Toyota Celica 2005 Repair Manual page 1253

DI−1052
DTC 12, 43
CIRCUIT DESCRIPTION
This circuit turns on the magnetic clutch inside the actuator during the cruise control operation according
to the signal from the ECU. If a malfunction occurs in the actuator or speed sensor, etc. during the cruise
control operation, the rotor shaft between the motor and control plate is released.
When the brake pedal is depressed, the stop light switch is turned on and the power supply to the magnetic
clutch is mechanically cut, and therefore 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 by 10 km/h (6 mph) from that speed, cruise control
at the set speed is resumed.
DTC No.
Short in actuator magnetic clutch circuit.
12, 43
Open (0.8 sec.) in actuator magnetic clutch circuit.
2005 CELICA (RM1131U)
DIAGNOSTICS
Actuator Magnetic Clutch Circuit
Detection Item
1252
− CRUISE CONTROL SYSTEM (1ZZ−FE)
S STOP Fuse
S Stop light switch
S Actuator magnetic clutch
S Harness or connector between cruise control ECU and actua-
tor magnetic clutch, actuator magnetic clutch and body
ground
S Cruise control ECU
Trouble Area
DI08N−32