1995 TOYOTA SUPRA wheel

HYDRAULIC TEST
MEASURE LINE PRESSURE
NOTICE:
wDo the test at normal operating fluid temp. 50±805C (122±1765F)
wThe line pressure test should always be carried out in pairs. One technician should observe
the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
wBe careful to prevent the oil pressure gauge hose from interfering with the exhaust pipe.
(a) Warm up the transmission fluid.
(b) Remove the test plug on the transmission case left side and connect the oil pressure gauge (SST).
SST 09992±00094 (Oil pressure gauge)
HINT: Connecting the oil pressure gauge will be made easier by moving LH side heat insulator side.
(c) Chock the 4 wheels.
(d) Fully apply the parking brake.
(e) Start the engine and check idling speed.
(f) Keep your left foot pressed firmly on the brake pedal and shift into D position.
(g) Measure the line pressure when the engine is idling.
(h) Fully depress the accelerator. Quickly read the highest line pressure when engine speed reaches stall
speed.
NOTICE: Release the accelerator pedal and stop test if the wheels begin to rotate before the engine
speed reaches specified stall speed.
(i) In the same manner, do the test in R position. AT2±48
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

(f) Fully apply the parking brake and chock the 4 wheels.
(g) Start the engine and check idling speed.
(h) Keep your left foot pressed firmly on the brake pedal and shift into D position.
(i) Measure the accumulator back pressure.
(j) With the conditions the same as in (h), ground the other probe or the test lead which has one end inserted
into the terminal SLN of the ECM harness side connector, then measure the accumulator back pressure
again.
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±51

STANDARD VALUE OF ECM TERMINAL
(*A= (E10), B= (E9))
 Terminals Symbols Wiring
Color Condition Standard
Value
 B13 ± B69 SLN±E1 Y±G eBR Ignition switch ON 10 ± 14 V B14 ± B69 SLU±E1 LG±B eBR Ignition switch ON 10 ± 14 V
     Shift Lever: P or N position Below 1 V
 B76 ± B69 NSW±E1 B±W eBR IG ON Shift Lever: Other than
P or N position 10 ± 14 V
 B1 ± B21 NCO±NCO L eY IG OFF, Disconnect ECM connector 560 ± 680
 B3 ± B23 SP2±SP2 G e R IG OFF 560 ± 680

    IG OFF 10 ± 16

 B10 ± B69 S1 ± E1 WR eBR Vehicle driving in 2nd gear position 10 ± 14 V

B10 B69

S1 E1

WR eBR
IG ON10 ± 14 V    IG OFF 10 ± 16
 B9 ± B69 S2 ± E1 RL eBR Vehicle driving in 2nd or 3rd position 10 ± 14 V
 B9 B69 S2 E1 RL eBR IG ON Below 0.5 V
Accel Pedal is not depressedBelow 1 5 V B43 ± B65 VTA1 ± E2 YeBR IG ON Accel. Pedal is not depressed Below 1.5 V
 B43 ± B65 VTA1 ± E2 Y eBR IG ON Accel. Pedal is fully depressed 3.0 ± 5.5 V
IDL1 E2Accel Pedal is not depressedBelow 1 VB64 B65IDL1 ± E2ReBRIG ONAccel. Pedal is not depressedBelow 1 V B64 ± B65 IDL1 E2 R eBR IG ON Accel. Pedal is depressed 10 ± 14 V 
 A2 ± B65
 
 SP1 ± E2
 
 P eBR
 
 Ignition switch ON
turn one rear wheel slowly 
 Repeat 0±8 V
or above
 
 A3 ± B69
 
 KD±E1
 
 YeBR
 
 IG ON
 
 
Kickdown SW: OFF
(Accel. pedal is not depressed) 
 10 ± 14 V
 
 
A3 ± B69 
 
KD ± E1 
 
Y eBR 
 
IG ON 
 
Kickdown SW: ON
(Accel. pedal is fully depressed) 
 Below 0.5 V
Shift position: R position10 ± 14 V 
 A7 ± B69 
 R ± E1 
 RB eBR 
 IG ON 
 Shift position: Other than R
position 
 Below 0.5 V
     Shift position: 2 position 10 ± 14 V
 
 
A9 ± B69 
 
2 ± E1 
 
LG±R eBR 
 
IG ON 
 
Shift position: Other than 2
position 
 Below 0.5 V
Shift position: L position10 ± 14 V 
 A10 ± B69 
 L ± E1 
 G±B eBR 
 IG ON 
 Shift position: Other than L
position 
 Below 0.5 V
 A12 ± B69 OD1 ± E1 BR±B eBR Ignition switch ON 4 ± 6 V
AT2±60± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

WIRING DIAGRAM
Check voltage between terminal SP1 of ECM connector and body ground.
Check operation of odometer and trip meter (telltale light RH
(See page BE±48)).
Check and replace ECM.
Repair or replace harness or connector between
ECM and telltale light RH.
Go to
1. Shift the shift lever to N position
2. Jack up one of the rear wheels.
3. Connect the Check Harness A.
See page EG±510)
(1) Disconnect power steering ECU connector
and cruise control ECU connector.
(5) Turn ignition switch ON.
Measure voltage between terminal SP1 of ECM
connector and body ground when the wheel is
turned slowly.
Voltage is generated intermittently.
INSPECTION PROCEDURE
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±73

SERVICE SPECIFICATIONS
SERVICE DATA
 





Line pressure (wheel locked) Engine idling
D position
R position
AT stall
D position
R position 
 
 
 
 
471±530 kPa 4.8±5.4 kgf/cm2 68±77 psi
686±785 kPa 7.0±8.0 kgf/cm
2 100±114 psi
1,334±1,470 kPa 13.6±15.0 kgf/cm
2 193±213 psi
1,697±2,030 kPa 17.3±20.7 kgf/cm
2 246±294 psi Engine stall revolution D and R position 2,600 +150 rpm 


Time lag N "D position
N "R positionposition 
 Less than 1.2 seconds
Less than 1.5 seconds
 


Engine idle speed
(In N position and air conditioner OFF) 
 650 +50 rpm
 


Drive plate runout Max.
Torque converter clutch runout Max. 
 
0.20 mm 0.0079 in.
0.1 mm 0.004 in.
SHIFT POINT
NORM Mode
Shift positionShifting pointVehicle speed km/h (mph) 
 
 
 
 
 
 
D
 
 
 
 
 
 
 
Throttle valve fully opened 1"2
2"3
3"O/D
O/D"3
3"2
2"1
Throttle valve fully closed 3"O/D
O/D"3
 
 
 
 
 
 
 
62±72 (39±45)
120±129 (75±80)
187±201 (116±125)
181±195 (112±121)
109±117 (68±73)
41±47 (25±29)
29±34 (18±25)
23±28 (14±17)
 
 
 2
 
 
 
Throttle valve fully opened 1"2
*3"2
2"1 
 
 
62±72 (39±45)
135±147 (84±91)
41±47 (25±29)
 L Throttle valve fully opened *2"1 60±66 (37±41)
MANU Mode
 Shift position Shifting point Vehicle speed km/h (mph)
 
 
 
 
 
D
 
 
 
 
 
Throttle valve fully opened 2"3
3"O/D
O/D"3
3"2
Throttle valve fully closed 3"O/D
O/D"3 
 
 
 
 
122±131 (76±81)
194±207 (121±129)
187±201 (116±125)
109±117 (68±73)
181±195 (112±121)
23±28 (14±17)
 2 Throttle valve fully opened *3"2 135±147 (84±91)
 L Throttle valve fully opened *2"1 60±66 (37±41)
* Shift points is the same when the throttle valve is closed as when the throttle valve is opened. AT2±116
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONSERVICE SPECIFICATIONS

PRECAUTION
Take care to observe the doing precautions when performing inspections or removal and replacement of
body electrical related parts.
HEADLIGHT SYSTEM
wHalogen bulbs have pressurized gas inside and require special handling. They can burst if scratched or
dropped. Hold a bulb only by its plastic or metal case.
Don't touch the glass part of a bulb with bare hands.
SRS (SUPPLEMENTAL RESTRAINT SYSTEM)
wWork must be started after 90 seconds from the time the ignition switch is turned to the ºLOCKº position
and the negative (±) terminal cable is disconnected from the battery.
wWhen disconnecting any of the connectors in the SRS, be sure to lock the ignition switch and disconnect
the negative (±) terminal cable from the battery first. Since the connectors are twin lock type connectors,
disconnect the connectors only after releasing the first stage lock.
wWhen connecting SRS connectors, be sure to lock them securely. (If the connectors are not locked
securely, the system may not operate when needed.)
wAlways store the steering wheel pad with the pad surface facing upward. (Storing the pad with its metallic
surface up may lead to a serious accident if the SRS inflates for some reason.)
wWhen installing the spiral cable, be sure the vehicle is in the straight ahead condition and confirm that the
spiral cable is in the neutral position when it is installed.
wINFORMATION LABELS (NOTICE) are attached to the periphery of the SRS components. Follow the
NOTICE.
AUDIO SYSTEM
wIf the negative (±) terminal cable is disconnected from the battery, the preset AM, FM 1 and FM 2 stations
stored in memory are erased, so be sure to note the stations and reset them after the battery terminal is
reconnected.
wIf the negative (±) terminal cable is disconnected from the battery, the ºANTI±THEFT SYSTEMº will operate
when the cable is reconnected, but the radio, tape player and CD player will not operate. Be sure to input
the correct ID number so that the radio, tape player and CD player can be operated again.
MOBILE COMMUNICATION SYSTEM
wIf the vehicle is equipped with a mobile communication system, refer to precautions in the IN section. BE±2
± BODY ELECTRICAL SYSTEMPRECAUTION

control switch (See page IN±30).
Switch position
Neutral
RES/ACC
SET/COAST
CANCEL
Replace cruise control switch.
Measure resistance between terminals 3 and 4 of
control switch connector when control switch is
operated.
Repair or replace harness or connector.
Check and replace ECU.
When diagnostic trouble code 34 is displayed, carefully
check that resistance is always 8 in neutral position,
particularly when switching between RES/ACC and
SET/COAST.
(1) Remove steering wheel center pad.
(2) Disconnect control switch connector (See
page RS Section).
Check control switch.
Check for open and short in harness and connector between ECU and
Resistance
± BODY ELECTRICAL SYSTEMCRUISE CONTROL SYSTEMBE±181

Check harness and connector between cruise control ECU and main
switch, main switch and body ground. (See page IN±30).
Proceed to next circuit inspection shown on matrix
chart (See page
BE±170).
(1) Turn ignition switch ON.
(2) Measure voltage between terminal CMS and
GND of cruise control ECU connector when main
switch is held on and off.
Remove cruise control ECU with connectors still con-
nected.
Main switch
Repair or replace harness or connector.
Check and replace cruise control ECU.
Voltage
Check continuity between terminals 2 and 4 of cruise
control switch connector when main switch is held on
and off.
(1) Remove steering wheel center pad (See page
RS Section).
(2) Disconnect cruise control switch connector.
Terminals
Main switch
OFF
Hold ON
Continuity
Check main switch.
Repair or replace harness or connector.
Check and replace cruise control ECU.
Replace control switch.
Check voltage between terminal CMS and GND of cruise control ECU
connector
BE±198± BODY ELECTRICAL SYSTEMCRUISE CONTROL SYSTEM