1997 TOYOTA SUPRA check engine light

F03362
ABS ECU
Ts 8
*1*2
IJ1 DLC1
21 15
BR
EDTc E13
16
NORMAL ABS (2JZ-GE Engine)
SPORT ABS (2JZ-GTE Engine)
*1:
*2:
YY12 VA18A20
F00007lei-23-1-A
E1
Ts
DLC1
DI-496
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
724 Author
: Date
:
1997 SUPRA (RM502U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detected with
the DTC check.
Connecting terminals Ts and E1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminals Ts and E1 of DLC1.
OK:
Voltage: 10 - 14 V
OK If ABS warning light does not blink even after Ts
and E1 are connected, the ECU may be defec-
tive.
NG
DI4VN-01

DI4VR-01
W02267
F03365
ON
OFF0.5
sec.1.5
sec.
S-17-1F02201F03525
DLC2DLC1
E1
TcTcE1
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI-501
729 Author
: Date
:
1997 SUPRA (RM502U)
PRE-CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
When the ignition switch is turned ON, check that the
TRAC OFF indicator light goes on, and when the engine
is started, check that the TRAC OFF indicator light goes
off.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting for the TRAC OFF indicator light circuit (See page
DI-547).
(b) Check the DTC.
(1) Turn the ignition switch ON.
If the ECU stores DTC, the TRAC OFF indicator light blinks after
lighting up for 3 seconds.
The blinking pattern is shown on the left.
(2) Using SST, connect terminals Tc and E
1 of DLC2 or
DLC1.
SST 09843-18020

F03393
Trottle Conrol ECU
5V
5V EFIF
EFI+
EFI-
GE11 P
B
W
(Shielded) ECM
EFIF
EFI+
EFI-
T15
T1517
7
20
15
T15 67
E9
27
E10
26
E10 T15
DI-532
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
760 Author
: Date
:
1997 SUPRA (RM502U)
DTC 42 Engine Control System Malfunction
CIRCUIT DESCRIPTION
If trouble in the engine control system causes the malfunction indicator light to light up, this information is
transmitted from the ECM to the throttle control ECU. Then throttle control ECU may prohibit TRAC control
as a result.
DTC No.DTC Detecting ConditionTrouble Area
42ECM detected malfunction signal ON (output voltage at termi-
nal EFIF is 4.5 V or more, or 5.5 V or less for 1 sec. or more).
Wire harness and connector (EFIF circuit)

ECM

Throttle control ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check the DTC for the engine (See page DI-147).
*1 Repair engine control system according to the
code output.
*2
*1: Output NG code
*2: Malfunction indicator light remains ON
DI4W3-01

F03400
J/B No.1
GAUGE 12
Throttle Control
ECU
WA ABS
Warning Light
Y L
L
L
L ABS ECU
12V
WA5 11
A20
IF2T5
T161E 42
T5
12
- DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI-545
773 Author
: Date
:
1997 SUPRA (RM502U)
DTC 81 ABS Control System Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
81Engine speed is 500 rpm or more and ABS warning light is ON
for 12 sec. or more.
Wire harness and connector (WA circuit)

ABS ECU

Throttle control ECU
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check the DTC for the ABS (See page DI-501).
*1 Repair ABS control system according to the
code output.
*2
*1: Output NG code
*2: Malfunction indicator light remains ON
DI4W8-01

DI4WW-01
THEFT DETERRENT SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date of VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor temperature
/ /

Constant
Sometimes ( Times per day, month)

Once only Brought in

Theft deterrent system cannot be set.

Indicator light does not flash when the theft deterrent system is set.
(It stays on or does not light at all.)

Theft deterrent system
does not operate.
When unlocked using the
door lock knob.

When the engine hood is
opened.

System cannot be
canceled once set.
When door is unlocked using key or wireless door lock control system.

When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.
(However, only when the system has never operated)

When the luggage compartment door is opened with the key.

System cannot be
canceled during warning
operation.
When door is unlocked using key or wireless door lock control system.

When the key is inserted in the ignition key cylinder and turned to ACC or ON
position.

Warning operation starts when the system is set and the door or luggage compartment door is opened with
the key.

Others.
Date Problem First Occurred

Fine
Cloudy
Rainy
Snowy

Various/Others

Hot
Warm
Cool

Cold (Approx. 5F ( 5C))
Problem Symptom
Malfunction

Horns only

Theft deterrent horn only

Headlights only

Taillights only

Starter cut only

Door lock operation only
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-609
837 Author
: Date
:
1997 SUPRA (RM502U)
CUSTOMER PROBLEM ANALYSIS CHECK

DI4WX-01
DI-610
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
838 Author
: Date
:
1997 SUPRA (RM502U)
PRE-CHECK
1. Setting Conditions:
SETTING OF THE THEFT DETERRENT SYSTEM
(a) Close all the doors.
(b) Close the engine hood and luggage compartment door.
(c) Remove the ignition key from the ignition key cylinder.
2. Setting Operation:
SETTING OF THE THEFT DETERRENT SYSTEM
When any of the following operations (a) or (c) is done, the theft deterrent indicator light will light up as de-
scribed.
(1) Lock the left or right front door using the key. (All doors are locked by key-interlinked lock opera-
tion)
(2) With the rear doors locked and with one of the front doors locked, lock the other front door without
using the key (keyless door lock).
Elapsed time after operationIndicator light
Within about 30 secondsLight up
After about 30 secondsBlinks *1
*1: 1 sec. on, 1 sec. off
HINT:
When the theft deterrent system is set, doors cannot be locked or unlocked with the door lock control switch
and the luggage compartment door cannot be unlocked with the luggage compartment door opener switch.
3. Cancelling Operation:
CANCELING OF THE THEFT DETERRENT SYSTEM IN THE SET CONDITION
HINT:

Check if the theft deterrent indicator light is blinking.

When any of the following operation (a), (b), (c) or (d) is done, the theft deterrent system is canceled
and indicator light will go off.
(a) Unlock the left or right front door using the key.
(b) Insert the ignition key in the ignition key cylinder and turn it to the ACC or ON position. (This is operative
only when the theft deterrent system has never operated.)
(c) Unlock the luggage compartment door with the key. *
1
*1: The theft deterrent systems is temporarily canceled only while the luggage compartment door is open.
Approximately 2 seconds after the luggage compartment door is closed, the theft deterrent system is reset.

N09348
TOYOTA
hand-held tester
TOYOTA
break-out-boxECU
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-61 1
839 Author
: Date
:
1997 SUPRA (RM502U)
4. CHECK OF THE THEFT DETERRENT SYSTEM OPERATION.
HINT:
Check if the theft deterrent indicator light is blinking.
When any of the following operations (a) or (b) is done, the system sounds the horns as theft deterrent horn
and flashes the headlights and taillights for about one minute to alert. At the same time, the system discon-
nects the starter motor circuit and locks all doors (if all doors are not locked, the system repeats door locking
operation every 2 seconds during the one minute alert time).
(a) Open the engine hood using the engine hood opener lever.
(b) Unlock any of the front or rear doors without key operation.
5. CANCELING OF THE THEFT DETERRENT SYSTEM IN OPERATING CONDITION.
The theft deterrent operation can be cancelled when any of the following conditions is met:
No.ConditionCancelling Operation
1Unlock left or right door with the key.
2Unlock doors with wireless door lock control system.
3Insert key into ignition key cylinder and turn it to the ACC or ON position.*2
4About 1 minute passes after theft deterrent operation begins.Automatic stop*1
*1: In this case, the theft deterrent system resets in about 2 seconds if all doors are closed.
*
2: The alarm will be off, but the engine will not operate. To restart the engine, see No.1
6. ECU TERMINAL VALUES MEASUREMENT USING
TOYOTA BRAKE-OUT-BOX AND TOYOTA HAND-
HElD TESTER
(a) Hook up the TOYOTA brake- out- box and TOYOTA
hand-held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the hand-held tester screen.
HINT:
TOYOTA hand-held tester has a ºSnapshotº function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand-held tester/TOYOTA break-
out-box operator's manual for further details.

BE6443
(1)
(2)
(1)
No.
Operation MethodCRUISE MAIN Indicator Light
Blinking PatternDiagnosis
1
3
4
2Turn SET/COAST switch ON
Turn RES/ACC switch ON
Drive at about 40 km/h
(25 mph) or below Turn CANCEL switch ON
Turn stop light switch ON
Depress brake pedal
Turn PNP switch OFF
(Shift to except D position)
Turn clutch switch OFF
(Depress clutch pedal)
Drive at about 40 km/h
(25 mph) or higherSET / COAST switch
circuit is normal
RES / ACC switch circuit
is normal
PNP switch circuit is normal CANCEL switch circuit
is normal
Clutch switch circuit is normal
Vehicle Speed Sensor is
normal
Stop light switch circuit
is normal ON
OFF
0.25 sec.
0.25 sec.
1 sec.Light
ON
OFFLight
ON
OFF Light
ON
OFF Light
ON
OFF Light
ON
OFF Light
Switch OFF
Switch ON
Switch ON
Switch OFF DI-666
- DIAGNOSTICSCRUISE CONTROL SYSTEM
894 Author
: Date
:
1997 SUPRA (RM502U)
5. Using TOYOTA hand-held tester:
INPUT SIGNAL CHECK
HINT:
(1) For check No.1 - No.2

Turn the ignition switch ON.
(2) For check No.3

Turn ignition switch ON.

Shift to D position.
(3) For check No.4

Jack up the vehicle.

Start the engine.

Shift to D position.
(a) Press the control switch to SET/COAST or RES/ACC
position and hold it down or hold it up º1º.
(b) Push the main switch ON º2º.
(c) Check that the CRUISE MAIN indicator light blinks twice
or 3 times repeatedly after 3 seconds.
(d) Turn the SET/COAST or RES/ACC switch OFF.
(e) Operate each switch as listed in the table below.
(f) Read the blinking pattern of the CRUISE MAIN indicator
light.
(g) After performing the check, turn the main switch OFF.
HINT:
When 2 or more signals are input to the ECU, the lowest num-
bered code will be displayed first.