Service manual

TROUBLESHOOTING
SERVICE MANUAL NUMBER 28
90-863160 MAY 2000 Page 1C-27
Trim UP/OUT Switch Inoperative In Manual Trim Control
TRIM DOWN/IN SWITCH FUNCTIONS, AUTO MODE FUNCTIONS PROPERLY
Cause Special Instructions
Trim 20 amp fuse “43” blown (if
equipped).
Determine cause for blown fuse and
correct before replacing fuse.
Open in power supply lead to trim and
trailer switch.
Check voltage at terminal 44. If no
voltage is indicated, check lead 45
for a poor connection or damage.
Faulty trim UP/OUT switch (applies
only to trim controls where it is
necessary to actuate trim UP switch in
order for trailer switch to function).
Check for voltage at terminal 40
while actuating trim UP/OUT switch.
Replace switch if no voltage is
indicated.
Trailer Switch In Manual, Trim Control Inoperative
TRIM UP/OUT SWITCH FUNCTIONS
Cause Special Instructions
Faulty trailer switch.
Check for voltage at terminal 41 and
42 while actuating trailer switch. If
voltage exists at terminal 42, but not
at terminal 41, a faulty switch is
indicated. If no voltage exists at
terminal 42, check power supply lead
for an opening.
Opening in wiring.
Check lead 39 for damage or a
loosened or corroded connection.
Boat Is On Plane Well Before Drive Unit Begins To Trim Out
Cause Special Instructions
Control module adjustment incorrect. Adjust. (Refer to SECTION 5)
Faulty control module. Replace control module.
Boat Is Not On Plane Before Drive Unit Begins To Trim Out
Cause Special Instructions
Control module adjustment incorrect. Adjust. (Refer to SECTION 5)
Faulty control module. Replace control module.
INDEX