Transcript
Engine Control
B–O B–W 5 AM2 IG2 6 ST2 4 B–W R B–W B–W
I7
I10 Ignition SW B R–W R–W
(M/T)
(A/T)
R
R
6 IM 1 IA2
E3
R 3 IA2 12 II2 (A/T)
15A AM2
(M/T)
(A/T)
R
R
E B J 2(A), J 3(B) Junction Connector (A/T) (A/T) B (M/T) G–R A2 Park/Neutral Position SW 6 (A/T) J 2(A) Junction Connector B B G A G A B
3 IM B–R
C8 Clutch Start SW
1 R–W R–W R–W B–W B–W B–W B–O
A A
A A
2 (M/T) B R 9 B–W B–W 10 IA5 P N
3 EA1 2 IA4
10 EA1
B–R
1 2 30A MAIN 15A EFI 2
1 EFI Relay
5
1
11 3 1 2 1 C/OPN Relay 5 1
1
1
3
2
B
B
1 1A
W–B
4 IG
19 ID
1 IG
B B
1
1
12 IC
5 IL
8 IK
II2
9 EA1
9
II1
F10 Fuel Pump
FL MAIN 2. 0L
4 M 5
B
Battery
I10
ED
58
2004 COROLLA (EWD533U)
W–B
B
BH
(M/T)
G–R
B–R
B
(M/T)
B–O B–W W–B B–W W–B B–W
B–O B–W
E2 B–W E3 W–B B–W
E2 E3 W–B B–W
E2 E3 W–B W–B 4 GND IGT 3 11 A IGT4 W EVP 12 A L–B I1 Idle Air Control Valve 1 V3 VSV (EVAP) 2 B B I10 B VISC 2 B I10 W B–W B–W 1 I5 Ignition Coil and Igniter No. 4 23 A IGF L–Y +B IGF 2 L–Y
1 I2 Ignition Coil and Igniter No. 1 R–W +B
4 I3 Ignition Coil and Igniter No. 2 GND
1 +B
4 GND I4 Ignition Coil and Igniter No. 3
1 +B
4 GND
IGT 3 R–L
IGF 2 L–Y
IGT 3
IGF 2
IGF 2 L–Y
IGT 3 GR 10 A IGT3
Y–G L–Y
R (A/T)
F A
F A
F A
F A
R–W
(A/T)
Y–G
R–L
L–Y
J 2(A), J 3(B) Junction Connector
H B
8 B W–B NSW
3 D BATT
8 A IGT1
9 A IGT2
E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module
STA 9 B
FC 10 D
E03 5 B
E01 7 A
E02 6 A
RSO 5 A
W–B
W–B
(M/T)
W–B
(A/T)
W–B
G–R
B
B
J 4(A), J 5(B) Junction Connector
C A
C A
B (A/T) B (M/T) W–B W–B G–R B B B B
W–B
B
B
EC
B–L 1 DUTY GND 3
GR
R
59
2004 COROLLA (EWD533U)
Engine Control
B–O B–W
B–O
From Power Source System (See Page 48)
8
II1 10A M–HTR/ DEF I–UP
B–W
8 IL I10 B–W I10 B–W I10
B–W
B–W
B–W
B–W
1 I6 Injector No. 1
1 I7 Injector No. 2
1 I8 Injector No. 3
1 I9 Injector No. 4
1
C2 Camshaft Timing Oil Control Valve (VVT)
2
2
2
2
2
1 A #10
2 A #20
3 A # 30
4 A # 40
15 A OCV+
14 A OCV–
B–Y
W
Y
B
Y
L
13 D ELS2
E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module
CCV 1 C
EC 28 B
PSW 29 B
VG 24 B
EVG 32 B
THA 20 A
W THW 19 A W 2 1 E2 Engine Coolant Temp. Sensor
W–B
L
L–W
17
II2 V2 VSV (Canister Closed Valve)
10
II2
L
Y–B
L–R
G
P1 Power Steering Oil Pressure SW
1
1
3 VG
2 E2G
4 THA
2
+B 1
E2 5 BR
W–B
B
B
M1 Mass Air Flow Meter
BR BR
B
I10 A J7 Junction Connector IG
B
I10
B
60
2004 COROLLA (EWD533U)
B–O
B–O
From Power Source System (See Page 48)
15A TAIL
15A STOP
A13 Airbag Sensor Assembly
7 IH G–W (USA) 3 (Canada) G–W 1 3 TAIL Relay G–W (USA) 3
14 IC
GSW2 23 S9 Stop Light SW
IDL 13
2
13 Light Control SW OFF Tail G–B Head C12 Combination SW 10 G (Canada) 2 3 (USA) G 5 3 (USA)
Y
13 3C
11 3C
1 G–W G–W G–W 7 II L–W
5 IC
1 IL 6 Y IJ
I4
G
12 D ELS
19 C STP
14 D F/PS
16 D IDLO
E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module E2 28 A BR BR PTNK 21 D L VC 18 A VTA 21 A TBP 4 D R
1 ID2 7 II2 BR BR
2 ID2 Y
LG
Y
8 ID2 V5 VSV (Vapor Pressure Sensor) B B R
1
2
B A
B A J 2(A), J 3(B) Junction Connector
1
3
T1 Throttle Position Sensor
L
V4 Vapor Pressure Sensor
1
F B
F B
J 2(A), J 3(B) Junction Connector
3 Y
D B Y
2
2 B
H A
H A
H A
6 ID2 BR BR BR B BR Y BR B
16
II2
BR
7 ID2
(w/ Cruise Control)
C14 Cruise Control ECU
R–W
61
2004 COROLLA (EWD533U)
62
B–O 7 D LG–B FAN NO. 2 Relay FAN 6 D * 1 : Shielded LG FAN NO. 1 Relay CF 1 4 B P HT1A 2 C ACMG Y–B M/G CLT Relay HT 33 C G–W A/C SW Defroster Mode Detection SW ACLD (* 1) 3 31 C 23 B B Y A/C SW Defroster Mode Detection SW A/CS OX1A OX 13 A Y Pressure SW PRS 1 D B +B 32 C B–L (* 1) 27 A B NE+ THR A/C Thermistor C3 Crankshaft Position Sensor 1 2 W 4 C P–B HT1B J 2(A), J 3(B) Junction Connector E A W (* 1) 18 21 B W II2 OX1B W (* 1) NE– 34 A E A A B W W 9 II2 (* 1) W C1 Camshaft Position Sensor 2 1 E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module 26 A B G22+ B–O (* 1) (* 1)
B
Engine Control
B
H5 Heated Oxygen Sensor (Bank 1 Sensor 1)
2
B
+B
I10
B
4
BR
E1
2 4B
B
6 II1
1 4B
3 4B
B
4 4B
B
2004 COROLLA (EWD533U)
(* 1)
H8 Heated Oxygen Sensor (Bank 1 Sensor 2)
1
2
B
HT
+B
3
4
BR
OX
E1
(* 1)
(* 1)
I11
BR
BR
BR
B–O
B–O
From Power Source System (See Page 48) D1 Data Link Connector 3
7. 5A OBD SIL 7 TC 13 WFSE 15 SG 5 CG 4 BAT 16 7 W–B P–B R–B R–B L–R BR P IJ
2 3B
3 4C
1
II1
BR 3 3B L–R 4 4C P–B P
(* 1)
(* 1)
18 D SIL
20 D TC
19 D WFSE
E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module
E1 7 B
KNK1 1 B
EKNK 2 B
SPD 17 C
TACH 5 D
THWO 14 C
W 11 D
W–B V–W Y–R BR W B B R–Y R–Y Y–R B V–W (*1) (*1) (*1) (*1) 2 K1 Knock Sensor A B J 4(A), J 5(B) Junction Connector A B A B A B 16 4B BR 1 21 4B A A A A A A A A A A W–B BR A EB IE J6 Junction Connector BR BR BR BR 8 II2 BR BR BR
63
2004 COROLLA (EWD533U)
64
R–Y B–O Y–R B Malfunction Indicator Lamp 33 32 B–O Speedometer 8 Y–R 19 B Tachometer 10 4 8 4C V–W V–W 9 4C 9 W–G I2 (w/ ABS) W–G R–W C9 Combination Meter W–G (w/o ABS) 16 3B 14 2 IG 20 3B 22 3B C B B A R–W (w/o ABS) J 4(A), J 5(B) Junction Connector R–W II2 (w/o ABS) R–W 10A GAUGE From Power Source System (See Page 48) C A
Engine Control
14 IA6
17
W–G
SP1
S1 Skid Control ECU with Actuator
2004 COROLLA (EWD533U)
(w/ ABS)
4
3
W–G
II2
(w/o ABS)
1
R–W
V1 Vehicle Speed Sensor (Combination Meter)
(w/o ABS)
2
BR
(w/o ABS)
C B
BR
EB
(w/o ABS)
J 2(A), J 3(B) Junction Connector
System Outline The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of engine control is given here. 1. Input Signals (1) Engine coolant temp. signal system The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which varies according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINAL THW of the engine control module. (2) Intake air temp. signal system The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a control signal to TERMINAL THA of the engine control module. (3) Power steering oil pressure signal system Power steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal to TERMINAL PSW of the engine control module. (4) RPM signal system Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor. Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is input into TERMINAL NE+. (5) Throttle signal system The throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINAL VTA of the engine control module. (6) Vehicle speed signal system The vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine control module via the comb. meter and the skid control ECU with actuator. (w/ ABS) The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input to TERMINAL SPD of the engine control module via the comb. meter. (w/o ABS) (7) NSW signal system (A/T) The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal to TERMINAL NSW of the engine control module. (8) A/C SW signal system The operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL A/CS of the engine control module. (9) Battery signal system Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on, voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module. (10) Intake air volume signal system Intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the engine control module. (11) STA signal system To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input as a control signal to TERMINAL STA of the engine control module. (12) Oxygen sensor signal system The oxygen density in the exhaust gases is detected and is input as a control signal into TERMINALS OX1A and OX1B of the engine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for warming the sensor. The heater is also controlled by the engine control module (HT1A and HT1B). (13) Engine knock signal system Engine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine control module. (14) Electrical load signal system When systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal is input to TERMINALS ELS and ELS2 as a control signal. (15) Vapor pressure signal system Vapor pressure is detected by the vapor pressure sensor and is input as a control signal to TERMINAL PTNK of the engine control module.
65
2004 COROLLA (EWD533U)
Engine Control
2. Control System ∗ SFI system The SFI system monitors the engine conditions through the signals, which are input from each sensor to the engine control module. Based on this data and the program memorized in the engine control module, the most appropriate fuel injection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module, operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the driving conditions, through the engine control module. ∗ ESA system The ESA system monitors the engine conditions using the signals, which are input to the engine control module from each sensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timing is decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This output controls the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for the driving conditions. ∗ IAC system The IAC system increases the RPM and provides idle stability for fast idle–up when the engine is cold, and when the idle speed has dropped due to electrical load and so on. The engine control module evaluates the signals from each sensor, and outputs current to TERMINAL RSO to control the idle air control valve. ∗ Knock control system Knock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of the knock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion to the driving condition. ∗ Evapoparge control system This system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuel injection volume. The signal at this time will be output from TERMINAL EVP of the engine control module to VSV (EVAP). 3. Diagnosis System With the diagnosis system, when there is a malfunctioning in the engine control module signal system,the malfunction system is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunction indicator lamp. 4. Fail–Safe System When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based on the signals from that system, the fail–safe system either controls the system by using the data (Standard values) recorded in the engine control module memory or else stops the engine.
66
2004 COROLLA (EWD533U)
Service Hints C/OPN Relay 5–3 : Closed with the starter running and the engine running EFI Relay 5–3 : Closed with the ignition SW at ON or ST position E2 Engine Coolant Temp. Sensor 1–2 : Approx. 15.04 kΩ (–20°C, –4°F) Approx. 5.74 kΩ ( 0°C, 32°F) Approx. 2.45 kΩ (20°C, 68°F) Approx. 0.318 kΩ (80°C, 176°F) E3 (A), E4 (B), E5 (C), E6 (D) Engine Control Module Voltage at engine control module wiring connectors +B–E1 : 9–14 volts (Ignition SW at ON position) VC–E1 : 4.5–5.5 volts (Ignition SW at ON position) VTA–E1 : 0.3–0.8 volts (Ignition SW on and throttle valve fully closed) : 3.2–4.9 volts (Ignition SW on and throttle valve fully open) EVG–E1 : 3.3–3.9 volts (Ignition SW at ON position) THA–E1 : 0.5–3.4 volts (Engine idling and intake air temp. 0–80°C, 32–176°F) THW–E1 : 0.2–1.0 volts (Engine idling and engine coolant temp. 60–120°C, 140–248°F) STA–E1 : 6–14 volts (Engine cranking) IGT1, IGT2, IGT3, IGT4–E1 : Pulse generation (Engine idling) IGF–E1 : Pulse generation (Engine idling) FC–E1 : 9–14 volts (Ignition SW on and engine stopping) 0–3 volts (Engine idling) W–E1 : 9–14 volts (Engine idling and warning light off) A/CS–E1 : 9–14 volts (Ignition SW on and A/C SW off) SPD–E1 : Pulse generation (Driving approx. 20 km/h) ELS–E1 : 7.5–14 volts (Ignition SW on and taillight on) ELS2–E1 : 7.5–14 volts (Ignition SW on and rear window defogger on) NSW–E1 : 0–3 volts (Engine cranking) #10, #20, #30, #40–E1 : Pulse generation (Engine idling) NE+ –NE– : Pulse generation (Engine idling) RSO–E1 : Pulse generation (Engine idling) G2+ –NE– : Pulse generation (Engine idling) TBP–E1 : 9.0–14.0 volts (Ignition SW on) PTNK–E1 : 3.0–3.6 volts (Ignition SW at ON position and remove fuel cap) OX1A, OX1B–E1 : Pulse generation (Maintain engine speed at 2500 rpm for two minutes after warming up.) HT1A, HT1B–E1 : 9.0–14.0 volts (Ignition SW at ON position) 0–3.0 volts (Engine idling) KNK1–E1 : Pulse generation (Engine idling) EVP–E1 : 9.0–14.0 volts (Ignition SW at ON position) TACH–E1 : Pulse generation (Engine idling)
67
2004 COROLLA (EWD533U)
Engine Control
: Parts Location
Code A2 A13 C1 C2 C3 C8 C9 C12 C14 D1 E2 E3 E4 E5 E6 A B C D 32 34 32 32 32 34 34 34 34 34 32 34 34 34 34 J2 J3 See Page Code F10 H5 H8 I1 I2 I3 I4 I5 I6 I7 I8 I9 I10 A B 36 32 35 33 33 33 33 33 33 33 33 33 35 35 35 See Page J4 J5 J6 J7 K1 M1 P1 S1 S9 T1 V1 V2 V3 V4 V5 Code A B 35 35 35 35 33 33 33 33 35 33 33 33 33 37 37 See Page
: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code IC ID IG IH II IJ IK IL IM 1A 3B 3C 4B 4C 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) 25 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code EA1 IA2 IA4 IA5 IA6 ID2 II1 II2 42 42 Instrument Panel Wire and Floor Wire (Left Kick Panel) Engine Wire and Instrument Panel Wire (Blower Unit RH) 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) 38 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
68
2004 COROLLA (EWD533U)
: Ground Points
Code EB EC ED IE IG BH 38 38 40 40 44 See Page Ground Points Location Left Side of the Cylinder Head Front Left Suspension Tower Behind the Combination Meter Right Kick Panel Under the Left Quarter Pillar
: Splice Points
Code E2 E3 I2 I4 38 42 See Page Wire Harness with Splice Points Engine Wire Instrument Panel Wire Code I7 I10 I11 42 42 See Page Wire Harness with Splice Points Instrument Panel Wire Engine Wire
69
2004 COROLLA (EWD533U)