1997 TOYOTA SUPRA Service Repair Manual

Page 721 of 1807

TOYOTA SUPRA 1997  Service Repair Manual A00730
ONCheck Harness A
ECM
A1
IGSW(+)
N08417
J/B No.1
IGN Fuse
DI-306
- DIAGNOSTICSENGINE (2JZ-GTE)
534 Author: Date:
1997 SUPRA   (RM502U)
3 Check voltage between terminal IGSW of ECM connector a

Page 722 of 1807

TOYOTA SUPRA 1997  Service Repair Manual A00731
ONCheck Harness A
ECM
A24 M-REL  (+)
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-307
535 Author: Date:
1997 SUPRA   (RM502U)
5 Check ignition switch (See page BE-13).
NG Replace ignition switch.
OK
Chec

Page 723 of 1807

TOYOTA SUPRA 1997  Service Repair Manual DI-308
- DIAGNOSTICSENGINE (2JZ-GTE)
536 Author: Date:
1997 SUPRA   (RM502U)
8 Check EFI main relay (Marking: EFI MAIN) (See page SF-54).
NG Replace EFI main relay (Marking: EFI MAIN).
OK
9 Check fo

Page 724 of 1807

TOYOTA SUPRA 1997  Service Repair Manual FI6897
Pressure
Regulator
From Fuel Tank To
Fuel
Tank
(Return) Intake
Manifold ECMVSV
S03472
Battery
B
EB
W-BEFI No.1
R/B
No.2
1
2A2
B-W
222
2
EFI Relay
R/B
No.2
21 5
3B-R5
EA2
B-Y
EA18
VSV for Fuel
P

Page 725 of 1807

TOYOTA SUPRA 1997  Service Repair Manual A00732
ON
E
Air Filter
E
G VSV: ON
VSV: OFF
DI-310
- DIAGNOSTICSENGINE (2JZ-GTE)
538 Author: Date:
1997 SUPRA   (RM502U)
INSPECTION PROCEDURE
TOYOTA hand-held tester
1 Connect the TOYOTA hand-held t

Page 726 of 1807

TOYOTA SUPRA 1997  Service Repair Manual A00733
ON
Check Harness A
B73
FPU(+)
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-31 1
539 Author: Date:
1997 SUPRA   (RM502U)
3 Check for open and short in harness and connector between EFI main relay
(Marking

Page 727 of 1807

TOYOTA SUPRA 1997  Service Repair Manual DI-312
- DIAGNOSTICSENGINE (2JZ-GTE)
540 Author: Date:
1997 SUPRA   (RM502U)
3 Check fuel pressure regulator (See page SF-1).
NG Repair or replace.
OK
Check and replace ECM (See page IN-28).

Page 728 of 1807

TOYOTA SUPRA 1997  Service Repair Manual P19604
A/C Amplifier
5 V
6
A14L-R31
II1L-R34
AAC1ECM
E1
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-313
541 Author: Date:
1997 SUPRA   (RM502U)
A/C Cut Control Circuit
CIRCUIT DESCRIPTION
This circuit cuts air