1995 TOYOTA SUPRA Service Repair Manual

Page 1985 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
Check IAC valve.
Disconnect  IAC valve connector.
Measure resistance between terminals shown be-
low.
Replace IAC valve.
Remove IAC valve.
(1) Connect  the battery positive lead t

Page 1986 of 2543

TOYOTA SUPRA 1995  Service Repair Manual VSV Circuit for ACIS
CIRCUIT DESCRIPTION
The circuit opens and closes the IACV (Intake Air Control Valve) in response to the engine load in order
to increase the intake efficiency (ACIS: Acoustic Cont

Page 1987 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
Check VSV for ACIS.
(1) Remove VSV.
(2) Disconnect VSV connector.
(1) Measure resistance between terminals.
(2) Measure resistance between each terminal
and the body.
(1) Resistan

Page 1988 of 2543

TOYOTA SUPRA 1995  Service Repair Manual (See page EG±404)
(See page EG±230)
Check voltage between terminal ACIS of engine control module connector
and body ground.
(1) Connect  SST (check harness ªAº).
(See page EG±404)
SST 09990±0100

Page 1989 of 2543

TOYOTA SUPRA 1995  Service Repair Manual VSV Circuit for Fuel Pressure Control (Only for California spec.)
CIRCUIT DESCRIPTION
The ECM turns on a VSV (Vacuum Switching
Valve) to draw air into the diaphragm cham-
ber of the pressure regulator

Page 1990 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
Check VSV for fuel pressure control.
(1) Remove VSV.
(2) Disconnect VSV connector.
(1) Measure resistance between terminals.
(2) Measure resistance between each terminal
and the b

Page 1991 of 2543

TOYOTA SUPRA 1995  Service Repair Manual (See page EG±404)
Check voltage between terminal FPU of engine control module connector
and body ground.
(1) Connect  SST (check harness ªAº).
(See page EG±404)
SST 09990±01000
(2) Turn ignition

Page 1992 of 2543

TOYOTA SUPRA 1995  Service Repair Manual TE1 TE2 Terminal Circuit
CIRCUIT DESCRIPTION
Terminal TE1 is located in data link connectors 1 and 2. Terminal TE2 is located ONLY in data link connector
2.
The data link connector 1 is located in the