Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 509 / 1976

I03207
Cruise Control ECU
2 1
3
4
3
STOP Fuse
8
Stop Light Switch
4
Stop Lights
Cruise Control Actuator
Actuator Magnetic Clutch
IG
W-B
10
22
J/B No.3
8
G-B
3C
3
IK3
R-B
L C15
R-B
IK3
W-B
3C
W-B
- DIAGNOSTICS CRUISE CONTROL SYSTEM
DI-575
729
Author: Date:
2001 SIENNA (RM787U)
DTC 12 Actuator 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 stop light switch turns on, supplying electrical power to the stop light.
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 (9 mph), the ECU turns the
safety magnet clutch OFF. If the vehicle speed later drops to within 10 km/h (6 mph) above the set speed,
then cruise control at the set speed is resumed.
DTC No. Detection Item Trouble Area
12
Short in actuator magnetic clutch circuit.
Open (0.8 sec.) in actuator magnetic clutch circuit.
STOP Fuse
Stop light switch
Actuator magnetic clutch
Harness or connector between cruise control ECU and
actuator magnetic clutch, actuator magnetic clutch and body
ground
Cruise control ECU
WIRING DIAGRAM
DI08N-23