Engine Control (Sfi) System (Dtcs P0010 - P0368): Diagnosis Lexus IS II facelift

INSPECTION PROCEDURE

HINT

1. If DTC P0010 is displayed, check the right bank VVT system for intake camshaft circuit.
2. Bank 1 refers to the bank that includes cylinder No. 1.
3. If DTC P0020 is displayed, check the left bank VVT system for intake camshaft circuit.
4. Bank 2 refers to the bank that does not include cylinder No. 1.
5. 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»(ref-387359-S29840200882011022400000) .

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1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OIL CONTROL VALVE FOR INTAKE CAMSHAFT) Connect Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine. 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 using the tester. 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 2 OK --> CHECK FOR INTERMITTENT PROBLEMS
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Disconnect the intake camshaft timing oil control valve connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Reconnect the camshaft timing oil control valve connector. NG --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the E18 or E11 OCV connector. Disconnect the E3 or E5 ECM connectors. Measure the resistance. Standard resistance (check for open) Tester Connection Specified Condition E18-1 - OC1+ (E3-34) Below 1 ohms E18-2 - OC1- (E3-33) Below 1 ohms E11-1 - OC2+ (E5-9) Below 1 ohms E11-2 - OC2- (E5-8) Below 1 ohms Standard resistance (check for short) Tester Connection Specified Condition E18-1 or OC1+ (E3-34) - Body ground 10 kohms or higher E18-2 or OC1- (E3-33) - Body ground 10 kohms or higher E11-1 or OC2+ (E5-9) - Body ground 10 kohms or higher E11-2 or OC2- (E5-8) - Body ground 10 kohms or higher Reconnect the OCV and ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OCV - ECM) OK --> REPLACE ECM

HINT

1. If DTC P0011 or P0012 is displayed, check the right bank VVT system for intake camshaft circuit (bank 1).
2. Bank 1 refers to the bank that includes cylinder No. 1.
3. If DTC P0021 or P0022 is displayed, check the left bank VVT system for intake camshaft circuit (bank 2).
4. Bank 2 refers to the bank that does not include cylinder No. 1.
5. 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»(ref-387359-S29840200882011022400000) .

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1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: 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 Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine. Enter the following menus: 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 tester. 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 Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear DTCs. Start the engine and warm it up. Switch the ECM from normal mode to check mode using the tester. Drive the vehicle for more than 10 minutes. Read DTCs using the tester. 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 covers 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. Reinstall the cylinder head covers. NG --> ADJUST VALVE TIMING OK: Go to next step
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV) 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 OK: Go to next step
6. INSPECT OIL CONTROL VALVE FILTER AND PIPE Remove the oil pipe No. 1 or No. 2. Remove the oil control valve filter. Check that the filter and pipe are not clogged. OK The filter and pipe are not clogged. 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 Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear DTCs. Start the engine and warm up. Switch the ECM from normal mode to the check mode using the tester. Driver the vehicle for more than 10 minutes. Read output DTCs using 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 IS OK NG --> REPLACE ECM

HINT

1. If DTC P0013 is displayed, check the bank 1 VVT system for exhaust camshaft circuit.
2. Bank 1 refers to the bank that includes cylinder No. 1.
3. If DTC P0023 is displayed, check the bank 2 VVT system for exhaust camshaft circuit.
4. Bank 2 refers to the bank that does not include cylinder No. 1.
5. 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»(ref-387359-S29840200882011022400000) .

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1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OIL CONTROL VALVE FOR INTAKE CAMSHAFT) Connect Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine. Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2). Check the engine speed while operating the oil control valve using the tester. OK Tester Operation Specified Condition -128% (Oil control valve OFF) Normal engine speed 127% (Oil control valve ON) Engine idles roughly or stalls (soon after oil control valve switched from OFF to ON) NG --> See step 2 OK --> CHECK FOR INTERMITTENT PROBLEMS
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Disconnect the exhaust camshaft timing oil control valve connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 1 - 2 20 °C (68°F) 6.9 to 7.9 ohms Reconnect the camshaft timing oil control valve connector. NG --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the E21 or E31 OCV connector. Disconnect the E3 or E5 ECM connectors. Measure the resistance. Standard resistance (check for open) Tester Connection Specified Condition E21-1 - OE1+ (E3-9) Below 1 ohms E21-2 - OE1- (E3-8) Below 1 ohms E31-1 - OE2+ (E5-24) Below 1 ohms E31-2 - OE2- (E5-23) Below 1 ohms Standard resistance (check for short) Tester Connection Specified Condition E21-1 or OE1+ (E3-9) - Body ground 10 kohms or higher E21-2 or OE1- (E3-8) - Body ground 10 kohms or higher E31-1 or OE2+ (E5-24) - Body ground 10 kohms or higher E31-2 or OE2- (E5-23) - Body ground 10 kohms or higher Reconnect the OCV and ECM connectors. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (OCV - ECM) OK --> REPLACE ECM

HINT

1. If DTC P0014 or P0015 is displayed, check the bank 1 VVT system for exhaust camshaft circuit.
2. Bank 1 refers to the bank that includes cylinder No. 1.
3. If DTC P0024 or P0025 is displayed, check the bank 2 VVT system for exhaust camshaft circuit.
4. Bank 2 refers to the bank that does not include cylinder No. 1.
5. 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»(ref-387359-S29840200882011022400000) .

Scheme 213

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014, P0015, P0024 OR P0025) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC output) Proceed to P0014, P0015, P0024 or P0025 A P0014, P0015, P0024 or P0025 and other DTCs B HINT: If any DTCs other than P0014, P0015, P0024 or P0025 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 Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2). Check the engine speed while operating the Oil Control Valve (OCV) using the tester. OK Tester Operation Specified Condition -128% (Oil control valve OFF) Normal engine speed 127% (Oil control valve 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 P0014, P0015, P0024 OR P0025) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the tester. Refer to «CHECK MODE PROCEDURE»(ref-387359-S23762167392011022400000) . Drive the vehicle for more than 10 minutes. Read DTCs using the tester. 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 covers 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 crankshaft timing gears are aligned as shown in the illustration. Reinstall the cylinder head covers. NG --> ADJUST VALVE TIMING OK: Go to next step
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV FOR EXHAUST CAMSHAFT) 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 the 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 OK: Go to next step
6. INSPECT OIL CONTROL VALVE FILTER AND PIPE Remove the oil pipe No. 1 or No. 2. Remove the oil control valve filter. Check that the filter and pipe are not clogged. OK Filter is not clogged. NG --> CLEAN OIL CONTROL VALVE FILTER AND PIPE OK: Go to next step
7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (FOR EXHAUST CAMSHAFT) NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Clear the DTCs. Operate Techstream, or disconnect the EFI and ETCS fuses more than 60 sec. to erase the codes. Start the engine and warm up the engine. Switch the ECM from normal mode to check mode using Techstream. Refer to «CHECK MODE PROCEDURE»(ref-387359-S23762167392011022400000) . Drive the vehicle for more than 10 minutes or more. Read output DTCs using Techstream. OK No DTC output. HINT: DTC P0014, P0015, P0024 or P0025 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, thus eliminating the source of the problem. OK --> SYSTEM IS OK NG --> REPLACE ECM

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 .

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1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016 OR P0018) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC Output) Proceed to P0016 or P0018 A P0016 or P0018 and other DTCs B HINT: If any DTCs other than P0016 or P0018 are output, troubleshoot those DTCs first. B --> GO TO DTC CHART A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OIL CONTROL VALVE FOR INTAKE CAMSHAFT) Connect Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine. 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 using the tester. OK Tester Operation Specified Condition OCV OFF Normal engine idle 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 P0016 OR P0018) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Start the engine and warm it up. Switch the check mode using the tester. Refer to «CHECK MODE PROCEDURE»(ref-387359-S23762167392011022400000) . Drive the vehicle for more than 10 minutes. Read the DTCs using the tester. 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 covers RH and LH. Turn the crankshaft to align the timing marks of the crankshaft. Align the notch of the crankshaft pulley to the "0" position. Check if the timing marks of the camshaft pulley and camshaft bearing cap align. Turn the crankshaft clockwise by 360° if the timing marks do not align. Check if they align once again. OK The timing marks of the camshaft pulley and the camshaft bearing cap align when the notch of the crankshaft pulley is in the "0" position. Reinstall the cylinder head cover RH and LH. NG --> ADJUST VALVE TIMING OK: Go to next step
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Remove the intake camshaft timing oil control valve. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Apply the positive battery voltage to terminal 1 and the negative battery voltage to terminal 2. Check the valve operation. OK Valve moves quickly. Reinstall the camshaft timing oil control valve. NG --> REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY OK: Go to next step
6. CHECK OIL PIPE AND OIL CONTROL VALVE FILTER Remove the oil pipe No. 1 or No. 2. 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 pipe No. 1 or No. 2. NG --> REPLACE OIL CONTROL VALVE FILTER OR PIPE OK: Go to next step
7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Start the engine and warm it up. Switch the check mode using the tester. Refer to «CHECK MODE PROCEDURE»(ref-387359-S23762167392011022400000) . Drive the vehicle for more than 10 minutes. Confirm that no DTC is set using the tester. OK No DTC output. HINT: DTC P0016 or P0018 is output when foreign objects in engine oil are caught in some parts of the system. These codes will stay output 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. NG --> REPLACE ECM OK --> END

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.

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 .

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1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the E42 or E38 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 HA1A (1) - +B (2) 20°C (68°F) 1.8 to 3.4 ohms HA1A (1) - A1A- (4) - 10 kohms or higher Standard resistance (Bank 2 sensor 1) Tester Connection Condition Specified Condition HA2A (1) - +B (2) 20°C (68°F) 1.8 to 3.4 ohms HA2A (1) - A2A- (4) - 10 kohms or higher Reconnect the A/F sensor connector. NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
2. INSPECT A/F RELAY Remove the A/F relay from the engine room R/B No. 2. 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
3. INSPECT ECM Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition HA1A (E6-6) - E04 (E6-5) 9 to 14 V HA2A (E6-4) - E05 (E6-3) 9 to 14 V HINT: The HA1A means the A/F sensor bank 1 sensor 1. The HA2A means the A/F sensor bank 2 sensor 1. OK --> REPLACE ECM NG: Go to next step
4. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM, A/F SENSOR - A/F RELAY) Check the wire harness and the connector between the ECM and the A/F sensor ECM and body ground. Disconnect the E42 or E38 A/F sensor 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 HA1A (E42-1) - HA1A (E6-6) Below 1 ohms HA2A (E38-1) - HA2A (E6-4) Below 1 ohms E04 (E6-5) - Body ground Below 1 ohms E05 (E6-3) - Body ground Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition HA1A (E42-1) or HA1A (E6-6) - Body ground 10 kohms or higher HA2A (E38-1) or HA2A (E6-4) - Body ground 10 kohms or higher Reconnect the A/F sensor connector. Reconnect the ECM connector. Check the wire harness and the connector between the A/F sensor and A/F relay. Disconnect the E42 or E38 A/F sensor connector. Remove the A/F relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition +B (E42-2) - A/F relay (3) Below 1 ohms +B (E38-2) - A/F relay (3) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition +B (E42-2) or A/F relay (3) - Body ground 10 kohms or higher +B (E38-2) or A/F relay (3) - Body ground 10 kohms or higher Reconnect the A/F sensor connector. Reinstall the A/F relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM

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 .

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1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Disconnect the J68*1 or J40*2, Q4*3 heated oxygen (HO2) sensor connectors. 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 HT1B (1) - +B (2) 20°C (68°F) 11 to 16 ohms HT1B (1) - E2 (4) - 10 kohms or higher Standard resistance (Bank 2 sensor 2) Tester Connection Condition Specified Condition HT2B (1) - +B (2) 20°C (68°F) 11 to 16 ohms HT2B (1) - E2 (4) - 10 kohms or higher Reconnect the HO2 sensor connector. NG --> REPLACE HEATED OXYGEN SENSOR OK: Go to next step
2. INSPECT INTEGRATION NO. 1 RELAY (EFI MAIN RELAY) Remove the integration relay from the engine room J/B No. 2. Inspect the EFI MAIN relay. Standard resistance Terminal Connection Specified Condition 2A-8 - 2A-5 10 kohms or higher 2A-8 - 2A-5 Below 1 ohms (when battery voltage applied to terminals 2A-7 and 2A-6) Reinstall the integration relay. NG --> REPLACE INTEGRATION NO. 1 RELAY OK: Go to next step
3. INSPECT ECM (HT1B OR HT2B VOLTAGE) Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard voltage Terminal Connection Specified Condition HT1B (A6-2) - E03 (E3-6) 9 to 14 V HT2B (A6-1) - E03 (E3-6) 9 to 14 V HINT: The HT1B means the heated oxygen sensor bank 1 sensor 2. The HT2B means the heated oxygen sensor bank 2 sensor 2. OK --> REPLACE ECM NG: Go to next step
4. 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 J68*1 or J40*2 or Q4*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 engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Terminal Connection Specified Condition +B (J68-2) - EFI No. 2 fuse (2) Below 1 ohms +B (J40-2) - EFI No. 2 fuse (2) Below 1 ohms +B (Q4-2) - EFI No. 2 fuse (2) Below 1 ohms Standard resistance (Check for short) Terminal Connection Specified Condition +B (J68-2) or EFI No. 2 fuse (2) - Body ground 10 kohms or higher +B (J40-2) or EFI No. 2 fuse (2) - Body ground 10 kohms or higher +B (Q4-2) or EFI No. 2 fuse (2) - Body ground 10 kohms or higher Reconnect the HO2 sensor connector. Reconnect the EFI No. 2 fuse. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Check the harness and connector between the ECM and HO2 sensor. Disconnect the J68*1 or J40*2 or Q4*3 HO2 sensor connector. HINT: *1: Bank 1 Sensor 2 *2: Bank 2 Sensor 2 (2WD) *3: Bank 2 Sensor 2 (4WD) Disconnect the A6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Terminal Connection Specified Condition HT1B (J68-1) - HT1B (A6-2) Below 1 ohms HT2B (J40-1) - HT2B (A6-1) Below 1 ohms HT2B (Q4-1) - HT2B (A6-1) Below 1 ohms Standard resistance (Check for short) Terminal Connection Specified Condition HT1B (J68-1) or HT1B (A6-2) - Body ground 10 kohms or higher HT2B (J40-1) or HT2B (A6-1) - Body ground 10 kohms or higher HT2B (Q4-1) or HT2B (A6-1) - Body ground 10 kohms or higher Reconnect the HO2 sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Start the engine. Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Allow the engine to idle for 2 minutes or more. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. Result Display (DTC output) Proceed to No output A P0037, P0038, P0057, P0058, P0141 and/or P0161 B B --> REPLACE ECM A --> CHECK FOR INTERMITTENT PROBLEMS

HINT

1. If different DTCs related to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.
2. 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»(ref-387359-S29840200882011022400000) .

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1. CHECK FUEL LEAK (HIGH PRESSURE SIDE) Check around and beneath the car for gasoline leaks, fumes, etc. OK No gasoline leaks present. NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
2. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0087) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear DTCs. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs using 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 Has the vehicle run out of fuel in the past? YES --> DTC CAUSED BY RUNNING OUT OF FUEL NO: Go to next step
4. CHECK MISFIRE COUNT (CYL #1, #2, #3, #4, #5 AND #6) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1 Misfire Count, #2, #3, #4, #5 and #6. Allow the engine to idle. Read each value of CYL #1 to #6 displayed on the tester. Check if there is a particular cylinder that the misfire count is concentrated on. 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 A: Go to next step
5. CHECK FUEL PRESSURE SENSOR Connect Techstream to the DLC3. Start the engine. Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press. Check that the fuel pressure fluctuates when the engine condition changes from idling to racing. Result Inspection Result Proceed to Fuel pressure does not fluctuate A Fuel pressure fluctuates B Fuel pressure does not rise 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 - Step 1»(ref-387365-S05781922002011022400000) . 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 - Step 2»(ref-387365-S05781922002011022400000) . NG --> REPLACE FUEL PRESSURE REGULATOR OK: Go to next step
8. CHECK FUEL LEAK (HIGH PRESSURE FUEL LINE) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press. Start the engine. Check that the fuel pressure fluctuations 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 RELIEF VALVE Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn Techstream on. Enter the following menus: 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 RELIEF VALVE B: Go to next step
10. REPLACE FUEL PUMP FOR HIGH PRESSURE Replace the fuel pump for high pressure. Refer to «COMPONENTS»(ref-387358-S25093440482011022400000) . NEXT: Go to next step
11. CHECK IF DTC OUTPUT REOCCURS (SEE IF DTC P0087 IS OUTPUT AGAIN) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear DTCs. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs using Techstream. Result Display (DTC output) Proceed to P0087 A No output B B --> END A --> REPLACE ECM

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 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 MASS AIR FLOW METER (MAF) Connect Techstream to the DLC3. Turn the engine switch on (IG) (do not run the engine). Enter the following menus: Powertrain / Engine / Data List / All Data / MAF. Wait 30 seconds, and read the values on the tester. NOTE: Perform the inspection with the vehicle indoors and on a level surface. Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle). During the test, do not use an exhaust air duct on the exhaust tail pipe assembly. Result Mass Air Flow Rate (gm/sec) Proceed to 0.0 A 0.36 or more B More than 0.0 and less than 0.36 C C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 6 A: Go to next step
2. INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Disconnect the E29 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 +B (E29-3) - Body ground 9 to 14 V Reconnect the MAF meter connector. NG --> See step 5 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 neutral position and the A/C switch should be turned OFF. Standard voltage Tester Connection Condition Specified Condition VG (E5-27) - E2G (E5-26) 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 E29 MAF meter connector. Disconnect the E5 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition VG (E29-5) - VG (E5-27) Below 1 ohms E2G (E29-4) - E2G (E5-26) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition VG (E29-5) or VG (E5-27) - 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. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY) Inspect the EFI No. 2 fuse. Remove the EFI No. 2 fuse from the engine room No. 2 relay block. Check the EFI No. 2 fuse resistance. Standard resistance Below 1 ohms Reinstall the EFI No. 2 fuse. Disconnect the E29 MAF meter connector. Remove the integration relay from the engine room J/B and R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition +B (E29-3) - 2A-8 Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition +B (E29-3) or 2A-8 - Body ground 10 kohms or higher Reconnect the MAF meter connector. Reinstall the integration relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> CHECK ECM POWER SOURCE CIRCUIT
6. INSPECT ECM (SENSOR GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition E2G (E5-26) - Body ground Below 1 ohms NG --> REPLACE ECM OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the E29 MAF meter connector. Disconnect the E5 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition VG (E29-5) - VG (E5-27) Below 1 ohms E2G (E29-4) - E2G (E5-26) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition VG (E29-5) or VG (E5-27) - 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 Techstream. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

HINT

1. If other DTCs relating to different systems that have terminal E3 as the ground terminal are output simultaneously, terminal E3 may have an open circuit.

1. 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»(ref-387359-S29840200882011022400000) .

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1. READ VALUE USING INTAKE AIR TEMPERATURE SENSOR (INTAKE AIR) Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air. Read the value displayed on the tester. Standard Same as actual Intake Air Temperature (IAT). Result Temperature Displayed Proceed to -40 °C (-40°F) A 140°C (284°F) B Same as actual IAT C HINT: If there is an open circuit, Techstream indicates -40°C (-40°F). If there is a short circuit, Techstream indicates 140°C (284°F). C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 4 A: Go to next step
2. CHECK INTAKE AIR TEMPERATURE SENSOR (CHECK FOR OPEN IN SENSOR) Confirm good connection of the mass air flow meter. Disconnect the E29 Mass Air Flow (MAF) meter connector. Connect terminals THA and E3 of the MAF meter wire harness side connector. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air. Read the value displayed on the tester. Standard 140°C (284°F) Reconnect the MAF meter connector. OK --> REPLACE MASS AIR FLOW METER NG: Go to next step
3. CHECK ECM (CHECK FOR OPEN IN ECM) Confirm good connection of the ECM. Disconnect the E29 MAF meter connector. Connect terminals THA and E3 of the E5 ECM connector. HINT: Before checking, do visual and contact pressure checks on the ECM connector. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air. Read the value displayed on the tester. Standard 140°C (284°F) Reconnect the MAF meter connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> REPLACE ECM
4. CHECK INTAKE AIR TEMPERATURE SENSOR (CHECK FOR SHORT IN SENSOR) Disconnect the E29 MAF meter connector. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air. Read the value displayed on the tester. Standard -40°C (-40°F) Reconnect the MAF meter connector. OK --> REPLACE MASS AIR FLOW METER NG: Go to next step
5. CHECK ECM (CHECK FOR SHORT IN ECM) Disconnect the E5 ECM connector. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Intake Air. Read the value displayed on the tester. Standard -40°C (-40°F) Reconnect the ECM connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> REPLACE ECM

HINT

1. If other DTCs relating to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.

1. 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»(ref-387359-S29840200882011022400000) .

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1. READ VALUE USING ENGINE COOLANT TEMPERATURE SENSOR (COOLANT TEMP) Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the tester. 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) B Between 80°C and 97°C (176°F and 207°F) C HINT: If there is an open circuit, Techstream indicates -40°C (-40°F). If there is a short circuit, Techstream indicates 140°C (284°F). C --> CHECK FOR INTERMITTENT PROBLEMS B --> See step 4 A: Go to next step
2. CHECK ENGINE COOLANT TEMPERATURE SENSOR (CHECK FOR OPEN IN SENSOR) Confirm good connection at the Engine Coolant Temperature (ECT) sensor. Disconnect the E40 ECT sensor connector. Connect terminals 1 and 2 of the ECT sensor connector on the wire harness side. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the tester. Standard 140°C (284°F). Reconnect the ECT sensor connector. OK --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR NG: Go to next step
3. CHECK ECM (CHECK FOR OPEN IN ECM) Disconnect the E40 ECT sensor connector. Connect terminals THW and E2 of the E3 and E5 ECM connectors. HINT: Before checking, do visual and contact pressure checks on the ECM connector. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the tester. Standard 140°C (284°F). Reconnect the ECT sensor connector. OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR NG --> REPLACE ECM
4. CHECK ENGINE COOLANT TEMPERATURE SENSOR (CHECK FOR SHORT IN SENSOR) Disconnect the E40 ECT sensor connector. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the tester. Standard -40°C (-40°F) Reconnect the ECT sensor connector. OK --> REPLACE ENGINE COOLANT TEMPERATURE SENSOR NG: Go to next step
5. CHECK ECM (CHECK FOR SHORT IN ECM) Disconnect the E3 and E5 ECM connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the tester. 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 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-387359-S29840200882011022400000) .

HINT

1. If other DTCs relating to different systems that have terminal E3 as the ground terminal are output simultaneously, terminal E3 may have an open circuit.
2. 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»(ref-387359-S29840200882011022400000) .
3. These DTCs relate to the Throttle Position (TP) sensor.

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1. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / ETCS / Throttle Sensor Volt % and Throttle Position No. 2. Check the values displayed on the tester. Result Throttle Sensor Volt % (VTA1) When AP Released Throttle Position No. 2 (VTA2) When AP Released Throttle Sensor Volt % (VTA1) When AP Depressed Throttle Position No. 2 (VTA2) When AP Depressed Trouble Area Proceed to 0 % Between 0 V and 0.2 V 0 % Between 0 V and 0.2 V VC circuit open A 100 % Between 4.5 V and 5.0 V 100 % Between 4.5 V and 5.0 V E2 circuit open A 0 % or 100 % Between 2.1 V and 3.1 V (Fail-safe) 0 % or 100 % Between 2.1 V and 3.1 V (Fail-safe) VTA1 circuit open or ground short A Approx 19 % (Fail-safe) Between 0 V and 0.2 V, or 4.5 V and 5.0 V Between 10 % and 24 % (Fail-safe) Between 0 V and 0.2 V, or 4.5 V and 5.0 V VTA2 circuit open or ground short A Between 10 % and 24 % Between 2.1 V and 3.1 V Between 64 % and 96 % (Not fail-safe) Between 4.5 V and 5.0 V (Not fail-safe) TP sensor circuit normal B HINT: AP denotes Accelerator Pedal. VTA1 is expressed as percentages, and VTA2 is expressed as voltages. B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the E17 throttle body connector. Disconnect the E5 and E3 ECM connectors. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition VC (E17-5) - VC2 (E5-29) Below 1 ohms VTA (E17-6) - VTA1 (E3-23) Below 1 ohms VTA2 (E17-4) - VTA2 (E3-22) Below 1 ohms E2 (E17-3) - E3 (E5-30) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition VC (E17-5) or VC2 (E5-29) - Body ground 10 kohms or higher VTA (E17-6) or VTA1 (E3-23) - Body ground 10 kohms or higher VTA2 (E17-4) or VTA2 (E3-22) - 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 E17 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 VC2 (E5-29) - E3 (E5-30) 4.5 to 5.0 V Reconnect the throttle body connector. NG --> REPLACE ECM OK: Go to next step
4. REPLACE THROTTLE BODY NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Start the engine. Allow the engine to idle for 15 seconds or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC Output) Proceed to P0120, P0122, P0123, P0220, P0223, and/or P2135 A No output B B --> END A --> REPLACE ECM

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

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 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-387359-S29840200882011022400000) .

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

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

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

1. Connect Techstream to the DLC3.
2. Start the engine.
3. Turn the tester 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 tester.

HINT

1. The Control the Injection Volume for air fuel ratio 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)

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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 view.

HINT

1. Read freeze frame data using Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
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.

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1. READ DTC OUTPUT Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Result Proceed to P0138 or P0158 A P0137 or P0157 B P0136 or P0156 C P0139 or P0159 D D --> See step 16 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 Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Select the following menu items: Select: 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 Higher than 1.0 V A Below 1.0 V B B --> See step 5 A: Go to next step
3. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the J68*1 or J40*2, Q4*3 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 Specified Condition +B (2) - E2 (4) 10 kohms or higher +B (2) - OX1B (3) 10 kohms or higher Standard resistance (Bank 2 sensor 2) Tester Connection Specified Condition +B (2) - E2 (4) 10 kohms or higher +B (2) - OX2B (3) 10 kohms or higher NG --> See step 20 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the A6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition HT1B (A6-2) - OX1B (A6-28) 10 kohms or higher HT2B (A6-1) - OX2B (A6-17) 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
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 Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester 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 (60 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: Select: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details. Confirm that RANGE B1S1 is either Pass or Fail. If the tester shows Incomplete, re-check RANGE B1S1 after performing the drive pattern. Select the RANGE B1S1. Read the Test Value. Standard current Less than 3.0 mA HINT: If the tester shows Incomplete again, add the vehicle speed and use the second gear to decelerate the vehicle. Refer to the CONFIRMATION DRIVING PATTERN. NG --> See step 14 OK --> See step 12
6. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Start the engine. Select the following menu items: Powertrain / Engine and ECT / 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. 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 using 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 Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester 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 tester, and monitor the voltage output of air fuel ratio and heated oxygen sensors displayed on the tester. 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 Variation 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 reaction, the air fuel ratio sensor is malfunctioning. NG --> See step 14 OK --> See step 22
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) Disconnect the J68*1 or J40*2, Q4*3 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 HT1B (1) - +B (2) 20°C (68°F) 11 to 16 ohms HT1B (1) - E2 (4) - 10 kohms or higher Standard resistance (Bank 2 sensor 2) Tester Connection Condition Specified Condition HT2B (1) - +B (2) 20°C (68°F) 11 to 16 ohms HT2B (1) - E2 (4) - 10 kohms or higher NG --> See step 12 OK: Go to next step
10. INSPECT INTEGRATION RELAY (EFI MAIN RELAY) Remove the integration relay from the engine room J/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 2A-8 - 2A-5 10 kohms or higher 2A-8 - 2A-5 Below 1 ohms (when battery voltage applied to terminals 2A-7 and 2A-6) Reinstall the integration relay. NG --> REPLACE INTEGRATION RELAY OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the J68*1 and J40*2, Q4*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 Terminal Connection Specified Condition +B (J68-2) - Body ground 9 to 14 V +B (J40-2) - Body ground 9 to 14 V +B (Q4-2) - Body ground 9 to 14 V Turn the engine switch off.. Disconnect the A6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Terminal Connection Specified Condition HT1B (J68-1) - HT1B (A6-2) Below 1 ohms OX1B (J68-3) - OX1B (A6-28) Below 1 ohms E2 (J68-4) - O1B- (A6-29) Below 1 ohms HT2B (J40-1) - HT2B (A6-1) Below 1 ohms OX2B (J40-3) - OX2B (A6-17) Below 1 ohms E2 (J40-4) - O2B- (A6-18) Below 1 ohms HT2B (Q4-1) - HT2B (A6-1) Below 1 ohms OX2B (Q4-3) - OX2B (A6-17) Below 1 ohms E2 (Q4-4) - O2B- (A6-18) Below 1 ohms Standard resistance (Check for short) Terminal Connection Specified Condition HT1B (J68-1) or HT1B (A6-2) - Body ground 10 kohms or higher OX1B (J68-3) or OX1B (A6-28) - Body ground 10 kohms or higher E2 (J68-4) or O1B- (A6-29) - Body ground 10 kohms or higher HT2B (J40-1) or HT2B (A6-1) - Body ground 10 kohms or higher OX2B (J40-3) or OX2B (A6-17) - Body ground 10 kohms or higher E2 (J40-4) or O2B- (A6-18) - Body ground 10 kohms or higher HT2B (Q4-1) or HT2B (A6-1) - Body ground 10 kohms or higher OX2B (Q4-3) or OX2B (A6-17) - Body ground 10 kohms or higher E2 (Q4-4) or O2B- (A6-18) - Body ground 10 kohms or higher Reconnect the HO2 sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-387339-S38248060052011022400000) . NEXT: Go to next step
13. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Warm-up the engine until the engine coolant temperature is 75°C (167°F) or more. Drive the vehicle at 38 to 75 mph (60 to 120 km/h) for at 10 minutes. Drive the vehicle 38 mph (60 km/h) or more and decelerate the vehicle for 10 seconds or more. Perform this 3 times. Turn the tester on. Select the following menu items: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158. 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 Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0136, P0137, P0138, P0156, P0157 or P0158 is output) B B --> See step 23 A --> END
14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-387339-S07660990752011022400000) . NEXT: Go to next step
15. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Warm-up the engine until the engine coolant temperature is 75°C (167°F) or more. Drive the vehicle at 38 to 75 mph (60 to 120 km/h) for at 10 minutes. Drive the vehicle 38 mph (60 km/h) or more and decelerate the vehicle for 10 seconds or more. Perform this 3 times. Turn the tester on. Select the following menu items: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158. 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 Result Proceed to NORMAL (DTC is not output) A ABNORMAL (DTC P0136, P0137, P0138, P0156, P0157 or P0158 is output) B B --> See step 24 A --> END
16. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Select the following menu items: Select: 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 Higher than 1.0 V A Below 1.0 V B B --> See step 19 A: Go to next step
17. INSPECT HEATED OXYGEN SENSOR Disconnect the J68*1 or J40*2, Q4*3 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 Specified Condition +B (2) - E2 (4) 10 kohms or higher +B (2) - OX1B (3) 10 kohms or higher Standard resistance (Bank 2 sensor 2) Tester Connection Specified Condition +B (2) - E2 (4) 10 kohms or higher +B (2) - OX2B (3) 10 kohms or higher NG --> See step 24 OK: Go to next step
18. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the A6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition HT1B (A6-2) - OX1B (A6-28) 10 kohms or higher HT2B (A6-1) - OX2B (A6-17) 10 kohms or higher Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 21
19. READ VALUE USING DTC OUTPUT (DTC P0139 OR P0159 IS OUTPUT AGAIN) Connect the Techstream to the DLC3. Warm-up the engine until the engine coolant temperature is 75°C (167°F) or more. Drive the vehicle at 38 to 75 mph (60 to 120 km/h) for at 10 minutes. Drive the vehicle 38 mph (60 km/h) or more and decelerate the vehicle for 10 seconds or more. Perform this 3 times. Turn the tester on. Select the following menu items: 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 --> See step 24 A --> CHECK FOR INTERMITTENT PROBLEMS
20. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-387339-S38248060052011022400000)
21. REPLACE ECM. Refer to «REMOVAL»(ref-387363-S31270846412011022400000)
22. CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO. Refer to «INSPECTION PROCEDURE»(ref-387364-S05003967262011022400000)
23. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-387339-S07660990752011022400000)
24. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-387339-S38248060052011022400000)

HINT

Techstream only

Malfunctioning areas can be identified by performing the Control the Injection Volume for A/F Sensor function provided in the Active Test. The Control the Injection Volume for A/F Sensor function can help to determine whether the Air Fuel Ratio (A/F) sensor, Heated Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.

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

1. Connect Techstream to the DLC3.
2. Start the engine and turn the tester on.
3. Warm up the engine at engine speed of 2500 RPM for approximately 90 seconds.
4. On the tester, enter the following menus: 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 B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the tester.

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 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 Fuel pressure Gas leakage from exhaust system (Air fuel ratio extremely lean or rich)

1. Following the Control the Injection Volume for A/F Sensor procedure enables technicians to check and graph the voltage outputs of both the A/F and HO2 sensors.
2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / A/F Control System / AFS Voltage B1 S1 and O2S B1 S2; then press the graph button on the Data List view.

HINT

1. 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»(ref-387359-S29840200882011022400000) .
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 rich air-fuel mixture. Check for conditions that would cause the engine to run lean.

Scheme 250

Scheme 251

Scheme 252

Scheme 253

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0171, P0172, P0174 OR P0175) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC output) Proceed to P0171, P0172, P0174 or P0175 A P0171, P0172, P0174 or P0175 and other DTCs B HINT: If any DTCs other than P0171, P0172, P0174 or P0175 are output, troubleshoot those DTCs first. B --> GO TO DTC CHART A: Go to next step
2. CHECK PCV HOSE OK PCV hose is connected correctly and is not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
3. 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
4. PERFORM ACTIVE TEST USING TECHSTREAM (A/F CONTROL) Connect Techstream to the DLC3. Start the engine and turn the tester on. Warm up the engine at an engine speed of 2500 RPM for approximately 90 seconds. On the tester, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor. Perform the Control the Injection Volume for A/F Sensor operation with the engine in an idling condition (press the RIGHT or LEFT button to change the fuel injection volume). Monitor the output voltages of the A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the tester. 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 B1S1 or AFS B2S1 (A/F) +25% Rich Less than 3.1 V AFS Voltage B1S1 or AFS B2S1 (A/F) -12.5% Lean More than 3.4 V O2S B1S2 or O2S B2S2 (HO2) +25% Rich More than 0.55 V O2S B1S2 or O2S B2S2 (HO2) -12.5% Lean Less than 0.4 V Result Status AFS Voltage B1S1 or AFS Voltage B2S1 Status O2S B1S2 or O2S B2S2 A/F Condition and A/F Sensor Condition Misfire Suspected Trouble Area Proceed to Lean/Rich Lean/Rich Normal - - C Lean Lean Actual air-fuel ratio lean May occur PCV valve and hose PCV hose connections Injector blockage 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 - Injector blockage 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. C --> See step 16 B --> See step 12 A: Go to next step
5. READ VALUE USING ENGINE COOLANT TEMPERATURE SENSOR (COOLANT TEMP) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / 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
6. READ VALUE USING INTAKE AIR FLOW METER (MAF) Read the value using the Techstream (MAF). NOTE: Turn off the engine. Perform the inspection with the vehicle indoors and on a level surface. Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle). During the test, do not use the exhaust air duct to perform suction on the exhaust pipe. Turn the engine switch on (ACC). Turn the engine switch on (IG) (do not run the engine). Turn the tester ON. Select the following menu items: Powertrain / Engine and ECT / Data List / MAF. Wait 30 seconds, and read the values on the Techstream. Standard condition Less than 0.36 g/sec. NG --> REPLACE MASS AIR FLOW METER OK: Go to next step
7. CHECK FUEL PRESSURE (LOW PRESSURE SIDE) Check the fuel pressure (low pressure side). Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-387365-S05781922002011022400000) . NG --> CHECK AND REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND FILTER OK: Go to next step
8. CHECK FUEL PRESSURE SENSOR Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press. While revving the engine, check that the fuel pressure fluctuates. OK Fuel pressure fluctuates. NG --> REPLACE FUEL PRESSURE SENSOR OK: Go to next step
9. CHECK FUEL PRESSURE (HIGH PRESSURE SIDE) Check the fuel pressure (high pressure side). Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-387365-S05781922002011022400000) . NG --> CHECK AND REPLACE FUEL PUMP, FUEL PRESSURE SENSOR, WIRING AND FUEL LEAKAGE 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. CHECK FOR SPARK AND IGNITION HINT: If the spark plugs or ignition system malfunctions, engine misfire may occur. The misfire count can be read using Techstream. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Cylinder #1 Misfire Rate (to Cylinder #6 Misfire Rate). NG --> REPAIR OR REPLACE IGNITION SYSTEM OK: Go to next step
12. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the E42 or E38 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 HA1A (1) - +B (2) 20°C (68°F) 1.8 to 3.4 ohms HA1A (1) - A1A- (4) - 10 kohms or higher Standard resistance (Bank 2 sensor 1) Tester Connection Condition Specified Condition HA2A (1) - +B (2) 20°C (68°F) 1.8 to 3.4 ohms HA2A (1) - A2A- (4) - 10 kohms or higher Reconnect the A/F sensor connector. NG --> REPLACE AIR FUEL RATIO SENSOR OK: Go to next step
13. INSPECT A/F RELAY Remove the A/F relay from the engine room R/B No. 2. 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
14. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the E42 and E38 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 +B (E42-2) - Body ground 9 to 14 V +B (E38-2) - Body ground 9 to 14 V Turn the engine switch off. 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 HA1A (E42-1) - HA1A (E6-6) Below 1 ohms A1A+ (E42-3) - A1A+ (E6-18) Below 1 ohms A1A- (E42-4) - A1A- (E6-17) Below 1 ohms HA2A (E38-1) - HA2A (E6-4) Below 1 ohms A2A+ (E38-3) - A2A+ (E6-28) Below 1 ohms A2A- (E38-4) - A2A- (E6-27) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition HA1A (E42-1) or HA1A (E6-6) - Body ground 10 kohms or higher A1A+ (E42-3) or A1A+ (E6-18) - Body ground 10 kohms or higher A1A- (E42-4) or A1A- (E6-17) - Body ground 10 kohms or higher HA2A (E38-1) or HA2A (E6-4) - Body ground 10 kohms or higher A2A+ (E38-3) or A2A+ (E6-28) - Body ground 10 kohms or higher A2A- (E38-4) or A2A- (E6-27) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the A/F sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
15. REPLACE AIR FUEL RATIO SENSOR NEXT: Go to next step
16. PERFORM CONFIRMATION DRIVING PATTERN Connect Techstream to the DLC3. (Procedure "A") Turn the engine switch on (IG) and turn the tester on. (Procedure "B") Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . (Procedure "C") Switch the ECM from normal mode to check mode using the tester. Refer to «CHECK MODE PROCEDURE»(ref-387359-S23762167392011022400000) . (Procedure "D") Start the engine and warm it up with all the accessories switched OFF. (Procedure "E") Drive the vehicle at between 38 mph and 75 mph (60 km/h and 120 km/h) and at an engine speed of between 1400 RPM and 3200 RPM for 3 to 5 minutes. (Procedure "F") HINT: If the system is still malfunctioning, the MIL will be illuminated during procedure "F". NOTE: If the conditions in this test are not strictly followed, no malfunction will be detected. NEXT: Go to next step
17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0171, P0172, P0174 OR P0175) On Techstream, enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display (DTC output) Proceed to No output A P0171, P0172, P0174 or P0175 B B --> See step 5 A --> END

HINT

1. If different DTCs related to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may have an open circuit.
2. 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»(ref-387359-S29840200882011022400000) .

Scheme 254

Scheme 255

Scheme 256

Scheme 257

1. READ VALUE USING TECHSTREAM (FUEL PRESSURE) Connect Techstream to the DLC3. Start the engine. Turn Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press. Read the values. Pressure 4 to 13 MPa (40.8 to 132.6 kgf/cm 2 , 580 to 1885 psi). Result Fuel Pressure (MPa) Proceed to 19.6 or more A 0.0 B OK (4 to 13 MPa (40.8 to 132.6 kgf/cm 2 , 580 to 1885 psi)) * C HINT: *: The value must be changed 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 E37 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 VC (E37-3) - E2 (E37-1) 4.5 to 5.5 V NG --> See step 4 OK: Go to next step
3. INSPECT ECM (PR VOLTAGE) Start the engine. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition PR (E6-25) - E2 (E3-28) 25°C (77°F) 1.8 to 2.3 V HINT: The fuel pressure in the delivery pipe is 4 to 13 MPa (40.8 to 132.6 kgf/cm 2 , 580 to 1885 psi). NG --> See step 5 OK --> REPLACE ECM
4. CHECK HARNESS AND CONNECTOR (ECM - FUEL PRESSURE SENSOR) Disconnect the E3 and E6 ECM connectors. Disconnect the E37 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 VC (E3-29) - VC (E37-3) Below 1 ohms PR (E6-25) - PR (E37-2) Below 1 ohms E2 (E3-28) - E2 (E37-1) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition VC (E3-29) or VC (E37-3) - Body ground 10 kohms or higher PR (E6-25) or PR (E37-2) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the fuel pressure sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE ECM
5. CHECK HARNESS AND CONNECTOR (ECM - FUEL PRESSURE SENSOR) Disconnect the E37 fuel pressure sensor connector. Disconnect the E6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for short) Tester Connection Specified Condition PR (E6-25) or PR (E37-2) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the fuel pressure sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE FUEL PRESSURE SENSOR

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 .

Scheme 258

Scheme 259

Scheme 260

Scheme 261

Scheme 262

1. INSPECT INJECTOR DRIVER (POWER SOURCE OF EDU) Disconnect the E58 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 +B (E58-1) - Body ground 9 to 14 V +B2 (E58-2) - Body ground 9 to 14 V Reconnect the injector driver (EDU) connector. NG --> CHECK EDU (POWER SOURCE CIRCUIT) OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (EDU - FUEL INJECTOR) Disconnect the H1 and I1 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition IJ1+ (H1-2) - IJ1- (H1-5) 20°C (68°F) 2.01 to 2.31 ohms IJ2+ (I1-3) - IJ2- (I1-6) 20°C (68°F) 2.01 to 2.31 ohms IJ3+ (H1-3) - IJ3- (H1-6) 20°C (68°F) 2.01 to 2.31 ohms IJ4+ (I1-1) - IJ4- (I1-4) 20°C (68°F) 2.01 to 2.31 ohms IJ5+ (H1-1) - IJ5- (H1-4) 20°C (68°F) 2.01 to 2.31 ohms IJ6+ (I1-2) - IJ6- (I1-5) 20°C (68°F) 2.01 to 2.31 ohms Reconnect the injector driver (EDU) connector. NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (ECM - EDU) Disconnect the E5, E3 and E6 connectors. Disconnect the E26 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 #10 (E3-15) - #10 (E26-3) Below 1 ohms #20 (E5-17) - #20 (E26-2) Below 1 ohms #30 (E3-14) - #30 (E26-1) Below 1 ohms #40 (E5-16) - #40 (E26-12) Below 1 ohms #50 (E3-13) - #50 (E26-11) Below 1 ohms #60 (E5-15) - #60 (E26-10) Below 1 ohms INJF (E6-26) - INJF (E26-9) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition #10 (E3-15) or #10 (E26-3) - Body ground 10 kohms or higher #20 (E5-17) or #20 (E26-2) - Body ground 10 kohms or higher #30 (E3-14) or #30 (E26-1) - Body ground 10 kohms or higher #40 (E5-16) or #40 (E26-12) - Body ground 10 kohms or higher #50 (E3-13) or #50 (E26-11) - Body ground 10 kohms or higher #60 (E5-15) or #60 (E26-10) - Body ground 10 kohms or higher INJF (E6-26) or INJF (E26-9) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK ECM (#10, #20, #30, #40, #50 AND #60 VOLTAGE) Connect an oscilloscope to terminals #10 to #60 and E1 of the E5, E4 and E3 ECM harness side connectors. With the engine cranking or idling, check the signal waveform. Standard Signal waveform appears as shown in the illustration. ECM Terminal Name CH1: #10 (E3-15) - E1 (E4-7) CH1: #20 (E5-17) - E1 (E4-7) CH1: #30 (E3-14) - E1 (E4-7) CH1: #40 (E5-16) - E1 (E4-7) CH1: #50 (E3-13) - E1 (E4-7) CH1: #60 (E5-15) - E1 (E4-7) Tester Range 20 V/DIV., 20 ms./DIV. Condition Idling after warming up engine HINT: Check the waveform before the ECM detects the DTC(s) and enters the fail-safe mode, because the ECM will not indicate the output voltage any more once it enters the fail-safe mode. NG --> REPLACE ECM OK: Go to next step
5. CHECK ECM (INJF VOLTAGE) Connect an oscilloscope to terminals INJF and E1 of the E4 and E6 ECM harness side connectors. With the engine cranking or idling, check the signal waveform. Standard Signal waveform appears as shown in the illustration. ECM Terminal Name CH2: INJF (E6-26) - E1 (E4-7) Tester Range 20 V/DIV., 20 ms./DIV. Condition Idling after warming up engine HINT: Check the waveform before the ECM detects the DTC(s) and enters the fail-safe mode, because the injector driver (EDU) will not indicate the output voltage any more once it enters the fail-safe mode. NG --> REPLACE INJECTOR DRIVER OK --> CHECK FOR INTERMITTENT PROBLEMS
6. INSPECT FUEL INJECTOR ASSEMBLY (RESISTANCE) Check the resistance of the fuel injector. Refer to «INSPECTION»(ref-387358-S21555254902011022400000) . NG --> REPLACE FUEL INJECTOR OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR

HINT

1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
2. Read freeze frame data using Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
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 volume in the tank. Improper fuel is used. The spark plugs have been contaminated.
5. After finishing repairs, check the misfire counts of the cylinders (Cylinder #1 Misfire Count to Cylinder #6 Misfire Count).
6. Be sure to confirm that no misfiring cylinder DTCs are set again by conducting the confirmation driving pattern after finishing repairs.
7. For 6 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-387359-S19593904092011022400000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the tester. 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 have occurred only while warming up the engine.
10. An extremely unbalanced drive wheel which causes body vibration may cause misfire DTCs to be detected.

1. An extremely unbalanced drive wheel which causes body vibration may cause misfire DTCs to be detected.

Scheme 263

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE CODES) Connect Techstream to the DLC3. Turn the engine switch on (IG). Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. HINT: Write down the 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 --> See step 31 A: Go to next step
2. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire 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 CONNECTIONS OK PCV hose is correctly connected and is not damaged. NG --> REPAIR OR REPLACE PCV HOSE OK: Go to next step
4. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the tester. 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 Techstream to the DLC3. Turn the engine switch on (IG) and turn the tester 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. READ VALUE USING TECHSTREAM Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1 Misfire Count, #2, #3, #4, #5 and #6 Read each value for Cylinder #1 Misfire Count to #6 displayed on the tester. If no misfire counts occur in any cylinders, perform the following procedures: Start the engine and let it idle. Move the shift lever to the D position. Check the Cylinder #1 Misfire Count to #6. If misfire counts are still not displayed, perform steps (c) and (d). Drive the vehicle with the Misfire RPM and Misfire Load noted in the "READ VALUE OF TECHSTREAM Misfire RPM AND Misfire Load)" procedures above (Step c). Read the Cylinder #1 Misfire Count to #6 or DTCs displayed on the tester (Step d). Result Misfire Count Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal. If the freeze frame data's record of the engine coolant temperature is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data's record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 18 A: Go to next step
7. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Measure the spark plug electrode gap. Maximum gap 1.0 mm and 1.1 mm (0.039 in. and 0.043 in.) Check the electrode for carbon deposits. RECOMMENDED SPARK PLUG Manufacturer Product DENSO FK20HBR11 NGK ILFR6D11T NOTE: If the electrode gap is larger than standard, replace the spark plug. Do not adjust the electrode gap. NG --> See step 32 OK: Go to next step
8. CHECK FOR SPARKS AND IGNITION Disconnect the injector connectors to prevent the engine from starting. WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Remove the ignition coil from the cylinder head. Install the spark plug onto the ignition coil. Attach the spark plug assembly to the cylinder head. Crank the engine for less than 2 seconds and check the spark. OK Sparks jump across electrode gap. Install the ignition coil. Reconnect the injector connectors. NG --> See step 29 OK: Go to next step
9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-387327-S15636859842011022400000) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (ECM - EDU) Disconnect the E5, E3 and E6 connectors. Disconnect the E26 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 #10 (E3-15) - #10 (E26-3) Below 1 ohms #20 (E5-17) - #20 (E26-2) Below 1 ohms #30 (E3-14) - #30 (E26-1) Below 1 ohms #40 (E5-16) - #40 (E26-12) Below 1 ohms #50 (E3-13) - #50 (E26-11) Below 1 ohms #60 (E5-15) - #60 (E26-10) Below 1 ohms INJF (E6-26) - INJF (E26-9) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition #10 (E3-15) or #10 (E26-3) - Body ground 10 kohms or higher #20 (E5-17) or #20 (E26-2) - Body ground 10 kohms or higher #30 (E3-14) or #30 (E26-1) - Body ground 10 kohms or higher #40 (E5-16) or #40 (E26-12) - Body ground 10 kohms or higher #50 (E3-13) or #50 (E26-11) - Body ground 10 kohms or higher #60 (E5-15) or #60 (E26-10) - Body ground 10 kohms or higher INJF (E6-26) or INJF (E26-9) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (EDU - FUEL INJECTOR) Disconnect the H1 and I1 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition IJ1+ (H1-2) - IJ1- (H1-5) 20°C (68°F) 2.01 to 2.31 ohms IJ2+ (I1-3) - IJ2- (I1-6) 20°C (68°F) 2.01 to 2.31 ohms IJ3+ (H1-3) - IJ3- (H1-6) 20°C (68°F) 2.01 to 2.31 ohms IJ4+ (I1-1) - IJ4- (I1-4) 20°C (68°F) 2.01 to 2.31 ohms IJ5+ (H1-1) - IJ5- (H1-4) 20°C (68°F) 2.01 to 2.31 ohms IJ6+ (I1-2) - IJ6- (I1-5) 20°C (68°F) 2.01 to 2.31 ohms Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector resistance. Refer to «INSPECTION»(ref-387358-S21555254902011022400000) . Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-387358-S21555254902011022400000) . NG --> See step 33 OK: Go to next step
13. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION»(ref-387366-S26522089122011022400000) . OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
14. CHECK VALVE TIMING See step 4 NG --> ADJUST VALVE TIMING OK: Go to next step
15. CHECK FUEL PRESSURE Check the fuel pressure for low pressure side. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-387365-S05781922002011022400000) . Check the fuel pressure for high pressure side. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-387365-S05781922002011022400000) . NG --> CHECK AND REPLACE FUEL SYSTEM OK: Go to next step
16. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 3 NG --> See step 34 OK: Go to next step
17. INSPECT MASS AIR FLOW METER See step 6 NG --> See step 35 OK --> See step 36
18. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION»(ref-387366-S26522089122011022400000) . OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
19. CHECK VALVE TIMING See step 4 NG --> ADJUST VALVE TIMING OK: Go to next step
20. CHECK FUEL PRESSURE Check the fuel pressure for low pressure side. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-387365-S05781922002011022400000) . Check the fuel pressure for high pressure side. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-387365-S05781922002011022400000) . NG --> CHECK AND REPLACE FUEL SYSTEM OK: Go to next step
21. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 3 NG --> See step 34 OK: Go to next step
22. INSPECT MASS AIR FLOW METER See step 6 NG --> See step 35 OK: Go to next step
23. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Measure the spark plug electrode gap. Maximum gap 1.0 mm and 1.1 mm (0.039 in. and 0.043 in.) Check the electrode for carbon deposits. RECOMMENDED SPARK PLUG Manufacturer Product DENSO FK20HBR11 NGK ILFR6D11T NOTE: If the electrode gap is larger than standard, replace the spark plug. Do not adjust the electrode gap. NG --> See step 32 OK: Go to next step
24. CHECK FOR SPARKS AND IGNITION Disconnect the injector connectors to prevent the engine from starting. WARNING: Always disconnect all injector connectors. NOTE: Do not crank the engine for more than 2 seconds. Remove the ignition coil from the cylinder head. Install the spark plug onto the ignition coil. Attach the spark plug assembly to the cylinder head. Crank the engine for less than 2 seconds and check the spark. OK Sparks jump across electrode gap. Install the ignition coil. Reconnect the injector connectors. NG --> See step 29 OK: Go to next step
25. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 9»(ref-387327-S15636859842011022400000) . NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
26. CHECK HARNESS AND CONNECTOR (ECM - EDU) Disconnect the E5, E3 and E6 connectors. Disconnect the E26 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 #10 (E3-15) - #10 (E26-3) Below 1 ohms #20 (E5-17) - #20 (E26-2) Below 1 ohms #30 (E3-14) - #30 (E26-1) Below 1 ohms #40 (E5-16) - #40 (E26-12) Below 1 ohms #50 (E3-13) - #50 (E26-11) Below 1 ohms #60 (E5-15) - #60 (E26-10) Below 1 ohms INJF (E6-26) - INJF (E26-9) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition #10 (E3-15) or #10 (E26-3) - Body ground 10 kohms or higher #20 (E5-17) or #20 (E26-2) - Body ground 10 kohms or higher #30 (E3-14) or #30 (E26-1) - Body ground 10 kohms or higher #40 (E5-16) or #40 (E26-12) - Body ground 10 kohms or higher #50 (E3-13) or #50 (E26-11) - Body ground 10 kohms or higher #60 (E5-15) or #60 (E26-10) - Body ground 10 kohms or higher INJF (E6-26) or INJF (E26-9) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
27. CHECK HARNESS AND CONNECTOR (EDU - FUEL INJECTOR) Disconnect the H1 and I1 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition IJ1+ (H1-2) - IJ1- (H1-5) 20°C (68°F) 2.01 to 2.31 ohms IJ2+ (I1-3) - IJ2- (I1-6) 20°C (68°F) 2.01 to 2.31 ohms IJ3+ (H1-3) - IJ3- (H1-6) 20°C (68°F) 2.01 to 2.31 ohms IJ4+ (I1-1) - IJ4- (I1-4) 20°C (68°F) 2.01 to 2.31 ohms IJ5+ (H1-1) - IJ5- (H1-4) 20°C (68°F) 2.01 to 2.31 ohms IJ6+ (I1-2) - IJ6- (I1-5) 20°C (68°F) 2.01 to 2.31 ohms Reconnect the injector driver (EDU) connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
28. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector resistance. Refer to «INSPECTION»(ref-387358-S21555254902011022400000) . Check the injector injection (whether fuel volume is high or low, and whether injection pattern is poor). Refer to «INSPECTION»(ref-387358-S21555254902011022400000) . NG --> See step 33 OK --> See step 36
29. CHANGE TO 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 all injector connectors. 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 electrode gap. NG --> See step 30 OK --> See step 32
30. CHANGE TO NORMAL IGNITION COIL AND CHECK SPARK OF MISFIRING CYLINDER NG --> See step 36 OK --> See step 37
31. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387359-S23628788162011022400000)
32. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-387367-S42919581292011022400000)
33. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-387358-S32087638642011022400000)
34. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-387363-S36167779392011022400000)
35. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-387363-S01991594592011022400000)
36. REPLACE ECM. Refer to «REMOVAL»(ref-387363-S31270846412011022400000)
37. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-387367-S42919581292011022400000)

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 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-387359-S29840200882011022400000) .

Scheme 264

Scheme 265

Scheme 266

Scheme 267

Scheme 268

1. READ OUTPUT DTC (CHECK KNOCK SENSOR CIRCUIT) Disconnect the EG1 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 Techstream to the DLC3. Turn the engine switch on (IG) and turn Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Display Proceed to DTCs same as when vehicle brought in P0327, P0328 --> P0327, P0328 or P0332, P0333 --> P0332, P0333 A DTCs different from when vehicle brought in P0327, P0328 --> P0332, P0333 or P0332, P0333 --> P0327, P0328 B Reconnect the EG1 connector. B --> See step 4 A: Go to next step
2. CHECK WIRE HARNESS AND CONNECTOR (CONNECTOR - ECM) Disconnect the EG1 connector. Disconnect the E4 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition EG1 female connector 4 - KNK1 (E4-28) Below 1 ohms EG1 female connector 5 - EKNK (E4-30) Below 1 ohms EG1 female connector 1 - KNK2 (E4-29) Below 1 ohms EG1 female connector 2 - EKN2 (E4-31) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition EG1 female connector 4 or KNK1 (E4-28) - Body ground 10 kohms or higher EG1 female connector 5 or EKNK (E4-30) - Body ground 10 kohms or higher EG1 female connector 1 or KNK2 (E4-29) - Body ground 10 kohms or higher EG1 female connector 2 or EKN2 (E4-31) - Body ground 10 kohms or higher Reconnect the EG1 connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ECM Disconnect the EG1 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 EG1 female connector 4 - 5 4.5 to 5.5 V EG1 female connector 1 - 2 4.5 to 5.5 V Reconnect the EG1 connector. NG --> REPLACE ECM OK --> CHECK FOR INTERMITTENT PROBLEMS
4. INSPECT KNOCK SENSOR Disconnect the EG1 connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition EG1 male connector 4 - 5 120 to 280 kohms EG1 male connector 1 - 2 120 to 280 kohms Reconnect the EG1 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 EG1 connector. Disconnect the G1 and G2 knock sensor connectors. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition EG1 male connector 4 - G1-2 Below 1 ohms EG1 male connector 5 - G1-1 Below 1 ohms EG1 male connector 1 - G2-2 Below 1 ohms EG1 male connector 2 - G2-1 Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition EG1 male connector 4 or G1-2 - Body ground 10 kohms or higher EG1 male connector 5 or G1-1 - Body ground 10 kohms or higher EG1 male connector 1 or G2-2 - Body ground 10 kohms or higher EG1 male connector 2 or G2-1 - Body ground 10 kohms or higher Reconnect the EG1 connector. Reconnect the knock sensor connector. 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 Techstream. To check, follow the operation below: Connect Techstream to the DLC3. Start the engine. Turn the tester on. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed. The engine speed may be indicated as zero 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 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-387359-S29840200882011022400000) .

Scheme 269

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1. INSPECT CRANKSHAFT POSITION SENSOR Disconnect the E9 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 coils. "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 E9 CKP sensor connector. Disconnect the E3 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition E9-1 - NE+ (E3-32) Below 1 ohms E9-2 - NE- (E3-31) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition E9-1 or NE+ (E3-32) - Body ground 10 kohms or higher E9-2 or NE- (E3-31) - Body ground 10 kohms or higher Reconnect the ECM connector. Reconnect the CKP sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK CRANK POSITION SENSOR (SENSOR INSTALLATION) Check the CKP sensor installation. OK Sensor is installed correctly. NG --> REPAIR OR REPLACE CRANK POSITION 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 POSITION SENSOR PLATE OK --> REPLACE ECM

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 .

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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 Tester Connection Specified Condition VV1+ (E3-21) - VV1- (E3-20) Correct waveform appears as shown VV2+ (E3-19) - VV2- (E3-18) Correct waveform appears as shown NE+ (E3-32) - NE- (E3-31) Correct waveform appears as shown OK --> REPLACE ECM NG: Go to next step
2. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the E19 or E30 VVT sensor connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition VC (E19-3) - Body ground 4.5 to 5.0 V VC (E30-3) - Body ground 4.5 to 5.0 V Reconnect the VVT sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE CAMSHAFT - ECM) Disconnect the E19 or E30 VVT sensor connector. Disconnect the E3 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition VVR+ (E19-1) - VV1+ (E3-21) Below 1 ohms VVR- (E19-2) - VV1- (E3-20) Below 1 ohms VVL+ (E30-1) - VV2+ (E3-19) Below 1 ohms VVL- (E30-2) - VV2- (E3-18) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition VVR+ (E19-1) or VV1+ (E3-21) - Body ground 10 kohms or higher VVR- (E19-2) or VV1- (E3-20) - Body ground 10 kohms or higher VVL+ (E30-1) or VV2+ (E3-19) - Body ground 10 kohms or higher VVL- (E30-2) or VV2- (E3-18) - Body ground 10 kohms or higher Reconnect the VVT sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK VVT SENSOR FOR INTAKE CAMSHAFT (SENSOR INSTALLATION) Check the CKP sensor installation. OK Sensor is installed correctly. NG --> REPAIR OR REPLACE VVT 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

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 .

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1. PERFORM SIMULATION TEST Clear the DTC(s). Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Change the arrangement of the ignition coils (with igniters). NOTE: Do not change the location of the connectors. Reform a simulation test. Result Display (DTC Output) Proceed to Same DTCs (that have been erased) A Other DTCs B B --> REPLACE IGNITION COIL ASSEMBLY (MALFUNCTION CYLINDER) A: Go to next step
2. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the E22, E32, E23, Z1, E24 or Z2 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 E22-1 - Body ground 9 to 14 V E32-1 - Body ground 9 to 14 V E23-1 - Body ground 9 to 14 V Z1-1 - Body ground 9 to 14 V E24-1 - Body ground 9 to 14 V Z2-1 - Body ground 9 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition E22-4 - Body ground Below 1 ohms E32-4 - Body ground Below 1 ohms E23-4 - Body ground Below 1 ohms Z1-4 - Body ground Below 1 ohms E24-4 - Body ground Below 1 ohms Z2-4 - 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 E22, E32, E23, Z1, E24 or Z2 ignition coil connector. Disconnect the ECM E5 and E3 connectors. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition IGT1 (E22-3) - IGT1 (E5-13) Below 1 ohms IGT2 (E32-3) - IGT2 (E3-17) Below 1 ohms IGT3 (E23-3) - IGT3 (E5-10) Below 1 ohms IGT4 (Z1-3) - IGT4 (E5-12) Below 1 ohms IGT5 (E24-3) - IGT5 (E3-27) Below 1 ohms IGT6 (Z2-3) - IGT6 (E3-26) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition IGT1 (E22-3) or IGT1 (E5-13) - Body ground 10 kohms or higher IGT2 (E32-3) or IGT2 (E3-17) - Body ground 10 kohms or higher IGT3 (E23-3) or IGT3 (E5-10) - Body ground 10 kohms or higher IGT4 (Z1-3) or IGT4 (E5-12) - Body ground 10 kohms or higher IGT5 (E24-3) or IGT5 (E3-27) - Body ground 10 kohms or higher IGT6 (Z2-3) or IGT6 (E3-26) - Body ground 10 kohms or higher Standard resistance (Check for open) Tester Connection Specified Condition IGF1 (E22-2) - IGF1 (E5-7) Below 1 ohms IGF2 (E32-2) - IGF2 (E5-6) Below 1 ohms IGF3 (E23-2) - IGF1 (E5-7) Below 1 ohms IGF4 (Z1-2) - IGF2 (E5-6) Below 1 ohms IGF5 (E24-2) - IGF1 (E5-7) Below 1 ohms IGF6 (Z2-2) - IGF2 (E5-6) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition IGF1 (E22-2) or IGF1 (E5-7) - Body ground 10 kohms or higher IGF2 (E32-2) or IGF2 (E5-6) - Body ground 10 kohms or higher IGF3 (E23-2) or IGF1 (E5-7)- Body ground 10 kohms or higher IGF4 (Z1-2) or IGF2 (E5-6) - Body ground 10 kohms or higher IGF5 (E24-2) or IGF1 (E5-7) - Body ground 10 kohms or higher IGF6 (Z2-2) or IGF2 (E5-6)- Body ground 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK ECM (IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGF1 AND IGF2 SIGNAL) Inspect the ECM using an oscilloscope. While cranking or idling, check the waveform of the ECM connectors. Standard Tester Connection Specified Condition IGF1 (E5-7) - E1 (E4-7) IGF2 (E5-6) - E1 (E4-7) IGT1 (E5-13) - E1 (E4-7) IGT2 (E3-17) - E1 (E4-7) IGT3 (E5-10) - E1 (E4-7) IGT4 (E5-12) - E1 (E4-7) IGT5 (E3-27) - E1 (E4-7) IGT6 (E3-26) - E1 (E4-7) Correct waveform is as shown NG --> REPLACE ECM OK: Go to next step
5. CHECK IF DTC OUTPUT RECURS Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-387359-S19593904092011022400000) . Connect Techstream to the DLC3. Turn the engine switch on (IG) and turn Techstream on. Enter the following menus: 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 --> END A --> REPLACE ECM

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 .

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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 Tester Connection Specified Condition EV1+ (E5-19) - EV1- (E5-18) Correct waveform appears as shown EV2+ (E6-13) - EV2- (E6-12) Correct waveform appears as shown NE+ (E3-32) - NE- (E3-31) Correct waveform appears as shown OK --> REPLACE ECM NG: Go to next step
2. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the E25 or E34 VVT sensor connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition VC2 (E25-3) - Body ground 4.5 to 5.0 V VC2 (E34-3) - Body ground 4.5 to 5.0 V Reconnect the VVT sensor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (VVT SENSOR - ECM) Disconnect the E25 or E34 VVT sensor connector. Disconnect the E5 or E6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) Tester Connection Specified Condition EX+ (E25-1) - EV1+ (E5-19) Below 1 ohms EX- (E25-2) - EV1- (E5-18) Below 1 ohms EX+ (E34-1) - EV2+ (E6-13) Below 1 ohms EX- (E34-2) - EV2- (E6-12) Below 1 ohms Standard resistance (Check for short) Tester Connection Specified Condition EX+ (E25-1) or EV1+ (E5-19) - Body ground 10 kohms or higher EX- (E25-2) or EV1- (E5-18) - Body ground 10 kohms or higher EX+ (E34-1) or EV2+ (E6-13) - Body ground 10 kohms or higher EX- (E34-2) or EV2- (E6-12) - Body ground 10 kohms or higher Reconnect the VVT sensor connector. Reconnect the ECM connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK VVT SENSOR FOR EXHAUST CAMSHAFT (SENSOR INSTALLATION) Check the VVT sensor installation. OK Sensor is installed correctly. NG --> REPAIR OR REPLACE VVT SENSOR OK: Go to next step
5. CHECK EXHAUST CAMSHAFT Check the teeth of the camshaft. NG --> REPLACE EXHAUST CAMSHAFT OK --> REPLACE VVT SENSOR