Specifications

Vehicle System System Operation 45
Trouble shooting of Operator Sensing System
CONDITION PROBABLE FAULT CORRECTIVE ACTION
1. Buzzer warning
2. Parking brake
light
1. Seat switch open
2. Parking brake switch open
3. Controller defect
4. Wiring defect
1. Check seat switch
2. Check parking brake switch
3. Check continuity of wire from seat switch to
controller (SW2)
4. Measure the voltage between
controller(SW2) and GND : 12V is no
problem
1. Seat belt
warning light
1. Seat switch open
2. Controller defect
3. Wiring defect
1. Check seat switch
2. Check continuity of wire from seat belt switch
to controller (SW3)
3. Measure the voltage between
controller(SW3) and GND : 12V is no
problem
1. Buzzer warning
2. Neutral light
3. No drive
operation
1. Seat switch open
2. Relay (REV/FWD/Creep
speed) defect
3. Directional switch defect
4. Wiring defect
5. FWD/REV Solenoid defect
6. Controller defect
1. Check seat switch
2. Check relay (REV/FWD/Creep speed)
3. Check FWD/REV Solenoid
4. Check continuity of wire from relay creeping
speed (85) to controller (C/RELAY)
5. Check continuity of wire from relay-
REV(86)or Dir SW(3) to controller (REW SW)
6. Check continuity of wire from relay-
FWD(86)or Dir SW(2) to controller (FWD
SW)
1. Buzzer warning
2. Water separator
warning light
1. Sediment switch short
2. Wiring defect
3. Controller defect
1. Check sediment switch
2. Check continuity of wire from sediment
switch to controller (AUX2)
3. Measure the voltage between
controller(AUX2) and GND : 12V is no
problem