1986 TOYOTA SUPRA alternator

24
ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[2JZ±GTE]
A 1 A/C Ambient Temp. Sensor E 4 Engine Coolant Temp. Sender (Water Temp. Sender)
A 2 A/C Condenser Fan Motor E 5 Engine Coolant Temp. SW (Water Temp. SW)
A 3 A/C Triple Pressure SW E 6 Engine Hood Courtesy SW
(A/C Dual and Single Pressure SW) E 7 Engine Oil Level Sensor
A 4 A/C Magnetic Clutch and Lock Sensor
A 5 A/T Fluid Temp. Sensor F 1 Front Airbag Sensor LH
A 6 ABS Actuator F 2 Front Airbag Sensor RH
A 7 ABS Actuator F 3 Front Fog Light and Parking Light LH
A 10 ABS Speed Sensor Front LH F 4 Front Fog Light and Parking Light RH
A 11 ABS Speed Sensor Front RH F 5 Front Side Marker Light LH
F 6 Front Side Marker Light RH
B 1 Back±Up Light SW (for M/T) F 7 Front Turn Signal Light LH
B 2 Brake Fluid Level Warning SW F 8 Front Turn Signal Light RH
F 9 Front Wiper Motor
C 1 Camshaft Position Sensor No. 1
C 2 Camshaft Position Sensor No. 2 G 1 Generator (Alternator)
C 3 Crankshaft Position Sensor G 2 Generator (Alternator)
C 4 Cruise Control Actuator
H 1 Headlight Hi LH
D 1 Data Link Connector 1 (Check Connector) H 2 Headlight Hi RH
D 2 Daytime Running Light Relay No. 3 H 3 Headlight Lo LH
D 3 Daytime Running Light Relay No. 3 H 4 Headlight Lo RH
H 5 Heated Oxygen Sensor (Main)
E 1 EGR Gas Temp. Sensor H 8 Horn LH
E 2 Electronically Controlled Transmission Solenoid H 9 Horn RH
E 3 Engine Coolant Temp. Sensor (EFI Water Temp. Sensor)

26
ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[2JZ±GE]
A 1 A/C Ambient Temp. Sensor E 2 Electronically Controlled Transmission Solenoid
A 3 A/C Dual Pressure SW E 3 Engine Coolant Temp. Sensor (EFI Water Temp.
A 4 A/C Magnetic Clutch and Lock Sensor Sensor)
A 5 A/T Fluid Temp. Sensor E 4 Engine Coolant Temp. Sender (Water Temp.
A 6 ABS Actuator Sender)
A 7 ABS Actuator E 6 Engine Hood Courtesy SW
A 8 ABS Relay E 7 Engine Oil Level Sensor
A 9 ABS Relay
A 10 ABS Speed Sensor Front LH F 1 Front Airbag Sensor LH
A 11 ABS Speed Sensor Front RH F 2 Front Airbag Sensor RH
F 3 Front Fog Light and Parking Light LH
B 1 Back-Up Light SW (for M/T) F 4 Front Fog Light and Parking Light RH
B 2 Brake Fluid Level Warning SW F 5 Front Side Marker Light LH
F 6 Front Side Marker Light RH
C 4 Cruise Control Actuator F 7 Front Turn Signal Light LH
F 8 Front Turn Signal Light RH
D 1 Data Link Connector 1 (Check Connector) F 9 Front Wiper Motor
D 4 Distributor
G 1 Generator (Alternator)
E 1 EGR Gas Temp. Sensor G 2 Generator (Alternator)

44
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.
50A MAIN Battery
* 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.
20A RAD No. 1(2JZ±GTE)
30A EFI No. 2Generator
(Alternator) 7.5A DOME
7.5A ALT±S
15A HAZ±HORN
15A FOG
30A EFI No. 1
120A ALT
Starter
30A ABS No. 2
7.5A TRAC
(2JZ±GTE)
30A AM230A FAN
50A HTR
60A ABS No. 1
60A POWER
50A AM1 (For USA)
60A AM1 (For Canada)
Headlight Relay
Dimmer Relay (Daytime
Running Light Relay No. 2)
Ignition SW
(AM2)Taillight Relay
(Point Side)
30A DOOR
15A STOP
10A ECU±B
30A DEFOG
Ignition SW
(AM1)
15A HEAD (LH) (For USA)
15A HEAD (LH±LWR)
(For Canada)
15A HEAD (RH) (For USA)
15A HEAD (RH±LWR)
(For Canada)
7.5A DRL
15A HEAD (LH±UPR)
(For Canada)
15A HEAD (RH±UPR)
(For Canada)
7.5A IGN
(2JZ±GTE)
(2JZ±GE)
(Canada)
(Canada) (Canada)
[LOCATION](1): J/B No. 1 (See page 20)(2): R/B No. 2 (See page 19)(3): R/B No. 4 (See page 23) 20
22 23

49
F14 220
Fuel Pump and Sender
F15 G2 G3 G4 H1 H2 H3 H4 H5 H8 H9 H10 H11 H12 H14 I1 I18 I20 K3 L1 L2 L4 L5 M1 M2 M3 N2 70
8268 122 12294
9694
9694
9694
9670 129 129111
12270122
22811 470
8211 8 94
102 96
108
122184 102102
11 411 8 11 8 70
14082 82 208
Fuel Pump ECU
Generator (Alternator)
Glove Box Light
Glove Box Light SW
Headlight Hi LH
Headlight Hi RH
Headlight Lo LH
Headlight Lo RH
Heated Oxygen Sensor (Main)
Horn LH
Horn RH
Hazard SW
Heated Oxygen Sensor (Sub)
Heater Control SW
High Mounted Stop Light
Idle Air Control Valve
(ISC Valve)
Ignition Key Cylinder Light
Integration Relay
Key Interlock Solenoid
License Plate Light
Light Failure Sensor
Luggage Compartment
Light
Luggage Compartment
Light SW
Mass Air Flow
(Air Flow Meter)
Main Heated Oxygen Sensor
(for California, on Front Side)
Main Heated Oxygen Sensor
(for California, on Rear Side)
Noise Filter
(4): R/B No. 5 (See page 20)
23

56
POWER SOURCE
12
12
12
12
12
12
12
12
12 12
12
1212
12
12
127
25
4
8
3 AM2 AM1ACC
IG1
ST1
IG2
E7
2 2
2 2 2 2 2 2 2 22
2
2
2
2
2
2
2
2
2 2 2 2 IB14
2 4 2 3 4 21
3
5
1
1
3 W±R W±RW
W±R R
B
W±RW
W±L
P±L
B±Y
B±W
B±O
R
R
R±W R±Y
B
B
R±L W W
L±YY B±OB±Y G±RW WR L±Y
B
W
(
*
1)(
2JZ±
GTE) (
2JZ±
GTE)(
2JZ±
GTE)
(
USA) 120A ALT
20A RAD NO. 1
7. 5A DOME
7. 5A ALT±S
15A HAZ±HORN
30A AM260A POWER
60A ABS NO. 1
50A HTR
30A FAN
(
2JZ±GTE)
50A MAIN
15A FOG
30A EFI NO. 1
30A EFI NO. 2
(
2JZ±GTE)
30A ABS NO. 2
(
2JZ±GTE)
7. 5A TRAC
(
2JZ±GTE)
BATTERY
R±WTO DIMMER SW
[COMB. SW]
TO STARTER
FROM PARK/NEUTRAL
POSITION SW
(
NEUTRAL START SW)
(
FOR A/T)
CLUTCH START SW
(
FOR M/T)
TO DAYTIME
RUNNING LIGHT
RE LAY(
MAIN) TO GENERATOR
(
ALTERNATOR)
IGNITION SW I19
2A1
2B 1
HEADLIGHT
RELAY
STARTER RELAY
DIMMER RELAY
(
DAYTIME RUNNING
LIGHT RELAY NO. 2)
(
FOR CANADA)1J 41B 4 2
12 50A AM1(
FOR USA)
60A AM1(
FOR CANADA)
2 2W2
E7 E7
W
TO GENERATOR
(
ALTERNATOR) W
WW
(*
1)
(*
1)(*
1)
(*
1)(*
1) W
L±O
L±
O
TO THEFT
DETERRENT ECU

68
CHARGING*
1:2JZ±GTE
*2 : 2JZ±GE
123E 81E12
LIG S B
IC REGULATOR
BW
W
B±O Y±G
Y±G
Y
WY
W
BATTERY10A
GAUGE 7. 5A
IG N
GENERATOR
(
ALTERNATOR) AAA B 123 1 II1 34 II123
W
W
A G1 ,G2B FROM POW ER SOURCE SYSTEM(
SEE PAGE 56)
EA2 4
EA3 2(*
1)
(*
2)
W
22
7. 5A
ALT±S 22
11 120A
ALT
W
W
2A 1I14
Y±G Y±G
Y±G FR OM
COM B INA TIO N
METERCHARGE WARNING LIGHT
[TELLTALE LIGHT RH] T6
1

69
G 2(A) GENERATOR (ALTERNATOR)
(A) 3±GROUND:13.9±15.1 VOLTS WITH ENGINE RUNNING AT 2000 RPM AND 25°C (77°F)
13.5±14.3 VOLTS WITH ENGINE RUNNING AT 5000 RPM AND 11 5°C (239°F)
(A) 1±GROUND:0±4 VOLTS WITH IGNITION SW AT ON POSITION AND ENGINE NOT RUNNING
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
G1B24 (2JZ±GTE)G2A24 (2JZ±GTE)T 629G 1B26 (2JZ±GE)G 2A26 (2JZ±GE)
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
222R/B NO. 2 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
2A22BATTERY AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA232ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO 2)EA334ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO. 2)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I1438INSTRUMENT PANEL WIRE
1
123 B
G1ABLACK
12 X X X3T6 G2
SERVICE HINTS

96
HEADLIGHT (FOR CANADA)
1H 12 2
1 1
L
GENERATOR
(
ALTERNATOR)PARKING
BRAKE SW BA TTERYDAYTIME RUNNING
LIGHT RELAY(
MAIN) 10A
GAU GE7. 5A
DOME FROM POWER SOURCESYSTEM(
SEE PAGE 56)
D6
P5 G2
Y
Y±G B
Y±G
BR±W
11 8 2152
22
13
2
1 2450A MAINHEADLIGHT
RELAY
R
R±Y
W
R
R±Y
W
1
2B 1
IF2 7
Y±G
2A 1
II1 341B 5
1H 9
R R