engine coolant TOYOTA CAMRY 1994 XV10 / 4.G Wiring Diagrams Workshop Manual

28
ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[1MZ±FE]
A 2 A/C Triple Pressure SW (A/C Dual and Single Pressure F 1 Front Airbag Sensor LH
SW) F 2 Front Airbag Sensor RH
A 3 A/C Magnetic Clutch and Lock Sensor F 3 Front Clearance Light LH
A 4 ABS Actuator F 4 Front Clearance Light RH
A 5 ABS Actuator F 5 Front Side Marker LH
A 6 ABS Relay F 6 Front Side Marker RH
A 7 ABS Relay F 7 Front Turn Signal Light LH
A 8 ABS Speed Sensor Front LH F 8 Front Turn Signal Light RH
A 9 ABS Speed Sensor Front RH F 9 Front Wiper Motor
F 10 Fuse Box
B 2 Brake Fluid Level SW F 16 Fuse Box
F 18 Fuse Box
C 2 Cruise Control Actuator
C 17 Camshaft Position Sensor G 1 Generator (Alternator)
C 18 Crankshaft Position Sensor G 2 Generator (Alternator)
D 1 Data Link Connector 1 (Check Connector) H 1 Headlight Hi LH
D 2 Distributor H 2 Headlight Hi RH
H 3 Headlight Lo LH
E 1 EGR Gas Temp. Sensor H 4 Headlight Lo RH
E 2 Electronic Controlled Transmission Solenoid H 5 Horn LH
E 4 Engine Coolant Temp. Sensor (EFI Water Temp. H 6 Horn RH
Sensor) H 11 Heated Oxygen Sensor (Bank 1 Sensor 1)
E 5 Engine Coolant Temp. Sensor (Water Temp. Sensor) H 12 Heated Oxygen Sensor (Bank 2 Sensor 1)
(for Cooling Fan)

30
ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[5S±FE]
A 1 A/C Condenser Fan Motor E 1 EGR Gas Temp. Sensor
A 2 A/C Triple Pressure SW (A/C Dual and Single Pressure E 2 Electronic Controlled Transmission Solenoid
SW) E 3 Electronic Controlled Transmission Solenoid
A 3 A/C Magnetic Clutch and Lock Sensor E 4 Engine Coolant Temp. Sensor (EFI Water Temp.
A 4 ABS Actuator Sensor)
A 5 ABS Actuator E 5 Water Temp. SW (for Cooling Fan)
A 6 ABS Relay
A 7 ABS Relay F 1 Front Airbag Sensor LH
A 8 ABS Speed Sensor Front LH F 2 Front Airbag Sensor RH
A 9 ABS Speed Sensor Front RH F 3 Front Clearance Light LH
F 4 Front Clearance Light RH
B 1 Back±Up Light SW (M/T) F 5 Front Side Marker LH
B 2 Brake Fluid Level SW F 6 Front Side Marker RH
F 7 Front Turn Signal Light LH
C 2 Cruise Control Actuator F 8 Front Turn Signal Light RH
F 9 Front Wiper Motor
D 1 Data Link Connector 1 (Check Connector) F 10 Fuse Box
D 2 Distributor F 16 Fuse Box
F 17 Fuse Box
F 18 Fuse Box
G 1 Generator (Alternator)
G 2 Generator (Alternator)

56
POWER SOURCE (Current Flow Chart)
*Page Nos. of
Related Systems
Parts
Code or
Location
CB or Fuse
Location
* These are the page numbers of the first page on which the related system is shown.
The part indicated is located somewhere in the system, not necessarily on the page indicated here.


D25 E9E8 130
134
138
140130
138160 80 220126
198
20480
Door Courtesy SW Front LH
Door Key Cylinder Light and SW
Engine Control Module (Engine
and Electronic Controlled
Transmission ECU) (A/T) (1MZ±FE)
40A AM1
15A CIG/RADIO
40A DEFOG
15A ECU±1G
10A GAUGE
7.5A IGN
10A MIR±HTR
30A POWER
7.5A SRS
15A STOP
15A TAIL
7.5A TURN
20A WIPER
30A AM2
7.5A ALT±S
30A CDS FAN
20A DOME
15A ECU±B
15A EFI
10A HAZ
15A HEAD (LWR±LH)
15A HEAD (LWR±RH)
15A HEAD (UPR±LH)
15A HEAD (UPR±RH)
15A HEAD LH
15A HEAD RH
10A HORN
40A MAIN
7.5A OBD
10A STARTER
10A A/C
40A HEATER
7.5A DRL
100A ALT
60A ABSE7 E6 E5 E3 E2
D24 D23 D22 D21 D20 D19 D18
D17 D16 D15 D14 D13 D12130
138
140130
134
138
140130
134
138
140160 160 160 160 160 160198
220220 242 80
90
98
19880
Engine Control Module (Engine
and Electronic Controlled
Transmission ECU) (A/T) (5S±FE) Engine Control Module (Engine
and Electronic Controlled
Transmission ECU) Engine Controlled
Transmission Pattern
Select SW Engine Coolant Temp. Sensor
(Water Temp. Sensor) (for
Cooling Fan) (1MZ±FE) Electronic Controlled Transmission
Solenoid (5S±FE) Electronic Controlled Transmission
Solenoid Diode (for Tension Reducer) (C/P) Date Ling Connector 3 Door Lock Motor Rear RH
(EX. C/P) Door Lock Motor Rear LH
(EX. C/P) Door Courtesy SW Front RH
Door Courtesy SW Rear LH
Door Courtesy SW Rear RH
Door Key Lck and Unlock SW LH
(Ex. C/P)
Door Key Lck and Unlock SW RH
(Ex. C/P)
Door Lock Control SW RH
Door Lock Motor and Door Unlock
Detection SW Front LH
Door Lock Motor and Door Unlock
Detection SW Front RH
[LOCATION](1)
(7): J/B No. 1 (See page 20)
: R/B No. 7 (See page )(2)
(8): J/B No. 2 (See page 19)
: Fuse Box (F10, F17 See
on page )(3): R/B No. 1 (See page 23)
2022
25
27
28 29

78
ENGINE CONTROL (1MZ±FE)
THIS SYSTEM UTILIZES AN ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU) AND
MAINTAINS OVERALL CONTROL OF THE ENGINE, TRANSMISSION AND SO ON. AN OUTLINE OF THE ENGINE CONTROL IS
EXPLAINED HERE.
1. INPUT SIGNALS
(1) ENGINE COOLANT TEMP. (WATER TEMP.) SIGNAL CIRCUIT
THE ENGINE COOLANT TEMP. SENSOR (WATER TEMP. SENSOR) DETECTS THE ENGINE COOLANT TEMP. AND HAS A
BUILT±IN THERMISTOR WITH A RESISTANCE WHICH VARIES ACCORDING TO THE WATER TEMP. IS INPUT INTO TERMINAL
THW OF ENGINE CONTROL MODULE (ECU) AS A CONTROL SIGNAL.
(2) INTAKE AIR TEMP. SIGNAL CIRCUIT
THE INTAKE AIR TEMP. SENSOR IS INSTALLED IN THE MASS AIR FLOW (AIR FLOW METER) AND DETECTS THE INTAKE AIR
TEMP., WHICH IS INPUT AS A CONTROL SIGNAL TO TERMINAL THA OF ENGINE CONTROL MODULE (ECU).
(3) OXYGEN SENSOR SIGNAL SYSTEM
THE OXYGEN DENSITY IN THE EXHAUST GASES IS DETECTED AND INPUT AS A CONTROL SIGNAL TO TERMINAL OXL, OXR
AND OXS OF THE ENGINE CONTROL MODULE (ECU). 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 (ECU) (HTL, HTR AND HTS).
(4) RPM SIGNAL SYSTEM
CAMSHAFT POSITION AND CRANKSHAFT POSITION ARE DETECTED BY THE CAMSHAFT POSITION SENSOR AND
CRANKSHAFT POSITION SENSOR. CRANKSHAFT POSITION IS INPUT AS A CONTROL SIGNAL TO TERMINAL G22+ OF THE
ENGINE CONTROL MODULE (ECU), AND ENGINE RPM IS INPUT TO TERMINAL NE+.
(5) THROTTLE SIGNAL CIRCUIT
THE THROTTLE POSITION SENSOR DETECTS THE THROTTLE VALVE OPENING ANGLE AS A CONTROL SIGNAL, WHICH IS
INPUT INTO TERMINAL VTA OF THE ENGINE CONTROL MODULE (ECU). WHEN THE VALVE IS COMPLETELY CLOSED, THE
CONTROL SIGNAL IS INPUT INTO TERMINAL IDL.
(6) VEHICLE SPEED SIGNAL SYSTEM
THE VEHICLE SPEED SENSOR (SPEED SENSOR), INSTALLED INSIDE THE COMBINATION METER, DETECTS THE VEHICLE
SPEED AND INPUTS A CONTROL SIGNAL TO TERMINAL SP1 OF THE ENGINE CONTROL MODULE (ECU).
(7) PARK/NEUTRAL POSITION SW (NEUTRAL START SW) SIGNAL SYSTEM
THE PARK/NEUTRAL POSITION SW (NEUTRAL START SW) DETECTS WHETHER THE SHIFT POSITION IS IN NEUTRAL OR
PARKING OR NOT, AND INPUTS A CONTROL SIGNAL TO TERMINAL NSW OF THE ENGINE CONTROL MODULE (ECU).
(8) A/C SW SIGNAL SYSTEM
THE A/C AMPLIFIER INPUTS THE A/C OPERATIONS TO TEMRINAL A/C OF THE ENGINE CONTROL MODULE (ECU) AS A
CONTROL SIGNAL.
(9) BATTERY SIGNAL CIRCUIT
VOLTAGE IS CONSTANTLY APPLIED TO TERMINAL BATT OF THE ENGINE CONTROL MODULE (ECU). WHEN THE IGNITION SW
TURNED ON, VOLTAGE FOR ENGINE CONTROL MODULE (ECU) START±UP POWER SUPPLY IS APPLIED TO TERMINALS +B
AND +B1 OF ENGINE CONTROL MODULE (ECU) VIA EFI MAIN RELAY.
(10) INTAKE AIR VOLUME SIGNAL CIRCUIT
INTAKE AIR VOLUME IS DETECTED BY THE MASS AIR FLOW (AIR FLOW METER) AND THE SIGNAL IS INPUT TO TERMINAL VG
OF THE ENGINE CONTROL MODULE (ECU). AS A CONTROL SIGNAL.
(11) STA SIGNAL CIRCUIT
TO CONFIRM WHETHER THE ENGINE IS CRANKING, THE VOLTAGE APPLIED TO THE STARTER MOTOR DURING CRANKING IS
DETECTED AND THE SIGNAL IS INPUT INTO TERMINAL STA OF THE ENGINE CONTROL MODULE (ECU) AS A CONTROL
SIGNAL.
(12) ENGINE KNOCK SIGNAL CIRCUIT
ENGINE KNOCKING IS DETECTED BY THE KNOCK SENSOR NO. 1 AND NO. 2 AND THE SIGNALS ARE INPUT INTO TERMINALS
KNKR AND KNKL AS A CONTROL SIGNAL.
SYSTEM OUTLINE

82
ENGINE CONTROL (1MZ±FE)
A A
I18 I18 I18
ED 1 2
4 53 1
1 432 7VG±
B 21THA
B 22E2
B 7VTA
A 32IDL
C 14THG
B 20THW
D 20A/C
A 34E02
A 28E03 B±O
B±OL±B
BR
G±R
BR BR
BRR±B
L±B
B±Y
L±W
B±Y
W±B
W±BG±B BR G±Y BR1B 15KNKR
EE1 3EE11
WWBR
ENGINE COOLANT TEMP. SENSOR
(
EFI WATER TEMP. SENSOR) E4 EGR GAS
TE MP. SE NSOR
THROTTLE
POSITION
SENSOR T1
MASS AIR FLOW
(
AIR FLOW METER) M6
FROM
A/C AMPLIFIER
KNOCK SENSOR 1 K1
D 5ACT
LG±R
TO
A/C AMPLIFIER E1
1 2D
ENGINE CONTROL MODULE(
ENGINE A ND E LE CTRONIC
CONTROLLED TRANSMISSION ECU) E7 ,E8 ,E9 , E10BC
(
SHIELDED) (
SHIELDED)
I18
L±W
W±BBR
BR
D 26
OXSD 25
HTS IQ1 4IQ15
II1 9 II110 II18
B±O
BR P±BB
P±B B
4 2
31+B E
OX HT
H9
HEATED OXYGEN SENSOR
(
BANK1 SENSOR2)
L±B
I18
B±O
BR (
SHIELDED)
(
SHIELDED)
(
SHIELDED)
+B VG± THA
E2 B 18FC
B 1VC
2
VGB 8VG
BR
B±O
L±RR G±R
L
FROM COOLING
FA N ECU
A 33E01
W±B
B±OR±L R±L 4 2
31+B E
OX HT
H12
HEATED OXYGEN SENSOR
(
BANK2 SENSOR1)
4 2
31+B E
OX HT
H11
HEATED OXYGEN SENSOR
(
BANK1 SENSOR1)
I18 I18
C 10 B 19 B 13 C11B±OB
I18 I18
A 7 B 7 B 6 B 5 B 4 B 3 B 2 B 1B8 E14 E14 E13
E13 E13 E12
A 29 A 30 A 26 A 15 A 16 A 24 A 12A 1 A 2 A 3 A 4 A 5 A 6 A 8 2 1
2 1
2 1
2 1
2 1
2 1
IGNITION
COIL NO. 1 I16
IGNITION
COIL NO. 2 I17
IGNITION
COIL NO. 3 I18
IGNITION
COIL NO. 4 I19
IGNITION
COIL NO. 5 I20
IGNITION
COIL NO. 6 I21
+B COIL1 COIL2 COIL3 COIL4
COIL5COIL6
TA CHGND
IGF IGT1 IGT2 IGT3 IGT4 IGT5 IGT6 IGF IGT1 IGT2 IGT3 IGT4 IGT5 IGT6
C IGNITER I2 , I15B
W±R
W±G
Y±R
GR±B
L±B
R±B
G±RL±B
GR
WB±O B±O
B±O
B±O
B±O
B
W±B G
LG±B
PB±O
B±O
B±O B±O B±O B±O B±O B±O
(
SHIELDED) (
SHIELDED)
(
SHIELDED) W W
L±B
R±LL±B
R±L
V±R
W±B
B±OBR B±OBR B±O
B±O B±O
R±L
OXR HTR OXL HTLW±BB±O

84
ENGINE CONTROL (1MZ±FE)
CIRCUIT OPENING RELAY2±1 : CLOSED WITH STARTER RUNNING OR MEASURING PLATE (VOLUME AIR FLOW (AIR FLOW METER)) OPEN
EFI MAIN RELAY2±4 : CLOSED WITH IGNITION SW AT ON OR ST POSITION
E 4
ENGINE COOLANT TEMP. SENSOR (EFI WATER TEMP. SENSOR) 1±2 : 10.0 ± 20.0 K (±20°C, ±4°F)
: 4.0 ± 7.0 K (0°C, 32°F)
: 2.0 ± 3.0 K (20°C, 68°F)
: 0.9 ± 1.3 K (40°C, 104°F)
: 0.4 ± 0.7 K (60°C, 140°F)
: 0.2 ± 0.4 K (80°C, 176°F)
E 7(A), E 8(B), E 9(C), E10(D)
ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED
TRANSMISSION ECU)
VOLTAGE AT ENGINE CONTROL MODULE (ECU) WIRING CONNECTOR
BATT ± E1: ALWAYS 9.0±14.0 VOLTS
+B ± E1:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
+B1 ± E1:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
IDL ± E1:9.0±14.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY OPEN)
0±3.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED)
VC ± E1: ALWAYS 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)
VG ± E1:4.0±5.5 VOLTS (IGNITION SW AT ON POSITION)
THA ± E1:0.5±3.4 VOLTS (IGNITION SW ON AND INTAKE AIR TEMP. 20°C, 68°F)
THW ± E1:0.2±1.0 VOLTS (ENGINE IDLING AND COOLANT TEMP. 80°C, 176°F)
#10, #20, #30, #40, #50, #60
± E01:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
PULSE GENERATION (ENGINE IDLING)
IGT1, IGT2, IGT3
IGT4, IGT5, IGT6 ± E1: PULSE GENERATION (ENGINE IDLING)
IGF ± E1:4.5±5.5 VOLTS (IGNITION SW AT ON POSITION)
PULSE GENERATION (ENGINE IDLING)
G22+ ± G±: PULSE GENERATION (ENGINE IDLING)
NE+ ± G±: PULSE GENERATION (ENGINE IDLING)
RSC, RSO ± E1: PULSE GENERATION (ENGINE IDLING AND A/C OPERATION)
OXS, OXL, OXR ± E1: PULSE GENERATION (MAINTAIN ENGINE SPEED AT 2500 RPM FOR TWO MINUTES AFTER WARMING UP)
HTS, HTL, HTR ± E01:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
0±3.0 VOLTS (ENGINE IDLING)
KNKL, KNLR ± E1: PULSE GENERATION (ENGINE IDLING)
NSW ± E1:9.0±14.0 VOLTS (IGNITION SW ON AND OTHER SHIFT POSITION IN P OR N POSITION)
BELOW 3.0 VOLTS (IGNITION SW ON AND SHIFT POSITION IN P OR N POSITION)
SP1 ± E1: PULSE GENERATION (IGNITION SW ON AND ROTATE DRIVING WHEEL SLOWLY)
TE1 ± E1:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
TE2 ± E1:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
W ± E1: BELOW 3.0 VOLTS (MULFUNCTION INDICATOR LAMP ON)
9.0±14.0 VOLTS (MULFUNCTION INDICATOR LAMP OFF AND ENGINE RUNNING)
A/C ± E1: BELOW 1.5 VOLTS (ENGINE IDLING AND A/C SW ON)
7.5±14.0 VOLTS (A/C SW OFF)
ACT ± E1:9.0±14.0 VOLTS (ENGINE IDLING AND A/C SW ON)
BELOW 1.5 VOLTS (A/C SW OFF)
ACIS ± E01:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
STA ± E1:6.0 VOLTS OR MORE (ENGINE CRANKING)
I 4, I 5, I 6, I 7, I 8, I 9
INJECTOR1±2 : APPROX. 13.8 
T 1
THROTTLE POSITION SENSOR3±1 :0.2±5.7 KWITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0 MM (0 IN.)
2±1 : LESS THAN 2.3 KWITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.5 MM (0.020 IN.)
WITH CLEARANCE BETWEEN LEVER AND STOP SCREW 0.7 MM (0.0276 IN.)
3±1 :2.0±10.2 KWITH THROTTLE VALVE FULLY OPEN
SERVICE HINTS

88
ENGINE CONTROL (5S±FE)
THIS SYSTEM UTILIZES AN ENGINE CONTROL MODULE (ENGINE ECU (M/T), ENGINE AND ELECTRONIC CONTROLLED
TRANSMISSION ECU (A/T)) AND MAINTAINS OVERALL CONTROL OF THE ENGINE, TRANSMISSION AND SO ON. AN OUTLINE OF THE
ENGINE CONTROL IS EXPLAINED HERE.
1. INPUT SIGNALS
(1) ENGINE COOLANT TEMP. (WATER TEMP.) SIGNAL SYSTEM
THE ENGINE COOLANT TEMP. SENSOR (EFI WATER TEMP. SENSOR) DETECTS THE ENGINE COOLANT TEMP. AND HAS A
BUILT±IN THERMISTOR WITH A RESISTANCE WHICH VARIES ACCORDING TO THE ENGINE COOLANT TEMP. (WATER TEMP.)
THUS THE ENGINE COOLANT TEMP. (WATER TEMP.) IS INPUT IN THE FORM OF A CONTROL SIGNAL TO TERMINAL THW OF
THE ENGINE CONTROL MODULE (ECU).
(2) INTAKE AIR TEMP. SIGNAL SYSTEM
THE INTAKE AIR TEMP. SENSOR (IN±AIR TEMP. SENSOR) IS DETECTS THE INTAKE AIR TEMP., WHICH IS INPUT AS A
CONTROL SIGNAL TO TERMINAL THA OF THE ENGINE CONTROL MODULE (ECU).
(3) OXYGEN SENSOR SIGNAL SYSTEM
THE OXYGEN DENSITY IN THE EXHAUST GASES IS DETECTED AND INPUT AS A CONTROL SIGNAL TO TERMINAL OX1 AND
OX2 OF THE ENGINE CONTROL MODULE (ECU).
(4) RPM SIGNAL SYSTEM
CRANKSHAFT POSITION AND ENGINE RPM ARE DETECTED BY THE PICK±UP COIL INSTALLED INSIDE THE DISTRIBUTOR.
CRANKSHAFT POSITION IS INPUT AS A CONTROL SIGNAL TO TERMINALS G+ AND G2 (CALIFORNIA), OF THE ENGINE
CONTROL MODULE (ECU), AND RPM IS INPUT TO 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 (ECU), OR WHEN THE VALVE IS FULLY CLOSED, TO
TERMINAL IDL
(6) VEHICLE SPEED SIGNAL SYSTEM
THE VEHICLE SPEED SENSOR (SPEED SENSOR), INSTALLED INSIDE THE COMBINATION METER, DETECTS THE VEHICLE
SPEED AND INPUTS A CONTROL SIGNAL TO TERMINAL SPD OF THE ENGINE CONTROL MODULE (ECU).
(7) PARK/NEUTRAL POSITION SW (NEUTRAL START SW) SIGNAL SYSTEM (A/T)
THE PARK/NEUTRAL POSITION SW (NEUTRAL START SW) DETECTS WHETHER THE SHIFT POSITION ARE IN NEUTRAL AND
PARKING OR NOT, AND INPUTS A CONTROL SIGNAL TO TERMINAL NSW OF THE ENGINE CONTROL MODULE (ECU).
(8) A/C SW SIGNAL SYSTEM
THE A/C AMPLIFIER INPUTS THE A/C OPERATIONS TO TARMINAL ACA OF THE ENGINE CONTROL MODULE (ECU) AS A
CONTROL SIGNAL.
(9) BATTERY SIGNAL CIRCUIT
VOLTAGE IS CONSTANTLY APPLIED TO TERMINAL BATT OF THE ENGINE CONTROL MODULE (ECU). WHEN THE IGNITION SW
TURNED ON, THE VOLTAGE FOR ENGINE CONTROL MODULE (ECU) START±UP POWER SUPPLY IS APPLIED TO TERMINALS
+B AND +B1 OF ENGINE CONTROL MODULE (ECU) VIA EFI MAIN RELAY. THE CURRENT FLOWING THROUGH THE IGN FUSE
FLOWS TO TERMINAL IGSW OF THE ENGINE CONTROL MODULE (ECU).
(10) INTAKE AIR VOLUME SIGNAL SYSTEM
INTAKE AIR VOLUME IS DETECTED BY THE MANIFOLD ABSOLUTE PRESSURE SENSOR (VACUUM SENSOR) (FOR MANIFOLD
PRESSURE) AND IS INPUT AS A CONTROL SIGNAL TO TERMINAL PIM OF THE ENGINE CONTROL MODULE (ECU).
(11) STA SIGNAL CIRCUIT
TO CONFIRM WHETHER THE ENGINE IS CRANKING, THE VOLTAGE APPLIED TO THE STARTER MOTOR DURING CRANKING IS
DETECTED AND THE SIGNAL IS INPUT INTO TERMINAL STA OF THE ENGINE CONTROL MODULE (ECU) AS A CONTROL
SIGNAL.
(12) ENGINE KNOCK SIGNAL CIRCUIT
ENGINE KNOCKING IS DETECTED BY KNOCK SENSOR AND THE SIGNAL IS INPUT INTO TERMINAL KNK AS A CONTROL
SIGNAL.
(13) ELECTRICAL LOAD SIGNAL SYSTEM
THE SIGNAL WHEN SYSTEMS SUCH AS THE REAR WINDOW DEFOGGER, HEADLIGHTS, ETC. WHICH CAUSE A HIGH
ELECTRICAL BURDEN ARE ON IS INPUT TO TERMINAL ELS AS A CONTROL SIGNAL.
SYSTEM OUTLINE

91
*
2 : EX. CALIFORNIA
* 4 : FOR CANADA IN TMM MADE * 1 : CALIFORNIA
* 5 : EX. * 4
B C
I18B 11 B 1B12
R
B
L R
VC VTA IDL
THROTTLE POSITION
SENSOR T11 2
1 2
1 2 E20
E20
E18 E17 E17 1234
2 3
32 112
A 13 A2C 18 C 17 C 5 C 4
B 2 A
4B3B10 B16 B9 PIM THW THA THG E21 E2 NE NE±(
*2)
G± G+B B± O W±R W±R
B±O
B± O
BR BR BR
B±Y
BR BR
BR
BR
BR
BRGR L±BLGB±R G G
W± R W±R
R
L
B
Y
B±O
D6
I3
D2
E7 ,E8 , E10 +B1 ELSW± R
NE+ NE± G± G+(
*2)
VC E2PIM
(
*2)
M1
E4
I10
E1
MANIFOLD ABSOLUTE
PRESSURE SENSOR
(
VACUUM SENSOR)
ENGINE COOLANT TEMP. SENSOR
(
EFI WATER TEMP. SENSOR)
INTAKE AIR TEMP. SENSOR
(
IN±AIR TEMP. SENSOR)
EGR GAS TEMP.
SENSOR
ENGINE CONTROL MODULE(
ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU)(
A/T)
B
DIODE
(
FOR IDLE±UP)
IGNITION COIL
DISTRIBUTOR FROM
I18 E18
4321BR
BR I18
L
L FROM CRUISE
CONTROL ECU 1
P
E19
C 3C20 534
12
W± R
WBW±R
B
W±R
(
SHIELDED)
IGF IGT COIL± +B IG±
IGF IGTIGNITER I2
TO TACHOMETER
[COMB. METER]
C 8
FPU 1 2 B±O
(
*1)
B±O
(
*1) B±RV3
VSV
(
FOR PRESSURE UP)
1342G2(
*1)
(
*1)
(
*2)
NE G2 G± G1(
*1)
B E11 , E12CA,E14ENGINE CONTROL MODULE(
ENGINE ECU)(
M/T) ONE BODY ASSEMBLY
EX. CALIFORNIA
R
BRB±R
1D 1415A
TAIL
1A 1010A
MIR±HTR
3C 53D 5
POWER SOURCESYSTEM(
SEE PAGE 64)

94
ENGINE CONTROL (5S±FE A/T AND CALIFORNIA M/T)
E 7(C), E 8(B), E10(A) ENGINE CONTROL MODULE (ENGINE AND ELECTRONIC CONTROLLED TRANSMISSION ECU) (A/T)E11(C), E12(B), E14(A) ENGINE CONTROL MODULE (ENGINE ECU) (M/T)
VOLTAGE AT ENGINE CONTROL MODULE (ECU) WIRING CONNECTOR
BATT ± E1: ALWAYS 9.0±14.0 VOLTS
+B ± E1:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
+B1 ± E1:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION)
IDL ± E2:9.0±14.0 VOLTS (IGNITION SW ON AND THROTTLE VALVE OPEN)
VC ± E2:4.5± 5.5 VOLTS (IGNITION SW AT ON POSITION)
VTA ± E2:0.3± 0.8 VOLTS (IGNITION SW ON AND THROTTLE VALVE FULLY CLOSED)
:3.2± 4.9 VOLTS (IGNITION SW ON AND THROTTLE VALVE OPEN)
PIM ± E2:3.3± 3.9 VOLTS (IGNITION SW AT ON POSITION)
#10, #20 ± E01, E02:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION) (EX. CALIFORNIA)
#10, #20,
#30, #40 ± E01, E02:9.0±14.0 VOLTS (IGNITION SW AT ON POSITION) (CALIFORNIA)
THA ± E2:0.5± 3.4 VOLTS (IGNITION SW ON AND INTAKE AIR TEMP. 20°C, 68°F)
THW ± E2:0.2± 1.0 VOLTS (IGNITION SW ON AND COOLANT TEMP. 80°C, 176°F)
STA ± E1:6.0±14.0 VOLTS (ENGINE CRANKING)
IGT ± E1: PULSE GENERATION (ENGINE CRANKING OR IDLING)
W ± E1:9.0±14.0 VOLTS (NO TROUBLE AND ENGINE RUNNING)
ACT ± E1:9.0±14.0 VOLTS (IGNITION SW ON AND AIR CONDITIONING ON)
ACA ± E1:7.5±14.0 VOLTS (IGNITION SW ON AND AIR CONDITIONING ON)
TE1 ± E1:9.0±14.0 VOLTS (IGNITION SW ON)
NSW ± E1:0± 3.0 VOLTS (IGNITION SW ON AND PARK/NEUTRAL POSITION SW (NEUTRAL START SW)
POSITION P OR N POSITION)
9.0±14.0 VOLTS (IGNITION SW ON AND EX. PARK/NEUTRAL POSITION SW
(NEUTRAL START SW) POSITION P OR N POSITION)
RESISTANCE AT ENGINE CONTROL MODULE (ECU) WIRING CONNECTORS
(DISCONNECT WIRING CONNECTOR)
IDL ± E2: INFINITY (THROTTLE VALVE OPEN)
2.3 KW OR LESS (THROTTLE VALVE FULLY CLOSED)
VTA ± E2:3.3 ±10.0 KW (THROTTLE VALVE FULLY OPEN)
0.2 ± 0.8 KW (THROTTLE VALVE FULLY CLOSED)
VC ± E2:3.0 ±7 0 KW
THA ± E2:2.0 ±3.0 KW (INTAKE AIR TEMP. 20°C, 68°F)
THW ± E2:0.2 ±0.4 KW (COOLANT TEMP. 80°C, 176°F)
G1, NE ± G±:0.17±0.21 KW
ISCC, ISCO± +B, +B1:19.3±22.3 W
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A1032E11A32J 133
C 832E12C32K 131
C 9A32E14B32M 131
C10C32F15A34 (S/D), 35 (C/P), 36 (W/G)N 131
D 130I 131O 231
D 230I 231O 331
D 332I 331T 131
D 632I 431V 131
E 130I 531V 231
E 430I 631V 331
E 7C32I 731V 531
E 8B32I1031
E10A32I1233
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
125R/B NO. 1 (LEFT KICK PANEL)
626R/B NO. 6 (BEHIND GLOVE BOX)
SERVICE HINTS

99
AB
1 2
1 2
1 2 E20
E20
E18 E17 E171234
32 112
C 1A 5 A 18 A 17 A 4
B 2C
4B3B13 B9 B 16 IP116
PIM THW THA THG E2E21 NE NE± G± G+
(
SHIELDED) B B±O W±R W± R
B±O
B±O
R
BRBR BR BR BR
B±Y
BR
BR
BR
BR
BRGR L±BLGW±R W±R
R
L
B
Y
B±O
D6
I3
D2
E11 , E12 , E14 +B1W±R
NE+ NE± G± G+
VC E2PIM
M1
E4
I10
E1
MANIFOLD ABSOLUTE
PRESSURE SENSOR
(
VACUUM SENSOR)
ENGINE COOLANT
TEMP. SENSOR
(
EFI WATER TEMP.
SENSOR)
INTAKE AIR
TEM P. SE NSOR
(
IN±AIR TEMP.
SENSOR)
EGR GAS TEMP.
SENSOR
ENGINE CONTROL MODULE(
ENGINE ECU)
B
DIODE
(
FOR IDLE±UP)
IGNITION COIL
DISTRIBUTOR
I18 E18
BR
BRBR 2 3
C 12
B±R G G
ELS FRO E 64)
1
P
E19
A 3A22
W±R
WB±R
W±R
BB
B
W± R
B± R
12 534
COIL± +B
IG F IGT
IG F IGTIGNITER I2
TO
TACHOMETER
[COMB. METER]
W±R
(
*
2)B±O
B±O
NE+
1D 1415A
TAIL
1A 1010A
MIR±HTR
3C 53D 5
M POWER SOURCE SYSTEM(
SEE PAG