ELECTRICAL
673831-Rev A 4-47
4
Symptom: Engine does not run.
Run Circuit
Symptom: Engine stops running when the parking brake is released.
Charging Circuit
Symptom: Battery not charging.
Probable Cause Remedy
Faulty fuel shutoff solenoid. Test fuel shutoff solenoid (SOL12). (See “Fuel Solenoid Test” on page 4-59.)
Faulty fuel solenoid pull-in circuit. Check continuity between starter (M1) terminal F and fuel solenoid (SOL12) terminal A.
Faulty fuel solenoid hold-in circuit Check continuity between MCU (U1) terminal 2-06 and fuel solenoid (SOL12) terminal B.
Faulty parking brake switch. Test parking brake switch (SW5). (See “Parking Brake Switch Test” on page 4-56.)
Faulty key switch. Test key switch (SW1). (See “Key Switch Test” on page 4-54.)
Faulty ignition relay Test ignition relay (K1). (See “Relays Test” on page 4-53.)
Probable Cause Remedy
Faulty seat switch. Test seat switch (SW4). (See “Seat Switch Test” on page 4-54.)
Faulty seat switch circuit. Check continuity between seat switch (SW4) terminal 2 and MCU (U1) terminal 4-01
Probable Cause Remedy
Faulty alternator output circuit. Make sure alternator output cable, starter cable and battery positive (+) cable terminals
are clean and tight.
Check continuity between 3-way distribution block and battery positive (+) terminal.
Continuity must be indicated.
Faulty battery ground circuit. Make sure battery negative (–) cable terminals are clean and tight.
Check continuity between battery negative (–) terminal and ground. Continuity must be
indicated.
Faulty battery. Check specific gravity of the individual battery cells.
Faulty alternator field circuit. Check continuity between ignition relay (K1) terminal 87 and alternator field terminal.
Continuity must be indicated.
Faulty alternator. Check alternator (See “Alternator” on page 4-75.)
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