DTC 17

Codes 17 & 18: TRAC Motor Relay Circuit DTC Chart:

TRAC Motor Relay Circuit Wiring Diagram:

TRAC Motor Relay Circuit Inspection Procedure Part 1 Of 2:

TRAC Motor Relay Circuit Inspection Procedure Part 2 Of 2:

CIRCUIT DESCRIPTION
This relay circuit supplies power to the TRAC pump motor. If the accumulator pressure drops, the ECU switches the TRAC motor relay ON and operates the TRAC pump motor.

FAIL SAFE FUNCTION
If trouble occurs in this relay circuit, the ECU cuts off current to the TRAC solenoid relay and prohibits TRAC control operation.