TOYOTA SUPRA 1995 Service Repair Manual

TOYOTA SUPRA 1995 Service Repair Manual SUPRA 1995 TOYOTA TOYOTA https://www.carmanualsonline.info/img/14/57468/w960_57468-0.png TOYOTA SUPRA 1995 Service Repair Manual
Trending: suspension, child lock, diagram, brakes, ECU, remove seats, roof rack

Page 1011 of 2543

TOYOTA SUPRA 1995  Service Repair Manual DTC 41 IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the ECU, hence the CPU and the actuators.
 DTC No. Diagnostic Trouble Co

Page 1012 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
Check battery positive voltage.
Voltage:  10 ± 14 V
Check and repair the charging system.
Remove TRAC ECU with connectors still
connected.
Turn ignition switch ON.
Measure voltag

Page 1013 of 2543

TOYOTA SUPRA 1995  Service Repair Manual (See page IN±30).
Remove ECU±IG fuse from J/B No. 1.
Check continuity of ECU±IG fuse.
Continuity
Check ECU±IG fuse.
Check for short in all the harness and components
connected to ECU±IG fuse.
Che

Page 1014 of 2543

TOYOTA SUPRA 1995  Service Repair Manual DTC 43 ABS & TRAC ECU Malfunction
CIRCUIT DESCRIPTION
 DTC No. Diagnostic Trouble Code Detecting Condition Trouble area


Page 1015 of 2543

TOYOTA SUPRA 1995  Service Repair Manual Check voltage between terminal BRFA of TRAC ECU and body ground.
Remove TRAC ECU with connectors still con-
nected.
Turn ignition switch ON.
Measure voltage between terminal BRFA of TRAC
ECU and body

Page 1016 of 2543

TOYOTA SUPRA 1995  Service Repair Manual DTC 44 NE Signal Circuit
CIRCUIT DESCRIPTION
The TRAC ECU receives engine speed signals (NE signals) from the ECM.
 DTC No. Diagnostic Trouble Code De

Page 1017 of 2543

TOYOTA SUPRA 1995  Service Repair Manual (See page IN±30).
Check voltage between terminal NEO of TRAC ECU and body ground.
Remove TRAC ECU with connectors still con-
nected.
Repair or replace harness or connector.
Check and replace TRAC ECU

Page 1018 of 2543

TOYOTA SUPRA 1995  Service Repair Manual DTC 45 46 Main Throttle Position Sensor Circuit
CIRCUIT DESCRIPTION
This circuit is not directly related to the TRAC control, but as it has an influence on TRAC control when trouble
occurs in this cir

Page 1019 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
HINT: The main throttle position sensor signal is transmitted to the TRAC ECU from ECM, so if an error occurs
at the engine side, the TRAC ECU also detects it.
If diagnostic troub

Page 1020 of 2543

TOYOTA SUPRA 1995  Service Repair Manual (See page IN±30).
page IN±30).
(See
(See page IN±30).
(See page EG±554).
Check for open and short in harness and connector between terminal IDL1
of TRAC ECU and main throttle position sensor with
Trending: air bleeding, coolant temperature, maintenance, wiper fluid, transmission fluid, air conditioning, rear view mirror