1997 TOYOTA SUPRA brake
[x] Cancel search: brakePage 902 of 1807
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.
Page 952 of 1807
DI4XK-01
CRUISE CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date of VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Condition of
Problem Occurrence
Date of Problem
How Often does
Occurrence
Problem Occur?
Vehicle Speed when
Problem Occurred / /
Continuous Intermittent ( Times a day)
km
Mile Brought in
Auto cancel
occurs Driving condition
City driving Freeway Up hill Down hill
After cancel occurred, did the driver activate cruise control
again?
Yes No
Cancel does not
occur With brake ON
Except D position shift
When control SW turns to CANCEL position
Cruise control
malfunction Slip to acceleration side
Slip to deceleration side
Hunting occurs
O/D cut off does not occur
O/D does not return
Switch
malfunction SET ACCEL COAST RESUME CANCEL
Remains ON Does not light up Blinking Symptoms
DTC Check1st Time2nd Time
Normal Code Malfunction Code (Code )
Normal Code Malfunction Code (Code )
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-661
889 Author: Date:
1997 SUPRA (RM502U)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 954 of 1807
BE4032
BE4033I00021
0.25 sec.
0.25 sec. Normal Code
Malfunction codes 11 and 21
4 sec.0.5 sec.
1.5 sec.
1.5 sec. 0.5 sec.
2.5 sec.
ON
OFF
Code 11 Code 21 ON
OFF
N09348
TOYOTA Hand-Held Tester
TOYOTA Break-out-box
N09001DOME Fuse
R/B No.2
I02735
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-663
891 Author: Date:
1997 SUPRA (RM502U)
HINT:
If the DTC is not output, inspect the diagnosis circuit (See
page DI-708).
As an example, the blinking patterns for codes; normal,
11 and 21 are shown in the illustration.
2. ECU TERMINAL VALUES MEASUREMENT BY USING
TOYOTA BRAKE-OUT-BOX AND TOYOTA HAND-
HELD TESTER
(a) Hook up the TOYOTA break- out- box and TOYOTA
hand-held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the tester screen.
(c) Please refer to the TOYOTA hand-held tester has a
ºSnapshotº function. This records the measured data and
is effective in the diagnosis of intermittent problems.
3. DTC CLEARANCE
(a) After completing repairs, the DTC retained in memory can
be cleared by removing the DOME fuse for 10 seconds or
more, with the ignition switch off.
(b) Check that the normal code is displayed after connecting
the fuse.
4. PROBLEM SYMPTOM CONFIRMATION (Road Test)
(a) Inspection the SET switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) After releasing the switch, check that the vehicle
cruises at the desired speed.
Page 956 of 1807
I02735
I02735
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-665
893 Author: Date:
1997 SUPRA (RM502U)
(d) Inspect the CANCEL switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.
Depress the brake pedal
Depress the clutch pedal (M/T)
Shift to except D position (A/T)
Turn the main switch OFF
Pull the cruise control switch to CANCEL
(e) Inspect the RESUME switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.
Depress the brake pedal
Depress the clutch pedal (M/T)
Shift to except D position (A/T)
Turn the main switch OFF
Pull the cruise control switch to CANCEL
(4) After the control switch is turned to RES/ACC at the
driving speed of more than 40 km/h (25 mph), check
that the vehicle restores the speed prior to the can-
cellation.
Page 957 of 1807
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.
Page 960 of 1807
DI4XO-01
I04621
C16
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-669
897 Author: Date:
1997 SUPRA (RM502U)
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
D e GNDGRWB
M/T: Depress clutch pedal
A/T: Shift to except D positionBelow 1 VD e GND
(C16-2 eC16-13)G-R e W-BM/T: Release clutch pedal
A/T: Shift to D position10 - 16 V
PI e GNDOWB
Ignition switch ON
Cruise control main switch ONBelow 1.2 VPI e GND
(C16-7 eC16-13)O e W-BIgnition switch ON
Cruise control main switch OFF10 - 16 V
TCGNDIgnition switch ON10 - 16 VTC e GND
(C16-8 eC16-13)R e W-BIgnition switch ON
Connect terminals TC and E
1 of DLC1Below 1 V
OD e GNDLG BWB
During cruise control driving
OD switch ON10 - 16 VOD e GND
(C16-9 eC16-13)LG-B e W-BDuring cruise control driving
OD switch OFF (3rd driving)Below 1 V
L e GNDBWWBDuring cruise control driving9 - 15 VL e GND
(C16-10 eC16-13)B-W e W-BExcept during cruise control drivingBelow 1 V
MC e GNDGRWB
During cruise control driving
COAST switch hold ON9 - 15 VMC e GND
(C16-1 1 eC16-13)G-R e W-BDuring cruise control driving
ACC switch hold ONBelow 1 V
MO e GNDLGWB
During cruise control driving
ACC switch hold ON9 - 15 VMO e GND
(C16-12 eC16-13)LG e W-BDuring cruise control driving
COAST switch hold ONBelow 1 V
GND e Body Ground
(C16-13 eBody Ground)W-B e Body
GroundConstantBelow 1 V
B e GND
(C16-14 eC16-13)B-R e W-BIgnition switch ON10 - 16 V
BATT e GND
(C16-15 eC16-13)W-R e W-BConstant10 - 16 V
STP e GNDG-W e W-BDepress brake pedal10 - 16 VSTP e GND
(C16-16 eC16-13)G-W e W-BRelease brake pedalBelow 1 V
Page 962 of 1807
DI4XP-01
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-671
899 Author: Date:
1997 SUPRA (RM502U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Cruise control system does not set.
Cruise control system does not operate.
Input signal check No.4: OK
1. ECU Power Source Circuit
2. Wire Harness
3. Main Switch Circuit
4. Control Switch Circuit
5. Stop Light Switch Circuit
6. PNP Switch or Clutch Switch Circuit
7. Actuator Control Cable
8. Actuator Motor Circuit
9. Cruise Control ECU
Input signal check No.4: NG
1. Vehicle Speed Sensor Circuit
2. Cruise Control ECU
DI-699
DI-704
DI-682
DI-687
DI-694,
DI-697
DI-710
DI-673
IN-28
DI-679
IIN-28
Indicator light does not light up.
1. Wire Harness
2. CRUISE MAIN Indicator Light Circuit
3. Cruise Control ECU
DI-706
IIN-28
Vehicle speed drop when the cruise control switch turned to SET.
1. Actuator Control Cable
2. ECU Power Source Circuit
3. Idle Signal Circuit
4. Actuator Motor Circuit
5. Cruise Control ECUDI-710
DI-699
DI-685
DI-673
IN-28
Set speed deviates on high or low side.
Input signal check No.4: OK
1. Vehicle Speed Sensor Circuit
2. Actuator Control Cable
3. ECU Power Source Circuit
4. Actuator Motor Circuit
5. Cruise Control ECU
Input signal check No.4: NG
1. Cruise Control ECU
DI-679
DI-710
DI-699
DI-673
IN-28
IN-28
Vehicle speed fluctuates when cruise control switch turn to SET.
1. Vehicle Speed Sensor Circuit
2. Actuator Control Cable
3. Idle Signal Circuit
4. ECT Communication Circuit
5. Actuator Motor Circuit
6. Cruise Control ECUDI-679
DI-710
DI-685
DI-690
DI-673
IN-28
Acceleration response is sluggish when cruise control switch turn
to ºACCELº or ºRESUMEº.
Input signal check No.4: OK
1. Actuator Control Cable
2. Vehicle Speed Sensor Circuit
3. Actuator Motor Circuit
4. Cruise Control ECU
Input signal check No.4: NG
1. Control Switch Circuit
2. Cruise Control ECU
DI-673
DI-679
DI-710
IN-28
DI-682
IN-28
Set speed does not cancel when brake pedal depressed.
Input signal check No.3: OK
1. Cruise Control ECU
Input signal check No.3: NG
1. Stop Light Switch Circuit
2. Cruise Control ECU
IN-28
DI-687
IIN-28
Cruise control does not cancel when transmission is shifted to
except D position. (A/T)
Input signal check No.3: OK
1. Cruise Control ECU
Input signal check No.3: NG
1. PNP Switch Circuit
2. Cruise Control ECU
IIN-28
DI-694
IN-28
Page 966 of 1807
I02715
Cruise Control Actuator
Magnetic ClutchGND4
C4
C43
LBR-Y
R-L17
IB6
8
IB6W-B
R-L
Battery
STOP10
1I
J/B No.1WCruise Control ECU
13
43
21 S11
S11S11
S11
Stop Light SwitchB-W
G-W G-WC16
C16
C1610
16
To Light Failure SensorGND
L
STP-
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-675
903 Author: Date:
1997 SUPRA (RM502U)
DTC 12 Magnetic Clutch Circuit
CIRCUIT DESCRIPTION
This circuit turns on the magnetic clutch inside the actuator during cruise control operation according to the
signal from the ECU. If a malfunction occurs in the actuator or speed sensor, etc. during cruise control opera-
tion, the rotor shaft between the motor and control plate is released.
When the brake pedal is depressed, the stoplight switch turns on, supplying electrical power to the stoplight.
Power supply to the magnetic clutch is mechanically cut and the magnetic clutch is turned OFF.
When driving downhill, if the vehicle speed exceeds the set speed by 15 km/h (6 mph) above the set speed,
then cruise control at the set speed is resumed.
DTC No.Detection ItemTrouble Area
12Short in magnetic clutch circuit
Open (0.8 sec.) in magnetic clutch circuit
Cruise contorl actuator magnetic clutch
Harness or connector between ECU and magnetic clutch,
magnetic clutch and body ground
Cruise control ECU
WIRING DIAGRAM
DI4XR-01