BAT/Brakes, ABS & TRAC Systems — Dtc 13 14 ABS Motor Relay Circuit, page 71

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.