Engine Control (Sfi) (Diagnostic Codes (P0010-P0451): Diagnosis Lexus LX J200

INSPECTION PROCEDURE

HINT

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

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1. CHECK DTC Clear DTC after recording the freeze frame data and DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Turn the engine switch off. Allow the engine to idle and check DTC. Check that P0010 or P0020 is not output. OK P0010 or P0020 is not output. NG --> See step 2 OK --> See step 6
2. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY Disconnect the C24 or C25 camshaft oil control valve (OCV) 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 NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the C24 or C25 OCV connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C24-1 - C53-58 (OC1+) Always Below 1 ohms C25-1 - C53-52 (OC2+) Always Below 1 ohms C24-2 - C53-57 (OC1-) Always Below 1 ohms C25-2 - C53-51 (OC2-) Always Below 1 ohms C24-1 or C53-58 (OC1+) - Body ground Always 10 kohms or higher C25-1 or C53-52 (OC2+) - Body ground Always 10 kohms or higher C24-2 or C53-57 (OC1-) - Body ground Always 10 kohms or higher C25-2 or C53-51 (OC2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
4. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
5. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-385180-S36360852422011021400000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)

HINT

DTC P0011, P0012, P0021 or P0022 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.

HINT

1. If DTC P0011 or P0012 is output, check the left bank VVT system for intake side circuit (for Bank 1).
2. Bank 1 refers to the bank that includes the No. 1 cylinder.
3. If DTC P0021 or P0022 is output, check the right bank VVT system for intake side circuit (for Bank 2).
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0011, P0012, P0021 or P0022 is output A P0011, P0012, P0021 or P0022 and other DTCs are output B HINT: If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. 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 Camshaft Oil Control Valve (OCV) using the Techstream. OK Operation Specified Condition OCV OFF Normal engine speed OCV ON Soon after OCV switched from OFF to ON, engine idles roughly or stalls NG --> See step 5 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream. Drive the vehicle for more than 10 minutes. Read DTCs using the Techstream. OK No DTC output. NG --> See step 5 OK --> See step 4
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
5. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TOOTH OF TIMING CHAIN) Remove the cylinder head cover LH and RH. 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 and camshaft timing exhaust gears are at the positions shown in the illustration. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. NG --> See step 10 OK: Go to next step
6. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY Remove the OCV. 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 Check the valve operation. OK Measurement Condition Specified Condition No battery voltage applied to terminals 1 and 2 --> Battery voltage applied to terminals 1 and 2 Valve moves quickly NG --> See step 11 OK: Go to next step
7. INSPECT OIL CONTROL VALVE FILTER Remove the OCV filter. Refer to «DISASSEMBLY»(ref-385174-S12110249312011021400000) . Check that the filter is not clogged. OK Filter is not clogged. NG --> CLEAN OIL CONTROL VALVE FILTER OK: Go to next step
8. REPLACE INTAKE CAMSHAFT TIMING GEAR Replace the intake camshaft timing gear. Refer to «REMOVAL»(ref-385174-S02392549452011021400000) . NEXT: Go to next step
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
10. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-385174-S35598449532011021400000)
11. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-385180-S36360852422011021400000)
12. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine and warm it up. Switch the ECM from normal mode to check mode using the Techstream. Drive the vehicle for more than 10 minutes. Read the output DTCs using the Techstream. OK No DTC is output. HINT: DTC P0011, P0012, P0021 or P0022 is output when foreign objects in the engine oil are caught in some parts of the system. These codes will stay stored 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 --> See step 13 OK --> SYSTEM OK
13. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

1. If DTC P0013 is output, check the bank 1 VVT system for exhaust side circuit.
2. Bank 1 refers to the bank that includes the No. 1 cylinder.
3. If DTC P0023 is output, check the bank 2 VVT system for exhaust side circuit.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 271

1. CHECK DTC (DTC P0013 OR P0023) Connect the Techstream to the DLC3. Clear DTC after recording the freeze frame data and DTC. Turn the engine switch off. Allow the engine to idle and check DTC. Check that P0013 or P0023 is not output. OK P0013 or P0023 is not output. NG --> See step 2 OK --> See step 4
2. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY Disconnect the C26 or C27 OCV connector. Remove the camshaft oil control valve (OCV). Refer to «REMOVAL»(ref-385180-S36360852422011021400000) . 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 NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the C26 or C27 OCV connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C26-1 - C53-56 (OE1+) Always Below 1 ohms C26-2 - C53-55 (OE1-) Always Below 1 ohms C27-1 - C53-50 (OE2+) Always Below 1 ohms C27-2 - C53-49 (OE2-) Always Below 1 ohms C26-1 or C53-56 (OE1+) - Body ground Always 10 kohms or higher C26-2 or C53-55 (OE1-) - Body ground Always 10 kohms or higher C27-1 or C53-50 (OE2+) - Body ground Always 10 kohms or higher C27-2 or C53-49 (OE2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
5. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(ref-385180-S36360852422011021400000)
6. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

1. If DTC P0014 or P0015 is output, check the bank 1 VVT system for exhaust side circuit.
2. Bank 1 refers to the bank that includes the No. 1 cylinder.
3. If DTC P0024 or P0025 is output, check the bank 2 VVT system for exhaust side circuit.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

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

HINT

Read freeze frame data using the Techstream. 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.

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1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the C47 or C48 Air-Fuel Ratio (A/F) sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher 1 (HA2A) - 2 (+B) 20°C (68°F) 1.8 to 3.4 ohms 1 (HA2A) - 4 (A2A-) Always 10 kohms or higher NG --> See step 6 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF A/F SENSOR) Disconnect the C47 or C48 A/F sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C47-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V C48-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V RESULT Result Proceed to NG A OK B B --> See step 7 A: Go to next step
3. INSPECT INTEGRATION RELAY (A/F) Remove the integration relay from the engine room relay block. Inspect the A/F fuse. Remove the A/F fuse from the integration relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A/F fuse Always Below 1 ohms Reinstall the A/F fuse. Inspect the integration relay (A/F). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1A-4 No battery voltage applied to terminals 1A-2 and 1A-3 10 kohms or higher Battery voltage applied to terminals 1A-2 and 1A-3 Below 1 ohms NG --> REPLACE INTEGRATION RELAY (A/F) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - A/F SENSOR AND BODY GROUND) Disconnect the C47 or C48 A/F sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-2 (+B) - 1A-4 Always Below 1 ohms C48-2 (+B) - 1A-4 Always Below 1 ohms 1A-2 - 1B-4 Always Below 1 ohms 1A-3 - Body ground Always Below 1 ohms C47-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher C48-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher 1A-2 or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
5. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-385202-S16463853352011021400000)
6. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-385180-S08600195632011021400000)
7. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the C47 or C48 A/F sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-1 (HA1A) - C53-22 (HA1A) Always Below 1 ohms C48-1 (HA2A) - C53-20 (HA2A) Always Below 1 ohms C47-1 (HA1A) or C53-22 (HA1A) - Body ground Always 10 kohms or higher C48-1 (HA2A) or C53-20 (HA2A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Allow the engine to idle for 1 minute or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No DTC is output A P0031, P0032, P0051 or P0052 is output B B --> See step 10 A --> See step 9
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

1. Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located far from the engine assembly.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

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1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Disconnect the C17 or C18 heated oxygen (HO2) sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E1) Always 10 kohms or higher 1 (HT2B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT2B) - 4 (E1) Always 10 kohms or higher NG --> See step 6 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF HO2 SENSOR) Disconnect the C17 or C18 HO2 sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C17-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V C18-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V RESULT Result Proceed to NG A OK B B --> See step 7 A: Go to next step
3. INSPECT INTEGRATION RELAY (EFI) Remove the integration relay from the engine room relay block. Inspect the EFI MAIN fuse. Remove the EFI MAIN fuse from the integration relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI MAIN fuse Always Below 1 ohms Reinstall the EFI MAIN fuse. Inspect the EFI relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1B-4 No battery voltage applied to terminals 1B-2 and 1B-3 10 kohms or higher Battery voltage applied to terminals 1B-2 and 1B-3 Below 1 ohms NG --> REPLACE INTEGRATION RELAY (EFI) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (HO2 SENSOR - INTEGRATION RELAY) Check the EFI NO. 2 fuse. Remove the EFI NO. 2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 fuse Always Below 1 ohms Reinstall the EFI NO. 2 fuse. Disconnect the C17 or C18 HO2 sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C17-2 (+B) - 1B-4 Always Below 1 ohms C18-2 (+B) - 1B-4 Always Below 1 ohms C17-2 (+B) or 1B-4 - Body ground Always 10 kohms or higher C18-2 (+B) or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
5. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-385202-S16463853352011021400000)
6. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-385180-S30716859182011021400000)
7. CHECK HARNESS AND CONNECTOR (HO2 SENSOR - ECM) Disconnect the C17 or C18 HO2 sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C17-1 (HT1B) - C53-45 (HT1B) Always Below 1 ohms C18-1 (HT2B) - C53-44 (HT2B) Always Below 1 ohms C17-1 (HT1B) or C53-45 (HT1B) - Body ground Always 10 kohms or higher C18-1 (HT2B) or C53-44 (HT2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Allow the engine to idle for 2 minutes or more. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No DTC is output A P0037, P0038, P0057, P0058, P0141 and/or P0161 are output B B --> See step 10 A --> See step 9
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
10. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

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

HINT

Read freeze frame data using the Techstream. 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.

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1. READ VALUE USING TECHSTREAM (MASS AIR FLOW RATE) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF. Read the values displayed on the Techstream. RESULT Mass Air Flow Rate (g/sec.) Proceed to 0.0 A 271.0 or more B Between 1.0 and 270.0* C HINT: *: The value must change when the throttle valve is open or closed with the engine running. C --> See step 5 B --> See step 10 A: Go to next step
2. INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Disconnect the C3 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 Switch Condition Specified Condition C3-1 (+B) - Body ground Engine switch on (IG) 11 to 14 V NG --> See step 8 OK: Go to next step
3. INSPECT MASS AIR FLOW METER Remove the Mass Air Flow (MAF) meter. Refer to «REMOVAL»(ref-385180-S06546023872011021400000) . Inspect the MAF meter. Measure the voltage according to the value(s) in the table below. OK Tester Connection Condition Specified Condition 2 (E2G) - 3 (VG) Battery voltage applied to terminals 1 (+B) - 2 (E2G) Air blown into the MAF meter Voltage fluctuates NOTE: While using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur. NG --> See step 6 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the C3 MAF meter connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
6. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
8. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY) Check the EFI NO. 2 fuse. Remove the EFI NO. 2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 fuse Always Below 1 ohms Reinstall the EFI NO. 2 fuse. Disconnect the C3 MAF meter connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-1 (+B) - 1B-4 Always Below 1 ohms C3-1 (+B) or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
9. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-385202-S16463853352011021400000)
10. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the C3 MAF meter connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the C3 MAF meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-2 (E2G) - Body ground Always Below 1 ohms NG --> See step 13 OK --> See step 12
12. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
13. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

Scheme 286

1. The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes see scheme 1
2. The IAT sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
3. Resistor R and the IAT sensor are connected in series. When the resistance value of the IAT sensor changes, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability. HINT: When any of DTCs P0110, P0112 and P0113 is stored, the ECM enters fail-safe mode. During fail-safe mode, the IAT is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is detected.

HINT

When any of these DTCs are output, check the IAT by entering the following menus: Powertrain / Engine and ECT / All Data / Intake Air.

HINT

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

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1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0110 is output A P0112 is output B P0113 is output C C --> See step 3 B --> See step 8 A: Go to next step
2. READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard Same as actual Intake Air Temperature (IAT). RESULT Result Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Same as actual IAT C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. C --> See step 5 B --> See step 8 A: Go to next step
3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the C3 Mass Air Flow (MAF) meter connector. Connect terminals 4 (THA) and 5 (E2) of the MAF meter wire harness side connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher NG --> See step 4 OK --> See step 6
4. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the C3 MAF meter connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-4 (THA) - C53-73 (THA) Always Below 1 ohms C3-5 (E2) - C53-97 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
6. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
7. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
8. PERFORM ACTIVE TEST USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the C3 MAF meter connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) NG --> See step 9 OK --> See step 10
9. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the C3 MAF meter connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-4 (THA) or C53-73 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
10. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
11. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

Scheme 291

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

HINT

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

HINT

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

Scheme 292

Scheme 293

Scheme 294

Scheme 295

1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0115 is output A P0117 is output B P0118 is output C C --> See step 3 B --> See step 8 A: Go to next step
2. READ VALUE USING TECHSTREAM (ENGINE COOLANT TEMPERATURE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 80 and 100°C (167 and 212°F) with warm engine. RESULT Result Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Between 80 and 100°C (176 and 212°F) C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. C --> See step 5 B --> See step 8 A: Go to next step
3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the C15 Engine Coolant Temperature (ECT) sensor connector. Connect terminals 1 and 2 of the ECT sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher NG --> See step 4 OK --> See step 6
4. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the C15 ECT sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C15-2 - C53-76 (THW) Always Below 1 ohms C15-1 - C53-98 (ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
6. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-385180-S19738057722011021400000)
7. GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
8. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the C15 ECT sensor connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value -40°C (-40°F) NG --> See step 9 OK --> See step 10
9. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the C15 ECT sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C15-2 or C53-76 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
10. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-385180-S19738057722011021400000)
11. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

1. If any of DTCs P0115, P0117, P0118 or P0125 is output simultaneously with DTC P0116, the ECT sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

1. These DTCs relate to the Throttle Position (TP) sensor.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 296

Scheme 297

1. READ VALUE USING TECHSTREAM (THROTTLE POSITION) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / ETCS / Throttle Position No. 1 and Throttle Position No. 2. Check the values displayed on the Techstream. RESULT TP#1 (VTA1) When Accelerator Pedal Released TP#2 (VTA2) When Accelerator Pedal Released TP#1 (VTA1) When Accelerator Pedal Depressed TP#2 (VTA2) When Accelerator Pedal Depressed Trouble Area Proceed to 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V E2 circuit open A 0 to 0.2 V, or 4.5 to 5.0 V 2.4 to 3.4 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 2.4 to 3.4 V (Fail-safe) VTA1 circuit open or ground short A 0.7 to 1.3 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 0.7 to 1.3 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V VTA2 circuit open or ground short A 0.5 to 1.1 V 2.1 to 3.1 V 3.3 to 4.9 V (Not fail-safe) 4.6 to 5.0 V (Not fail-safe) TP sensor circuit normal B HINT: TP#1 stands for Throttle Position No. 1, and TP#2 stands for Throttle Position No. 2. B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the C4 throttle body connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C4-5 (VC) - C53-80 (VCTA) Always Below 1 ohms C4-6 (VTA) - C53-78 (VTA1) Always Below 1 ohms C4-4 (VTA2) - C53-77 (VTA2) Always Below 1 ohms C4-3 (E2) - C53-79 (ETA) Always Below 1 ohms C4-5 (VC) or C53-80 (VCTA) - Body ground Always 10 kohms or higher C4-6 (VTA) or C53-78 (VTA1) - Body ground Always 10 kohms or higher C4-4 (VTA2) or C53-77 (VTA2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ECM (VC VOLTAGE) Disconnect the C4 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 Switch Condition Specified Condition C4-5 (VC) - C4-3 (E2) Engine switch on (IG) 4.5 to 5.5 V NG --> See step 6 OK: Go to next step
4. REPLACE THROTTLE BODY ASSEMBLY Replace the throttle body assembly. Refer to «REMOVAL»(ref-385180-S20571009392011021400000) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . 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 Result Proceed to P0120, P0122, P0123, P0220, P0222, P0223 and/or P2135 are output A No DTC is output B B --> SYSTEM OK A --> See step 7
6. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
7. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

1. This DTC relates to the Throttle Position (TP) sensor.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

1. If any of DTCs P0115, P0116, P0117 or P0118 is output simultaneously with DTC P0125, the Engine Coolant Temperature (ECT) sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

HINT

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

HINT

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

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

1. Connect the Techstream to the DLC3.
2. Start the engine and turn the Techstream on.
3. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F sensor.
5. Perform the Active Test 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 Techstream.

HINT

1. The Control the Injection Volume for A/F sensor operation lowers the fuel injection volume by 12.5% or increases the injection volume by 25%.
2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Note. The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen (HO2) sensor has a maximum output delay of approximately 20 seconds.

Case A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 HO2 sensor HO2 sensor heater HO2 sensor circuit 4 Fuel injector Fuel pressure Gas leakage from exhaust system (Air-fuel ratio extremely rich or lean)

Scheme 298

Scheme 299

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 B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.

HINT

1. If other DTCs relating to different systems that have terminal E1 as the ground terminal are output simultaneously, terminal E1 may have an open circuit.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. If the OX1B wire from the ECM connector is short-circuited to the +B wire, DTC P0136 will be stored.
4. If the OX2B wire from the ECM connector is short-circuited to the +B wire, DTC P0156 will be stored.

Scheme 300

Scheme 301

Scheme 302

Scheme 303

Scheme 304

Scheme 305

1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0138 or P0158 is output A P0137 or P0157 is output B P0136 or P0156 is output C P0139 or P0159 is output D D --> See step 36 C --> See step 6 B --> See step 16 A: Go to next step
2. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / O2S B1S2 or O2S B2S2. Allow the engine to idle. Read the Heated Oxygen (HO2) sensor output voltage while idling. Standard voltage Below 1.0 V NG --> See step 3 OK --> See step 5
3. CHECK HEATED OXYGEN SENSOR Disconnect the C17 or C18 HO2 sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 3 (OX1B) Always 10 kohms or higher 2 (+B) - 4 (E1) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Always 10 kohms or higher 2 (+B) - 4 (E1) Always 10 kohms or higher NG --> See step 24 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Turn the engine switch off and wait for 5 minutes. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-45 (HT1B) - C53-114 (OX1B) Always 10 kohms or higher C53-44 (HT2B) - C53-112 (OX2B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 34
5. CHECK AIR FUEL RATIO SENSOR HINT: This Air-Fuel Ratio (A/F) sensor test is to check the A/F sensor current during the fuel cut. When the sensor is normal, the sensor current will indicate below 3 mA in this test. Clear DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Drive the vehicle by the drive pattern as listed below: Warm up the engine. Drive the vehicle at 60 km/h (40 mph) or more for 10 minutes or more. Stop the vehicle. Accelerator the vehicle until 60 km/h (40 mph) or more and decelerate for 5 seconds or more. Perform this 3 times. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details. Confirm that RANGE B1S1 and RANGE B2S1 are either Pass or Fail. If the Techstream shows incomplete, Re-check RANGE B1S1 and RANGE B2S1 after performing the drive pattern. HINT: If the Techstream shows incomplete again, add the vehicle speed and use the second gear to decelerate the vehicle. Select RANGE B1S1 or RANGE B2S1 and press ENTER. Read the test value. Standard current Below 3.0 mA NOTE: Do not turn the engine switch off during this step because the test results will be lost. NG --> See step 22 OK --> See step 20
6. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / O2S B1S2 or O2S B2S2. After warming up the engine, run the engine at an engine speed of 2,500 rpm for 3 minutes. Read the output voltage of the HO2 sensor when the engine speed is suddenly increased. HINT: Quickly accelerate the engine to 4,000 rpm 3 times using the accelerator pedal. Standard voltage Fluctuates between 0.4 V or less and 0.5 V or higher. NG --> See step 16 OK: Go to next step
7. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of Air-Fuel Ratio (A/F) and HO2 sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in 1% graduations within the range. The A/F sensor is displayed as AFS Voltage B1S1 or AFS Voltage B2S1, and the HO2 sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream. RESULT Display Item (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 (A/F) AFS Voltage B2S1 (A/F) Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal HO2 sensor voltage (O2S B1S2 or O2S B2S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either less or higher than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning. NG --> See step 22 OK: Go to next step
8. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leakage. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
9. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-385210-S35705251302011021400000) . NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
10. INSPECT FUEL INJECTOR (INJECTION AND VOLUME) Check the injection volume. Refer to «INSPECTION - Step 1»(ref-385205-S07443860352011021400000) . NG --> See step 25 OK: Go to next step
11. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-385180-S28966604612011021400000) . NG --> See step 26 OK: Go to next step
12. INSPECT ENGINE COOLANT TEMPERATURE SENSOR Inspect the engine coolant temperature sensor. Refer to «INSPECTION»(ref-385180-S03050784492011021400000) . NG --> See step 27 OK: Go to next step
13. INSPECT PCV HOSE Check the PCV hose connections. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-385208-S38789396022011021400000) . OK PCV hose is connected correctly and is not damaged. NG --> See step 28 OK: Go to next step
14. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK No leakage from air induction system. NG --> See step 29 OK: Go to next step
15. CHECK SPARKS AND IGNITION See step 8 NG --> See step 30 OK --> See step 35
16. CHECK FOR EXHAUST GAS LEAK OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAKAGE POINT OK: Go to next step
17. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 31 OK: Go to next step
18. INSPECT INTEGRATION RELAY (EFI RELAY) See step 3 NG --> REPLACE INTEGRATION RELAY OK: Go to next step
19. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the C17 or C18 HO2 sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C17-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V C18-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V Turn the engine switch off. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C17-1 (HT1B) - C53-45 (HT1B) Always Below 1 ohms C17-3 (OX1B) - C53-114 (OX1B) Always Below 1 ohms C17-4 (E1) - C53-115 (EX1B) Always Below 1 ohms C18-1 (HT2B) - C53-44 (HT2B) Always Below 1 ohms C18-3 (OX2B) - C53-112 (OX2B) Always Below 1 ohms C18-4 (E1) - C53-113 (EX2B) Always Below 1 ohms C17-1 (HT1B) or C53-45 (HT1B) - Body ground Always 10 kohms or higher C17-3 (OX1B) or C53-114 (OX1B) - Body ground Always 10 kohms or higher C18-1 (HT2B) or C53-44 (HT2B) - Body ground Always 10 kohms or higher C18-3 (OX2B) or C53-112 (OX2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
20. REPLACE HEATED OXYGEN SENSOR Replace the heated oxygen sensor. Refer to «REMOVAL»(ref-385180-S30716859182011021400000) . NEXT: Go to next step
21. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher. Drive the vehicle at 60 to 120 km/h (40 to 75 mph) for at least 10 minutes. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more. Perform this 3 times. Turn the Techstream on. Enter the following menus: 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 drive pattern adding the vehicle speed and using the second gear to decelerate the vehicle. OK No DTC is output. NG --> See step 32 OK --> REPAIR COMPLETE
22. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-385180-S08600195632011021400000) . NEXT: Go to next step
23. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher. Drive the vehicle at 60 to 120 km/h (40 to 75 mph) for at least 10 minutes. Drive the vehicle at 60 km/h (40 mph) or more and decelerate the vehicle for 5 seconds or more. Perform this 3 times. Enter the following menus: 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 drive pattern adding the vehicle speed and using the second gear to decelerate the vehicle. OK No DTC is output. NG --> See step 33 OK --> REPAIR COMPLETE
24. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-385180-S30716859182011021400000)
25. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-385205-S13608547102011021400000)
26. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
27. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-385180-S19738057722011021400000)
28. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-385179-S06651788502011021400000)
29. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-385209-S10769205742011021400000)
30. REPAIR OR REPLACE IGNITION SYSTEM. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)
31. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-385180-S30716859182011021400000)
32. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-385180-S08600195632011021400000)
33. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-385180-S30716859182011021400000)
34. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
35. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
36. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / O2S B1S2 or O2S B2S2. After warming up the engine, run the engine at an engine speed of 2500 rpm for 3 minutes. Engine is idling. Depress the accelerator pedal quickly until the engine speed reaches 2500 rpm 3 times. RESULT Result Proceed to Higher than 1.0 V A Below 1.0 V B B --> See step 39 A: Go to next step
37. INSPECT HEATED OXYGEN SENSOR Disconnect the C17 or C18 HO2 sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 3 (OX1B) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Always 10 kohms or higher 2 (+B) - 4 (E1) Always 10 kohms or higher NG --> See step 41 OK: Go to next step
38. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-45 (HT1B) - C53-114 (OX1B) Always 10 kohms or higher C53-44 (HT2B) - C53-112 (OX2B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 43
39. PERFORM CONFIRMATION DRIVING PATTERN HINT: Refer to the CONFIRMATION DRIVING PATTERN. NEXT: Go to next step
40. READ DTC OUTPUT (DTC P0139 OR P0159 IS OUTPUT AGAIN) Read the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . RESULT Result Proceed to P0139 or P0159 is output A No DTC is output B B --> See step 42 A --> See step 44
41. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-385180-S30716859182011021400000)
42. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
43. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
44. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(ref-385180-S30716859182011021400000)

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would cause the engine to run rich.
3. A high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.

Scheme 306

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0171, P0172, P0174 OR P0175) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0171, P0172, P0174 or P0175 is output A P0171, P0172, P0174 or P0175 and other DTCs are output B HINT: If any DTCs other than P0171, P0172, P0174 or P0175 are output, troubleshoot those DTCs first. B --> See step 17 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (A/F CONTROL) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds. 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 A/F and HO2 sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream. Result The A/F sensor reacts in accordance with increases and decreases in the fuel injection volume: +25% = Rich output Below 3.1 V -12.5% = Lean output Higher than 3.4 V NOTE: The A/F sensor has an output delay of a few seconds and the HO2 sensor has a maximum output delay of approximately 20 seconds. Case A/F Sensor (Sensor 1) Output Voltage HO2 Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 A/F sensor A/F sensor heater A/F sensor circuit 3 Fuel injector Fuel pressure Gas leakage from exhaust system (Air-fuel ratio extremely rich or lean) 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. 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 B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2. RESULT Result Proceed to Case 1 C Case 2 B Case 3 A C --> See step 15 B --> See step 11 A: Go to next step
3. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-385180-S28966604612011021400000) . NG --> See step 18 OK: Go to next step
4. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / 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°C and 100°C (167°F and 212°F). NG --> See step 19 OK: Go to next step
5. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-385208-S38789396022011021400000) . OK PCV hose is connected correctly and is not damaged. NG --> See step 20 OK: Go to next step
6. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK No leakage from air induction system. NG --> See step 21 OK: Go to next step
7. CHECK FOR SPARKS AND IGNITION See step 8 NG --> See step 22 OK: Go to next step
8. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leakage. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST SYSTEM OK: Go to next step
9. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-385210-S35705251302011021400000) . NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
10. INSPECT FUEL INJECTOR (INJECTION AND VOLUME) Check the injection volume. Refer to «INSPECTION - Step 1»(ref-385205-S07443860352011021400000) . NG --> See step 23 OK: Go to next step
11. INSPECT AIR-FUEL RATIO SENSOR (HEATER RESISTANCE) See step 1 NG --> See step 24 OK: Go to next step
12. INSPECT INTEGRATION RELAY (A/F RELAY) See step 3 NG --> REPLACE INTEGRATION RELAY OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM). Refer to «PROCEDURE - Step 12»(ref-385202-S36583067542011021400000) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
14. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(ref-385180-S08600195632011021400000) . NEXT: Go to next step
15. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Switch the ECM from normal mode to check mode using the Techstream. Refer to «CHECK MODE PROCEDURE»(ref-385195-S37337289382011021400000) . Start the engine and warm it up with all the accessories switched off. Drive the vehicle at between 60 km/h and 120 km/h (38 mph and 75 mph) and at an engine speed of between 1400 rpm and 3200 rpm for 3 to 5 minutes. HINT: If the system is still malfunctioning, the MIL will be illuminated during step (f). NOTE: If the conditions in this test are not strictly followed, no malfunction will be detected. NEXT: Go to next step
16. CHECK WHETHER DTC OUTPUT RECURS (DTC P0171, P0172, P0174 OR P0175) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. Read DTCs. RESULT Result Proceed to No DTC is output A P0171, P0172, P0174 or P0175 is output B B --> See step 25 A --> END
17. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
18. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
19. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-385180-S19738057722011021400000)
20. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-385179-S06651788502011021400000)
21. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-385209-S10769205742011021400000)
22. REPAIR OR REPLACE IGNITION SYSTEM. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)
23. REPLACE FUEL INJECTOR. Refer to «REMOVAL»(ref-385205-S13608547102011021400000)
24. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(ref-385180-S08600195632011021400000)
25. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

This troubleshooting procedure is based on the premise that the engine is started. If the engine is not started, proceed to the Problem Symptoms Table. Refer to PROBLEM SYMPTOMS TABLE .

Scheme 307

Scheme 308

Scheme 309

Scheme 310

Scheme 311

Scheme 312

Scheme 313

Scheme 314

1. CHECK FOR DTC (B1500) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Combination Meter / Trouble Codes. Read the DTC. RESULT Result Proceed to DTC B1500 is not output A DTC B1500 is output B B --> See step 18 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (FUEL PUMP) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed. Check whether operating sounds can be heard while operating the fuel pump using the Techstream. OK Operating sounds can be heard from fuel pump. NG --> See step 6 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM, BODY GROUND) Disconnect the N2 fuel pump ECU connector. Disconnect the A38 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N2-5 (FPC) - A38-52 (FPC) Always Below 1 ohms N2-4 (DI) - A38-18 (DI) Always Below 1 ohms N2-6 (E) - Body ground Always Below 1 ohms N2-1 (FP-) - Body ground Always 10 kohms or higher N2-5 (FPC) or A38-52 (FPC) - Body ground Always 10 kohms or higher N2-4 (DI) or A38-18 (DI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. REPLACE FUEL PUMP ECU Replace the fuel pump ECU. Refer to «REMOVAL»(ref-385205-S12575805932011021400000) . NEXT: Go to next step
5. CONFIRM WHETHER DTC OUTPUT RECURS Check that there are 17 liters or more of fuel remaining. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Crank the engine for 15 seconds. Idle it for 1 minute. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC P0230 is output B B --> See step 19 A --> END
6. INSPECT CIRCUIT OPENING RELAY (C/OPN) Remove the circuit opening relay (C/OPN) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 No battery voltage applied to terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE CIRCUIT OPENING RELAY (C/OPN) OK: Go to next step
7. INSPECT CIRCUIT OPENING RELAY (POWER SOURCE VOLTAGE) Remove the circuit opening relay (C/OPN) from the engine room relay block. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C/OPN relay (2) - Body ground Engine switch on (IG) 11 to 14 V C/OPN relay (5) - Body ground Engine switch on (IG) 11 to 14 V NG --> See step 14 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (CIRCUIT OPENING RELAY (C/OPN) - ECM, FUEL PUMP ECU) Remove the circuit opening relay (C/OPN) from the engine room relay block. Disconnect the A38 ECM connector. Disconnect the N2 fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C/OPN relay (1) - A38-48 (FC) Always Below 1 ohms C/OPN relay (3) - N2-3 (+B) Always Below 1 ohms C/OPN relay (1) or A38-48 (FC) - Body ground Always 10 kohms or higher C/OPN relay (3) or N2-3 (+B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PUMP ECU) Disconnect the N1 fuel pump connector. Disconnect the N2 fuel pump ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N1-4 (B2) - N2-2 (FP) Always Below 1 ohms N1-5 (E2) - N2-1 (FP-) Always Below 1 ohms N1-4 (B2) or N2-2 (FP) - Body ground Always 10 kohms or higher N1-5 (E2) or N2-1 (FP-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. INSPECT FUEL PUMP Inspect the fuel pump. Refer to «INSPECTION - Step 1»(ref-385205-S17341431172011021400000) . NG --> See step 20 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM, BODY GROUND) Disconnect the N2 fuel pump ECU connector. Disconnect the A38 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition N2-5 (FPC) - A38-52 (FPC) Always Below 1 ohms N2-4 (DI) - A38-18 (DI) Always Below 1 ohms N2-6 (E) - Body ground Always Below 1 ohms N2-5 (FPC) or A38-52 (FPC) - Body ground Always 10 kohms or higher N2-4 (DI) or A38-18 (DI) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. REPLACE FUEL PUMP ECU Replace the fuel pump ECU. Refer to «REMOVAL»(ref-385205-S12575805932011021400000) . NEXT: Go to next step
13. CONFIRM WHETHER DTC OUTPUT RECURS Check that there is 17 liters or more of fuel remaining. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Crank the engine for 15 seconds. Idle it for 1 minute. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC is not output A DTC P0230 is output B B --> See step 21 A --> END
14. CHECK HARNESS AND CONNECTOR (C/OPN RELAY - EFI NO. 2 RELAY, IGN FUSE) Remove the circuit opening relay (C/OPN) from the engine room relay block. Remove the EFI NO. 2 relay (EFI NO. 2) from the engine room relay block. Remove the IGN fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C/OPN relay (2) - IGN fuse (2) Always Below 1 ohms C/OPN relay (5) - EFI NO. 2 relay (3) Always Below 1 ohms C/OPN relay (2) or IGN fuse (2) - Body ground Always 10 kohms or higher C/OPN relay (5) or EFI NO. 2 relay (3) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
15. INSPECT EFI NO. 2 RELAY (EFI NO. 2) Remove the EFI NO. 2 relay (EFI NO. 2) from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 No battery voltage applied to terminals 1 and 2 10 kohms or higher 3 - 5 Battery voltage applied to terminals 1 and 2 Below 1 ohms NG --> REPLACE EFI NO. 2 RELAY (EFI NO. 2) OK: Go to next step
16. CHECK HARNESS AND CONNECTOR (EFI NO. 2 RELAY - INTEGRATION RELAY, BATTERY, BODY GROUND) Remove the EFI MAIN 2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI MAIN 2 fuse Always Below 1 ohms Reinstall the EFI MAIN 2 fuse. Remove the EFI NO. 2 relay (EFI NO. 2) from the engine room relay block. Remove the integration relay from the engine room relay block. Disconnect the 1B integration relay connector. Disconnect the cable from the battery positive (+) terminal. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 relay (1) - 1B-4 Always Below 1 ohms EFI NO. 2 relay (5) - Positive (+) battery cable Always Below 1 ohms EFI NO. 2 relay (2) - Body ground Always Below 1 ohms EFI NO. 2 relay (1) or 1B-4 - Body ground Always 10 kohms or higher EFI NO. 2 relay (5) or Positive (+) battery cable - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 17
17. GO TO ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(ref-385202-S16463853352011021400000)
18. GO TO DTC B1500. Refer to «DTC B1500: Fuel Sender Open Detected»(ref-385211-S37596091552011021400000)
19. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
20. REPLACE FUEL PUMP. Refer to «INSPECTION - Step 1»(ref-385205-S17341431172011021400000)
21. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

Scheme 315

When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high HC concentration levels can cause increases in exhaust emission levels. High concentrations of HC can also cause increases in the Three-Way Catalytic Converter (TWC) temperature, which may cause damage to the TWC. To prevent these increases in emissions and to limit the possibility of thermal damage, the ECM monitors the misfire rate. When the temperature of the TWC reaches the point of thermal degradation, the MIL blinks. To monitor misfires, the ECM uses both the Camshaft Position (CMP) sensor and the Crankshaft Position (CKP) sensor. The CMP sensor is used to identify any misfiring cylinders and the CKP sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted as when the crankshaft rotation speed variations exceed predetermined thresholds.

If the misfire rate exceeds the threshold level, the ECM illuminates the MIL and stores DTC(s).

When multiple DTCs for misfiring cylinders are stored, but DTC P0300 is not stored, it indicates that misfires have been detected in different cylinders at different times. DTC P0300 is only stored when several misfiring cylinders are detected at the same time.

HINT

1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the freeze frame data.
4. If the misfire still cannot be reproduced even though the conditions stored in the freeze frame data have been duplicated, one of the following factors is considered to be a possible cause of the problem: The fuel level is low. Improper fuel is used. The spark plugs are dirty.
5. After finishing repairs, check that no misfires occur in each cylinder (cylinder No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 7 and No. 8).
6. Be sure to confirm that no misfiring cylinder DTCs are output again by conducting the confirmation driving pattern after the repairs.
7. For 6 and 8 cylinder engines, the ECM intentionally does not store the specific misfiring cylinder DTCs at high engine speed. If misfires only occur during high engine speed driving, only DTC P0300 is stored. In the event of DTC P0300 being present, perform the following operations: Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the Techstream. Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not output.
8. When either 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 below 75°C (167°F), the misfires occurred only while warming up the engine.
10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs detection.

Scheme 316

Scheme 317

Scheme 318

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE CODES) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 are output A P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and P0308 are output, troubleshoot those DTCs first. B --> See step 29 A: Go to next step
2. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream the DLC3. Turn the engine switch on (IG) and turn the Techstream 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 Check the PCV hose connections. OK PCV hose is connected correctly and is not damaged. NG --> See step 30 OK: Go to next step
4. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. RESULT Data List Display Item Proceed to Catalyst OT MF F/C AVAIL (Avail) A NOT AVL (Not Avl) B B --> See step 6 A: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and either idling or being revved within 3,000 rpm. NEXT: Go to next step
6. READ VALUE USING TECHSTREAM (MISFIRE COUNT) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1 Misfire Count, #2, #3, #4, #5, #6, #7 and #8. Allow the engine to idle. Read each value for Cylinder #1 Misfire Count to #8 displayed on the Techstream. If no misfire counts occur in any cylinders, perform the following procedures: Move the shift lever to D. Check the Cylinder #1 Misfire Count to #8. If misfire counts are still not displayed, perform procedure "A" and "B" and then check the misfire counts again. Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedures above (Procedure "A"). Read the Cylinder #1 Misfire Count to #8 or DTCs displayed on the Techstream (Procedure "B"). 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 record of the ECT is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 17 A: Go to next step
7. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Refer to «REMOVAL»(ref-385180-S17313066872011021400000) . Measure the spark plug electrode gap. Standard gap 1.0 to 1.1 mm (0.0394 to 0.0433 in.) Check the electrode for carbon deposits. RECOMMENDED SPARK PLUG: Manufacturer Product DENSO SK20HR11 NOTE: If the electrode gap is larger than standard, replace the spark plug. Do not adjust the electrode gap. NG --> See step 31 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. Refer to «REMOVAL»(ref-385180-S17313066872011021400000) . 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 27 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 3»(ref-385174-S12709251892011021400000) . NG --> REPAIR ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
10. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50, #60, #70 AND/OR #80 VOLTAGE) Disconnect the C53 ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C53-86 (#10) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-109 (#20) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-85 (#30) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-108 (#40) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-84 (#50) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-107 (#60) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-83 (#70) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-106 (#80) - C53-43 (E01) Engine switch on (IG) 11 to 14 V NG --> See step 32 OK: Go to next step
11. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection [whether fuel volume is high or low, and whether injection pattern is poor]. Refer to «INSPECTION»(ref-385205-S21294571122011021400000) . NG --> See step 33 OK: Go to next step
12. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK No leakage from air induction system. NG --> See step 34 OK: Go to next step
13. CHECK VALVE TIMING See step 5 NG --> See step 35 OK: Go to next step
14. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-385210-S35705251302011021400000) . NG --> CHECK AND REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND FILTER OK: Go to next step
15. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 4 NG --> See step 36 OK: Go to next step
16. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-385180-S28966604612011021400000) . NG --> See step 37 OK --> See step 46
17. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(ref-385207-S27270430232011021400000) . OK No leakage from air induction system. NG --> See step 38 OK: Go to next step
18. CHECK VALVE TIMING See step 5 NG --> See step 39 OK: Go to next step
19. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(ref-385210-S35705251302011021400000) . NG --> CHECK AND REPLACE FUEL PUMP, PRESSURE REGULATOR, FUEL PIPE LINE AND FILTER OK: Go to next step
20. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 4 NG --> See step 40 OK: Go to next step
21. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter. Refer to «ON-VEHICLE INSPECTION - Step 1»(ref-385180-S28966604612011021400000) . NG --> See step 41 OK: Go to next step
22. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Refer to «REMOVAL»(ref-385180-S17313066872011021400000) . Measure the spark plug electrode gap. Standard gap 1.0 to 1.1 mm (0.0394 to 0.0433 in.) Check the electrode for carbon deposits. RECOMMENDED SPARK PLUG: Manufacturer Product DENSO SK20HR11 NOTE: If the electrode gap is larger than standard, replace the spark plug. Do not adjust the electrode gap. NG --> See step 42 OK: Go to next step
23. 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. Refer to «REMOVAL»(ref-385180-S17313066872011021400000) . 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 27 OK: Go to next step
24. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(ref-385174-S12709251892011021400000) . NG --> REPAIR ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
25. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50, #60, #70 AND/OR #80 VOLTAGE) Disconnect the C53 ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C53-86 (#10) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-109 (#20) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-85 (#30) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-108 (#40) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-84 (#50) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-107 (#60) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-83 (#70) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-106 (#80) - C53-43 (E01) Engine switch on (IG) 11 to 14 V NG --> See step 43 OK: Go to next step
26. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection [whether fuel volume is high or low, and whether injection pattern is poor]. Refer to «INSPECTION - Step 1»(ref-385205-S07443860352011021400000) . NG --> See step 44 OK --> See step 47
27. 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 28 OK --> See step 48
28. CHANGE TO NORMAL IGNITION COIL AND CHECK SPARK OF MISFIRING CYLINDER Change the ignition coil to an ignition coil 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 45 OK --> See step 49
29. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385195-S22583078532011021400000)
30. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(ref-385179-S06651788502011021400000)
31. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)
32. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-385202-S41117691072011021400000)
33. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-385205-S13608547102011021400000)
34. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-385209-S10769205742011021400000)
35. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-385174-S35598449532011021400000)
36. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-385180-S19738057722011021400000)
37. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
38. REPAIR OR REPLACE AIR INDUCTION SYSTEM. Refer to «REMOVAL»(ref-385209-S10769205742011021400000)
39. ADJUST VALVE TIMING. Refer to «INSTALLATION»(ref-385174-S35598449532011021400000)
40. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(ref-385180-S19738057722011021400000)
41. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(ref-385180-S06546023872011021400000)
42. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)
43. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(ref-385202-S41117691072011021400000)
44. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(ref-385205-S13608547102011021400000)
45. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
46. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
47. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
48. REPLACE SPARK PLUG. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)
49. REPLACE IGNITION COIL. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)

HINT

1. DTCs P0327 and P0328 are for the bank 1 sensor 1 knock sensor circuit.
2. DTCs P032C and P032D are for the bank 1 sensor 2 knock sensor circuit.
3. DTCs P0332 and P0333 are for the bank 2 sensor 1 knock sensor circuit.
4. DTCs P033C and P033D are for the bank 2 sensor 2 knock sensor circuit.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 319

Scheme 320

Scheme 321

1. INSPECT KNOCK SENSOR Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-94 (KNK1) - C53-93 (EKNK) 20°C (68°F) 120 to 280 kohms C53-117 (KNK2) - C53-116 (EKN2) 20°C (68°F) 120 to 280 kohms C53-96 (KNK3) - C53-95 (EKN3) 20°C (68°F) 120 to 280 kohms C53-119 (KNK4) - C53-118 (EKN4) 20°C (68°F) 120 to 280 kohms RESULT Result Proceed to NG A OK B B --> See step 3 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - KNOCK SENSOR) Disconnect the C53 ECM connector. Disconnect the U1, U2, U3 or U4 knock sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition U1-2 - C53-94 (KNK1) Always Below 1 ohms U1-1 - C53-93 (EKNK) Always Below 1 ohms U2-2 - C53-117 (KNK2) Always Below 1 ohms U2-1 - C53-116 (EKN2) Always Below 1 ohms U3-2 - C53-96 (KNK3) Always Below 1 ohms U3-1 - C53-95 (EKN3) Always Below 1 ohms U4-2 - C53-119 (KNK4) Always Below 1 ohms U4-1 - C53-118 (EKN4) Always Below 1 ohms U1-2 or C53-94 (KNK1) - Body ground Always 10 kohms or higher U1-1 or C53-93 (EKNK) - Body ground Always 10 kohms or higher U2-2 or C53-117 (KNK2) - Body ground Always 10 kohms or higher U2-1 or C53-116 (EKN2) - Body ground Always 10 kohms or higher U3-2 or C53-96 (KNK3) - Body ground Always 10 kohms or higher U3-1 or C53-95 (EKN3) - Body ground Always 10 kohms or higher U4-2 or C53-119 (KNK4) - Body ground Always 10 kohms or higher U4-1 or C53-118 (EKN4) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
3. INSPECT ECM Disconnect the U1, U2, U3 or U4 knock sensor connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition 1 - 2 Engine switch on (IG) 4.5 to 5.5 V NG --> See step 4 OK --> See step 6
4. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
5. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(ref-385180-S13212301242011021400000)
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)

HINT

1. If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical information.
2. The engine speed can be checked by using the Techstream. To check, follow the procedures below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / 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 less than the actual engine speed, if the CKP sensor output voltage is insufficient.
3. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 322

Scheme 323

Scheme 324

Scheme 325

1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. Standard Correct values are displayed. HINT: To check the engine speed change, display the graph on the Techstream. If the engine does not start, check the engine speed while cranking. If the engine speed indicated on the Techstream remains zero (0), there may be an open or short in the Crankshaft Position (CKP) sensor circuit. NG --> See step 2 OK --> See step 9
2. INSPECT CRANKSHAFT POSITION SENSOR (SENSOR POWER SOURCE) Disconnect the C1 crankshaft position sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C1-3 - Body ground Engine switch on (IG) 4.5 to 5.0 V NG --> See step 8 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the C1 crankshaft position sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation. OK Sensor is installed correctly. NG --> See step 10 OK: Go to next step
5. 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 --> See step 11 OK: Go to next step
6. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(ref-385180-S16472001252011021400000) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335, P0337, P0338 AND/OR P0339) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0335, P0337, P0338 and/or P0339 B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> END
8. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the C1 crankshaft position sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(ref-385195-S42681660092011021400000)
10. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-385180-S39304592962011021400000)
11. REPLACE CRANKSHAFT POSITION SENSOR PLATE. Refer to «REMOVAL»(ref-385174-S24490085552011021400000)
12. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)
13. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

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

Scheme 326

Scheme 327

Scheme 328

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the C20 or C21 VVT sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.0 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the C20 or C21 VVT sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C20-1 (VVL+) - C53-92 (VV1+) Always Below 1 ohms C20-2 (VVL-) - C53-91 (VV1-) Always Below 1 ohms C21-1 (VVR+) - C53-87 (VV2+) Always Below 1 ohms C21-2 (VVR-) - C53-88 (VV2-) Always Below 1 ohms C20-1 (VVL+) or C53-92 (VV1+) - Body ground Always 10 kohms or higher C20-2 (VVL-) or C53-91 (VV1-) - Body ground Always 10 kohms or higher C21-1 (VVR+) or C53-87 (VV2+) - Body ground Always 10 kohms or higher C21-2 (VVR-) or C53-88 (VV2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION (VVT SENSOR) Check the VVT sensor (for intake side) installation. OK Sensor is installed correctly. NG --> See step 7 OK: Go to next step
4. CHECK INTAKE CAMSHAFT (TEETH) Check the teeth of the camshaft. OK Teeth do not have any cracks or deformation. NG --> See step 8 OK: Go to next step
5. REPLACE VVT SENSOR (for Intake Side) Replace the VVT sensor (for Intake Side). Refer to «REMOVAL»(ref-385180-S11473386012011021400000) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0340, P0342, P0343, P0345, P0347 or P0348 B HINT: If the engine does not start, replace the ECM. B --> See step 9 A --> END
7. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-385180-S29319276002011021400000)
8. REPLACE INTAKE CAMSHAFT. Refer to «REMOVAL»(ref-385174-S02392549452011021400000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

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

Scheme 329

Scheme 330

1. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the C5, C6, C7, C8, C10, C11, C12 or C13 ignition coil connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C5-4 (GND) - Body ground Always Below 1 ohms C13-4 (GND) - Body ground Always Below 1 ohms C6-4 (GND) - Body ground Always Below 1 ohms C12-4 (GND) - Body ground Always Below 1 ohms C7-4 (GND) - Body ground Always Below 1 ohms C11-4 (GND) - Body ground Always Below 1 ohms C8-4 (GND) - Body ground Always Below 1 ohms C10-4 (GND) - Body ground Always Below 1 ohms Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C5-1 (+B) - C5-4 (GND) Engine switch on (IG) 11 to 14 V C13-1 (+B) - C13-4 (GND) Engine switch on (IG) 11 to 14 V C6-1 (+B) - C6-4 (GND) Engine switch on (IG) 11 to 14 V C12-1 (+B) - C12-4 (GND) Engine switch on (IG) 11 to 14 V C7-1 (+B) - C7-4 (GND) Engine switch on (IG) 11 to 14 V C11-1 (+B) - C11-4 (GND) Engine switch on (IG) 11 to 14 V C8-1 (+B) - C8-4 (GND) Engine switch on (IG) 11 to 14 V C10-1 (+B) - C10-4 (GND) Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the C5, C6, C7, C8, C10, C11, C12 or C13 ignition coil connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C5-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C13-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C6-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C12-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C7-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C11-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C8-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C10-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C5-3 (IGT1) - C53-40 (IGT1) Always Below 1 ohms C13-3 (IGT2) - C53-33 (IGT2) Always Below 1 ohms C6-3 (IGT3) - C53-37 (IGT3) Always Below 1 ohms C12-3 (IGT4) - C53-34 (IGT4) Always Below 1 ohms C7-3 (IGT5) - C53-35 (IGT5) Always Below 1 ohms C11-3 (IGT6) - C53-36 (IGT6) Always Below 1 ohms C8-3 (IGT7) - C53-38 (IGT7) Always Below 1 ohms C10-3 (IGT8) - C53-39 (IGT8) Always Below 1 ohms C5-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C13-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C6-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C12-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C7-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C11-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C8-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C10-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C5-3 (IGT1) or C53-40 (IGT1) - Body ground Always 10 kohms or higher C13-3 (IGT2) or C53-33 (IGT2) - Body ground Always 10 kohms or higher C6-3 (IGT3) or C53-37 (IGT3) - Body ground Always 10 kohms or higher C12-3 (IGT4) or C53-34 (IGT4) - Body ground Always 10 kohms or higher C7-3 (IGT5) or C53-35 (IGT5) - Body ground Always 10 kohms or higher C11-3 (IGT6) or C53-36 (IGT6) - Body ground Always 10 kohms or higher C8-3 (IGT7) or C53-38 (IGT7) - Body ground Always 10 kohms or higher C10-3 (IGT8) or C53-39 (IGT8) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357 OR P0358) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Shuffle the arrangement of the ignition coils (among No. 1 to No. 8 cylinders). NOTE: Do not shuffle the connectors. Perform a simulation test. Check DTCs displayed on the Techstream. RESULT Result Proceed to Same DTC is output A Different ignition coil DTC is output B B --> See step 4 A --> See step 5
4. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(ref-385180-S17313066872011021400000)
5. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

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

Scheme 331

Scheme 332

Scheme 333

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the C22 or C23 VVT sensor (for exhaust side) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.0 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR (for Exhaust Side) - ECM) Disconnect the C22 or C23 VVT (for exhaust side) sensor connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C22-1 (EX+) - C53-69 (EV1+) Always Below 1 ohms C22-2 (EX-) - C53-68 (EV1-) Always Below 1 ohms C23-1 (EX+) - C53-64 (EV2+) Always Below 1 ohms C23-2 (EX-) - C53-65 (EV2-) Always Below 1 ohms C22-1 (EX+) or C53-69 (EV1+) - Body ground Always 10 kohms or higher C22-2 (EX-) or C53-68 (EV1-) - Body ground Always 10 kohms or higher C23-1 (EX+) or C53-64 (EV2+) - Body ground Always 10 kohms or higher C23-2 (EX-) or C53-65 (EV2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION (VVT SENSOR) Check the VVT sensor (for exhaust side) installation. OK Sensor is installed correctly. NG --> See step 7 OK: Go to next step
4. CHECK EXHAUST CAMSHAFT Check the teeth of the camshaft. OK Teeth do not have any cracks or deformation. NG --> See step 8 OK: Go to next step
5. REPLACE VVT SENSOR (for Exhaust Side) Replace the VVT sensor (for exhaust side). Refer to «REMOVAL»(ref-385180-S11473386012011021400000) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(ref-385195-S41751571112011021400000) . Start the engine. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0365, P0367, P0368, P0390, P0392 or P0393 B HINT: If the engine does not start, replace the ECM. B --> See step 9 A --> END
7. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(ref-385180-S29319276002011021400000)
8. REPLACE EXHAUST CAMSHAFT. Refer to «REMOVAL»(ref-385174-S02392549452011021400000)
9. REPLACE ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000)

HINT

The diagnostic information output from Air Injection Control Driver (AID) can be confirmed by connecting an oscilloscope to the diagnostic information terminal of the AID. Reading the waveform while performing the AIR system intrusive operation provided in the System Check function allows the possible trouble areas to be narrowed down.

Note. This Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Air Injection Check operation finishes.

AID Diagnostic Signal Waveforms ECM Commands DTCs (ECM Output) Suspected Trouble Areas 100% Duty Ratio Any Secondary Air Injection (AIR) System operation P1613 P1614 Open in diagnostic signal circuit Air Injection Control Driver (AID) Open in AID BATT circuit Short between +B and diagnostic signal circuits 0% Duty Ratio AIR System: ON (Air pump ON, ASV ON) P1613 P1614 Open or short in air pump or Air Switching Valve (ASV) command signal circuit (ECM - AID) Short between diagnostic signal circuit and body ground AID ECM 0% Duty Ratio AIR System: OFF (Air pump OFF, ASV OFF) - Normal 20% Duty Ratio Air Pump: ON P0418 P0419 Short between air pump drive circuit and body ground Harness and connector (AID - Pump) Air pump AID ECM 20% Duty Ratio Air Pump: OFF P0418 P0419 Open in air pump drive circuit (AID - Pump) Harness and connector (AID - Pump) Air pump AID ECM 40% Duty Ratio ASV: ON P0412 P0415 Short between ASV drive circuit and body ground Harness and connector (AID - ASV) ASV AID ECM 40% Duty Ratio ASV: OFF P0412 P0415 Open in ASV drive circuit (AID-ASV) Harness and connector (AID - ASV) AID ASV ECM 80% Duty Ratio AIR System: OFF (Air pump OFF, ASV OFF) P1613 P1614 AID ECM 80% Duty Ratio AIR System: ON (Air pump ON, ASV ON) - Normal Other than above (other than 0, 20, 40, 80 and 100% duty) - P1613 P1614 AID Open in AID ground circuit

Scheme 334

HINT

1. By using the Techstream to perform the Air Injection Check operation in the System Check, the air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 335

Scheme 336

Scheme 337

1. INSPECT AIR SWITCHING VALVE ASSEMBLY Disconnect the C35 or C36 air switching valve (ASV) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-5 (+B) - C35-1 (GND) 20°C (68°F)* 4.5 to 5.5 ohms C36-5 (+BL) - C36-1 (GNDL) 20°C (68°F)* 4.5 to 5.5 ohms HINT: *: Make sure that the air switching valve is at ambient temperature before measuring the resistance. NG --> See step 4 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE - BODY GROUND) Disconnect the C35 or C36 ASV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-1 (GND) - Body ground Always Below 1 ohms C36-1 (GNDL) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE - AIR INJECTION CONTROL DRIVER) Disconnect the C35 or C36 ASV connector. Disconnect the C30 or C32 AID connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-5 (+B) - C30-6 (VV) Always Below 1 ohms C36-5 (+BL) - C32-6 (VV2) Always Below 1 ohms C35-5 (+B) or C30-6 (VV) - Body ground Always 1 kohms or higher C36-5 (+BL) or C32-6 (VV2) - Body ground Always 1 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
4. REPLACE AIR SWITCHING VALVE ASSEMBLY. Refer to «REMOVAL»(ref-385179-S25483102562011021400000)
5. REPLACE AIR INJECTION CONTROL DRIVER. Refer to «REMOVAL»(ref-385179-S08790593802011021400000)

HINT

Diagnostic information output by the AID can be confirmed by connecting an oscilloscope to the diagnostic information terminal of the AID. Reading the waveform while performing the AIR system intrusive operation provided in the System Check function allows the possible trouble areas to be narrowed down.

Note. This Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Air Injection Check operation finishes.

AID Diagnostic Signal Waveforms ECM Commands DTCs (ECM Output) Suspected Trouble Areas 100% Duty Ratio Any Secondary Air Injection (AIR) System operation P1613 P1614 Open in diagnostic signal circuit Air Injection Control Driver (AID) Open in AID BATT circuit Short between +B and diagnostic signal circuits 0% Duty Ratio AIR System: ON (Air pump ON, ASV ON) P1613 P1614 Open or short in air pump or Air Switching Valve (ASV) command signal circuit (ECM - AID) Short between diagnostic signal circuit and body ground AID ECM 0% Duty Ratio AIR System: OFF (Air pump OFF, ASV OFF) - Normal 20% Duty Ratio Air Pump: ON P0418 P0419 Short between air pump drive circuit and body ground Harness and connector (AID - Pump) Air pump AID ECM 20% Duty Ratio Air Pump: OFF P0418 P0419 Open in air pump drive circuit (AID - Pump) Harness and connector (AID - Pump) Air pump AID ECM 40% Duty Ratio ASV: ON P0412 P0415 Short between ASV drive circuit and body ground Harness and connector (AID - ASV) ASV AID ECM 40% Duty Ratio ASV: OFF P0412 P0415 Open in ASV drive circuit (AID-ASV) Harness and connector (AID - ASV) AID ASV ECM 80% Duty Ratio AIR System: OFF (Air pump OFF, ASV OFF) P1613 P1614 AID ECM 80% Duty Ratio AIR System: ON (Air pump ON, ASV ON) - Normal Other than above (other than 0, 20, 40, 80 and 100% duty) - P1613 P1614 AID Open in AID ground circuit

HINT

1. By using the Techstream to perform the Air Injection Check operation in the System Check, the air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 338

Scheme 339

Scheme 340

1. INSPECT AIR PUMP ASSEMBLY Disconnect the C33 or C34 air pump 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) 0.44 to 1 ohms NG --> See step 3 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (AIR PUMP - BODY GROUND) Disconnect the C33 or C34 air pump connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C33-1 - Body ground Always Below 1 ohms C34-1 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. REPLACE AIR PUMP ASSEMBLY. Refer to «REMOVAL»(ref-385179-S26165580022011021400000)
4. CHECK HARNESS AND CONNECTOR (AIR PUMP - AIR INJECTION CONTROL DRIVER) Disconnect the C33 or C34 air pump connector. Disconnect the C29 or C31 AID connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C33-2 - C29-2 (VP) Always Below 1 ohms C34-2 - C31-2 (VP2) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
5. REPLACE AIR INJECTION CONTROL DRIVER. Refer to «REMOVAL»(ref-385179-S08790593802011021400000)

CONDITIONING FOR SENSOR TESTING

HINT

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

Scheme 341

1. (a) Connect the Techstream to the DLC3.
2. (b) Start the engine and warm it up with all the accessories switched off until the engine coolant temperature stabilizes.
3. (c) Run the engine at an engine speed of between 2500 rpm and 3000 rpm for at least 3 minutes.
4. (d) While running the engine at 3000 rpm and 2000 rpm at 2 second intervals, check the waveforms of the A/F and HO2 sensors using the Techstream.

HINT

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

Scheme 342

HINT

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

DTC SUMMARY

HINT

The reference orifice is located inside the canister pump module.

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

Refer to the EVAP System. Refer to INSPECTION PROCEDURE .

HINT

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

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

Scheme 343

Scheme 344

Scheme 345

Scheme 346

1. CONFIRM DTC AND EVAP PRESSURE Connect the Techstream to the DLC3. Turn the engine switch on (IG) (do not start the engine). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Enter the following menus: Powertrain / Engine and ECT / Data List / Evaporative / Vapor Pressure Pump. Read the EVAP (Evaporative Emission) pressure displayed on the Techstream. RESULT Result Test Result Suspected Trouble Area Proceed to P0451 - Canister pressure sensor C P0452 Below 45 kPa-a (430 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor Short in ECM circuit A P0453 Higher than 120 kPa-a (900 mmHg-a) Wire harness/connector (ECM - Canister pressure sensor) Canister pressure sensor Open in ECM circuit B C --> See step 4 B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Turn the engine switch off. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Result Suspected Trouble Area Proceed to C53-121 (PPMP) - Body ground Always 10 ohms or less Wire harness/connector (ECM - Canister pressure sensor) Short in canister pressure sensor circuit A C53-121 (PPMP) - Body ground Always 10 kohms or higher Wire harness/connector (ECM - Canister pressure sensor) Short in ECM circuit B B --> See step 8 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the M1 canister pump module connector. Disconnect the C53 ECM connector. Measure the resistance according to the value(s) in the table below. RESULT Tester Connection Condition Result Suspected Trouble Area Proceed to C53-121 (PPMP) - Body ground Always 10 kohms or higher Short in canister pressure sensor circuit A C53-121 (PPMP) - Body ground Always 10 ohms or less Short in wire harness/connector (ECM - Canister pressure sensor) B B --> See step 7 A --> See step 6
4. GO TO EVAP SYSTEM. Refer to «EVAP System»(ref-385202-S29049681952011021400000)
5. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) Disconnect the M1 canister pump module connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition M1-2 (SGND) - Body ground Always 100 ohms or less Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition M1-4 (VCC) - Body ground Engine switch on (IG) 4.5 to 5.5 V M1-3 (VOUT) - Body ground Engine switch on (IG) 4.5 to 5.5 V RESULT Result Suspected Trouble Area Proceed to Voltage and resistance within standard ranges Open in canister pressure sensor circuit A Voltage and resistance outside standard ranges Open in wire harness/connector (ECM - Canister pressure sensor) B B --> See step 7 A: Go to next step
6. REPLACE CHARCOAL CANISTER ASSEMBLY Replace the canister assembly. Refer to «REMOVAL»(ref-385179-S36397510152011021400000) . NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose. NEXT --> See step 9
7. REPAIR OR REPLACE HARNESS OR CONNECTOR HINT: If the exhaust tailpipe has been removed, go to the next step before reinstalling it. NEXT --> See step 9
8. REPLACE ECM Replace the ECM. Refer to «REMOVAL»(ref-385180-S10778133792011021400000) . NEXT: Go to next step
9. CHECK WHETHER DTC OUTPUT RECURS (AFTER REPAIR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Wait for at least 60 seconds. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending. HINT: If no pending DTCs are output to the Techstream, the repair has been successfully completed. NEXT --> COMPLETED