1995 TOYOTA SUPRA Service Repair Manual

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Page 769 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DIAGNOSTIC TROUBLE CODE
Source voltage drop.
Duty ratio of 100% output to motor
acceleration side.
Voltage abnormality in control switch.
Short in control switch circuit.
Vehicle Speed Sensor Pulse is

Page 770 of 2543

TOYOTA SUPRA 1995 Service Repair Manual Diagnostic Trouble Code Clearance
1. After completing repairs the diagnostic trouble code retained
in memory can be cleared by removing the ECU±B fuse for
10 seconds or more, with the ignition switc

Diagnostic Trouble Code Clearance
1. After completing repairs the diagnostic trouble code retained
in memory can be cleared by removing the ECU±B fuse for
10 seconds or more, with the ignition switch off.
2. Check that the normal code is displayed after connecting the
fuse.
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the diagnostic trouble code check, check the circuit listed for that code
in the table below and proceed to the appropriate page.

Code No.

Circuit Inspection

Page

11, 14

Actuator Motor Circuit.

BE±171

12

Actuator Magnet Clutch Circuit.

BE±172

13

Actuator Motor Circuit
Actuator Position Sensor Circuit

BE±171
BE±175

14

Actuator Motor Circuit
Actuator Position Sensor Circuit

BE±171
BE±175

21

Speed Sensor Circuit

BE±177

23

Speed Sensor Circuit

BE±177

32, 34
Control Switch Circuit. (Cruise Control Switch)
BE±197
HINT:
1. If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart for
each circuit, proceed to the circuit with the next highest number in the table to continue check.
2. If the trouble still reappears even though there are no abnormalities in any of the other circuits, then check
or replace the cruise control ECU as the last step. BE±168
± BODY ELECTRICAL SYSTEM
CRUISE CONTROL SYSTEM

Page 771 of 2543

TOYOTA SUPRA 1995 Service Repair Manual INPUT SIGNAL CHECK
Output Code
1. (a) For check No.1 No.3
Turn the ignition switch on.
(b) For check No.4
Jack up the vehicle.
Start the engine.
2. Turn the control switch to SET/COAST position or

Page 772 of 2543

TOYOTA SUPRA 1995 Service Repair Manual IN±35BE±171BE±197BE±179BE±182BE±191BE±189BE±177BE±184BE±165IN±30
See page
Inspection Item
Problem
ªCRUISEº Indicator light blinks.
Cruise control system does not set.
Cruse control sys

Page 773 of 2543

TOYOTA SUPRA 1995 Service Repair Manual CIRCUIT INSPECTION
DTC 11 14 41 Actuator Motor Circuit
CIRCUIT DESCRIPTION
The actuator motor is operated by signals from the ECU. Acceleration and deceleration signals are
transmitted by changes in

Page 774 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (1)Remove cruise control actuator.
(2)Disconnect actuator connector.
(1)Connect positive (+) lead to terminal 5 and
negative (±) lead to terminal 4 of actuator connector.
(Magnet clutch ON)
(2)When b

Page 775 of 2543

TOYOTA SUPRA 1995 Service Repair Manual DTC 12 Actuator Magnet Clutch Circuit
CIRCUIT DESCRIPTION
This circuit turns on the magnet clutch inside the actuator during cruise control operation according to the signal
from the ECU. If a malfunc

Page 776 of 2543

TOYOTA SUPRA 1995 Service Repair Manual (See page IN±30)
(1) Connect positive lead to terminal 5 and negative
�lead to terminal 4 of actuator connector.
(2) Move the control plate by hand.
Replace stop light switch.
Repair or r

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