1KR-FE Engine Control System

  • Published on
    08-Nov-2014

  • View
    581

  • Download
    53

Embed Size (px)

DESCRIPTION

service manual

Transcript

<p>SFI SYSTEM &gt; PARTS LOCATION</p> <p>1/4</p> <p>2/4</p> <p>3/4</p> <p>4/4</p> <p>SFI SYSTEM &gt; SYSTEM DIAGRAM</p> <p>SFI SYSTEM &gt; PROBLEM SYMPTOMS TABLE</p> <p>HINT:</p> <p>When a malfunction is not confirmed by a DTC check and the cause of the problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below. Inspect the fuse and relay before confirming the suspected areas as shown in the chart below.</p> <p>NOTICE: When removing the following parts, follow the precautions on the relevant pages.</p> <p>SFI SYSTEM Symptom Suspected area 1. Starter signal circuit (Cranking holding function circuit) 2. Battery Engine does not crank (Does not start) 3. Starter (for 0.8 kW type) 4. Starter (for 1.0 kW type) 5. ST relay 6. VC output circuit 7. Clutch start switch 8. ECM 1. ECM power source circuit No initial combustion (Does not start) Incomplete combustion Engine cranks normally but difficult to start 2. Fuel pump control circuit 3. VC output circuit 4. ECM 1. Fuel pump control circuit 1. Starter signal circuit (Cranking holding function circuit) 2. Fuel pump control circuit 3. Compression Difficult to start with cold engine Difficult to start with hot engine High engine idling speed 1. Starter signal circuit (Cranking holding function circuit) 2. Fuel pump control circuit 1. Starter signal circuit (Cranking holding function circuit) 2. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit) for manual air conditioning system See page</p> <p>2. A/C signal circuit (Compressor circuit) for automatic air conditioning system 3. ECM power source circuit 1. A/C signal circuit (Compressor circuit) for manual air conditioning system Low engine idling speed 2. A/C signal circuit (Compressor circuit) for automatic air conditioning system 3. Fuel pump control circuit Rough idling (Poor idling) Hunting (Poor idling) Hesitation/Poor acceleration (Poor drivability) Surging (Poor drivability) 1. Compression 2. Fuel pump control circuit 1. ECM power source circuit 2. Fuel pump control circuit 1. Fuel pump control circuit 1. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit) for manual air conditioning system 2. A/C signal circuit (Compressor circuit) for automatic air conditioning system 3. ECM</p> <p>Engine stalls soon after starting 1. Fuel pump control circuit Engine stalls during A/C operation</p> <p>SFI SYSTEM &gt; PROBLEM SYMPTOMS TABLE</p> <p>HINT:</p> <p>When a malfunction is not confirmed by a DTC check and the cause of the problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below. Inspect the fuse and relay before confirming the suspected areas as shown in the chart below.</p> <p>NOTICE: When removing the following parts, follow the precautions on the relevant pages.</p> <p>SFI SYSTEM Symptom Engine does not crank (Does not start) Suspected area 1. Starter signal circuit (Cranking holding function circuit) 2. Battery 3. Starter (for 0.8 kW type) 4. Starter (for 1.0 kW type) 5. Starter (for 0.9 kW type) 6. Starter (for 1.3 kW type) 7. ST relay See page</p> <p>8. VC output circuit 9. Clutch start switch (for M/T models) 10. Park/neutral position switch (for MMT models) 11. Stop light switch circuit (for MMT models) 12. Multi-mode manual transmission system 13. ECM 1. ECM power source circuit No initial combustion (Does not start) Incomplete combustion Engine cranks normally but difficult to start 2. Fuel pump control circuit 3. VC output circuit 4. ECM 1. Fuel pump control circuit 1. Starter signal circuit (Cranking holding function circuit) 2. Fuel pump control circuit 3. Compression Difficult to start with cold engine Difficult to start with hot engine 1. Starter signal circuit (Cranking holding function circuit) 2. Fuel pump control circuit 1. Starter signal circuit (Cranking holding function circuit) 2. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit) for manual air conditioning system High engine idling speed 2. A/C signal circuit (Compressor circuit) for automatic air conditioning system 3. ECM power source circuit 1. A/C signal circuit (Compressor circuit) for manual air conditioning system Low engine idling speed 2. A/C signal circuit (Compressor circuit) for automatic air conditioning system 3. Fuel pump control circuit Rough idling (Poor idling) Hunting (Poor idling) Hesitation/Poor acceleration 1. Compression 2. Fuel pump control circuit 1. ECM power source circuit 2. Fuel pump control circuit 1. Fuel pump control circuit</p> <p>(Poor drivability) Surging (Poor drivability) 1. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit) for manual air conditioning system 2. A/C signal circuit (Compressor circuit) for automatic air conditioning system 3. ECM Engine stalls soon after starting 1. Fuel pump control circuit Engine stalls during A/C operation</p> <p>SFI SYSTEM &gt; TERMINALS OF ECM</p> <p>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 STD Voltage column. The illustration above can be used as a reference to identify the ECM terminal locations.</p> <p>Symbols (Terminals No.)</p> <p>Wiring Colors</p> <p>Terminal Descriptions</p> <p>Conditions</p> <p>STD Voltages</p> <p>Battery (for BATT (A32V - W- measuring battery 22) - E1 B voltage and for ECM (A32-1) memory) IGSW (A32R - W4) - E1 (A32B 1) +B (A32-24) B - W- E1 (A32-1) B +B1 (A32B - WIgnition switch Power source of ECM Power source of</p> <p>Always</p> <p>9 to 14 V</p> <p>Ignition switch on (IG) Ignition switch on (IG) Ignition switch on</p> <p>9 to 14 V 9 to 14 V 9 to 14 V</p> <p>23) - E1 (A32-1)</p> <p>B</p> <p>ECM</p> <p>(IG) Ignition switch on (IG) Ignition switch on (IG)</p> <p>MREL (A32GR 6) - E1 (A32W-B 1)</p> <p>EFI relay</p> <p>9 to 14 V</p> <p>Power source of VC (C33-54) throttle position - ETA (C33- W - SB sensor (specific 39) voltage) Power source of VCPA (A32accelerator pedal 11) - EPA B-G position sensor (for (A32-9) VPA) Power source of VCP2 (A32accelerator pedal 19) - EPA2 W - BR position sensor (for (A32-17) VPA2) VC2 (C3340) - E21 (C33-35) VC2R (C3374) - E1 (A32-1) PIM (C3320) - E21 (C33-35) Power source of manifold absolute W-G pressure sensor (specific voltage) Power source of LG - camshaft position W-B sensor (specific voltage) GR - G Manifold absolute pressure sensor</p> <p>4.5 to 5.5 V</p> <p>Ignition switch on (IG)</p> <p>4.5 to 5.5 V</p> <p>Ignition switch on (IG)</p> <p>4.5 to 5.5 V</p> <p>Ignition switch on (IG)</p> <p>4.5 to 5.5 V</p> <p>Ignition switch on (IG)</p> <p>4.5 to 5.5 V</p> <p>Idling Ignition switch on (IG), Accelerator pedal fully released</p> <p>1.2 to 2.0 V</p> <p>VTA1 (C33Throttle position Y - SB sensor (for engine 21) - ETA (C33-39) control)</p> <p>0.2 to 1.0 V</p> <p>Ignition switch on VTA1 (C33Throttle position (IG), Accelerator 21) - ETA Y - SB sensor 1 (for engine pedal fully (C33-39) control) depressed VTA2 (C3337) - ETA (C33-39) VTA2 (C3337) - ETA (C33-39) Throttle position Ignition switch on GR sensor 2 (for engine (IG), Accelerator SB control) pedal fully released Ignition switch on Throttle position GR (IG), Accelerator sensor 2 (for engine SB pedal fully control) depressed</p> <p>4.2 to 4.6 V</p> <p>4.2 to 4.8 V</p> <p>0.2 to 1.0 V</p> <p>VPA (A3210) - EPA (A32-9) VPA (A3210) - EPA (A32-9)</p> <p>Accelerator pedal R - G position sensor (for engine control)</p> <p>Ignition switch on (IG), Accelerator pedal fully released</p> <p>0.7 to 1.2 V</p> <p>Ignition switch on Accelerator pedal (IG), Accelerator R - G position sensor 1 (for pedal fully engine control) depressed</p> <p>2.8 to 4.6 V</p> <p>VPA2 (A32Accelerator pedal Ignition switch on 18) - EPA2 L - BR position sensor 2 (for (IG), Accelerator (A32-17) engine control) pedal fully released Ignition switch on VPA2 (A32Accelerator pedal (IG), Accelerator 18) - EPA2 L - BR position sensor 2 (for pedal fully (A32-17) engine control) depressed THA (C3376) - E21 (C33-35) THW (C3356) - E2 (C33-36) #1 (C33-43) - E01 (A3220) #2 (C33-42) - E01 (A3220) #3 (C33-44) - E01 (A3220) IGT1 (C3312) - E1 (A32-1) IGT2 (C3310) - E1 (A32-1) IGT3 (C3311) - E1 (A32-1) P-G Intake air temperature sensor Idling, Intake air temperature 20C (68F) Idling, Engine coolant temperature 80C (176F)</p> <p>1.2 to 2.0 V</p> <p>3.6 to 4.0 V</p> <p>1.5 to 3.0 V</p> <p>Engine coolant L-P temperature sensor</p> <p>0.2 to 1.0 V</p> <p>SB W-B GR W-B P - WB</p> <p>Injector</p> <p>Ignition switch on (IG)</p> <p>9 to 14 V</p> <p>W - WB Ignition coil with O - Wigniter (ignition B signal) G - WB</p> <p>Idling</p> <p>Pulse generation (See waveform 1)</p> <p>G1 (C33-13) R - W- G- (C33B 32) NE+ (C3360) - NEL-P</p> <p>Camshaft position sensor Crankshaft position sensor</p> <p>Idling Idling</p> <p>Pulse generation (See waveform 2) Pulse generation (See waveform 2)</p> <p>(C33-81) STA (A3227) - E1 (A32-1) BR W-B Starter signal Cranking 5.5 V or more Push start type engine switch: Below 1 V 9 to 14 V momentary Mechanical type ignition switch: Below 1 V 9 to 14 V 9 to 14 V 9 to 14 V Below 1V 9 to 14 V</p> <p>STSW (A32B - W12) - E1 B (A32-1)</p> <p>Engine cranking required signal</p> <p>Ignition switch on (IG) Cranking</p> <p>STAR (C33O - W80) - E1 B (A32-1)</p> <p>Starter relay drive signal</p> <p>Cranking</p> <p>ACCR (C33G - W- Accessory power cut Ignition switch on 4) - E1 (A32B signal (IG) Cranking 1) FC (C33-63) V - W- E1 (A32-1) B OX1A (C3318) - E11 W-O (C33-17) Fuel pump control Ignition switch on (IG) Engine speed maintained at 2,500 rpm for 2 minutes after warming up sensor Engine speed maintained at 2,500 rpm for 2 minutes after warming up sensor Ignition switch on (IG) Ignition switch on (IG) Engine speed maintained at 4,000 rpm after warming up engine Ignition switch on (IG)</p> <p>Heated oxygen sensor (Sensor 1)</p> <p>Pulse generation (See waveform 3)</p> <p>OX1B (C3355) - E12 Y - BR (C33-34) HT1A (C33G - W41) - E1 B (A32-1) HT1B (C3362) - E1 (A32-1) KNK1 (C3378) - KNK2 (C33-57) LG W-B</p> <p>Heated oxygen sensor (Sensor 2)</p> <p>Pulse generation (See waveform 4)</p> <p>Heated oxygen sensor heater Heated oxygen sensor heater</p> <p>9 to 14 V</p> <p>9 to 14 V</p> <p>R-G</p> <p>Knock sensor</p> <p>Pulse generation (See waveform 5) Pulse generation (See waveform 6)</p> <p>OCV- (C33- R - W- Camshaft timing oil 61) - E1 B control valve</p> <p>(A32-1) EVP1 (C3322) - E1 (A32-1) STP (A3238) - E1 (A32-1) STP (A3238) - E1 (A32-1) ST1- (A3216) - E1 (A32-1) ST1- (A3216) - E1 (A32-1) L - WB G - WB G - WB Y - WB Y - WB EVAP VSV Ignition switch on (IG) Brake pedal depressed Brake pedal released Brake pedal depressed Brake pedal released Ignition switch on (IG) (MIL goes off) 9 to 14 V</p> <p>Stop light switch</p> <p>9 to 14 V</p> <p>Stop light switch</p> <p>Below 1.5 V</p> <p>Stop light switch</p> <p>Below 1.5 V</p> <p>Stop light switch MIL</p> <p>9 to 14 V Below 3.0 V Pulse generation (See waveform 7) Pulse generation (See waveform 8)</p> <p>W (A32-39) B - W- E1 (A32-1) B SPD (A3237) - E1 (A32-1) V - WB</p> <p>Vehicle speed of Speed signal from approximately 20 combination meter km/h (12 mph) Throttle actuator Idling with warm engine</p> <p>M+ (A32-2) G-R - M- (A32-3)</p> <p>FAN (C3323) - E1 (A32-1)</p> <p>O - WB</p> <p>FAN No .1 relay</p> <p>9 to 14 V: When radiator fan not operates Below 1 V: When radiator fan operates Ignition switch on Radiator fan (IG) operates according to engine coolant temperature and air conditioning operation 9 to 14 V: ECT 94.5C (202.1F) or less; Fan motor low Ignition switch on speed control (IG) Below 1 V: ECT 96C (204.8F) or more; Fan motor high speed control</p> <p>FAN2 (C33W - W5) - E1 (A32B 1)</p> <p>FAN No. 2 relay</p> <p>ELS (A3236) - E1 (A32-1) ELS2 (A3228) - E1 (A32-1) CANH (A32-25) E1 (A32-1)</p> <p>V - WRear defogger switch B G - WB Tail light switch</p> <p>Defogger ON</p> <p>9 to 14 V</p> <p>Tail light ON Ignition switch on (IG) Ignition switch on (IG) Idling Ignition switch on (IG) Ignition switch on (IG)</p> <p>9 to 14 V Pulse generation (See waveform 9) Pulse generation (See waveform 10) Pulse generation (See waveform 11) 9 to 14 V Pulse generation (See waveform 12) Pulse generation (See waveform 13)</p> <p>Communication L - Wsignal with other B components</p> <p>CANL (A32Communication W - W33) - E1 signal with other B (A32-1) components TACH (A3232) - E1 (A32-1) LG W-B Engine revolution signal</p> <p>TC (A32-7) - P - WMode switch signal E1 (A32-1) B * CAN+ (A32-34) CAN- (A3226) Communication signal with W-B transmission control ECU</p> <p>* NEO (C33L - WEngine speed signal Idling 64) - E1 B (A32-1) HINT: *: With Multi-mode Manual Transmission System</p> <p>WAVEFORM 1</p> <p>1. Igniter IGT signal (from ECM to igniter) ECM Terminal Between IGT1 (to</p> <p>Name Tester Range</p> <p>IGT3) and E1 2 V/DIV, 20 msec/DIV</p> <p>Condition Idling 2. HINT: 3. The wavelength becomes shorter as engine rpm increases.</p> <p>WAVEFORM 2</p> <p>1. Camshaft position sensor 2. Crankshaft position sensor (a) Between G1 and ECM Terminal GName (b) Between NE+ and NETester Range Condition 5 V/DIV, 20 msec/DIV Idling after engine warmed up</p> <p>3. HINT: 4. The wavelength becomes shorter as engine rpm increases.</p> <p>WAVEFORM 3</p> <p>1. HO2S (sensor 1) ECM Terminal Name Tester Range Condition</p> <p>Between OX1A and E11 0.2 V/DIV, 200 msec/DIV Engine RPM maintained at 2,500 rpm after engine warmed up</p> <p>2. HINT: 3. In the Data List, the item HO2S B1 S1 shows the ECM input values of the HO2S (sensor 1).</p> <p>WAVEFORM 4</p> <p>1. HO2S (sensor 2) ECM Terminal Between OX1B and E12</p> <p>Name Tester Range Condition 0.2 V/DIV, 200 msec/DIV Engine RPM maintained at 2,500 rpm after engine warmed up</p> <p>2. HINT: 3. In the Data List, the item HO2S B1 S2 shows the ECM input values of the HO2S (sensor 2).</p> <p>WAVEFORM 5</p> <p>1. Knock sensor ECM Terminal Name Tester Range Condition 2. HINT: </p> <p>Between KNK1 and KNK2 1 V/DIV, 1 msec/DIV Engine RPM maintained at 2,500 rpm after engine warmed up</p> <p>The wavelength becomes shorter as engine rpm increases. The waveforms and amplitudes displayed differ slightly depending on the vehicle.</p> <p>WAVEFORM 6</p> <p>1. VVT OCV ECM Terminal Name Tester Range Condition</p> <p>Between OCV- and E1 5 V/DIV, 1 msec/DIV Engine RPM maintained at 2,500 rpm after engine warmed up</p> <p>2. HINT: 3. In the Data List, the item VVT OCV DUTY shows the duty ratio of voltage applied to the OCV ().</p> <p>WAVEFORM 7</p> <p>1. Vehicle speed signal ECM Between SPD and E1</p> <p>Terminal Name Tester Range 5 V/DIV, 20 msec/DIV Condition Vehicle speed of approximately 20 km/h (12 mph)</p> <p>2. HINT: 3. The wavelength becomes shorter as the vehicle speed increases.</p> <p>WAVEFORM 8</p> <p>1. Throttle actuator ECM Terminal Between M+ and MName Tester Range Condition 20 V/DIV, 500 sec/DIV Idling after engine warmed up</p> <p>2. HINT: 3. The duty ratio varies depending on the throttle actuator operation.</p> <p>WAVEFORM 9</p> <p>1. Communication signal ECM Terminal Name Tester Range Condition Between CANH and E1 1 V/DIV, 10 msec/DIV Ignition switch on (IG)</p> <p>WAVEFORM 10</p> <p>1. Communication signal ECM Terminal Name Tester Range Condition Between CANL and E1 1 V/DIV, 10 msec/DIV Ignition switch on (IG)</p> <p>WAVEFORM 11</p> <p>1. Engine speed signal ECM Terminal Name Tester Range Between TACH and E1 5 V/DIV, 10 msec/DIV</p> <p>Condition Idling 2. HINT: 3. The w...</p>

Recommended

View more >