1995 TOYOTA SUPRA wiring

O D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving with cruise control activated, in order to minimize gear shifting and provide smooth uphill cruising,
overdrive may be prohibited temporarily in some conditions.
The Cruise Control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive shifting
until these signals are discontinued.
(For details, see the cruise control section, page BE±162)
WIRING DIAGRAM
INSPECTION PROCEDURE
Connect the Check Harness A to the ECM
(See page EG±404).
Turn ignition switch ON.
Check and replace ECM.
Check voltage between terminal OD1 of ECM connector and body ground.
Measure voltage between terminal OD1 of ECM
connector and body ground.
Proceed to next circuit inspection shown on
matrix chart (See page AT1±58).
Voltage: 4 ± 6 V
± AT340E (2JZ±GE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT1±91

TORQUE SPECIFICATIONS
 Part tightened NVm kgfVcm ftVlbf
 Engine block X Transmission 14 mm 37 380 27 
 17 mm
 
 72
 
 730
 
 53
 Rear mounting X Body 25 260 19
 Extension housing X Transmission case 36 370 27
 Valve body X Transmission case 10 100 7 
 Oil strainer
 
 10
 
 100
 
 7
 Oil pan 7.4 75 65 in.Vlbf
 No.1 vehicle speed sensor 16 160 12
 No.2 vehicle speed sensor 5.4 55 48 in.Vlbf 
 Solenoid wiring stopper plate
 
 5.4
 
 55
 
 48 in.Vlbf
 Rear center floor crossmember brace X Body 13 130 9
 Propeller shaft X Differential 79 805 58
 Manual shift linkage X Control shaft lever 13 130 9 Center support bearing X Body 49 500 36 
 Throttle cable X Transmission case
 
 5.4
 
 55
 
 48 in.Vlbf
 Cooler pipe union nut 34 350 25
 Drive plate X Crankshaft 74 750 54
 Torque converter clutch X Drive plate 33 340 25 
 Control shaft lever X Park/Neutral position switch
 
 16
 
 160
 
 12
 A/T fluid temp. sensor 15 150 11
 Drain plug 20 205 15
 Solenoid valve X Valve body 10 100 7 
 Parking lock pawl bracket
 
 7.4
 
 75
 
 65 in.Vlbf
 Transmission mounting bracket X Extension housing 25 250 18
 Heat insulator X Body 5.4 55 48 in.Vlbf
 Starter 37 380 27
AT1±98± AT340E (2JZ±GE) AUTOMATIC TRANSMISSIONSERVICE SPECIFICATIONS

5. REMOVAL OIL STRAINER
Remove the 3 bolts holding the oil strainer to the valve body.
Torque: 10 NVm (100 kgfVcm, 7 ftVlbf)
6. REMOVE SOLENOID WIRING
(a) Remove the 2 bolts and clamp.
(b) Disconnect the 5 connectors from the solenoid valves.
7. REMOVE VALVE BODY
(a) Remove the 20 bolts.
Torque: 10 NVm (100 kgfVcm, 7 ftVlbf)
INSTALLATION HINT: Each bolt length is indicated in the il-
lustration.
(b) Remove the valve body.
INSTALLATION HINT: Align the groove of the manual valve
to the pin of the lever.
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONON±VEHICLE REPAIRAT2±19

SHIFT LOCK SYSTEM
COMPONENT PARTS LOCATION
WIRING DIAGRAM
AT2±28± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONSHIFT LOCK SYSTEM

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

(*A= (E10), B= (E9))
 
 Terminals
 
 Symbols
 
 
Wiring
Color 
 Condition
 
 
Standard
Value
 A14 ± B69 TRC ± E1 O eBR Ignition switch ON 10 ± 14 V
 A13 ± B69 TRC± E1 W±R eBR Ignition switch ON 10 ± 14 V
 B12 ± B31 SLT±SLT LG±R eW±G Ignition switch ON 10 ± 14 V
 
A18 B69
 
ME1
 
GYeBR
 
IG ON
 Pattern select SW: MANU 10 ± 14 V
 A18 ± B69 M ± E1 G±Y eBR IG ON Pattern select SW: NORM Below 1 V 
A28 B69
 
OD2 E1
 
VGeBR
 
IG ON
 O/D main SW: ON 10 ± 14 V A28 ± B69 OD2 ± E1 V±G eBR IG ON O/D main SW: OFF Below 0.5 V A27 ± B69 EFI± E1 BeBR Ignition switch ON 10 ± 14 V A26 ± B69 EFI± E1 W eBR Ignition switch ON 10 ± 14 V
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±61

WIRING DIAGRAM CIRCUIT INSPECTION
DTC 38 A T Fluid Temperature Sensor Circuit
CIRCUIT DESCRIPTION
The fluid temp. sensor converts fluid temp. into resistance values which is input into the ECM.
 DTC No. Diagnostic Trouble Code Detection Condition Trouble Area
 
 
 
 
 
 
38
 
 
 
 
 
 
Either (a) or (b) are detected for 0.5 sec. or
more.
(a) Temp. sensor resistance less 79

(b) After the engine has been operating for 15
minutes or more, the resistance at the
temp. sensor is more than 156 k
 
 
 
 
 
 

Harness or connector between A/T fluid
temp. sensor and ECM

A/T fluid temp. sensor

ECM
AT2±70± 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