Jacobsen AR3, Technical/Repair Manual

Page: 111 / 342

4-54 4181384 First Edition
ELECTRICAL
4
Run Circuit
Symptom: Starter motor solenoid engages, but engine does not run.
Symptom: Engine stops running when leaving the seat.
Park Brake Circuit
Symptom: Park brake does not release.
Probable Cause Remedy
Brake release safety lever is in the
released position. Place the brake release lever in the engaged position.
Faulty brake release safety switch. Test switch. (See “Brake Safety Switch Test” on page 4-64.)
Faulty 12V fuel solenoid output circuit. With the key switch in the start position, measure voltage between the control module fuel
solenoid output terminal and ground. Voltage must be approximately 12 VDC.
Faulty control module. Substitute the control module with a known good control module.
Probable Cause Remedy
Park brake switch is in the released
position and/or mow switch is in the mow
position. Place the park brake switch in the locked position and the mow switch in the off position.
Probable Cause Remedy
Open 5A fuse F4. Test fuse. (See “Fuse Test” on page 4-61.)
Faulty park brake switch. Test switch. (See “Park Brake Switch Test” on page 4-67.)
Faulty brake solenoid. Test solenoid. (See “Solenoid Test” on page 4-68.)
Open brake solenoid switched power
circuit. Measure voltage between brake solenoid grn wire terminal and ground. Voltage must be
approximately 12 VDC.
Open park brake switch circuit. Check continuity between brake solenoid blu/yel wire terminal and park brake switch
terminal 4. Continuity must be indicated.
Open park brake switch ground circuit. Check continuity between park brake switch terminal 5 and ground. Continuity must be
indicated.