Pump Motor Will Not Stop Running Down In Auto Mode; Pump Motor Will Not Run Up Or Down In Auto Mode - Mercury BRAVO Service Manual

TROUBLESHOOTING

Pump Motor Will Not Stop Running Down In Auto Mode

TRIM UP/OUT SWITCH AND TRAILER SWITCH INOPERATIVE IN MANUAL MODE
NOTE:An internal timer in the control module stops the pump motor 50 seconds after this
problem condition occurs.
Loose or dirty solenoid connection.
Faulty solenoid.
Loose or corroded trim limit switch
lead connections.
Faulty trim limit switch.
Open circuit in wiring harness.
Faulty control module.

Pump Motor Will Not Run Up Or Down In Auto Mode

MANUAL MODE FUNCTIONS PROPERLY
Control module 20 amp fuse blown.
Open in control module battery cables
or wiring harness.
Faulty mode switch.
Faulty control module.
Page 1C-24
Cause
Cause
SERVICE MANUAL NUMBER 28
Special Instructions
Check connections 7
Check for voltage at terminal
trimming UP (in MANUAL mode). If
voltage exists, an open condition in
solenoid is indicated and solenoid
must be replaced. If no voltage is
indicated, refer to steps 3 through 6
following.
Check connections 32
Disconnect trim limit switch leads
and 36 and connect a continuity
meter between leads. Continuity
should exist with drive unit in DOWN
position. If not, readjust or replace
switch as necessary.
Check leads 30, 35, 46
for loose or corroded connections or
damage.
Replace.
Special Instructions
Determine cause for blown fuse and
correct before replacing fuse.
Check cables 16 and
20.
Check for voltage at terminal
25 with switch in AUTO mode. If
voltage exists at terminal 25, but not
24, switch is faulty.
Replace.
and 8.
8 while
and 36.
32
and 2
18 and lead
24 and
90-863160 MAY 2000