1NZ-FE engine control

ES–344 1NZ-FE ENGINE CONTROL SYSTEM – THROTTLE BODY THROTTLE BODYE1NNZG-IFNEEENGINECONTROLSYSTEM COMPONENTS MASS AIR FLOW METER CONNECTOR PURGE VSV CONNECTOR NO. 2 PURGE LINE HOSE ES AIR CLEANER ASSEMBLY 7.8 (80, 69 in.*lbf) 7.5 (76, 66 in.*lbf) A114195E01 N*m (kgf*cm, ft.*lbf) : Specified torque

1NZ-FE ENGINE CONTROL SYSTEM – THROTTLE BODY ES–345 THROTTLE POSITION SENSOR 2.0 (20, 18 in.*lbf) GASKET IAC VALVE ES NO. 2 WATER NO. 1 WATER BY-PASS HOSE BY-PASS HOSE 3.4 (35, 30 in.*lbf) GASKET THROTTLE POSITION THROTTLE BODY ASSEMBLY SENSOR CONNECTOR IAC VALVE CONNECTOR 30 (306, 22) 13 (133, 10) 30 (306, 22) ACCELERATOR CONTROL CABLE ASSEMBLY 5.5 (56, 49 in.*lbf) TRANSMISSION OIL HOSE ACCELERATOR CONTROL DIPSTICK SUB-ASSEMBLY CABLE BRACKET (for Automatic Transaxle) TRANSMISSION OIL FILLER TUBE SUB-ASSEMBLY (for Automatic Transaxle) N*m (kgf*cm, ft.*lbf) : Specified torque NO. 2 OIL COOLER TUBE CLAMP Non-reusable part O-RING 5.5 (56, 49 in.*lbf) A114196E01

1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–35 TERMINALS OF ECM E3 E4 E5 E6 ES A066714E01 HINT: The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations. Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition Battery (for measuring BATT (E6-3) - E1 (E3-3) B-Y - BR battery voltage and for Always 9 to 14 V ECM memory) IGSW (E6-9) - E1 (E3-3) B-R - BR Ignition switch Ignition switch ON 9 to 14 V FC (E6-25) - E1 (E3-3) G - BR Fuel pump control Ignition switch ON 9 to 14 V FC (E6-25) - E1 (E3-3) G - BR Fuel pump control Idling Below 1.5 V W (E5-30) - E1 (E3-3) Y-R - BR MIL Idling 9 to 14 V W (E5-30) - E1 (E3-3) Y-R - BR MIL Ignition switch ON Below 3.5 V +B (E6-1) - E1 (E3-3) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V +B2 (E6-2) - E1 (E3-3) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V MREL (E6-8) - E1 (E3-3) GR - BR EFI relay Ignition switch ON 9 to 14 V STP (E5-4) - E1 (E3-3) G-W - BR Ignition switch ON, Brake pedal Stop light switch depressed 9 to 14 V STP (E5-4) - E1 (E3-3) G-W - BR Ignition switch ON, Brake pedal Stop light switch released Below 1.5 V F/PS (E5-32) - E1 (E3-3) Y - BR STA (E6-12) - E1 (E3-3) B-Y - BR Airbag sensor Ignition switch ON Pulse generation PSP (E4-32) - E1 (E3-3) Y - BR (see waveform 1) Starter signal Cranking SPD (E5-8) - E1 (E3-3) V-W - BR Power steering oil 5.5 V or more pressure sensor Ignition switch ON TACH (E5-1) - E1 (E3-3) B - BR Speed signal from 9 to 14 V combination meter Driving at 20 km/h (12 mph) VC (E3-18) - E2 (E3-28) R-W - BR Pulse generation Engine speed Idling (see waveform 2) Pulse generation Power source of sensor Ignition switch ON (see waveform 3) (specific voltage) 4.5 to 5.5 V

ES–36 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition PRG (E4-23) - E01 (E3-7) W-G - BR Purge VSV 9 to 14 V Ignition switch ON and engine PRG (E4-23) - E01 (E3-7) W-G - BR stopping Pulse generation VG (E4-28) - E2G (E4-30) P-V (see waveform 4) Purge VSV Idling with warm engine OX1A (E3-21) - E2 (E3-28) W - BR 1.1 to 1.5 V Mass air flow meter Idling, A/C switch OFF Pulse generation HT1A (E3-1) - E03 (E4-4) B-R - BR Engine speed maintained at 2,500 (see waveform 5) Heated oxygen sensor rpm for 2 minutes after warming up HT1A (E3-1) - E03 (E4-4) B-R - BR (Sensor 1) sensor Below 3.0 V ES OX1B (E3-25) - E2 (E3-28) L - BR Heated oxygen sensor Idling 9 to 14 V heater (Sensor 1) HT1B (E3-2) - E03 (E4-4) W - BR Heated oxygen sensor Ignition switch ON Pulse generation heater (Sensor 1) (see waveform 6) HT1B (E3-2) - E03 (E4-4) W - BR Engine speed maintained at 2,500 Heated oxygen sensor rpm for 2 minutes after warming up Below 3.0 V THW (E3-32) - E2 (E3-28) R-L - BR (Sensor 2) sensor 9 to 14 V G2+ (E3-26) - NE- (E3-34) B-W Heated oxygen sensor Idling heater (Sensor 2) 0.2 to 1.0 V NE+ (E3-27) - NE- (E3-34) O-W Heated oxygen sensor Ignition switch ON Pulse generation heater (Sensor 2) (see waveform 7) THA (E4-29) - E2 (E3-28) Y-B - BR Engine coolant Idling, Engine coolant temperature Pulse generation temperature sensor 80°C (176°F) (see waveform 7) VTA1 (E3-20) - E2 (E3-28) Y-R - BR Camshaft position sensor Idling 0.5 to 3.4 V VTA1 (E3-20) - E2 (E3-28) Y-R - BR #10 (E4-6) - E01 (E3-7) B-O - BR Crankshaft position Idling 0.3 to 1.0 V #20 (E4-5) - E01 (E3-7) B-Y - BR sensor #30 (E4-2) - E01 (E3-7) B-W - BR Intake air temperature Idling, Intake air temperature 20°C 3.2 to 4.9 V #40 (E4-1) - E01 (E3-7) B-L - BR sensor (68°F) #10 (E4-6) - E01 (E3-7) B-O - BR 9 to 14 V #20 (E4-5) - E01 (E3-7) B-Y - BR Throttle position sensor Ignition switch ON, Throttle valve #30 (E4-2) - E01 (E3-7) B-W - BR fully closed Pulse generation #40 (E4-1) - E01 (E3-7) B-L - BR Throttle position sensor (see waveform 8) IGT1 (E3-17) - E1 (E3-3) G-R - BR Ignition switch ON, Throttle valve IGT2 (E3-16) - E1 (E3-3) G-B - BR fully open Pulse generation IGT3 (E3-15) - E1 (E3-3) G-O - BR (see waveform 9) IGT4 (E3-14) - E1 (E3-3) G-Y - BR Injector Ignition switch ON IGF1 (E3-23) - E1 (E3-3) 4.5 to 5.5 V Y - BR Injector Idling Pulse generation IGF1 (E3-23) - E1 (E3-3) (see waveform 9) RSD (E3-5) - E01 (E3-7) Y - BR Ignition coil (ignition Idling OC1+ (E3-13) - OC1- (E3-12) B-R - BR signal) 9 to 14 V R-Y - R-B Ignition switch ON Pulse generation KNK1 (E3-29) - EKNK (E3-30) Ignition coil (ignition (see waveform 10) TC (E5-17) - E1 (E3-3) W-B confirmation signal) Idling Pulse generation NSW (E6-30)* - E1 (E3-3) P-B - BR Ignition coil (ignition Ignition switch ON (see waveform 11) confirmation signal) Ignition switch ON NSW (E6-30)* - E1 (E3-3) B - BR Idle air control valve 9 to 14 V Camshaft timing oil Idling Below 1 V B - BR control valve Ignition switch ON Ignition switch ON and shift lever P 9 to 14 V Knock sensor or N position Ignition switch ON and shift lever Terminal TC of DLC3 except P or N position Park/Neutral position switch signal Park/Neutral position switch signal

1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–37 Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition VPMP (E6-5) - E1 (E3-3) P - BR Ignition switch ON 9 to 14 V MPMP (E6-6) - E1 (E3-3) V - BR Vent valve Leak detection pump OFF MPMP (E6-6) - E1 (E3-3) V - BR (built into canister pump Leak detection pump ON 0 to 3 V PPMP (E6-31) - E1 (E3-3) R - BR module) Ignition switch ON CANH (E5-33) - E1 (E3-3) B - BR 9 to 14 V CANL (E5-34) - E1 (E3-3) Leak detection pump (built into canister pump 3 to 3.6 V 5 V/DIV. module) GND Leak detection pump (built into canister pump module) Canister pressure sensor (built into canister pump module) CAN communication line Ignition switch ON Pulse generation ES (see waveform 12) W - BR CAN communication line Ignition switch ON Pulse generation (see waveform 13) *: A/T only 1. WAVEFORM 1 Airbag sensor assembly ECM Terminal Names Between F/PS and E1 Tester Ranges 5 V/DIV., 500 msec./DIV. Conditions Idling with warm engine 500 msec./DIV. A093227E04 5 V/DIV. 2. WAVEFORM 2 GND Vehicle speed signal 5 V/DIV. ECM Terminal Names Between SPD and E1 GND Tester Ranges 5 V/DIV., 20 msec./DIV. Conditions Driving at 25 mph (40 km/h) HINT: The wavelength becomes shorter as the vehicle speed increases. 20 msec./DIV. A093224E04 3. WAVEFORM 3 Engine speed signal ECM Terminal Names Between TACH and E1 Tester Ranges 5 V/DIV., 10 msec./DIV. Conditions Idling HINT: The wavelength becomes shorter as the engine rpm increases. 10 msec./DIV. A093225E01

ES–38 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM 10 V/DIV. 4. WAVEFORM 4 50 msec./DIV. Purge VSV ECM Terminal Names Between PRG and E01 Tester Ranges 10 V/DIV., 50 msec./DIV. Conditions Idling GND HINT: If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more. A116415E02 ES 0.2 V/DIV. 5. WAVEFORM 5 Heated Oxygen (HO2) sensor (sensor 1) ECM Terminal Names Between OX1A and E2 Tester Ranges 0.2 V/DIV., 200 msec./DIV. Conditions Engine maintained at 2,500 rpm when warmed up GND HINT: In the DATA LIST, item O2S B1S1 shows the ECM input 200 msec./DIV. values from the front HO2 sensor (sensor 1). A093282E17 0.2 V/DIV. 6. WAVEFORM 6 GND Heated Oxygen (HO2) sensor (sensor 2) ECM Terminal Names Between OX1B and E2 Tester Ranges 0.2 V/DIV., 200 msec./DIV. Conditions Engine maintained at 2,500 rpm when warmed up HINT: In the DATA LIST, item O2S B1S2 shows the ECM input values from the rear HO2 sensor (sensor 2). 200 msec./DIV. A088863E05 5 V/DIV. 7. WAVEFORM 7 (a) Camshaft position sensor and crankshaft position sensor (b) 20 msec./DIV. GND ECM Terminal Names (a) Between G2+ and NE- GND (b) Between NE+ and NE- 20 V/DIV. A063955E09 Tester Ranges 5 V/DIV., 20 msec./DIV. Conditions Idling HINT: The wavelength becomes shorter as the engine rpm increases. 8. WAVEFORM 8 Fuel injector ECM Terminal Names Between #10 (to 40) and E01 Tester Ranges 20 V/DIV., 20 msec./DIV. Conditions Idling GND HINT: The wavelength becomes shorter as the engine rpm increases. 20 msec./DIV. A093279E04

1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–39 2 V/DIV. 9. WAVEFORM 9 (a) Igniter IGT signal (from ECM to igniter) and igniter IGF signal (from igniter to ECM) GND (b) ECM Terminal Name (a) Between IGT (1 to 4) and E1 (b) Between IGF and E1 GND Tester Ranges 2 V/DIV., 20 msec./DIV. 5 V/DIV. Conditions Idling GND 20 msec./DIV. A093278E15 HINT: The wavelength becomes shorter as the engine rpm increases. 10. WAVEFORM 10 ES Camshaft timing oil control valve (OCV) ECM Terminal Names Between OC1+ and OC1- Tester Ranges 5 V/DIV., 200 msec./DIV. Conditions Idling 200 msec./DIV. HINT: A093229E09 The wavelength becomes shorter as the engine rpm increases. 11. WAVEFORM 11 Knock sensor 1 V/DIV. ECM Terminal Names Between KNK1 and EKNK GND Tester Ranges 0.01 to 10 V/DIV., 0.01 to 10 msec./DIV. Conditions Engine maintained at 4,000 rpm when warmed up 1 msec./DIV. A085286E15 HINT: • The wavelength becomes shorter as the engine rpm 1 V/DIV. increases. • The waveforms and amplitudes displayed differ slightly depending on the vehicle. 12. WAVEFORM 12 CAN communication signal ECM Terminal Names Between CANH and E1 Tester Ranges 1 V/DIV., 10 µsec./DIV. Conditions Engine stopped and ignition switch ON GND HINT: The waveform varies depending on the CAN communication signal. 10 μsec./DIV. A086154E07

ES–40 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES 1 V/DIV. 13. WAVEFORM 13 CAN communication signal ECM Terminal Names Between CANL and E1 Tester Ranges 1 V/DIV., 10 µsec./DIV. Conditions Engine stopped and ignition switch ON 10 μsec./DIV. GND HINT: The waveform varies depending on the CAN A086155E08 communication signal.

1NZ-FE ENGINE CONTROL SYSTEM – IDLE AIR CONTROL VALVE ES–349 IDLE AIR CONTROL VALVEE1NNZG-IFNEEENGINECONTROLSYSTEM COMPONENTS MASS AIR FLOW METER CONNECTOR PURGE VSV CONNECTOR NO. 2 PURGE LINE HOSE ES AIR CLEANER ASSEMBLY 7.8 (80, 69 in.*lbf) 7.5 (76, 66 in.*lbf) A114195E02 N*m (kgf*cm, ft.*lbf) : Specified torque

ES–350 1NZ-FE ENGINE CONTROL SYSTEM – IDLE AIR CONTROL VALVE ES GASKET GASKET IDLE AIR CONTROL VALVE THROTTLE BODY ASSEMBLY 3.4 (35, 30 in.*lbf) IDLE AIR CONTROL VALVE CONNECTOR NO. 2 WATER BY-PASS HOSE NO. 1 WATER BY-PASS HOSE 30 (306, 22) THROTTLE POSITION SENSOR CONNECTOR 13 (133, 10) 30 (306, 22) ACCELERATOR CONTROL CABLE ASSEMBLY 5.5 (51, 44 in.*lbf) HOSE ACCELERATOR CONTROL CABLE BRACKET TRANSMISSION OIL DIPSTICK SUB-ASSEMBLY TRANSMISSION OIL FILLER TUBE SUB-ASSEMBLY (for Automatic Transaxle) (for Automatic Transaxle) N*m (kgf*cm, ft.*lbf) : Specified torque NO. 2 OIL COOLER CLAMP Non-reusable part O-RING 5.5 (51, 44 in.*lbf) A114226E01

1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–41 DIAGNOSIS SYSTEM 1. DESCRIPTION When troubleshooting On-Board Diagnostics (OBD II) vehicles, the intelligent tester (complying with SAE J1987) must be connected to the Data Link Connector 3 (DLC3) of the vehicle. Various data in the vehicle's Engine Control Module (ECM) can then be read. OBD II regulations require that the vehicle's on-board computer illuminates the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in: (a)The emission control systems components ES (b)The power train control components (which affect vehicle emissions) (c) The computer itself In addition, the applicable Diagnostic Trouble Codes FI00534 (DTCs) prescribed by SAE J2012 are recorded in the ECM memory. If the malfunction does not reoccur in 3 consecutive trips, the MIL turns off automatically but the DTCs remain recorded in the ECM memory. To check the DTCs, connect the intelligent tester to the DLC3. The tester displays DTCs, freeze frame data, and a variety of engine data. The DTCs and freeze frame data can be erased with the tester. In order to enhance OBD function on vehicles and develop the Off-Board diagnosis system, the Controller Area Network (CAN) communication is used in this system. It minimizes the gap between technician skills and vehicle technology. CAN is a network which uses a pair of data transmission lines that span multiple ECUs and sensors. It allows high speed communication between the systems and DLC3 Intelligent Tester simplifies the wire harness connections. The CAN Vehicle Interface Module (CAN VIM) must be connected CAN VIM with the intelligent tester to display any information from the ECM. The intelligent tester and ECM uses CAN A119252E02 communication signals to communicate. Connect the CAN VIM between the intelligent tester and DLC3. 2. NORMAL MODE AND CHECK MODE The diagnosis system operates in normal mode during normal vehicle use. In normal mode, 2 trip detection logic is used to ensure accurate detection of malfunctions. Check mode is also available as an option for technicians. In check mode, 1 trip detection logic is used for simulating malfunction symptoms and increasing the system's ability to detect malfunctions, including intermittent problems (intelligent tester only). 3. 2 TRIP DETECTION LOGIC When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). If the same malfunction is detected during the next subsequent drive cycle, the MIL is illuminated (2nd trip).

ES–42 1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES DLC3 4. FREEZE FRAME DATA 㧝 㧞㧟㧠㧡㧢㧣㧤 Freeze frame data records the engine conditions (fuel system, calculated engine load, engine coolant temperature, fuel trim, engine speed, vehicle speed, etc.) 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. 5. DATA LINK CONNECTOR 3 (DLC3) The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. 9 10 1112 131415 16 A082779E98 Symbols Terminal No. Names Reference terminal Results Condition SIL 7 Bus \"+\" line 5 - Signal ground Pulse generation During transmission CG 4 Chassis ground Body ground SG 5 Signal ground Body ground 1 Ω or less Always BAT 16 Battery positive Body ground 1 Ω or less Always 6 CAN \"High\" line CANL 9 to 14 V Always CANH 6 CAN \"High\" line Battery positive 54 to 69 Ω Ignition switch OFF CANH 6 CAN \"High\" line CG 1 MΩ or higher Ignition switch OFF CANH 14 CAN \"Low\" line Battery positive 1 kΩ or higher Ignition switch OFF CANL 14 CAN \"Low\" line CG 1 MΩ or higher Ignition switch OFF CANL 1 kΩ or higher Ignition switch OFF If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of the intelligent tester to the DLC3, turn the ignition switch ON and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle. If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual. 6. BATTERY VOLTAGE Battery Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding.

1NZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–43 7. MIL (Malfunction Indicator Lamp) ES (a) The MIL is illuminated when the ignition switch is first turned ON (the engine is not running). (b) The MIL should turn OFF when the engine is started. If the MIL remains illuminated, the diagnosis system has detected a malfunction or abnormality in the system. HINT: If the MIL is not illuminated when the ignition switch is first turned ON, check the MIL circuit (see page ES-321 ). 8. ALL READINESS For the vehicle, using the intelligent tester allows readiness codes corresponding to all DTCs to be read. When diagnosis (normal or malfunctioning) has been completed, readiness codes are set. Enter the following menus on the intelligent tester: ENHANCED OBD II / MONITOR STATUS.

1NZ-FE ENGINE CONTROL SYSTEM – THROTTLE POSITION SENSOR ES–353 THROTTLE POSITION SENSOR1ENNZG-IFNEEENGINECONTROLSYSTEM COMPONENTS MASS AIR FLOW METER CONNECTOR PURGE VSV CONNECTOR NO. 2 PURGE LINE HOSE ES AIR CLEANER ASSEMBLY 7.8 (80, 69 in.*lbf) 7.5 (76, 66 in.*lbf) A114195E02 N*m (kgf*cm, ft.*lbf) : Specified torque

ES–354 1NZ-FE ENGINE CONTROL SYSTEM – THROTTLE POSITION SENSOR 2.0 (20, 18 in.*lbf) THROTTLE POSITION SENSOR ES NO. 2 WATER BY-PASS HOSE NO. 1 WATER BY-PASS HOSE GASKET THROTTLE BODY ASSEMBLY 30 (306, 22) THROTTLE POSITION SENSOR CONNECTOR IDLE AIR CONTROL 13 (133, 10) VALVE CONNECTOR 30 (306, 22) ACCELERATOR CONTROL CABLE ASSEMBLY 5.5 (56, 49 in.*lbf) HOSE ACCELERATOR CONTROL CABLE BRACKET TRANSMISSION OIL DIPSTICK SUB-ASSEMBLY (for Automatic Transaxle) TRANSMISSION OIL FILLER TUBE SUB-ASSEMBLY (for Automatic Transaxle) N*m (kgf*cm, ft.*lbf) : Specified torque O-RING NO. 2 OIL COOLER TUBE CLAMP Non-reusable part 5.5 (56, 49 in.*lbf) A114227E01

ES–358 1NZ-FE ENGINE CONTROL SYSTEM – KNOCK SENSOR KNK1 Signal Waveform HINT: When any of DTCs P0327 and P0328 are set, the ECM enters fail-safe mode. During fail-safe mode, the ignition timing is delayed to its maximum retardation. Fail-safe mode continues until the ignition switch is turned OFF. Reference: Inspection using an oscilloscope. The correct waveform is shown. GND Items Contents Terminals ES Equipment Settings KNK1 - EKNK Conditions 0.01 to 10 V/Division, 0.01 to 10 msec./ Division Keep engine speed at 4,000 rpm with warm engine A085286E13 INSTALLATION 1. INSTALL KNOCK SENSOR (a) Install the knock sensor with the nut. Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) (b) Connect the sensor connector. 2. INSTALL STARTER ASSEMBLY (See page ST-14) 3. INSTALL ENGINE UNDER COVER RH (See page ST- 14) A114218 4. INSTALL ENGINE UNDER COVER LH (See page ST- 14) 5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 6. PERFORM INITIALIZATION (a) Perform initialization (see page IN-23). NOTICE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

1NZ-FE ENGINE CONTROL SYSTEM – ECM ES–363 REMOVAL 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY (See page IP-6) 3. REMOVE ECM ES (a) Disconnect the 4 ECM connectors. (b) Remove the 2 bolts and ECM. (c) Remove the 2 screws and ECM bracket. (d) Remove the 2 screws and No. 2 ECM bracket. (e) Remove the 2 screws and No. 3 ECM bracket.

ES–364 1NZ-FE ENGINE CONTROL SYSTEM – ECM ES INSTALLATION 1. INSTALL ECM (a) Install the No. 3 ECM bracket with the 2 screws. (b) Install the No. 2 ECM bracket with the 2 screws. (c) Install the ECM bracket with the 2 screws. (d) Install the ECM with the 2 bolts. Torque: 3.0 N*m (31 kgf*cm, 27 in.*lbf) (e) Connect the 4 ECM connectors. 2. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY (See page IP-10) 3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 4. PERFORM INITIALIZATION (a) Perform initialization (see page IN-23). NOTICE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

ES–356 1NZ-FE ENGINE CONTROL SYSTEM – KNOCK SENSOR KNOCK SENSORE1NNZG-IFNEEENGINECONTROLSYSTEM COMPONENTS ES KNOCK SENSOR 20 (204, 15) KNOCK SENSOR CONNECTOR STARTER ASSEMBLY 37 (377, 27) 37 (377, 27) 5.0 (51, 44 in.*lbf) ENGINE UNDER COVER RH ENGINE UNDER COVER LH 5.0 (51, 44 in.*lbf) 5.0 (51, 44 in.*lbf) N*m (kgf*cm, ft.*lbf) : Specified torque A114219E01

1NZ-FE ENGINE CONTROL SYSTEM – KNOCK SENSOR ES–357 REMOVAL 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. REMOVE ENGINE UNDER COVER LH (See page ST- 8) 3. REMOVE ENGINE UNDER COVER RH (See page ST- 8) 4. REMOVE STARTER ASSEMBLY (See page ST-8) ES 5. REMOVE KNOCK SENSOR (a) Disconnect the sensor connector. (b) Remove the nut and sensor. A114218 INSPECTION 1. INSPECT KNOCK SENSOR (a) Measure the resistance of the sensor. Standard resistance: 120 to 280 kΩ at 20°C (68°F) If the result is not as specified, replace the knock sensor. DESCRIPTION A065174E05 A flat type knock sensor (non-resonant type) has a structure that can detect vibrations over a wide band of frequencies: between approximately 6 kHz and 15 kHz. Knock sensors are fitted onto the engine block to detect engine knocking. The knock sensor contains a piezoelectric element which generates a voltage when it becomes deformed. The voltage is generated when the engine block vibrates due to knocking. Any occurrence of engine knocking can be suppressed by delaying the ignition timing. DTC No. DTC Detection Condition Trouble Area P0327 Output voltage of knock sensor 0.5 V or less (1 trip detection logic) • Short in knock sensor circuit P0328 • Knock sensor Output voltage of knock sensor 4.5 V or more • ECM (1 trip detection logic) • Open in knock sensor circuit • Knock sensor • ECM

1NZ-FE ENGINE CONTROL SYSTEM – EFI RELAY ES–359 EFI RELAY ON-VEHICLE INSPECTION 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. REMOVE EFI RELAY (Marking: EFI) ES (a) Remove the engine room relay block cover. (b) Remove the EFI relay from the engine room relay block. 3. INSPECT EFI RELAY (a) Measure the resistance of the EFI relay. Standard resistance 3 51 2 Tester Connection Specified Condition 21 5 3-5 3 3-5 10 kΩ or higher B060778E14 Below 1 Ω (when battery voltage is applied to terminals 1 and 2) If the result is not as specified, replace the EFI relay. 4. INSTALL EFI RELAY 5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 6. PERFORM INITIALIZATION (a) Perform initialization (see page IN-23). NOTICE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

ES–360 1NZ-FE ENGINE CONTROL SYSTEM – CIRCUIT OPENING RELAY ES CIRCUIT OPENING RELAY 3 ON-VEHICLE INSPECTION 2 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. 2. REMOVE CIRCUIT OPENING RELAY (Marking: C/ OPN) (a) Remove the circuit opening relay from the instrument panel junction block. 3. INSPECT CIRCUIT OPENING RELAY (a) Measure the resistance of the circuit opening relay. Standard resistance 51 2 Tester Connection Specified Condition 1 5 3-5 3 3-5 10 kΩ or higher B060778E14 Below 1 Ω (when battery voltage is applied to terminals 1 and 2) If the result is not as specified, replace the circuit opening relay. 4. INSTALL CIRCUIT OPENING RELAY 5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 6. PERFORM INITIALIZATION (a) Perform initialization (see page IN-23). NOTICE: Certain systems needs to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

1NZ-FE ENGINE CONTROL SYSTEM – ECM ES–361 ECM1ENNZG-IFNEEENGINE CONTROL SYSTEM COMPONENTS ES 3.0 (30, 27 in.*lbf) ECM CONNECTOR ECM GLOVE COMPARTMENT DOOR ASSEMBLY N*m (kgf*cm, ft.*lbf) : Specified torque A114222E01

ES–362 1NZ-FE ENGINE CONTROL SYSTEM – ECM ON-VEHICLE INSPECTION 1. CHECK ECM (a) Check the ECM (see page ES-29). ES