Toyota Celica 2005 Repair Manual page 1058

DTC
C0273/13, C0274/14
CIRCUIT DESCRIPTION
The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, ECU switches the
ABS motor relay ON and operates the ABS pump motor.
DTC No.
S IG1 terminal voltage is from 9.5 V to 18.5 V and the relay
contact OFF condition remains for 0.2 sec. or more, de-
spite turning the relay ON during the initial check or while
ABS is in operation.
C0273/13
S IG1 terminal voltage decreases in 9.5 V or less and the
relay contact OFF condition remains for 0.2 sec. or more,
despite turning the relay ON during the initial check or
while ABS is in operation.
The relay contact ON condition continues for 4 sec. when
C0274/14
the relay is OFF.
WIRING DIAGRAM
FL MAIN
Battery
2005 CELICA (RM1131U)
DIAGNOSTICS
DTC Detection Condition
1
B−R
2A
− ANTI−LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
ABS Motor Relay Circuit
S ABS actuator
S ABS motor relay
S ABS motor relay circuit
Engine Room J/B
ABS No. 1
ALT
1 2 1 2
W−B
EB
1057
Trouble Area
Skid Control ECU
with Actuator
2 23
B−R
2G S11
2
W−B
S11
24
W−B
S11
DI−857
DIAIK−04
+BM
GND1
GND2
F17700