SERVICE MANUAL NUMBER 28
TROUBLESHOOTING
Trim System Completely Inoperative In Manual Mode
AUTO MODE FUNCTIONS PROPERLY
Cause
Special Instructions
Check for voltage at terminal 26 with
mode switch in MANUAL mode. If no
voltage is indicated, replace switch.
Faulty mode switch.
Check leads 27 and 33 for loose or
corroded connections or damage.
Open circuit in wiring harness.
Pump Motor Will Run UP, But Not DOWN In Both Manual And Auto Modes
DOWN SOLENOID DOES NOT CLICK
Cause
Special Instructions
Loose or dirty solenoid connections.
Check connections 4, 7 and 12.
Check for voltage at terminal 12
while trimming Down (in MANUAL
mode). If no voltage is indicated,
repeat test at terminal 22 and 23. If
voltage exists at terminal 23, but not
at 22, switch is faulty. If voltage is
present at terminal 22, check leads
Faulty mode switch or open in DOWN
circuit.
3
and 48 and connector 47 for an
open condition.
Faulty DOWN solenoid.
Replace.
DOWN SOLENOID CLICKS
Cause
Special Instructions
Loose or dirty solenoid connections.
Check connections 10 and 11.
Check for voltage at terminal 11 while
trimming Down (in MANUAL mode). If
no voltage is indicated, replace
solenoid.
Faulty solenoid.
Faulty DOWN field winding.
Replace field and frame.
Pump Motor Runs DOWN, But Not UP In Both The Manual And Auto Modes
UP SOLENOID CLICKS
Cause
Special Instructions
Loose or dirty solenoid connections.
Check connections 5 and 6.
Check for voltage at terminal 6 while
trimming UP. If no voltage is
indicated, replace solenoid.
Faulty solenoid.
Faulty UP field winding.
Replace field and frame.
INDEX
90-863160
MAY 2000
Page 1C-25
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | MerCruiser Sterndrives 90-863160 |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(1 votes, average: 3 out of 3)
Marine readers have rated Mercury MerCruiser Bravo Outdrives Sterndrives Marine Engines Service Manual Number 28 3.0 out of 3.0 based on 1 product reviews. I could not find any mention of the seawater pump assembly.
Maybe I have the wrong unit