1995 TOYOTA SUPRA Service Repair Manual

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Page 537 of 2543

TOYOTA SUPRA 1995 Service Repair Manual MANUAL SHIFTING TEST
HINT: With this test, it can be determined whether the trouble
is within the electrical circuit or is a mechanical problem in the
transmission.
1. DISCONNECT SOLENOID WIRE
2. IN

Page 538 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DTC.
No.Blinking
PatternCircuitDiagnostic Trouble Code Detection Condition
38
42
46
61
62
63
64
A/T fluid
temp.
sensor
No.1 vehicle
speed sensor
No.4 solenoid
valve
No.2 vehicle
speed sensor
No.1 sole

DTC.
No.Blinking
PatternCircuitDiagnostic Trouble Code Detection Condition
38
42
46
61
62
63
64
A/T fluid
temp.
sensor
No.1 vehicle
speed sensor
No.4 solenoid
valve
No.2 vehicle
speed sensor
No.1 solenoid
valve
No.2 solenoid
valve
No.3 solenoid
circuit
Either (a) or (b) are detected for 0.5 sec. or more:
(a) Temp. sensor resistance less than 79
(b) After the engine has been operating for 15 minutes or
more, the resistance at the temp. sensor is more
than 156 k
All conditions below are detected for 4 secs. or more:
(2 trip detection logic)*3
(a) No. No.1 vehicle speed sensor signal in 16 pulses of No.2
vehicle speed sensor signal
(b) Vehicle speed: 9 km/h (5.6 mph) or more for or more
(c) Park/neutral position switch: OFF (Other than P or N
position)
All conditions below are detected for 1 sec. or more:
(2 trip detection logic)*3
(a) ECM output duty signal to No.4 solenoid in 90% or higher
duty ratio
(b) Current to No.4 solenoid: 330+100 mA or less
All conditions below are detected:
(2 trip detection logic)*3
(a) No. No.2 vehicle speed sensor signal in 4 pulses of No.1
vehicle speed sensor signal
(b) Vehicle speed: 9 km/h (5.6 mph) or more for 4 secs. or
more
(c) Park/neutral position switch: OFF (Other than P or N
position)
(1) Solenoid resistance of 8 or less is detected (*) times or
more when NO.1 solenoid is energized.
(2) Solenoid resistance of 100 k or more is detected (*) 8 times
or more when No.1 solenoid is not energized.
(*) If the above failure are detected less than 8 times, the ECM
memorizes the malfunction code but the O/D OFF indicator
light does not blink.
(1) Solenoid resistance of 8 or less is detected (*) times or
more when NO.2 solenoid is energized.
(2) Solenoid resistance of 100 k or more is detected (*) 8 times
or more when No.2 solenoid is not energized.
(*) If the above failure are detected less than 8 times, the ECM
memorizes the malfunction code but the O/D OFF indicator
light does not blink.
All conditions below are detected for 1 sec. or more:
(2 trip detection logic)*3
(a) ECM output duty signal to No.3 solenoid in 90% or higher
duty ratio
(b) Current to No.3 solenoid: 450+100 mA or less
DIAGNOSTIC TROUBLE CODE CHART
If a diagnostic trouble code is displayed during the diagnostic trouble code check, check the circuit listed
for that code in the table below and proceed to the page given. AT2±54
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

Page 539 of 2543

TOYOTA SUPRA 1995 Service Repair Manual
Trouble Area

O/D OFF Indicator
Light *1Blinks

Memory *2

See
Page

Trouble Area

O/D OFF Indicator
Light *1Blinks

Memory *2

See
Page
Trouble Area
Light *1 Blinks
Memory
Page

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

AT2±70

Harness or connector between No.1 vehicle speed sensor and
ECM
No.1 vehicle speed sensor
Telltale light RH
ECM

AT2±72

Harness or connector between No.4 solenoid valve and ECM
No.4 solenoid valve

AT2±75

ECM

AT 2±75

Harness or connector between No.2 vehicle speed sensor and
ECM
No.2 vehicle speed sensor
ECM

AT2±79

Harness or connector between No.1 solenoid valve and ECM
No.1 solenoid valve
ECM

AT2±82

Harness or connector between No.2 solenoid valve and ECM
No.2 solenoid valve

AT2±82

ECM

AT 2±82

Harness or connector between No.3 solenoid valve and ECM
No.3 solenoid valve

X

AT 2 8 5
No.3 solenoid valve
ECM X AT2±85

± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±55

Page 540 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DTC.
No.Blinking
PatternCircuitDiagnostic Trouble Code Detection Condition
67
77
89
O/D direct
clutch speed
sensor
No.5 solenoid
circuit
TRAC ECU
circuit
All conditions below are detected for 4 secs.

Page 541 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Trouble Area O/D OFF Indicator
Light *1Blinks
Memory *2 See
Page Trouble Area

Page 542 of 2543

TOYOTA SUPRA 1995 Service Repair Manual *1: ºOº mark means ºO/D OFFº light blinks once every 2 seconds.
ºXº mark means ºO/D OFFº light never blinks.
*2: ºOº marks means the ECM memorizes the malfunction code if the ECM detects t

Page 543 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Memo
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±59

Page 544 of 2543

TOYOTA SUPRA 1995 Service Repair Manual STANDARD VALUE OF ECM TERMINAL
(*A= (E10), B= (E9))
Terminals Symbols Wiring
Color Condition Standard
Value

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

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