Connection Specified Condition E74-2 (+B) - Body ground 11 to 14 V Standard voltage (Bank 2 sensor 1) Tester Connection Specified Condition E70-2 (+B) - Body ground 11 to 14 V Reconnect the A/F sensor connector. NG --> See step 4 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM, ECM - BODY GROUND) Check the wire harness and the connector between the ECM and the A/F sensor, and ECM and body ground. Disconnect the E74 or E70 A/F sensor connector. Disconnect the E45 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E74-1 (HA1A) - E45-6 (HA1A) Below 1 ohms E70-1 (HA2A) - E45-4 (HA2A) Below 1 ohms E45-5 (E04) - Body ground Below 1 ohms E45-3 (E05) - Body ground Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E74-1 (HA1A) or E45-6 (HA1A) - Body ground 10 kohms or higher E70-1 (HA2A) or E45-4 (HA2A) - Body ground 10 kohms or higher Reconnect the A/F sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM
4. INSPECT FUSE (A/F) Remove the A/F fuse from the No. 2 engine room relay block. Measure the resistance of the A/F fuse. Standard resistance Below 1 ohms Reinstall the A/F fuse. NG --> CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
5. INSPECT A/F RELAY Remove the A/F relay from the No. 2 engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage applied to terminals 1 and 2) Reinstall the A/F relay. NG --> REPLACE A/F RELAY OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (A/F SENSOR - A/F RELAY, A/F RELAY - A/F FUSE) Check the wire harness and the connector between the A/F sensor, A/F fuse and A/F relay. Remove the A/F fuse and A/F relay from the No. 2 engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition A/F fuse (2) - A/F relay (5) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition A/F fuse (2) or A/F relay (5) - Body ground 10 kohms or higher Reinstall the A/F fuse. Disconnect the E74 or E70 A/F sensor connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E74-2 (+B) - A/F relay (3) Below 1 ohms E70-2 (+B) - A/F relay (3) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E74-2 (+B) or A/F relay (3) - Body ground 10 kohms or higher E70-2 (+B) or A/F relay (3) - Body ground 10 kohms or higher Reinstall the A/F relay. Reconnect the A/F sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (A/F FUSE - BATTERY)

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 .

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1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Disconnect the K34*1 or K57*2, V35*3 heated oxygen (HO2) sensor connector. HINT: *1: Bank 1 Sensor 2 *2: Bank 2 Sensor 2 (2WD) *3: Bank 2 Sensor 2 (4WD) Measure the resistance according to the value(s) in the table below. Standard resistance (Bank 1 Sensor 2) Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E2) - 10 kohms or higher Standard resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition 1 (HT2B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT2B) - 4 (E2) - 10 kohms or higher Reconnect the HO2 sensor connector. NG --> REPLACE HEATED OXYGEN SENSOR OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF HO2 SENSOR) Disconnect the K34*1 or K57*2, V35*3 HO2 sensor connector. HINT: *1: Bank 1 sensor 2 *2: Bank 2 sensor 2 (2WD) *3: Bank 2 sensor 2 (4WD) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage (Bank 1 sensor 1) Tester Connection Specified Condition K34-2 (+B) - Body ground 11 to 14 V Standard voltage (Bank 2 sensor 1) Tester Connection Specified Condition K57-2 (+B) - Body ground 11 to 14 V V35-2 (+B) - Body ground 11 to 14 V Reconnect the HO2 sensor connector. NG --> See step 4 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Check the harness and connector between the ECM and HO2 sensor. Disconnect the K34*1 or K57*2, V35*3 HO2 sensor connector. HINT: *1: Bank 1 sensor 2 *2: Bank 2 sensor 2 (2WD) *3: Bank 2 sensor 2 (4WD) Disconnect the A7 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Terminal Connection Specified Condition K34-1 (HT1B) - A7-2 (HT1B) Below 1 ohms K57-1 (HT2B) - A7-1 (HT2B) Below 1 ohms V35-1 (HT2B) - A7-1 (HT2B) Below 1 ohms Standard resistance (Check for short) Terminal Connection Specified Condition K34-1 (HT1B) or A7-2 (HT1B) - Body ground 10 kohms or higher K57-1 (HT2B) or A7-1 (HT2B) - Body ground 10 kohms or higher V35-1 (HT2B) or A7-1 (HT2B) - Body ground 10 kohms or higher Reconnect the HO2 sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM
4. INSPECT EFI NO. 2 FUSE Remove the EFI No. 2 fuse from the No. 2 engine room relay block. Measure the resistance of the EFI No. 2 fuse. Standard resistance Below 1 ohms Reinstall the EFI No. 2 fuse. NG --> CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - EFI NO. 2 FUSE) Check the harness and connector between the HO2 sensor and EFI No. 2 fuse. Disconnect the K34*1 or K57*2, V35*3 HO2 sensor connector. HINT: *1: Bank 1 sensor 2 *2: Bank 2 sensor 2 (2WD) *3: Bank 2 sensor 2 (4WD) Remove the EFI No. 2 fuse from the No. 2 engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Terminal Connection Specified Condition K34-2 (+B) - EFI NO. 2 fuse (2) Below 1 ohms K57-2 (+B) - EFI NO. 2 fuse (2) Below 1 ohms V35-2 (+B) - EFI NO. 2 fuse (2) Below 1 ohms Standard resistance (Check for short) Terminal Connection Specified Condition K34-2 (+B) or EFI NO. 2 fuse (2) - Body ground 10 kohms or higher K57-2 (+B) or EFI NO. 2 fuse (2) - Body ground 10 kohms or higher V35-2 (+B) or EFI NO. 2 fuse (2) - Body ground 10 kohms or higher Reconnect the HO2 sensor connector. Reinstall the EFI No. 2 fuse. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - EFI NO. 2 FUSE) Remove the EFI No. 2 fuse from the No. 2 engine room relay block. Remove the integration relay from the No. 2 engine room junction block. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Terminal Connection Specified Condition EFI NO. 2 fuse (1) - 2A-8 Below 1 ohms Standard resistance (Check for short) Terminal Connection Specified Condition EFI NO. 2 fuse (1) or 2A-8 - Body ground 10 kohms or higher Reinstall the EFI No. 2 fuse. Reinstall the integration relay. NG --> REPLACE ENGINE ROOM NO. 2 RELAY BLOCK, JUNCTION BLOCK OK --> CHECK ECM POWER SOURCE CIRCUIT

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 .

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1. CHECK FUEL LEAK (HIGH PRESSURE SIDE) Check around and beneath the vehicle for gasoline leaks, fumes, etc. OK No gasoline leaks or fumes present. NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
2. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0087) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Current. Read the DTCs using the Techstream. Result Display (DTC output) Proceed to P0087 A P0087 and other DTCs B HINT: If any codes other than P0087 are output, perform troubleshooting for those DTCs first. B --> GO TO DTC CHART A: Go to next step
3. CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST YES --> DTC CAUSED BY RUNNING OUT OF FUEL NO: Go to next step
4. CHECK MISFIRE COUNT (CYLINDER #1, #2, #3, #4, #5 AND #6) Connect the Techstream to the DLC3. Start the engine and warm up the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. (Procedure "A") Allow the engine to idle. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1). If no misfire counts occur for any of the cylinders, perform the following procedure: (Procedure "B") Shift the gear selector lever to the D position. Repeat procedure "A" to "B" above. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1). Result Misfire Count Proceed to No misfire counts, or misfire counts occur randomly in all cylinders A Misfire counts occur in particular cylinder B B --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION A: Go to next step
5. CHECK FUEL PRESSURE SENSOR Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Target Fuel Pressure / Fuel Press. Check if the fuel pressure fluctuates when the target fuel pressure changes. HINT: The Control the Target Fuel Pressure operation lowers the target fuel pressure by 12.5% or increases the target fuel pressure by 25%. Result Inspection Result Proceed to Fuel pressure does not fluctuate A Fuel pressure fluctuates in accordance with tester operation B Fuel pressure pulsates C B --> See step 8 A --> REPLACE FUEL PRESSURE SENSOR C: Go to next step
6. CHECK FUEL PUMP (FUEL PUMP OPERATION) Check the fuel pump operation Refer to «ON-VEHICLE INSPECTION»(ref-382729-S01558181072011012800000) . NG --> REPLACE FUEL PUMP OK: Go to next step
7. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) Check the fuel pressure (low pressure side) Refer to «ON-VEHICLE INSPECTION»(ref-382729-S01558181072011012800000) . OK Idle 196 to 588 kPa (2 to 6 kgf/km 2 , 28 to 85 psi) 5 minutes after engine has stopped 147 kPa (1.5 kgf/km 2 , 21 psi) or more NG --> REPLACE FUEL PRESSURE REGULATOR OK: Go to next step
8. CHECK FUEL LEAK (HIGH PRESSURE FUEL LINE) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Fuel Press. Start the engine. Check if the fuel pressure fluctuates when the engine switch is turned off. HINT: Turn the engine switch off and on (IG) before checking the fuel pressure. Result Inspection Result Proceed to Fuel pressure is almost constant, or fluctuations are gradual A Fuel pressure drops suddenly B A --> See step 10 B: Go to next step
9. CHECK FUEL RELIEF VALVE Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Fuel Press. Start the engine. Check the fuel pressure fluctuations when the fuel hose is pressed with your fingers. Result Inspection Result Proceed to Pressing the hose raises the fuel pressure slightly A Fuel pressure does not fluctuate B A --> REPLACE FUEL RELIEF VALVE B: Go to next step
10. REPLACE FUEL PUMP (FOR HIGH PRESSURE) NEXT: Go to next step
11. CHECK IF DTC OUTPUT REOCCURS (SEE IF DTC P0087 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Start the engine. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes / Current. Read the DTCs using the Techstream. Result Display (DTC output) Proceed to P0087 A No output B B --> END A --> 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 .

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1. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / MAF. Read the values displayed on the Techstream. Result Mass Air Flow Rate (g/sec.) Proceed to 0.0 A 271.0 or more B Between 1.0 and 270.0* C HINT: *: The value must change when the throttle valve is open or closed. C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 8 A: Go to next step
2. INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Disconnect the E83 Mass Air Flow (MAF) meter connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E83-3 (+B) - Body ground 9 to 14 V Reconnect the MAF meter connector. NG --> See step 6 OK: Go to next step
3. INSPECT ECM (VG VOLTAGE) Start the engine. Measure the voltage according to the value(s) in the table below. HINT: The transmission gear selector lever should be in the P or N position and the A/C switch should be turned OFF. Standard voltage Tester Connection Condition Specified Condition E6-27 (VG) - E6-26 (E2G) Engine idling 0.5 to 3.0 V OK --> REPLACE ECM NG: Go to next step
4. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the E83 MAF meter connector. Disconnect the E6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E83-5 (VG) - E6-27 (VG) Below 1 ohms E83-4 (E2G) - E6-26 (E2G) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E83-5 (VG) or E6-27 (VG) - Body ground 10 kohms or higher Reconnect the MAF meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MASS AIR FLOW METER
5. INSPECT EFI NO. 2 FUSE See step 4 NG --> CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - EFI NO. 2 FUSE) Disconnect the E83 MAF meter connector. Remove the EFI No. 2 fuse from the No. 2 engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E83-3 (+B) - EFI NO. 2 fuse (2) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E83-3 (+B) or EFI NO. 2 fuse (2) - Body ground 10 kohms or higher Reinstall the EFI No. 2 fuse. Reconnect the MAF meter connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - EFI NO. 2 FUSE) See step 6 NG --> REPLACE ENGINE ROOM NO. 2 RELAY BLOCK, JUNCTION BLOCK OK --> CHECK ECM POWER SOURCE CIRCUIT
8. INSPECT ECM (SENSOR GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition E6-26 (E2G) - Body ground Below 1 ohms NG --> REPLACE ECM OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the E83 MAF meter connector. Disconnect the E6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E83-5 (VG) - E6-27 (VG) Below 1 ohms E83-4 (E2G) - E6-26 (E2G) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E83-5 (VG) or E6-27 (VG) - Body ground 10 kohms or higher Reconnect the MAF meter connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MASS AIR FLOW METER

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 216

Scheme 217

Scheme 218

Scheme 219

1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC Output) Proceed to P0110 A P0112 B P0113 C C --> See step 3 B --> See step 5 A: Go to next step
2. READ VALUE USING TECHSTREAM (INTAKE AIR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard Same as actual Intake Air Temperature (IAT). Result Temperature Displayed Proceed to -40 °C (-40°F) A 140°C (284°F) or higher B Same as actual IAT C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 5 A: Go to next step
3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the E83 MAF meter connector. Connect terminals THA and E2 of the MAF meter wire harness side connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard 140°C (284°F) or higher Reconnect the MAF meter connector. OK --> CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER NG: Go to next step
4. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN ECM) Disconnect the E83 MAF meter connector. Connect terminals THA and ETHA of the E6 ECM connector. HINT: Before checking, do visual and contact pressure checks on the ECM connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard 140°C (284°F) or higher Reconnect the MAF meter connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM
5. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the E83 MAF meter connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard -40°C (-40°F) or higher Reconnect the MAF meter connector. OK --> REPLACE MASS AIR FLOW METER NG: Go to next step
6. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN ECM) Disconnect the E6 ECM connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Intake Air. Read the value displayed on the Techstream. Standard -40°C (-40°F) or higher Reconnect the ECM connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> REPLACE ECM

Scheme 220

1. The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes (Scheme 220)
2. The IAT sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
3. Resistor R and the IAT sensor are connected in series. When the resistance value of the IAT sensor changes, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.

HINT

Read freeze frame data using 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 221

Scheme 222

Scheme 223

Scheme 224

1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P0115 A P0117 B P0118 C C --> See step 3 B --> See step 5 A: Go to next step
2. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard Between 80°C and 97°C (176°F and 207°F) with warm engine. Result Temperature Displayed Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Between 80°C and 97°C (176°F and 207°F) C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 5 A: Go to next step
3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the E71 Engine Coolant Temperature (ECT) sensor connector. Connect terminals 1 and 2 of the ECT sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard 140°C (284°F) or higher. Reconnect the ECT sensor connector. OK --> CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR NG: Go to next step
4. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN ECM) Disconnect the E71 ECT sensor connector. Connect terminals THW and ETHW of the E6 ECM connector. HINT: Before checking, do visual and contact pressure checks on the ECM connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard 140°C (284°F) or higher. Reconnect the ECT sensor connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM
5. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the E71 ECT sensor connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard -40°C (-40°F) Reconnect the ECT sensor connector. OK --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR NG: Go to next step
6. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN ECM) Disconnect the E6 ECM connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the value displayed on the Techstream. Standard -40°C (-40°F) Reconnect the ECM connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> REPLACE ECM

HINT

1. If any of DTCs P0115, P0117, P0118 or P0125 are set simultaneously with DTC P0116, the ECT 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 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-382723-S29949148122011012800000) .

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 225

Scheme 226

1. READ VALUE USING TECHSTREAM (THROTTLE POS AND THROTTLE POS #2) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following items: Powertrain / Engine and ECT / Data List / Throttle Sensor Position and Throttle Position No. 2. Check the values displayed on the Techstream. Result TP#1 (VTA1) When Accelerator Pedal Released TP#2 (VTA2) When Accelerator Pedal Released TP#1 (VTA1) When Accelerator Pedal Depressed TP#2 (VTA2) When Accelerator Pedal Depressed Trouble area Proceed to 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V E2 circuit open A 0 to 0.2 V, or 4.5 to 5.0 V Approximately 2.55 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V Approximately 2.55 V (Fail-safe) VTA1 circuit open or ground short A Approximately 0.93 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V Approximately 0.93 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V VTA2 circuit open or ground short A 0.5 to 1.1 V 2.1 to 3.1 V 3.3 to 4.9 V 4.6 to 5.0 V TP sensor circuit normal B HINT: TP#1 denotes Throttle Position, and TP#2 denotes Throttle Position No. 2. B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the E39 throttle body connector. Disconnect the E8 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E39-5 (VC) - E8-27 (VCTA) Below 1 ohms E39-6 (VTA) - E8-25 (VTA1) Below 1 ohms E39-4 (VTA2) - E8-24 (VTA2) Below 1 ohms E39-3 (E2) - E8-26 (ETA) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E39-5 (VC) or E8-27 (VCTA)- Body ground 10 kohms or higher E39-6 (VTA) or E8-25 (VTA1) - Body ground 10 kohms or higher E39-4 (VTA2) or E8-24 (VTA2) - 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 ECM (VC VOLTAGE) Disconnect the E39 throttle body connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E8-27 (VCTA) - E8-26 (ETA) 4.5 to 5.0 V Reconnect the throttle body connector. NG --> REPLACE ECM OK: Go to next step
4. REPLACE THROTTLE BODY Replace the throttle body. Refer to «REMOVAL - Step 1»(ref-382728-S35304897882011012800000) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs Refer to «DTC CHECK / CLEAR»(ref-382723-S32023580312011012800000) . Start the engine. Allow the engine to idle for 15 seconds or more. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC Output) Proceed to P0120, P0122, P0123, P0220, P0222, P0223 and/or P2135 A No output B B --> SYSTEM OK A --> 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

1. If any of DTCs P0115, P0116, P0117 or P0118 are set simultaneously with DTC P0125, the Engine Coolant Temperature (ECT) 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 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-382723-S29949148122011012800000) .

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 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 Ssensor 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. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.
6. Perform the Active Test operation with the engine in an idling condition (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 B1 S1 or AFS Voltage B2 S1 and O2S B1 S2 or O2S B2 S2) 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 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 pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

Scheme 227

Scheme 228

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, select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 or AFS Voltage B2 S1 and O2S B1 S2 or O2S B2 S2, then press the graph button on the Data List screen.

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-382723-S29949148122011012800000) .
2. If the OX1B or OX2B wire from the ECM connector is short-circuited to the +B wire, DTC P0136 or P0156 may be set.

Scheme 229

Scheme 230

Scheme 231

Scheme 232

Scheme 233

Scheme 234

1. READ DTC OUTPUT (DTC P0136, P0137, P0138, P0139, P0156, P0157, P0158 OR P0159) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Select: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P0138 and P0158 A P0137 or P0157 B P0136 or P0156 C P0139 and P0159 D D --> See step 17 C --> See step 6 B --> See step 8 A: Go to next step
2. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / A/F Control System / O2S B1 S2 or O2S B2 S2. Allow the engine to idle. Read the heated oxygen sensor output voltage while idling. Result Result Proceed to 1.0 V or more A Less than 1.0 V B B --> See step 5 A: Go to next step
3. 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 (Bank 1 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) Standard resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Reconnect the heated oxygen sensor connector. NG --> REPLACE HEATED OXYGEN SENSOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Bank 1 Sensor 2) Tester Connection Condition Specified Condition A7-2 (HT1B) - A7-28 (OX1B) Always 10 kohms or higher Standard resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition A7-1 (HT2B) - A7-17 (OX2B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM
5. INSPECT AIR FUEL RATIO SENSOR HINT: This air fuel ratio sensor test is to check the air fuel ratio sensor current during the fuel-cut. When the sensor is normal, the sensor current will indicate below 3.0 mA in this test. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Drive the vehicle according to the drive pattern listed below: Warm up the engine until the engine coolant temperature reaches 75°C (167°F) or more. Drive the vehicle at 40 mph (64 km/h) or more and decelerate the vehicle for 5 seconds or more. Repeat the deceleration above at least 3 times. Select the following menu items: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details. Confirm that RANGE B1S1 is either PASS or FAIL. If the Techstream shows Incomplete, recheck RANGE B1S1 after performing the drive pattern. Select RANGE B1S1. Read the test value. Standard current Less than 3.0 mA HINT: If the Techstream shows Incomplete again, increase the vehicle speed and use the second gear to decelerate the vehicle. Refer to CONFIRMATION DRIVING PATTERN. NG --> See step 14 OK --> See step 11
6. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Start the engine. Select the following menu items: Powertrain / Engine and ECT / Data List / O2S B1 S2 or O2S B2 S2. After warming up the engine, run the engine at an engine speed of 2500 rpm for 3 minutes. Read the output voltage of the heated oxygen sensor when the engine rpm is suddenly increased. HINT: Quickly accelerate the engine to 4000 rpm 3 times depressing the accelerator pedal. Standard Fluctuates between 0.4 V or less and 0.5 V or more. NG --> See step 8 OK: Go to next step
7. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Start the engine and warm it up. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. 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% and +12%. The injection volume can be changed in 1% graduations within the range. The air fuel ratio sensor is displayed as AFS Voltage B1 S1 or AFS Voltage B2 S1, and the heated oxygen sensor is displayed as O2S B1 S2 or O2S B2 S2 on the Techstream. Result Tester Display Voltage Proceed to AFS Voltage B1 S1 or AFS Voltage B2 S1 (Air fuel ratio sensor) Alternates between more and less than 3.3 V OK Remains at more than 3.3 V NG Remains at less than 3.3 V NG HINT: A normal heated oxygen sensor voltage (O2S B1 S2 or O2S B2 S2) reacts in accordance with increases and decreases in fuel injection volumes. When the air fuel ratio sensor voltage remains at either less or more than 3.3 V despite the heated oxygen sensor indicating a normal output voltage, the air fuel ratio sensor is malfunctioning. NG --> See step 14 OK --> CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO
8. CHECK FOR EXHAUST GAS LEAK OK No gas leak. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
9. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) NG --> REPLACE HEATED OXYGEN SENSOR OK: Go to next step
10. 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) Bank 1 Bank 2 (2WD) Bank 2 (4WD) Tester Connection Condition Specified Condition K34-1 (HT1B) - A7-2 (HT1B) Always Below 1 ohms K34-3 (OX1B) - A7-28 (OX1B) K34-4 (E2) - A7-29 (O1B-) Tester Connection Condition Specified Condition K57-1 (HT2B) - A7-1 (HT2B) Always Below 1 ohms K57-3 (OX2B) - A7-17 (OX2B) K57-4 (E2) - A7-18 (O2B-) Tester Connection Condition Specified Condition V35-1 (HT2B) - A7-1 (HT2B) Always Below 1 ohms V35-3 (OX2B) - A7-17 (OX2B) V35-4 (E2) - A7-18 (O2B-) Standard resistance (Check for short) Bank 1 Bank 2 (2WD) Bank 2 (4WD) Tester Connection Condition Specified Condition K34-1 (HT1B) or A7-2 (HT1B) - Body ground Always 10 kohms or higher K34-3 (OX1B) or A7-28 (OX1B) - Body ground Tester Connection Condition Specified Condition K57-1 (HT2B) or A7-1 (HT2B) - Body ground Always 10 kohms or higher K57-3 (OX2B) or A7-17 (OX2B) - Body ground Tester Connection Condition Specified Condition V35-1 (HT2B) or A7-1 (HT2B) - Body ground Always 10 kohms or higher V35-3 (OX2B) or A7-17 (OX2B) - Body ground Reconnect the heated oxygen sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor Refer to «COMPONENTS»(ref-382716-S07011455542011012800000) NEXT: Go to next step
12. PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to CONFIRMATION DRIVING PATTERN. NEXT: Go to next step
13. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137, P0138, P0156, P0157 or P0158. Check that DTC MONITOR is NORMAL. If DTC MONITOR is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Result Result Proceed to No output A P0136, P0137, P0138, P0156, P0157 or P0158 detected B B --> REPLACE AIR FUEL RATIO SENSOR A --> END
14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor Refer to «REMOVAL»(ref-382716-S20672511762011012800000) . NEXT: Go to next step
15. PERFORM CONFIRMATION DRIVING PATTERN NEXT: Go to next step
16. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137, P0138, P0156, P0157 or P0158. Check that DTC MONITOR is NORMAL. If DTC MONITOR is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Result Result Proceed to No output A P0136, P0137, P0138, P0156, P0157 or P0158 detected B B --> REPLACE HEATED OXYGEN SENSOR A --> END
17. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / A/F Control System / O2S B1 S2 or O2S B2 S2. After warming up the engine, run the engine at an engine speed of 2500 rpm for 3 minutes. Engine is idling. Depress the accelerator pedal quickly until the engine speed reaches 2500 rpm 3 times. Read the output voltage of the heated oxygen sensor. Result Result Proceed to Higher than 1.0 V A Below 1.0 V B B --> See step 20 A: Go to next step
18. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the K34*1 or K57*2, V35*3 heated oxygen (HO2) sensor connector. *1: Bank 1 Sensor 2 *2: Bank 2 Sensor 2 (2WD) *3: Bank 2 Sensor 2 (4WD) Measure the resistance according to the value(s) in the table below. Standard resistance (Bank 1 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX1B) Standard resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition 2 (+B) - 4 (E2) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Reconnect the HO2 sensor connector. NG --> REPLACE HEATED OXYGEN SENSOR OK: Go to next step
19. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes or more. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Bank 1 Sensor 2) Tester Connection Condition Specified Condition A7-2 (HT1B) - A7-28 (OX1B) Always 10 kohms or higher Standard resistance (Bank 2 Sensor 2) Tester Connection Condition Specified Condition A7-1 (HT2B) - A7-17 (OX2B) Always 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM
20. READ VALUE USING DTC OUTPUT (DTC P0139 OR P0159 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Clear the DTC Refer to «DTC CHECK / CLEAR»(ref-382723-S32023580312011012800000) . Warm-up the engine until the engine coolant temperature is 75°(167°F) or more. Drive the vehicle 40 to 75 mph (64 to 120 km/h) for at 10 minutes. Drive the vehicle 40 mph (64 km/h) or more and decelerate the vehicle for 5 seconds or more. Perform this 3 times. Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0139 and P0159. Check that DTC MONITOR is NORMAL. If DTC MONITOR is Incomplete, perform the driving pattern increasing the vehicle speed and using the second gear to decelerate the vehicle. Result Display (DTC Output) Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0139 or P0159 is output) B B --> REPLACE HEATED OXYGEN SENSOR A --> CHECK FOR INTERMITTENT PROBLEMS

HINT

The 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. Connect the Techstream to the DLC3.
2. Start the engine and turn the Techstream on.
3. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
4. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.
5. 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 fuel injection volume.)
6. Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2 or AFS Voltage B2 S1 and O2S B2 S2) 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 fuel 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 click to open the image click to open the image - 2 click to open the image click to open the image Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 click to open the image click to open the image Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 click to open the image click to open the image 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, selecting the following menu items on the Techstream: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F B1 S1 and O2S B1 S2 or A/F B2 S1 and O2S B2 S2; then press the graph button on the Data List screen.

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-382723-S29949148122011012800000) .
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 235

Scheme 236

Scheme 237

Scheme 238

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P0171, P0172, P0174, P0175, P1170 OR P117B) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to P0171, P0172, P0174, P1175, P1170 or P117B A P0171, P0172, P0174, P0175, P1170, P117B and other DTCs B HINT: If any DTCs other than P0171, P0172, P0174, P0175, P1170 and P117B are output, troubleshoot those DTCs first. B --> GO TO DTC CHART A: Go to next step
2. PERFORM SYSTEM CHECK (D-4S TEST) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Port. Read the value Short FT #1 and Long FT #1 and/or Short FT #2 and Long FT #2. OK Short FT #1 (#2) + Long FT #1 (#2) = Between -19% and +19% Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. Read the value Short FT #1 and Long FT #1 and/or Short FT #2 and Long FT #2. OK Short FT #1 (#2) + Long FT #1 (#2) = Between -19% and +19% Result Item Proceed to PORT DIRECT OK OK A OK NG B NG OK C NG NG D D --> See step 5 C --> See step 24 B --> See step 20 A: Go to next step
3. CHECK IF VEHICLE HAS RUN OUT OF FUEL IN PAST YES --> DTC CAUSED BY RUNNING OUT OF FUEL NO: Go to next step
4. CHECK F/PMP RELAY Remove the F/PMP relay from the engine room No. 2 relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 4 10 kohms or higher 3 - 4 Below 1 ohms (when battery voltage applied to terminals 1 and 2) Reinstall the F/PMP relay. NG --> REPLACE FUEL PUMP RELAY OK --> CHECK FOR INTERMITTENT PROBLEMS
5. CHECK VENTILATION HOSE OK Ventilation hose is connected correctly and is not damaged. NG --> REPAIR OR REPLACE VENTILATION HOSE OK: Go to next step
6. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
7. PERFORM ACTIVE TEST USING TECHSTREAM (A/F CONTROL) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds. Select the following menu items: 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 idling (press the RIGHT or LEFT button to change the fuel injection volume). Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1 S1 and O2S B1 S2 or AFS Voltage B2 S1 and O2S B2 S2) displayed on the Techstream. HINT: 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%. Each sensor reacts in accordance with increases and decreases in the fuel injection volume. Tester Display (Sensor) Injection Volume Status Voltage AFS Voltage B1 S1 or AFS Voltage B2 S1 (A/F) +25% Rich Less than 3.1 V AFS Voltage B1 S1 or AFS Voltage B2 S1 (A/F) -12.5% Lean More than 3.4 V O2S B1 S2 or O2S B2 S2 (HO2) +25% Rich More than 0.55 V O2S B1 S2 or O2S B2 S2 (HO2) -12.5% Lean Less than 0.4 V Result Status AFS Voltage B1 S1 or AFS Voltage B2 S1 Status O2S B1 S2 or O2S B2 S2 A/F Condition and A/F Sensor Condition Misfire Suspected Trouble Area Proceed to Lean/Rich Lean/Rich Normal - - A Lean Lean Actual air fuel ratio lean May occur Ventilation valve and hose Ventilation hose connections Injector for port injection Gas leakage from exhaust system Air induction system Fuel pressure Mass Air Flow (MAF) meter Engine Coolant Temperature (ECT) sensor A Rich Rich Actual air fuel ratio rich - Gas leakage from exhaust system Ignition system Fuel pressure MAF meter ECT sensor A Lean Lean/Rich A/F sensor malfunction - A/F sensor B Rich Lean/Rich A/F sensor malfunction - A/F sensor B Lean: During Control the Injection Volume for A/F Sensor, the A/F sensor output voltage (AFS) is consistently more than 3.4 V, and the HO2 sensor output voltage (O2S) is consistently less than 0.4 V. Rich: During Control the Injection Volume for A/F Sensor, the AFS is consistently less than 3.1 V, and the O2S is consistently more than 0.55 V. B --> See step 11 A: Go to next step
8. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp. Read the Coolant Temp twice, when the engine is both cold and warmed up. Standard With cold engine Same as ambient air temperature. With warm engine Between 75 and 95°C (167 and 203°F) NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
9. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter Refer to «INSPECTION»(ref-382728-S30074359112011012800000) . NG --> REPLACE MASS AIR FLOW METER OK: Go to next step
10. CHECK FOR EXHAUST GAS LEAK OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST SYSTEM OK: Go to next step
11. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) See step 1 NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
12. INSPECT A/F RELAY See step 5 NG --> REPLACE A/F RELAY OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the E74 and E70 A/F sensor connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E74-2 (+B) - Body ground 11 to 14 V E70-2 (+B) - Body ground 11 to 14 V Turn the engine switch off. Disconnect the E45 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E74-1 (HA1A) - E45-6 (HA1A) Below 1 ohms E74-3 (A1A+) - E45-18 (A1A+) Below 1 ohms E74-4 (A1A-) - E45-17 (A1A-) Below 1 ohms E70-1 (HA2A) - E45-4 (HA2A) Below 1 ohms E70-3 (A2A+) - E45-28 (A2A+) Below 1 ohms E70-4 (A2A-) - E45-27 (A2A-) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E74-1 (HA1A) or E45-6 (HA1A) - Body ground 10 kohms or higher E74-3 (A1A+) or E45-18 (A1A+) - Body ground 10 kohms or higher E74-4 (A1A-) or E45-17 (A1A-) - Body ground 10 kohms or higher E70-1 (HA2A) or E45-4 (HA2A) - Body ground 10 kohms or higher E70-3 (A2A+) or E45-28 (A2A+) - Body ground 10 kohms or higher E70-4 (A2A-) or E45-27 (A2A-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
14. REPLACE AIR FUEL RATIO SENSOR Replace the A/F sensor Refer to «REMOVAL»(ref-382716-S20672511762011012800000) . NEXT: Go to next step
15. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs Refer to «DTC CHECK / CLEAR»(ref-382723-S32023580312011012800000) . Switch the ECM from normal mode to check mode using the Techstream Refer to «CHECK MODE PROCEDURE»(ref-382723-S26645782532011012800000) . Start the engine and warm it up with all the accessories switched off. (Procedure "A") Drive the vehicle at between 38 mph and 75 mph (61 km/h and 120 km/h) and at an engine speed of between 1400 rpm and 3200 rpm for 3 to 5 minutes. (Procedure "B") HINT: If the system is still malfunctioning, the MIL will be illuminated during procedure "B". NOTE: If the conditions in this test are not strictly followed, no malfunction will be detected. NEXT: Go to next step
16. CHECK WHETHER DTC OUTPUT RECURS (DTC P0171, P0172, P0174, P0175, P1170 OR P117B) On the Techstream, select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to No output A P0171, P0172, P0174, P0175, P1170 or P117B B A --> END B: Go to next step
17. CHECK FUEL PRESSURE (LOW PRESSURE) Check the fuel pressure Refer to «ON-VEHICLE INSPECTION»(ref-382729-S01558181072011012800000) . OK --> REPLACE ECM NG: Go to next step
18. CHECK FUEL PUMP OPERATION Check the fuel pump operation Refer to «ON-VEHICLE INSPECTION»(ref-382729-S01558181072011012800000) . NG --> REPLACE FUEL PUMP OK: Go to next step
19. CHECK FOR FUEL LEAK (LOW PRESSURE SIDE) OK No leakage NG --> REPAIR OR REPLACE FUEL SYSTEM OK --> CHECK AND REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND FILTER
20. CHECK FUEL PRESSURE SENSOR Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Select the following menu items: Powertrain / Engine and ECT / Data List / Fuel Press. While revving up the engine, check that the fuel pressure fluctuates. Standard Idling 3 to 5 MPa (30.6 to 51.0 kgf/cm 2 , 435 to 725 psi) 2000 rpm (No load) 7 to 9 MPa (71.4 to 91.8 kgf/cm 2 , 1016 to 1306 psi) HINT: The A/C switch and all accessory switches should be off, and the transmission gear selector lever should be in the N or P position, and the engine should be fully warmed up. NG --> REPAIR OR REPLACE FUEL SYSTEM FOR HIGH PRESSURE (REFER TO DTC P0087 AND P0088) OK: Go to next step
21. PERFORM ACTIVE TEST BY TECHSTREAM (D-4S TEST) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. HINT: The A/C switch and all accessory switches should be off, and the transmission gear selector lever should be in the N or P position, and the engine should be fully warmed up. Read the value Short FT #1, Long FT #1, Short FT #2, Long FT #2 and Fuel Pump Duty (D4). Result Item Proceed to FUEL PUMP D4 SHORT FT #1 + LONG FT #1 SHORT FT #2 + LONG FT #2 40% or more -20% or less -20% or less A 10% or less +20% or more +20% or more A 40% or more +20% or more +20% or more B 10% or less -20% or less -20% or less C 10% to 40% - - D C --> REPLACE ECM B --> See step 23 A --> REPLACE FUEL PRESSURE SENSOR D: Go to next step
22. PERFORM ACTIVE TEST BY TECHSTREAM (D-4S TEST) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. HINT: The A/C switch and all accessory switches should be off, and the transmission gear selector lever should be in the N or P position, and the engine should be fully warmed up. Read the value Short FT #1, Long FT #1, Short FT #2, Long FT #2 and Fuel Pump Duty (D4). Result Item Proceed to Fuel Pump Duty (D4) Short FT #1 + Long FT #1 Short FT #2 + Long FT #2 10% to 40% -25% or less -25% or less A 10% to 40% -25% or less -25% to +25% B 10% to 40% -25% to +25% -25% or less C 10% to 40% +30% or more +30% or more A 10% to 40% +25% or more -25% to +25% B 10% to 40% -25% to +25% +25% or more C 10% to 40% -25% to +25% -25% to +25% D D --> CHECK FOR INTERMITTENT PROBLEMS C --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION (BANK 2) B --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION (BANK 1) A --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION (ALL CYLINDERS)
23. CHECK FUEL RELIEF VALVE Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Select the following menu items: Powertrain / Engine and ECT / Data List / Fuel Press. Check that the fuel pressure fluctuates when the fuel hose is squeezed with your fingers. Result Inspection Result Proceed to Squeezing the hose raises the fuel pressure slightly A Fuel pressure does not fluctuate B A --> REPLACE FUEL RELIEF VALVE B --> REPLACE FUEL PUMP FOR HIGH PRESSURE
24. CHECK FUEL INJECTOR FOR PORT INJECTION Check the injection volume (whether fuel volume is high or low, and whether injection pattern is poor). NG --> REPLACE FUEL INJECTOR FOR PORT INJECTION 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 .

Scheme 239

Scheme 240

1. READ VALUE USING TECHSTREAM (FUEL PRESSURE) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Fuel Press. Read the values. Standard pressure 3 to 5 MPa (30.6 to 51 kgf/cm 2 , 435 to 725 psi) Result Fuel Pressure (MPa) Proceed to 19.6 or more A 0.0 B OK (3 to 5 MPa [30.6 to 51 kgf/cm 2 , 435 to 725 psi]) * C HINT: *: The value must change when the engine is running or stopped. C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 3 A: Go to next step
2. INSPECT FUEL PRESSURE SENSOR (VC VOLTAGE) Disconnect the E72 fuel pressure sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E72-3 (VC) - E72-1 (E2) 4.5 to 5.5 V NG --> See step 4 OK: Go to next step
3. INSPECT FUEL PRESSURE SENSOR Inspect the fuel pressure sensor Refer to «INSPECTION»(ref-382714-S23981750412011012800000) . NG --> REPLACE FUEL PRESSURE SENSOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (ECM - FUEL PRESSURE SENSOR) Disconnect the E45 ECM connector. Disconnect the E72 fuel pressure sensor connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E45-31 (VCPR) - E72-3 (VC) Below 1 ohms E45-29 (PR) - E72-2 (PR) Below 1 ohms E45-30 (EPR) - E72-1 (E2) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E45-31 (VCPR) or E72-3 (VC) - Body ground 10 kohms or higher E45-29 (PR) or E72-2 (PR) - Body ground 10 kohms or higher Reconnect the fuel pressure sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 .

Scheme 241

Scheme 242

Scheme 243

Scheme 244

1. INSPECT INJECTOR DRIVER (POWER SOURCE OF EDU) Disconnect the E54 injector driver (EDU) connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E54-1 (+B) - Body ground 11 to 14 V E54-2 (+B2) - Body ground 11 to 14 V Reconnect the injector driver (EDU) connector. NG --> See step 7 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (EDU - FUEL INJECTOR FOR DIRECT INJECTION) Disconnect the I1 and J1 EDU connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition I1-2 (IJ1+) - I1-5 (IJ1-) 20°C (68°F) 2.01 to 2.31 ohms J1-3 (IJ2+) - J1-6 (IJ2-) 20°C (68°F) 2.01 to 2.31 ohms I1-3 (IJ3+) - I1-6 (IJ3-) 20°C (68°F) 2.01 to 2.31 ohms J1-1 (IJ4+) - J1-4 (IJ4-) 20°C (68°F) 2.01 to 2.31 ohms I1-1 (IJ5+) - I1-4 (IJ5-) 20°C (68°F) 2.01 to 2.31 ohms J1-2 (IJ6+) - J1-5 (IJ6-) 20°C (68°F) 2.01 to 2.31 ohms Reconnect the EDU connectors. NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - EDU) Disconnect the E6, E8 and E45 connectors. Disconnect the E53 injector driver (EDU) connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E8-16 (#1D) - E53-3 (#10) Below 1 ohms E6-14 (#2D) - E53-2 (#20) Below 1 ohms E8-12 (#3D) - E53-1 (#30) Below 1 ohms E6-11 (#4D) - E53-12 (#40) Below 1 ohms E8-30 (#5D) - E53-11 (#50) Below 1 ohms E6-28 (#6D) - E53-10 (#60) Below 1 ohms E45-26 (IJF1) - E53-6 (IJF1) Below 1 ohms E45-25 (IJF2) - E53-5 (IJF2) Below 1 ohms E45-16 (IJF3) - E53-4 (IJF3) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E8-16 (#1D) or E53-3 (#10) - Body ground 10 kohms or higher E6-14 (#2D) or E53-2 (#20) - Body ground 10 kohms or higher E8-12 (#3D) or E53-1 (#30) - Body ground 10 kohms or higher E6-11 (#4D) or E53-12 (#40) - Body ground 10 kohms or higher E8-30 (#5D) or E53-11 (#50) - Body ground 10 kohms or higher E6-28 (#6D) or E53-10 (#60) - Body ground 10 kohms or higher E45-26 (IJF1) or E53-6 (IJF1) - Body ground 10 kohms or higher E45-25 (IJF2) or E53-5 (IJF2) - Body ground 10 kohms or higher E45-16 (IJF3) or E53-4 (IJF3) - Body ground 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. REPLACE INJECTOR DRIVER Replace injector driver Refer to «REMOVAL»(ref-382714-S33081670742011012800000) NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC Output) Proceed to P0201, P0202, P0203, P0204, P0205, P0206, P062D or P12FF A No output B B --> END A --> REPLACE ECM
6. INSPECT FUEL INJECTOR FOR DIRECT INJECTION Check the resistance of the fuel injector for direct injection Refer to «INSPECTION»(ref-382714-S14500762472011012800000) . NG --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR
7. INSPECT INTEGRATION NO. 1 RELAY Remove the integration relay from the engine room No. 2 junction block. Inspect the INJ fuse. Remove the INJ fuse from the integration relay. Measure the resistance of the INJ fuse. Standard resistance Below 1 ohms Reinstall the INJ fuse. Inspect the INJ relay. Measure the resistance of the INJ relay. Standard resistance Tester Connection Specified Condition 2C-1 - 2A-4 10 kohms or higher Below 1 ohms (Apply battery voltage between terminals 2A-3 and 2A-1) Reinstall the integration relay. NG --> REPLACE INTEGRATION NO. 1 RELAY OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - INJECTOR DRIVER)

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 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-382723-S29949148122011012800000) .
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 to #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 and 8 cylinder engines, the ECM intentionally does not set the specific misfiring cylinder DTCs at high engine RPM. If misfires occur only in high engine RPM areas, only DTC P0300 is set. In the event of DTC P0300 being present, perform the following operations: Clear the DTC Refer to «DTC CHECK / CLEAR»(ref-382723-S32023580312011012800000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the Techstream. Repair the cylinder(s) that has a high misfiring rate 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 has occurred only while warming up the engine.
10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs to be detected.

Scheme 245

1. CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO MISFIRE DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC output) Proceed to P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 A P0300, P0301, P0302, P0303, P0304, P0305 and/or P0306 and other DTCs B HINT: If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305 and P0306 are output, troubleshoot those DTCs first. B --> GO TO DTC CHART A: Go to next step
2. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Misfire / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load (engine load) values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
3. CHECK PCV HOSE (HOSE CONNECTIONS) OK PCV hose is connected correctly and is not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
4. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the valve displayed on the Techstream. Result Data List Tester Display Proceed to Catalyst OT MF F/C Avail A Not Avl B B --> See step 6 A: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and either idling or being revved within 3000 rpm. NEXT: Go to next step
6. CHECK MISFIRE COUNT OF PORT INJECTION (CYLINDER #1 TO #6) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Port. (Procedure "A") Allow the engine to idle. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1 Misfire Count). If no misfire counts occur for any of the cylinders, perform the following procedure: (Procedure "B") Shift the gear selector lever to the D position. Repeat procedure "A" to "B" above. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1 Misfire Count). Result Misfire count Proceed to 1 or 2 cylinders have misfire counts A 3 cylinders or more have misfire counts A There are no misfire counts B B --> See step 18 A: Go to next step
7. CHECK MISFIRE COUNT OF DIRECT INJECTION (CYLINDER #1 TO #6) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. (Procedure "A") Allow the engine to idle. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1 Misfire Count). If no misfire counts occur for any of the cylinders, perform the following procedure: (Procedure "B") Shift the gear selector lever to the D position. Repeat procedure "A" to "B" above. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1 Misfire Count). Result Misfire Count Proceed to Port Direct 1 or 2 cylinders have misfire counts 1 or 2 cylinders have misfire counts A 3 cylinders or more have misfire counts 3 cylinders or more have misfire counts B 1 or 2 cylinders have misfire counts There are no misfire counts C 3 cylinders or more have misfire counts There are no misfire counts D D --> See step 16 C --> REPLACE FUEL INJECTOR FOR PORT INJECTION (MISFIRING CYLINDER) B --> See step 12 A: Go to next step
8. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Measure the spark plug electrode gap. Standard gap 1.0 to 1.4 mm (0.039 to 0.055 in.) Check the electrode for carbon deposits. Recommended spark plug: Manufacture Product DENSO FK20HBR11 NOTE: If the electrode gap is larger than standard, replace the spark plug. Do not adjust the electrode gap. Reinstall the ignition coil and the spark plug. NG --> REPLACE SPARK PLUG OK: Go to next step
9. CHECK FOR SPARK AND IGNITION Disconnect the injector connectors, in order to prevent the engine from starting. Install the spark plug to the ignition coil. Attach the spark plug assembly to the cylinder head cover. Crank the engine for less than 2 seconds and check the spark. OK Sparks jump across the electrode gap. NG --> See step 11 OK: Go to next step
10. CHECK CYLINDER COMPRESSION PRESSURE (MALFUNCTION CYLINDER) Measure the cylinder compression pressure of the misfiring cylinder. OK --> REPLACE ECM NG --> REPAIR OR REPLACE ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION
11. CHANGE NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER Change the installed spark plug to a spark plug that functions normally. Perform a spark test. WARNING: Always disconnect each injector connector. NOTE: Do not crank the engine for more than 2 seconds. Install the spark plug to the ignition coil and connect the ignition coil connector. Disconnect the injector connector. Ground the spark plug. Check if sparks occur while the engine is being cranked. OK Sparks jump across the electrode gap. NG --> REPLACE IGNITION COIL ASSEMBLY, THEN CONFIRM THAT THERE IS NO MISFIRE OK --> REPLACE SPARK PLUG
12. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
13. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 8 NG --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR OK: Go to next step
14. INSPECT MASS AIR FLOW METER See step 9 NG --> REPLACE MASS AIR FLOW METER OK: Go to next step
15. CHECK VALVE TIMING See step 4 NG --> ADJUST VALVE TIMING OK --> REPLACE ECM
16. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) Check the fuel pressure (low pressure side) Refer to «ON-VEHICLE INSPECTION»(ref-382729-S01558181072011012800000) . OK --> REPLACE FUEL INJECTOR FOR PORT INJECTION NG: Go to next step
17. CHECK FUEL PUMP OPERATION Check the fuel pump operation Refer to «ON-VEHICLE INSPECTION»(ref-382729-S01558181072011012800000) . OK --> CHECK AND REPLACE FUEL SYSTEM (PRESSURE REGULATOR, PIPE LINE AND FILTER) NG --> REPLACE FUEL PUMP
18. CHECK MISFIRE COUNT OF DIRECT INJECTION (CYLINDER #1 TO #6) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. (Procedure "A") Allow the engine to idle. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1 Misfire Count). If no misfire counts occur for any of the cylinders, perform the following procedure: (Procedure "B") Shift the gear selector lever to the D position. Repeat procedure "A" to "B" above. Monitor all of the misfire rate values that are displayed on the Techstream (example: Cylinder #1 Misfire Count). Result Misfire Count Proceed to Port Direct There are no misfire counts 1 or 2 cylinders have misfire counts A There are no misfire counts 3 cylinders or more have misfire counts B There are no misfire counts There are no misfire counts C C --> See step 21 B --> See step 19 A --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION (MISFIRING CYLINDER)
19. CHECK FUEL PRESSURE SENSOR Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Select the following menu items: Powertrain / Engine and ECT / Data List / Fuel Press. While revving the engine, check that the fuel pressure fluctuates. Standard Idling 3 to 5 MPa (30.6 to 51.0 kgf/cm 2 , 435 to 725 psi) 2000 rpm (No load) 7 to 9 MPa (71.4 to 91.8 kgf/cm 2 , 1016 to 1306 psi) HINT: The A/C switch and all accessory switches should be OFF, and the transmission gear selector lever should be in the N or P position, and the engine should be fully warmed up. NG --> REPAIR OR REPLACE FUEL SYSTEM FOR HIGH PRESSURE (REFER TO DTC P0087 OR P0088) OK: Go to next step
20. PERFORM SYSTEM CHECK (D-4S TEST) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the Injection Way / Direct. HINT: The A/C switch and all accessory switches should be OFF, and the transmission gear selector lever should be in the N or P position, and the engine should be fully warmed up. Read the value Short FT #1, Long FT #1, Short FT #2, Long FT #2 and Fuel Pump Duty (D4). Result Item Proceed to Fuel Pump Duty (D4) Short FT #1 + Long FT #1 Short FT #2 + Long FT #2 40% or more -15% or less -15% or less A 10% or less +15% or more +15% or more A 40% or more +15% or more +15% or more B 10% or less -15% or less -15% or less C 10% to 40% - - D D --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION (MALFUNCTIONING CYLINDER INJECTOR) C --> REPLACE ECM B --> REPLACE FUEL PRESSURE SENSOR A --> REPLACE FUEL PRESSURE SENSOR
21. CHECK MISFIRE COUNT Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Select the following menu items: Powertrain / Engine and ECT / Data List / Misfire RPM, Misfire Load, Cylinder #1 Misfire Count to Cylinder #6 Misfire and Injection Way. While driving the vehicle, monitor all of the misfire rate values (example: Cylinder #1 Misfire Count) or DTCs and Injection Way values. Result Misfire count Injection way Proceed to There are no misfire counts - A 1 or 2 cylinders have misfire counts PORT or EITHER B 3 cylinders or more have misfire counts PORT or EITHER C 1 or 2 cylinders have misfire counts DIRECT D 3 cylinders or more have misfire counts DIRECT E E --> See step 19 D --> REPLACE FUEL INJECTOR FOR DIRECT INJECTION (MALFUNCTIONING CYLINDER INJECTOR) C --> See step 12 B --> See step 8 A --> CHECK FOR INTERMITTENT PROBLEMS

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. 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-382723-S29949148122011012800000) .

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1. READ OUTPUT DTC (CHECK KNOCK SENSOR CIRCUIT) Disconnect the EH1 connector. Using lead wires, connect the connectors as follows: Male Connector - Female Connector Terminal 4 - Terminal 1 Terminal 5 - Terminal 2 Terminal 1 - Terminal 4 Terminal 2 - Terminal 5 Warm up the engine. Run the engine at 3000 rpm for 10 seconds or more. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display Proceed to DTC is same as when vehicle brought in (for example, P0327 and P0328 are output again, or P0332 and P0333 are output again) A DTC is different from when vehicle brought in (for example, P0327 and P0328 are output at first, but then P0332 and P0333 are output, or vice versa) B Reconnect the EH1 connector. B --> See step 4 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CONNECTOR - ECM) Disconnect the EH1 connector. Disconnect the E7 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition EH1 female connector 4 - E7-28 (KNK1) Below 1 ohms EH1 female connector 5 - E7-30 (EKNK) Below 1 ohms EH1 female connector 1 - E7-29 (KNK2) Below 1 ohms EH1 female connector 2 - E7-31 (EKN2) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition EH1 female connector 4 or E7-28 (KNK1) - Body ground 10 kohms or higher EH1 female connector 5 or E7-30 (EKNK) - Body ground 10 kohms or higher EH1 female connector 1 or E7-29 (KNK2) - Body ground 10 kohms or higher EH1 female connector 2 or E7-31 (EKN2) - Body ground 10 kohms or higher Reconnect the EH1 connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ECM Disconnect the EH1 connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition EH1 female connector 4 - 5 4.5 to 5.5 V EH1 female connector 1 - 2 4.5 to 5.5 V Reconnect the EH1 connector. NG --> REPLACE ECM OK --> CHECK FOR INTERMITTENT PROBLEMS
4. INSPECT KNOCK SENSOR Disconnect the EH1 connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition EH1 male connector 4 - 5 120 to 280 kohms EH1 male connector 1 - 2 120 to 280 kohms Reconnect the EH1 connector. OK --> CHECK FOR INTERMITTENT PROBLEMS NG: Go to next step
5. CHECK HARNESS AND CONNECTOR (CONNECTOR - KNOCK SENSOR) HINT: If DTC P0327 or P0328 has changed to P0332 or P0333, check the knock sensor circuit on the right bank side. If DTC P0332 or P0333 has changed to P0327 or P0328, check the knock sensor circuit on the left bank side. Disconnect the EH1 connector. Disconnect the H1 and H2 knock sensor connectors. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition EH1 male connector 4 - H1-2 Below 1 ohms EH1 male connector 5 - H1-1 Below 1 ohms EH1 male connector 1 - H2-2 Below 1 ohms EH1 male connector 2 - H2-1 Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition EH1 male connector 4 or H1-2 - Body ground 10 kohms or higher EH1 male connector 5 or H1-1 - Body ground 10 kohms or higher EH1 male connector 1 or H2-2 - Body ground 10 kohms or higher EH1 male connector 2 or H2-1 - Body ground 10 kohms or higher Reconnect the EH1 connector. Reconnect the knock sensor connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE KNOCK SENSOR

HINT

1. If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine mechanical system.
2. Check the engine speed. The engine speed can be checked by using the Techstream. To check, follow the operation below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Data List / Engine Speed. The engine speed may be indicated as 0 despite the engine revolving normally. This is caused by a lack of NE signals from the crankshaft position (CKP) sensor. Alternatively, the engine speed may be indicated as lower than the actual engine speed, if the CKP sensor output voltage is insufficient.
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 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-382723-S29949148122011012800000) .

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Scheme 253

1. INSPECT CRANKSHAFT POSITION SENSOR Disconnect the E47 crankshaft position (CKP) sensor connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 1 - 2 Cold 1630 to 2740 ohms 1 - 2 Hot 2065 to 3225 ohms HINT: 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
2. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the E47 CKP sensor connector. Disconnect the E8 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E47-1 - E8-32 (NE+) Below 1 ohms E47-2 - E8-31 (NE-) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E47-1 or E8-32 (NE+) - Body ground 10 kohms or higher E47-2 or E8-31 (NE-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK CRANKSHAFT POSITION SENSOR (SENSOR INSTALLATION) Check the CKP sensor installation. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR OK: Go to next step
4. CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) Check the teeth of the sensor plate. OK Sensor plate does not have any cracks or deformation. NG --> REPLACE CRANKSHAFT 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 .

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1. CHECK ECM TERMINAL VOLTAGE Inspect the ECM using an oscilloscope. While the engine is idling, check the waveform between the terminals of the ECM connector. Standard voltage Tester Connection Specified Condition E8-32 (NE+) - E8-31 (NE-) Correct waveform appears as shown E8-21 (VV1+) - E8-22 (VV1-) E8-18 (VV2+) - E8-19 (VV2-) OK --> REPLACE ECM NG: Go to next step
2. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the E50 or E60 VVT sensor connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E50-3 (VC) - Body ground 4.5 to 5.0 V E60-3 (VC) - Body ground 4.5 to 5.0 V NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the E50 or E60 VVT sensor connector. Disconnect the E8 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E50-1 (VVR+) - E8-21 (VV1+) Below 1 ohms E50-2 (VVR-) - E8-22 (VV1-) Below 1 ohms E60-1 (VVL+) - E8-18 (VV2+) Below 1 ohms E60-2 (VVL-) - E8-19 (VV2-) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E50-1 (VVR+) or E8-21 (VV1+) - Body ground 10 kohms or higher E50-2 (VVR-) or E8-22 (VV1-) - Body ground 10 kohms or higher E60-1 (VVL+) or E8-18 (VV2+) - Body ground 10 kohms or higher E60-2 (VVL-) or E8-19 (VV2-) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK VVT SENSOR FOR INTAKE SIDE (SENSOR INSTALLATION) Check the VVT sensor installation. OK Sensor is installed correctly. NG --> SECURELY REINSTALL SENSOR OK: Go to next step
5. 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. NG --> REPLACE CAMSHAFT TIMING GEAR ASSEMBLY OK --> REPLACE VVT SENSOR FOR INTAKE SIDE
6. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the E50 or E60 VVT sensor connector. Disconnect the E8 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E50-3 (VC) - E8-23 (VCV1) Below 1 ohms E60-3 (VC) - E8-20 (VCV2) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E50-3 (VC) or E8-23 (VCV1) - Body ground 10 kohms or higher E60-3 (VC) or E8-20 (VCV2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR 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 .

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1. PERFORM SIMULATION TEST Clear the DTC(s) Refer to «DTC CHECK / CLEAR»(ref-382723-S32023580312011012800000) . Change the arrangement of the ignition coils (with igniters). NOTE: Do not change the location of the connectors. Perform a simulation test. Result Display (DTC Output) Proceed to Same DTCs (that have been erased) A Other DTCs B B --> REPLACE IGNITION COIL ASSEMBLY A: Go to next step
2. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the E55, E63, E56, E65, E57 or E67 ignition coil connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition E55-1 (+B) - Body ground 11 to 14 V E63-1 (+B) - Body ground 11 to 14 V E56-1 (+B) - Body ground 11 to 14 V E65-1 (+B) - Body ground 11 to 14 V E57-1 (+B) - Body ground 11 to 14 V E67-1 (+B) - Body ground 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition E55-4 (GND) - Body ground Below 1 ohms E63-4 (GND) - Body ground Below 1 ohms E56-4 (GND) - Body ground Below 1 ohms E65-4 (GND) - Body ground Below 1 ohms E57-4 (GND) - Body ground Below 1 ohms E67-4 (GND) - Body ground Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM [IGT SIGNAL TERMINAL]) Disconnect the E55, E63, E56, E65, E57 or E67 ignition coil connector. Disconnect the ECM E6 and E45 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E55-3 (IGT1) - E6-13 (IGT1) Below 1 ohms E63-3 (IGT2) - E45-14 (IGT2) Below 1 ohms E56-3 (IGT3) - E6-10 (IGT3) Below 1 ohms E65-3 (IGT4) - E6-12 (IGT4) Below 1 ohms E57-3 (IGT5) - E45-13 (IGT5) Below 1 ohms E67-3 (IGT6) - E45-12 (IGT6) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E55-3 (IGT1) or E6-13 (IGT1) - Body ground 10 kohms or higher E63-3 (IGT2) or E45-14 (IGT2) - Body ground 10 kohms or higher E56-3 (IGT3) or E6-10 (IGT3) - Body ground 10 kohms or higher E65-3 (IGT4) or E6-12 (IGT4) - Body ground 10 kohms or higher E57-3 (IGT5) or E45-13 (IGT5) - Body ground 10 kohms or higher E67-3 (IGT6) or E45-12 (IGT6) - Body ground 10 kohms or higher Standard resistance (Check for open) Tester Connection Specified Condition E55-2 (IGF1) - E6-7 (IGF1) Below 1 ohms E63-2 (IGF2) - E6-6 (IGF2) Below 1 ohms E56-2 (IGF1) - E6-7 (IGF1) Below 1 ohms E65-2 (IGF2) - E6-6 (IGF2) Below 1 ohms E57-2 (IGF1) - E6-7 (IGF1) Below 1 ohms E67-2 (IGF2) - E6-6 (IGF2) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E55-2 (IGF1) or E6-7 (IGF1) - Body ground 10 kohms or higher E63-2 (IGF2) or E6-6 (IGF2) - Body ground 10 kohms or higher E56-2 (IGF1) or E6-7 (IGF1) - Body ground 10 kohms or higher E65-2 (IGF2) or E6-6 (IGF2) - Body ground 10 kohms or higher E57-2 (IGF1) or E6-7 (IGF1) - Body ground 10 kohms or higher E67-2 (IGF2) or E6-6 (IGF2) - Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK IF DTC OUTPUT RECURS Clear the DTC Refer to «DTC CHECK / CLEAR»(ref-382723-S32023580312011012800000) . Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC Output) Proceed to P0351, P0352, P0353, P0354, P0355 and/or P0356 are output A No output B B --> SYSTEM OK A --> REPLACE ECM