1 minute read
SYSTEM ／ Electric
・Parking brake switch is in "Neutral" position.
Current from the fuse ③ goes to:Terminal b of relay[1] → terminal e → terminal 1 of parking brake switch.
At the same time current from the fuse ① goes to:Terminal b of relay[4] → terminal e → parking monitor light → ground, parking monitor light stays on and parking brake is applied. (Traveling inhibitor circuit)
・Parking brake switch is operated in "OFF" position.
Current from fuse③ goes to:Terminal b of relay[1] →terminal e →terminal 1 of parking brake switch
→ terminal 2 → terminal 5.
Current from terminal 5 of parking brake switch goes to relay [3] and [4] separately.
One goes to: Terminal b of relay[3] → terminal e → parking brake solenoid → ground, then parking break is released. Another one goes to: Terminal c of relay[4] → coil → terminal g → ground, then parking monitor light turns off.
Another one goes to: Terminal c of relay[4] → coil → terminal g → ground, then parking monitor light turns off.
SYSTEM ／ Electric
(3)After resetting the parking brake switch to "OFF"(automatic return).
・Once the parking brake switch is set to "OFF", the relay[4] stays on by the current from fuse
・Parking brake switch is switched in "ON" position.
Current from terminal c of relay[4] goes to: Terminal 5 of parking brake switch → terminal 6 → terminal c of relay[3] → coil → ground, then relay[3] is switched from b-e to b-a. and parking brake is applied. At the same time, current from terminal c of relay[4] goes to: Terminal b of relay[3] → terminal a → parking monitor light turns on.
・Parking Brake Switch is switched from "ON" to "NEUTRAL".
Current for the coil of relay[3] is cut off, then parking monitor light turns off. At the same time, current from terminal c goes to:terminal b of relay[3] → terminal e → parking brake solenoid → ground, then parking brake is released .
