Page 937 of 1807
I02559
LOCK
E (-)+B1 (+)
DI-646
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
874 Author: Date:
1997 SUPRA (RM502U)
2 Check voltage between terminals +B1 and E of ECU connector.
PREPARATION:
(a) Remove the No.1 under cover and heater duct.
(b) Disconnect the theft deterrent and door lock ECU con-
nectors.
CHECK:
Measure voltage between terminals +B1 and E of ECU connec-
tor.
OK:
Voltage: 10 - 14 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI-615).
NG
3 Check for open in harness and connector between ECU and body ground
(See page IN-28).
NG Repair or replace harness or connector.
OK
Check and repair harness and connector be-
tween ECU and battery (See page IN-28).
Page 938 of 1807
I02560
J/B No.1 DOOR FuseTheft Deterrent and
Door Lock ECU
Door Lock MotorT7
12V L-W L-W
+B2
9 13
IF1 W-L
R/B No.2
R/B No.2
POWER ALT
B W
Battery
1B 1H2
15
2
2
2
2A
1
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-647
875 Author: Date:
1997 SUPRA (RM502U)
Actuator Power Source Circuit
CIRCUIT DESCRIPTION
This circuit provides power to drive the door lock motor.
WIRING DIAGRAM
DI4XE-01
Page 939 of 1807
N09001
Relay Block No.2
POWER M-Fuse
DI-648
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
876 Author: Date:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Check POWER M-fuse.
PREPARATION:
Remove POWER M fuse from R/B No.2.
CHECK:
Check continuity of POWER M-fuse.
OK:
Continuity
NG Check for short in all the harness and compo-
nents connected to the DOOR fusible link
(See attached wiring diagram). *
1
OK
Page 940 of 1807
I02561
LOCK
+B2 (+)
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-649
877 Author: Date:
1997 SUPRA (RM502U)
2 Check voltage between terminal +B2 of ECU connector and body ground.
PREPARATION:
(a) Remove the instrument panel. (See page BO-50)
(b) Disconnect the ECU connector.
CHECK:
Measure voltage between terminal +B2 of ECU connector and
body ground.
OK:
Voltage: 10 - 14 V
OK Proceed to next circuit inspection shown on
matrix chart (See page DI-615).
NG
Check and repair harness and connector be-
tween ECU and battery (See page IN-28).
*1: The power source is supplied to the actuator (door lock motor, through the theft deterrent and door lock
ECU. Accordingly, if a short circuit of the W/H or actuator occurs in the actuator circuit the POWER M-Fuse
may become OPEN, so also inspect the actuator (door lock motor circuit on page DI-647).
Page 941 of 1807
I02562
Door Lock Motor RH
Door Lock Motor LHTheft Deterrent and
Door Lock ECU
L-Y
L-Y L-YL-Y L-R
L-R L-RL-R ACT
+
312V
12V
ACT
-
2 L-YT7
12
IL12
411
IL1
5
ID1 16
ID14
2 DI-650
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
878 Author: Date:
1997 SUPRA (RM502U)
Door Lock Motor Circuit
CIRCUIT DESCRIPTION
This door lock motor locks and unlocks the door according to signals from the ECU.
WIRING DIAGRAM
DI4XF-01
Page 942 of 1807
N08716
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-651
879 Author: Date:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Check operating sound of door lock motor.
CHECK:
Check operating sound of door lock motor, when door lock con-
trol switch is pushed to the lock side and unlock side.
OK:
Can hear operating sound of door lock motor.
HINT:
Inspect the door which is malfunctioning.
OK Repair or replace door lock control link.
NG
Page 943 of 1807
N16142 N16142
N16142 N16142I04613
Driver's Side
Passenger's Side
2 (+)2 (-)
2 (-)
2 (+) Lock
Unlock
Passenger's Side Driver's Side
4 (-)4 (+)
4 (+)4 (-)
DI-652
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
880 Author: Date:
1997 SUPRA (RM502U)
2 Check door lock motor.
PREPARATION:
(a) Remove the door trim and service hole cover.
(b) Disconnect the door lock motor connector.
CHECK:
(a) Connect positive lead to terminal 2 (4) and negative
lead to terminal 4 (2) of door lock motor connector.
(b) Connect positive lead to terminal 4 (2) and negative
lead to terminal 2 (4) of door lock motor connector.
( ): Passenger's Side.
OK:
(1) Door lock motor locks door.
(2) Door lock motor unlocks door.
HINT:
This inspection must be carried out within 2 seconds.
OK Replace door lock motor.
NG
3 Check harness and connectors between ECU and door lock motor
(See page IN-28).
NG Repair or replace harness or connector.
OK
Proceed to next circuit inspection shown on
matrix chart (See page DI-615).
Page 944 of 1807
I02563
Door Lock Control Switch LH
(Power Window Master Switch)Theft Deterrent and
Door Lock ECU
Door Lock Control Switch RHT13
12V
R-W
G-RL1
5
UL1
8 J/B No.1
W-B
W-BW-BR-W
G-R
R-W
G-R
G-R R-W
W-B
IL1
IL1IL1 ID1ID17
1 2
1 10 1
16
4
2 310
9 IJ
ID8
IHIE
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-653
881 Author: Date:
1997 SUPRA (RM502U)
Door Lock Control Switch Circuit
CIRCUIT DESCRIPTION
When the door lock control switch is pushed to the lock side, Lock terminal of the switch is grounded, and
when the switch is pushed to the unlock side, unlock terminal is grounded (See wiring diagram below).
WIRING DIAGRAM
DI4XG-01