1995 TOYOTA SUPRA change time

INDICATOR CHECK
1. Turn the ignition switch on while pressing the air conditioning
control AUTO switch and R/F SW simultaneously.
2. Check that all the indicators light up and go off at 1
second intervals 4 times in succession.
HINT:
wAfter the indicator check is ended, the diagnostic sensor
check begins automatically.
wPress the OFF switch when cancelling the check mode.
DIAGNOSTIC SENSOR CHECK
1. Perform an indicator check. After the indicator check is
completed, the system enters the diagnostic sensor check
mode automatically.
2. Check the LED blinking on the panel. Refer to the list of codes
on page AC±20 when translating the trouble code from the
LED blinking.
If the slower display is desired, press the RDEF switch and
change it to step operation. Each time the RDEF switch is
pressed, the blinking LED changes by 1 step.
CLEARING TROUBLE CODES' MEMORY
Method 1:
1. Pull out the ECU±B fuse in Junction Block No. 1 for 10 sec.
or longer to clear the trouble codes' memory.
2. After reinserting the fuse, check that the normal code is
output.
Method 2:
Press the RDEF switch while pushing the A/C switch during
the sensor check mode. AC±18
± AIR CONDITIONING SYSTEMTROUBLESHOOTING

Step No.
Conditions
Blower
MotorAir Flow
ventAir Inlet
damper
Set
Temperature
°C (°F)
Magnetic
clutchAir mix
damper
ACTUATOR CHECK
1. After entering the sensor check mode, press the R/F switch.
2. Turn the temperature set dial and change it to step operation.
Each time the dial is turned, the actuator operation changes
by 1 step.
HINT:
wCheck the change of actuator operation visually and by
hand.
wTo cancel the check mode, press the OFF switch. AC±22
± AIR CONDITIONING SYSTEMTROUBLESHOOTING

(See page IN±30).
Check voltage between terminals TP and SG of A/C amplifier connector.
Check air mix damper position sensor.
Check and replace A/C amplifier.
Check harness and connector between A/C amplifier and air mix
damper control servo motor assembly (See page IN±30).
Repair or replace harness or connector.
Replace air mix damper control servo motor as-
sembly.
Proceed to next circuit inspection shown on matrix
chart (See page AC±26). However, if the light is still
blinking, check and replace A/C amplifier.
Set TemperatureVoltage
PositionResistance
Remove A/C amplifier with connectors still connected.
1. Turn ignition switch ON.
2. Change the set temperature to activate the air mix
damper control servo motor, and measure the volt
age between terminals TP and SG of A/C amplifier
connector each time when the set temperature is
changed.
HINT: As the set temperature increases, the voltage decreases.
1. Remove instrument panel.
2. Disconnect air mix damper control servo motor as
sembly connector.
Measure resistance between terminals 4 and 5 of air
mix damper control servo motor assembly connector.
While operating air mix damper control servo motor,
following the procedure on page AC±44, measure re-
sistance between terminals 5 and 3 of air mix damper
control servo motor assembly connector.
HINT: As the air mix damper control servo motor moves from
cool side to hot side, the resistance decreases.
Resistance: 4.8 ~ 7.2 k

INSPECTION PROCEDURE
± AIR CONDITIONING SYSTEMTROUBLESHOOTINGAC±43

DTC 62 63 No.1 No. 2 Solenoid Valve Circuit
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the No.1 and No.2 solenoid valves controlled
by ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the remaining normal
solenoid to allow the vehicle to be operated smoothly (Fail safe function).
Fail Safe Function
If either of the solenoid valve circuits develops a short or an open, the ECM turns the other solenoid ON and
OFF to shift to the gear positions shown in the table below. The ECM also turns the lock±up solenoid valve OFF
at the same time. If both solenoids malfunction, hydraulic control cannot be performed electronically and must
be done manually.
Manual shifting as shown in the following table must be done (In the case of a short circuit, the ECM stops send-
ing current to the short circuited solenoid).
 
 
Position
 
 NORMAL
 
 NO.1 SOLENOID
MALFUNCTIONING 
 NO.2 SOLENOID
MALFUNCTIONING 
 BOTH SOLENOIDS
MALFUNCTIONING
 
 
Position 
 Solenoid valve 
 Gear
 
 Solenoid valve 
 Gear
 
 Solenoid valve 
 Gear
 
 Gear when shift
selector is manually
  No.1 No.2 Gear No.1 No.2 Gear No.1 No.2 Gear 
selector is manually
operated
  ON OFF 1st X ON 3rd ON X 1st O/D
 D ON ON 2nd X ON 3rd OFF X O/D O/D
  OFF ON 3rd X ON 3rd OFF X O/D O/D
  OFF OFF O/D X OFF O/D OFF X O/D O/D
  ON OFF 1st X ON 3rd ON X 1st 3rd
 2 ON ON 2nd X ON 3rd OFF X 3rd 3rd
  OFF ON 3rd X ON 3rd OFF X 3rd 3rd
 
L
 ON OFF 1st X OFF 1st ON X 1st 1st
 L ON ON 2nd X ON 2nd ON X 1st 1st
X: Malfunctions
Check the No.1 solenoid when diagnostic trouble code 62 is output and check and No.2 solenoid when
diagnostic trouble code 63 is output.
 DTC No. Diagnostic Trouble Code Detection Condition Trouble Area 
 
 
 
 
 
 
 
 
 
 
 
 
 
62, 63
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(a) Solenoid resistance is 8
or lower (short cir±
cuit) when solenoid is energized.
(b) Solenoid resistance is 100 k
or higher (open
circuit) when solenoid is not energized.
The ECM checks for an open or short circuit in the
No.1 and No.2 solenoid circuit when it changes
gear position.
The ECM records diag. trouble code 62 or 63 if
condition (a) or (b) is detected once, but it does
not blink the O/D OFF indicator light.
After the ECM detects the condition (a) or (b)
continuously 8 times or more in one±trip *, it
causes the O/D OFF indicator light to blink until
condition (a) or (b) disappears.
After that, if the ECM detects condition (a) or
(b) one, it starts blinking the O/D OFF indicator
light again. 
 
 
 
 
 
 
 
 
 
 
 
 
 

Solenoid valve

Harness or connector between solenoid and

ECM

ECM
* one±trip (1st trip) See page AT1±54 AT1±72
± AT340E (2JZ±GE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

DTC 62 63 No.1 No.2 Solenoid Valve Circuit
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the No.1 and No.2 solenoid valves
controlled by ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the
remaining normal solenoid to allow the vehicle to be operated smoothly (Fail safe function).
Fail Safe Function
If either of the solenoid valve circuits develops a short or an open, the ECM turns the other solenoid ON
and OFF to shift the gear positions shown in the table below. If both solenoids malfunction, the hydraulic
control is not made electronically and can only be operated manually.
Manual shifting, as shown in the following table must be done (In the case of a short circuit, the ECM stops
sending current to the short circuited solenoid).
 
 
Pi
 
 NORMAL
 
 NO 1 SOLENOID
MALFUNCTIONING 
 NO 2 SOLENOID
MALFUNCTIONING 
 BOTH SOLENOIDS
MALFUNCTIONING
 
 
Posi-
tion 
 Solenoid
valve 
 Gear
 
 Solenoid
valve 
 Gear
 
 Solenoid valve
 
 Gear
 
 Gear when shift selector
is manually operated  No.1 No.2 Gear No.1 No.2 Gear No.1 No.2 Gear is manually operated
  ON OFF 1st X ON 3rd ON X 1st O/D 
 D
 
 ON
 
 ON
 
 2nd
 
 X
 
 ON
 
 3rd
 
 OFF
 
 X
 
 O/D
 
 O/D
 
D
 OFF ON 3rd X ON 3rd OFF X O/D O/D
  OFF OFF O/D X OFF O/D OFF X O/D O/D
  ON OFF 1st X ON 3rd ON X 1st 3rd
 2 (S) ON ON 2nd X ON 3rd OFF X 3rd 3rd
 
()
 OFF ON 3rd X ON 3rd OFF X 3rd 3rd
 
L
 ON OFF 1st X OFF 1st ON X 1st 1st L ON ON 2nd X ON 2nd ON X 1st 1st
X: Malfunctions
Check the No.1 solenoid when diagnostic trouble code 62 is output and check the No.2 solenoid when
diagnostic trouble code 63 is output.
 
 DTC No. 
 Diagnostic Trouble Code Detection Condition 
 Trouble Area
 
 
 
 
 
 
 
 
 
 
 
 
62, 63
 
 
 
 
 
 
 
 
 
 
 
 
(a) Solenoid resistance is 8
or lower (short circuit) when
solenoid is energized.
(b) Solenoid resistance is 100 k
or higher (open circuit)
when solenoid is not energized.
The ECM checks for an open or short circuit in the No.1
and No.2 solenoid circuit when it changes gear position.
The ECM records DTC 62 or 63 if condition (a) or (b) is
detected once, but it does not blink the O/D OFF indicator
light.
After the ECM detects the condition (a) or (b) continuously
8 times or more, it causes the O/D OFF indicator light to
blink until condition (a) or (b) disappears.
After that, if the ECM detects condition (a) or (b) one, it
starts blinking the O/D OFF indicator light again. 
 
 
 
 
 
 
 
 
 
 
 

Solenoid valve

Harness or connector between sole±
noid and ECM

ECM
AT2±82± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

SPEEDOMETER INSPECTION
ON±VEHICLE
Using a speedometer tester, inspect the speedometer for al-
lowable indication error and check the operation of the odom-
eter.
HINT: Tire wear and tire over or under inflation will increase
the indication error.
If error is excessive, replace the speedometer.
  USA (mph)  CANADA (km/h)
 Standard indication Allowable range  Standard indication Allowable range 
 20 18±24 
 20 17±24
 40 38±44 40 38±46
 60 56±66 60 57.5±67
 80 78±88 80 77±88
 100 98±110 100 96±109 
 120 118±132
 
 120 115±130
  140 134±151.5
  160 153±173
VEHICLE SPEED SENSOR INSPECTION
INSPECT SENSOR OPERATION
(a) Connect the positive (+) lead from battery to terminal 1 and
negative (±) lead to terminal 2.
(b) Connect the positive (+) lead from tester to terminal 3 and
negative (±) lead to terminal 2.
(c) Rotate shaft.
(d) Check that there is voltage change from approx. 0 V to 11 V
or more between terminals 2 and 3.
HINT: The voltage change should be 4 times for every revolu-
tion of the speed sensor shaft.
If operation is not as specified, replace the sensor. BE±46
± BODY ELECTRICAL SYSTEMCOMBINATION METER

4. CHECK PEDAL RESERVE DISTANCE
Release the parking brake.
With the engine running, depress the pedal and measure the
pedal reserve distance, as shown.
Pedal reserve distance at 490 N (50 kgf, 110.2 lbf):
w/o TRAC: More than 72 mm (2.83 in.)
w/ TRAC: More than 70 mm (2.76 in.)
If the reserve distance is incorrect, troubleshoot the brake
system.
BRAKE BOOSTER OPERATIONAL TEST
1. OPERATING CHECK
(a) Depress the brake pedal several times with the engine off
and check that there is no change in the pedal reserve
distance.
(b) Depress the brake pedal and start the engine. If the pedal
goes down slightly, operation is normal.
2. AIR TIGHTNESS CHECK
(a) Start the engine and stop it after 1 or 2 minutes. Depress the
brake pedal several times slowly. If the pedal goes down
farthest the 1st time, but gradually rises after the 2nd or 3rd
time, the booster is air tight.
(b) Depress the brake pedal while the engine is running, and
stop the engine with the pedal depressed. If there is no
change in the pedal reserve travel after holding the pedal for
30 seconds, the booster is air tight.
BRAKE SYSTEM BLEEDING
HINT: If any work is done on the brake system or if air in the
brake lines is suspected, bleed the system of air.
NOTICE: Do not let brake fluid remain on painted sur-
faces. Wash it off immediately.
1. REMOVE RESERVOIR CAP
Turn the reservoir cap to the ºopenº side and remove it.
2. FILL RESERVOIR WITH BRAKE FLUID
Fluid:
SAE J1703 or FMVSS NO.116 DOT3
± BRAKE SYSTEMCHECK AND ADJUSTMENTBR±7

9. INSTALL CALIPER
(a) Draw out a small amount of brake fluid from the reservoir.
(b) P re ss in th e pisto n with wa te r pu mp plie rs or simila r
implement.
HINT:
wAlways change the pads on one wheel at a time as there
is a possibility of the opposite piston flying out.
wIf the piston is difficult to push in, loosen the bleeder plug
and push in the piston while letting some brake fluid
escape.
(c) Install the caliper.
(d) Hold the sliding pin and torque the installation bolt.
Torque: 34 NVm (350 kgfVcm, 25 ftVlbf)
10. INSTALL FRONT WHEEL
11. CHECK THAT FLUID LEVEL IS AT MAX LINE
CALIPER REMOVAL
Installation is in the reverse order of removal.
AFTER INSTALLATION, FILL BRAKE RESERVOIR WITH
BRAKE FLUID, BLEED BRAKE SYSTEM (See page BR±7)
AND CHECK FOR LEAKS
1. DISCONNECT BRAKE HOSE
(a) Remove the union bolt and 2 gaskets from the brake caliper,
then disconnect the brake hose from the brake caliper.
Torque: 29 NVm (300 kgfVcm, 21 ftVlbf)
INSTALLATION HINT: Install the flexible hose lock securely
in the lock hole in the caliper.
(b) Use a container to catch the brake fluid as it drains out.
2. REMOVE CALIPER
(a) Hold the sliding pin and loosen the 2 installation bolts.
Torque: 34 NVm (350 kgfVcm, 25 ftVlbf)
(b) Remove the 2 installation bolts.
(c) Remove the caliper from the torque plate.
3. REMOVE THESE PARTS:
(a) 2 anti±squeal springs
(b) 2 brake pads with anti±squeal shims
± BRAKE SYSTEMFRONT BRAKE (2JZ±GE)BR±19