
BR–71
BRAKE SYSTEM – ANTI–LOCK BRAKE SYSTEM (ABS)
DTC 13 14 ABS Motor Relay Circuit
CIRCUIT DESCRIPTION
The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, the ECU switches
the motor relay ON and operates the ABS pump motor.
DTC No. | Diagnostic Trouble Code Detecting Condition | Trouble area
13
Conditions (1) and (2) continue for 0.2 sec.
or more:
(1) ABS motor relay terminal (MR)
voltage: Battery positive voltage
(2) Motor relay monitor terminal (MT)
voltage: O V
ABS motor relay
Open or short in ABS motor relay circuit
ECU
14
Conditions (1) and (2) continue for 4 sec. or
more:
(1) ABS motor relay terminal (MR)
voltage: O V
(2) Motor relay monitor terminal (MT)
voltage: Battery positive voltage
ABS motor relay
B+ short in ABS motor relay circuit
ECU
Fail safe function: If trouble occurs in the motor relay circuit, the ECU cuts off the current to the solenoid relay
and prohibits ABS control.