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

2
INTRODUCTION
This manual consists of the following 11 sections:
No.
SectionDescription
A
INDEXIndex of the contents of this manual.
A
INTRODUCTIONBrief explanation of each section.
BHOW TO USE
THIS MANUALInstructions on how to use this manual.
CTROUBLE±
SHOOTINGDescribes the basic inspection procedures for electrical circuits.
DABBREVIATIONSDefines the abbreviations used in this manual.
E
GLOSSARY OF
TERMS AND
SYMBOLS
Defines the symbols and functions of major parts.
FRELAY LOCATIONSShows position of the Electronic Control Unit, Relays, Relay Block, etc.
This section is closely related to the system circuit.
GELECTRICAL
WIRING ROUTINGDescribes position of Parts Connectors, Splice points, Ground points, etc.
This section is closely related to the system circuit.
HPOWER SOURCE
(Current Flow Chart)Describes power distribution from the power supply to various electrical
loads.
INDEXIndex of the system circuits.
I
SYSTEM CIRCUITS
Electrical circuits of each system are shown from the power supply through
ground points. Wiring connections and their positions are shown and
classified by code according to the connection method. (Refer to the
section, ªHow to use this manualº).
The ªSystem Outlineº and ªService Hintsº useful for troubleshooting are
also contained in this section.
JGROUND POINTSShows ground positions of all parts described in this manual.
KOVERALL
WIRING DIAGRAMProvides circuit diagrams showing the circuit connections.

15
ABBREVIATIONS
ABBREVIATIONS
The following abbreviations are used in this manual.
ABS = Anti±Lock Brake System
ACIS = Acoustic Control Induction System
A/C = Air Conditioning
A/T = Automatic Transmission
COMB. = Combination
C/P = Coupe
ECU = Electronic Control Unit
EFI = Electronic Fuel Injection
EGR = Exhaust Gas Recirculation
ESA = Electronic Spark Advance
Ex. = Except
FL = Fusible Link
IAC = Idle Air Control
ISC = Idle Speed Control
J/B = Junction Block
LH = Left-Hand
MFI = Multiport Fuel Injection
M/T = Manual Transmission
O/D = Overdrive
R/B = Relay Block
RH = Right±Hand
RPM = Engine Speed
S/D = Sedan
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
VSV = Vacuum Switching Valve
W/G = Wagon
w/ = With
w/o = Without
*The titles given inside the components are the names of the terminals (terminal codes) and
are not treated as being abbreviations.

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)

52
POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to each electrical source (Fusible Link,
Circuit Breaker, Fuse, etc.) and other parts.
The next page and following pages show the parts to which each electrical source outputs current.
Starter Battery
FL MAIN 2.0L30A AM2Ignition SW
(AM2)
Headlight Relay
(Point Side)
40A DEFOG 100A ALTGenerator
(Alternator) 7.5A SRS
Taillight Relay
(Coil Side) 40A MAIN
(Canada) 7.5A OBD
7.5A ALT±S
10A HAZ
10A HORN
15A ECU±B
15A EFI
20A DOMEHeadlight Relay
(Coil Side)
60A ABS 15A STOP
40A HEATER
Taillight Relay
(Point Side)
Engine Main
Relay (Point Side)
15A TEL
Daytime Running
Light Relay No. 2
(Coil Side)
Daytime Running
Light Relay No. 2
(Point Side)Starter Relay
(Point Side)
(5S±FE)
30A POWER
40A AM1
Daytime Running
Light Relay (Main)
15A HEAD (UPR±LH)
15A HEAD (UPR±RH)
[LOCATION](1): J/B No. 1 (See page 20)(2): J/B No. 2 (See page 19)
(3): R/B No. 1 (See page 20)(7): R/B No. 7 (See page 19) 2022
25
27

54
POWER SOURCE (Current Flow Chart)
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 ABS
A/C Condenser Fan Motor (5S±FE)
242
A4 A5 A11 A1*Page Nos. of
Related Systems
Parts
Code or
Location
CB or Fuse
LocationA2 A3
* 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.


A12 A6 A7 A13 A17 A18A14 A16 A21 B1 B2 B3 B4 B5 B6 B7 B9 B10 214 252126
252210 210 246246
252126222
224152 236 166246
252246
252126
246
252160
166 220 220
A/C Triple Pressure SW (A/C Dual
and Single Pressure SW)
A/C Magnetic Clutch and Lock
Sensor
ABS Actuator and ECU
(TMM Made)
ABS Actuator (TMC Made)
ABS Actuator and ECU
(TMM Made)
ABS Relay
A/C Amplifier
A/C SW
ABS ECU (TMC Made)
Air Inlet Control Servo Motor
Air Vent Mode Control Servo Motor
Ashtray Illumination
Auto Antenna Motor and Relay
Back±Up Light SW (M/T)
Brake Fluid Level SW
Back Door Lock Control SW
Blower Motor
Blower Resistor
Blower SW
Buckle SW LH
Back Door Lock Motor (W/G)
Buckle SW RH
A10246
252 210 210 210 214 246
252 242
246
252
ABS ECU (TMC Made)A/C Evaporator Temp. Sensor ABS Relay
[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

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

58
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.


I5 I6 I7 I8 I9 I11 I12
I13I14 I16 I17 I18
I19 8068
72
80 130
134
138
140106
120
130
144
76
11 4
130
170
214
246
177
Injector No. 2
Injector No. 3
Injector No. 4
Injector No. 5 (1MZ±FE)
Injector No. 6 (1MZ±FE)
Injector Key Cylinder Light
Ignition SW and Unlock Warning
SW
Integration Relay
Interior Light
Ignition Coil No. 1 (1MZ±FE)
Ignition Coil No. 2 (1MZ±FE)
Ignition Coil No. 3 (1MZ±FE)
Ignition Coil No. 4 (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 ABS
Ignition Coil No. 5 (1MZ±FE)
Ignition Coil No. 6 (1MZ±FE)
Junction Connector
Junction Connector
Junction Connector
Junction Connector (for Airbag
System)
I20 I21 J1 J2 J3 J4 80 80 80 8011 2
126
140
17068
8068
8068
8068
8068
8068
80
90
11 8
134
192
224
252 98
120
138
210 80
154
182
190
204126
156
189
198
236130
156
182
214
226
234134
160
198
222
228
236154
168
204
224
230130
134
138
140130
134
138
140
[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

60
POWER SOURCE (Current Flow Chart)
*Page Nos. of
Related Systems
Parts
Code or
Location
CB or Fuse
Location
156
* 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.


P13 P14 P15 P16 R1 R2 R3 R5 R6 R7 R8 R9156 156126
222
224
228
234126
190154120
124
Power Window Motor Front LH
Power Window Motor Front RH
Power Window Motor Rear LH
(EX. C/P)
Radiator Fan Motor (5S±FE)
Radio and Player (w/ CD Player)
Radio and Player (w/o CD Player)
Rear Window Defogger SW
Remote Control mirror SW
Rheostat
Stop Light LH
[Rear Comb. Light LH]
Taillight LH
[Rear Comb. Light LH]
Rear Turn Signal Light LH
[Rear Comb. Light LH]
Stop Light LH
[Rear Comb. Light LH]
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 ABSR10 R11 R16 R17
Power Window Motor Rear RH
(EX. C/P)
Taillight LH
[Rear Comb. Light LH]
Back±up Light LH
[Rear Comb. Light LH]
Stop Light RH
[Rear Comb. Light RH]
Taillight RH
[Rear Comb. Light RH]
Rear Turn Signal Light RH
[Rear Comb. Light RH]
Taillight RH
[Rear Comb. Light RH]
Stop Light RH
[Rear Comb. Light RH]
Back±up Light RH
[Rear Comb. Light RH]
Rear Window Defogger (+)
(EX. W/G)
Rear Window Defogger (±)
(EX. W/G)
Rear Window Defogger (±)
(W/G)
156 242 126 126144
14811 4
148120
124144
148152120
124144
14811 4
11 8144
148120
124152 190 190 190
[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

61
186
R18 R19 R20 R21 S3 S8 S9 S10 V1 V2 V3 V468
72182226
23080
90
98
Rear Wiper Motor (W/G)
Rear Wiper Relay (W/G)
Remote Control Mirror LH
Remote Control Mirror RH
Shift Lock ECU
Stereo Component Amplifier
Stereo Component Amplifier
Stop Light SW
VSV (for A/C Idle±Up)
VSV (for EGR System) (1MZ±FE)
VSV (for Fuel Pressure Up)
VSV (for Intake Air Control)
(1MZ±FE)
Vehicle Speed Sensor
(Speed Sensor)
Vanity Light LH
Vanity Light RH
Washer Motor
Water Temp. Sender
Diode
Noise Filter
Defogger Relay (Coil Side)
Power Main Relay (Coil Side)
S5 V5 V8 V9 W1 W2
Starter (1MZ±FE)
Defogger Relay (Point Side)
Power Main Relay (Point Side)
Taillight Relay (Coil Side)
Taillight Relay (Point Side)
Starter Relay (Point Side)
Starter Relay (Coil Side)
EFI Main Relay (Coil Side)
EFI Main Relay (Point Side)
Headlight Relay (Coil Side)
186 154 154226
230120
192
204182
198
210
21480
9080
90
9880 80
98
198 90
192
236130
134
138130
134
138184
186236130
134
138190 190 190156
160
168156
160
16811 2
12612668
7268
72 80
90
98
198
204 80
90
98
198
204106
(4): R/B No. 4 (See page 20)(5): R/B No. 5 (See page 19)(6)R/B No. 6 (See Page )
2526 26