1986 TOYOTA SUPRA Service Repair Manual

130
THEFT DETERRENT AND DOOR LOCK CONTROL
7. 5A
ST
1
50A MAIN
1
60A POWER
1
120A ALT
52 31
13 24 1 2
2
2
1K 11 2 2 2IJ1 2
IB3 8IB2 6
IB2 13
IF2 15
IF2 16 IF210 IJ213 EA13
1 21K 4
IF2 11
1 2P
N5
6
2A
1J 11D10 1K 12 1E18IF2 9IF28
ID1 16 ID1 6 ID1 3 ID1 13
ID1 5 3 12I21
I3
B1
IETAIL HEAD SRLY
KSW IND UL3 L2 LSWD
M
3 14
232
LOCK PLCK 10
L±OR±YG±W
R±Y
L±O
BB±W B L±OB R±Y G±WW±L B
Y
W±L
G
G±Y
L±WB Y W±B
W±B W±B
W±B
W±B
L±RL±W
L±YW
G±Y
L±W
G±BL±W
L±Y
L±R
W±BG±BL±Y G±Y
L±W
W±B W±BG±YB
B
B±W
2 2 2
9
I20 P2
U1
INTEGRATION RELAY
DOOR LOCK MOTOR AND
DOOR UNLOCK DETECTION
SW LHDOOR KEY LOCK AND
UNLOCK SW LH
D15D12
UNLOCK
WARNING
SW
T5
THEFT DETERRENT INDICATOR LIGHT
[TELLTALE LIGHT LH]
PARK/NEUTRAL
POSITION SW
(
NEUTRAL START SW)
THEFT DETERRENT ECU(
A/T) (
M/T)
STARTER
RELAY HE ADLIGHT
RE LA YTA I LL I GHT
RE LA Y
(
*1)
(
*2)
(
A/T)
(
M/T)
(
M/T)
FROM POWER SOURCE SYSTEM(
SEE PAGE 56)
CLUTCH
START SW C9
G±Y
BATTERYUNLOCK
LOCK
I4
B
(
A/T)
32 51
1
B1 2 2
W
B 23 B10 B25
B 20 B12 B6B22 B15 B T7 ,T13
A B

131
*2 : 2JZ±GTE *
1:2JZ±GE
15A
HAZ±HORN
222 2
IB 2 16
IB6 19
IF2 14EA17
I2
IF26
I19 I21
ID1 7ID11IL19IL110 IL17IL12IL18IL112 I21I21
I21
B2 8 21
4 23
3 21 HORN SH
L1 UL1 UL12 LSWP ACT± ACT+ E
3 1
M 2
4
IH IL116 IL1 11
W±BL±RL±Y G±BW G±Y
W±B W±B W±B W±B
G±R R±W
G± R R±W G±Y
L±Y
G±BL±Y
G±B
W±L L±R L±R L±R L±RL±B
WW
W
W±L
W±L L±RW
FROM POWER SOURCE SYSTEM(
SEE PAGE 56)
1
2 312
D16D13 D14 P8
L±R L±R
W±B
W±B W±B W±B
W±BL±Y G±BW G±Y R±WG±R R±W
G±R G±RR±W DOOR LOCK
CONTROL SW LH
[POWER WINDOW
MASTER SW]
DOOR LOCK
CONTROL SW RH
DOOR KEY LOCK AND
UNLOCK SW RH
DOOR LOCK MOTOR AND
DOOR UNLOCK DETECTION
SW RHUNLOCK
LOCK
UNLOCK UNLOCKLOCK
LOCK
THEFT DETERRENT ECU
L±Y G±B
TO HORN SW
[COMB. SW]
(
*2)
(
*1) (
*2)
(
*1) HORN
RELAY
W±L
W±L(
*2)
(
*1) (
*2)
L±R
THEFT DETERRENT
HORN T1
2 1
B2W±BI21
L±R
L±R II1 22
B 24 B11
B 5B8B16 B21 A2A3A4 B T7 ,T13A

132
THEFT DETERRENT AND DOOR LOCK CONTROL
10A
ECU±IG15A
CIG7. 5A
DOME
1E 17 1E22
1E 111B 5
IF2 3IF39
IE1 8 IE1 4 IF3 4 IC2 15 IB64
BI IG EA BJ 2 3
2 3
2 1
2 11DSWL LUG DSW H DS WP DSWD+B1 ACC IGFROM POWER SOURCE SYSTEM(
SEE PAGE 56)
R RB±R
L±R
LGLV±R R±LR±B
V±R R±B
LGL V±RR±L R±B W±B
W±B
W±B
W±B
1
2
THEFT DETERRENT ECU T7
L5 L3 E6 D11 D10
LUGGAGE
COMPARTMENT
LIGHT SW LUGGAGE
COMPARTMENT
KEYUNLOCKSW ENGINE HOOD
COURTESY SW DOOR COURTESY
SW RH DOOR COURTESY
SW LH30A
DOOR
IH 15
A 7A8B1A9IF1 13
A 6
IF3 12
IE1I 7
1J 11D9 B 4 B 9 B 14 B 19 B 7PRLY +B 2
1J 2
Y Y W±B
L
LL±W L±W
POWER MAIN
RE LA Y

133
CURRENT ALWAYS FLOWS TO TERMINAL (A)9 OF THE THEFT DETERRENT ECU THROUGH THE DOOR FUSE, AND TO TERMINAL
(B)1 THROUGH THE DOME FUSE.
WHEN THE IGNITION SW TURNED ON, THE CURRENT FLOWING THROUGH THE ECU±IG FUSE " TERMINAL (A)7 OF THE ECU "
TERMINAL (A)6 FLOWS THROUGH THE COIL SIDE OF THE POWER MAIN RELAY TO GROUND, CAUSING THE RELAY TO OPERATE.
THE CURRENT FLOWING THROUGH THE DOOR FUSE FLOWS TO THE DOOR LOCK CONTROL SWITCHES, CAUSING THE INDICATOR
LIGHT TO LIGHT UP.
1. MANUAL LOCK OPERATION
WHEN THE DOOR CONTROL SW OR KEY SW ARE PUSHED TO LOCK POSITION, A LOCK SIGNAL IS INPUT TO TERMINAL (B)5, (B)22
(FOR KEY SW) OF THE THEFT DETERRENT ECU AND CAUSES THE ECU TO FUNCTION. CURRENT FLOWS FROM TERMINAL (A)9 OF
THE ECU " TERMINAL (A)3 " TERMINAL 2 (LH), TERMINAL 4 (RH) OF THE DOOR LOCK MOTORS " TERMINAL 4 (LH), TERMINAL 2
(RH) " TERMINAL (A)2 OF THE ECU " TERMINAL (A)4 " GROUND AND THE DOOR LOCK MOTOR CAUSES THE DOOR TO LOCK.
2. MANUAL UNLOCK OPERATION
WHEN THE DOOR LOCK CONTROL SW OR KEY SW ARE PUSHED TO UNLOCK POSITION, AN UNLOCK SIGNAL IS INPUT TO
TERMINAL (A)8, (B)6 (FOR KEY SW LH) OR (B)16 (FOR KEY SW RH) OF THE THEFT DETERRENT ECU AND CAUSES TO FUNCTION.
CURRENT FLOWS FROM TERMINAL (A)9 OF THE ECU " TERMINAL (A)2 " TERMINAL 4 (LH), TERMINAL 2 (RH) OF THE DOOR LOCK
MOTORS " TERMINAL 2 (LH), TERMINAL 4 (RH) " TERMINAL (A)3 OF THE ECU " TERMINAL (A)4 " GROUND AND THE DOOR
LOCK MOTOR CAUSES THE DOOR TO UNLOCK.
WHEN UNLOCK OPERATION OCCURS USING THE LH DOOR KEY SW, DOING THE UNLOCK OPERATION ONCE UNLOCKS ONLY THE
DRIVER'S DOOR. TO UNLOCK ALL THE OTHER DOORS TOGETHER, UNLOCK OPERATION MUST BE DONE AGAIN WITHIN 3
SECONDS OF THE FIRST OPERATION.
3. IGNITION KEY REMINDER OPERATION
*OPERATION OF DOOR LOCK BUTTON (OPERATION OF DOOR LOCK MOTORS)
WHEN THE IGNITION KEY IS IN THE CYLINDER (UNLOCK WARNING SW ON) AND THE DOOR IS OPENED AND LOCKED USING DOOR
LOCK BUTTON (DOOR LOCK MOTOR), THE DOOR IS LOCKED ONCE BUT EACH DOOR IS UNLOCKED SOON BY THE OPERATION OF
THE ECU. AS A RESULT OF ECU ACTIVATION, THE CURRENT FLOWS FROM TERMINAL (A)9 OF THE ECU " TERMINAL (A)2 "
TERMINAL 4 (LH), TERMINAL 2 (RH) OF THE DOOR LOCK MOTORS " TERMINAL 2 (LH), TERMINAL 4 (RH) " TERMINAL (A)3 OF THE
ECU " TERMINAL (A)4 " GROUND AND CAUSES ALL THE DOOR LOCK CONTROL SW AND DOOR LOCK KEY SW.
*KEY LESS LOCK OPERATION
WHEN THE IGNITION KEY IS STILL INSERTED IN THE CYLINDER (UNLOCK WARNING SW ON), THE DOOR IS OPEN AND UNLOCK
OPERATION IS PREVENTED BY KEEPING THE DOOR LOCK BUTTON PRESSED TO THE LOCK SIDE, THE DOOR IS KEPT IN THE LOCK
CONDITION. IF THE DOOR IS THEN CLOSED, A SIGNAL IS INPUT TO THE ECU FROM THE DOOR COURTESY SW. THIS ACTIVATES
THE ECU AND EACH DOOR IS UNLOCKED.
SYSTEM OUTLINE

134
THEFT DETERRENT AND DOOR LOCK CONTROL
D10, D11 DOOR COURTESY SW LH, RH
3±2 : CLOSED WITH DOOR OPEN
D12, D13 DOOR KEY LOCK AND UNLOCK SW LH, RH
1±3 : CLOSED WITH DOOR LOCK CYLINDER UNLOCKED WITH KEY
2±3 : CLOSED WITH DOOR LOCK CYLINDER LOCKED WITH KEY
D15, D16 DOOR LOCK MOTOR AND DOOR UNLOCK DETECTION SW LH, RH
1±3 : CLOSED WITH UNLOCK POSITION
E 6 ENGINE HOOD COURTESY SW
1±2 : CLOSED WITH ENGINE HOOD OPEN
U 1 UNLOCK WARNING SW
2±1 : CLOSED WITH IGNITION KEY IN CYLINDER
L 3 LUGGAGE COMPARTMENT KEY UNLOCK SW
2±1 : CLOSED WITH DOOR LOCK CYLINDER UNLOCKED WITH KEY
L 5 LUGGAGE COMPARTMENT LIGHT SW
1±GROUND: CLOSED WITH DOOR OPEN
T 7(A), T13(B) THEFT DETERRENT ECU
(B) 9±GROUND: CONTINUOUS WITH LUGGAGE COMPARTMENT DOOR TO UNLOCK POSITION
(B)14±GROUND: CONTINUOUS WITH ENGINE HOOD OPEN
(B) 4±GROUND: CONTINUOUS WITH LUGGAGE COMPARTMENT DOOR OPEN
(B) 8±GROUND: CONTINUOUS WITH DOOR LOCK CONTROL SW TO UNLOCK POSITION
(B) 5±GROUND: CONTINUOUS WITH DOOR LOCK CONTROL SW TO LOCK POSITION
(B)25±GROUND: APPROX. 12 VOLTS WITH SHIFT LEVER IN N OR P POSITION AND IGNITION SW AT ST POSITION (A/T)
; APPROX. 12 VOLTS WITH CLUTCH PEDAL FULLY DEPRESSED (M/T)
(A) 7±GROUND: APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
(B)20±GROUND: CONTINUOUS WITH IGNITION KEY IN CYLINDER
(B)15±GROUND: CONTINUOUS WITH LH DOOR TO UNLOCK POSITION
(B)21±GROUND: CONTINUOUS WITH RH DOOR TO UNLOCK POSITION
(B) 6±GROUND: CONTINUOUS WITH DOOR KEY LOCK AND UNLOCK SW LH TO UNLOCK POSITION
(B)16±GROUND: CONTINUOUS WITH DOOR KEY LOCK AND UNLOCK SW RH TO UNLOCK POSITION
(B)22±GROUND: CONTINUOUS WITH DOOR KEY LOCK AND UNLOCK SW TO LOCK POSITION
(A) 4±GROUND: ALWAYS CONTINUOUS
(B) 1±GROUND: ALWAYS APPROX. 12 VOLTS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 928E624 (2JZ±GTE)T125 (2JZ±GTE)
D1030E 626 (2JZ±GE)T 127 (2JZ±GE)
D1130I2029T 529
D1230L 330T 7A29
D1330L 530T13B29
D1430P225 (2JZ±GTE)U 129
D1530P 227 (2JZ±GE)
D1630P 830
: 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)
1B20ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1D20FRONT DOOR LH WIRE AND J/B NO.1 (LEFT KICK PANEL)
1E20INSTRUMENT PANEL WIRE AND J/B NO.1 (LEFT KICK PANEL)
1H
1I20COWL WIRE AND J/B NO 1(LEFT KICK PANEL)1J20COWL WIRE AND J/B NO.1(LEFT KICK PANEL)
1K
2A22BATTERY AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
SERVICE HINTS

135
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA132 (2JZ±GTE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO 2)EA134 (2JZ±GE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO. 2)
IB236ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL)IB336ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL)
IB636ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)
IC236FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL)
ID136FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
IE136INSTRUMENT PANEL WIRE AND FLOOR NO. 2 WIRE (LEFT KICK PANEL)
IF136INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)IF236INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)
IF336INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT KICK PANEL)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
IJ138ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)IJ238ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
IL138FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA32 (2JZ±GTE)FRONT SIDE OF RIGHT FENDEREA34 (2JZ±GE)FRONT SIDE OF RIGHT FENDER
IE36LEFT KICK PANEL
IG36RIGHT KICK PANELIH36RIGHT KICK PANEL
BI40LEFT QUARTER PILLAR
BJ40LOWER BACK PANEL CENTER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 238COWL WIREI2138INSTRUMENT PANEL WIRE
I 338INSTRUMENT PANEL WIREB 140FRONT DOOR LH WIRE
I 438COWL WIREB 240FRONT DOOR RH WIRE
I1938INSTRUMENT PANEL WIRE

136
POWER WINDOW
1J 2 1D 9 1D 10 1J 11I 7 30A
DOOR
IEPOWER
MAIN
RELAY
POWER WINDOW MASTER SW P8
8 4
L
L
W±BLL
W±B
FROM POWER SOUCE SYSTEM(
SEE PAGE 56)
23 15 2 1
B 1A7A6A9
B 19 A4 THEFT DETERRENT
ECUB T7 , T13A
KEY OFF POWER CIRCUIT
B 7
IH IG BI 2 3
2 3IF3 4 IF2 3
IC2 15 7. 5A
DOME
210A
ECU±IG
1E 17
1B 5
1E 111H 15
IF113
IF312
Y L±W
R R
B±R R±B R±B R±B W±B
W±B R±L R±L
W±BY
L±W DOOR COURTESY SW LH
DOOR COURTES Y SW RH D10
D11

137
M 21
M 211325
4 IL1 4IL117 IL13 ID1 14 ID115 910 5 7
POWER WINDOW
CONTROL SW RH
POWER WINDOW MOTOR RH POWER WINDOW MOTOR LH
UP
DOWN
LOCK
NORMAL
UP
DOWNUP
DOWN
AUTO
PASSENGER' S DRIVER' S POWERWINDOWMASTERSW
S
RQ
P7
P8
±
+
+
±
R± L
G± W
L R±WG±Y
R±L
G± W
LR±L
G±W
L G±YR
L
P9 P10IF3 5
DOWN
UP