TROUBLESHOOTING
SERVICE MANUAL NUMBER 28
90-863160 MAY 2000 Page 1C-13
Power Trim Pump Motor Will Not Run In The OUT/UP Or IN/DOWN Direction
BOTH SOLENOIDS CLICK
Cause Special Instructions
Faulty solenoids or loose or corroded
connections.
Check for battery voltage at terminals
5 while trimming
OUT/UP. If no voltage is
indicated, check connections 2, 3,
4 and 5 and/or replace solenoids.
Pump motor brushes stuck, corroded
or worn out.
Clean or replace as required.
Armature commutator dirty. Clean or replace armature as required.
Armature faulty.
Test for shorted, open or grounded
condition and replace if needed.
Field and frame faulty.
Check for open or grounded condition.
Replace field and frame assembly if
needed.
Water or oil in motor. Replace motor assembly.
Pump gears frozen.
Replace pump valve body and gear
assembly.
Power trim pump harness or trim
control harness shorted between
OUT/UP and IN/DOWN circuit
(pump trying to run in OUT/UP and
IN/DOWN direction simultaneously).
Disconnect BLU/WHI lead from
solenoid terminal 8. If pump motor
will now run in the OUT/UP
direction, a short in the harness exists.
Repair or replace harness as needed.
Power Trim Pump Motor Runs In The OUT/UP Direction, But Not In The
IN/DOWN Direction
IN/DOWN SOLENOID DOES NOT CLICK
Cause Special Instructions
Loose or dirty solenoid connections. Check connections 6 and 7 and
clean and/or tighten as required.
Open IN/DOWN circuit in trim control
or pump wiring harness.
Check for battery voltage at terminal
6 while trimming OUT/UP. If no
voltage is indicated, check for a loose
or corroded OUT/UP circuit
connection, damaged OUT/UP
circuit lead or a faulty OUT/UP trim
switch. Repair or replace as required.
Solenoid faulty. Replace solenoid.
To Next Page
Loading...
Need help?
General