TROUBLESHOOTING
SERVICE MANUAL NUMBER 28
Pump Motor Will Run DOWN, But Not UP In Auto Mode
MANUAL MODE FUNCTIONS PROPERLY
Cause
Special Instructions
Open circuit in control module sense
lead.
Check lead 17 for loose or corroded
connections or damage.
Faulty control module.
Replace.
Pump Motor Will Run UP, But Not DOWN In Auto Mode
MANUAL MODE FUNCTIONS PROPERLY
Cause
Special Instructions
Check for voltage at terminal 21 and
while turning ignition switch to
22
Faulty mode switch.
RUN position (in AUTO mode). If
voltage exists at 21 but not at 22,
switch is faulty.
Check lead 19 for a loose or
corroded connection or damage.
Open circuit in wiring.
Faulty control module.
Replace.
Trim DOWN/IN Switch Inoperative In Manual Trim Control
TRIM UP/OUT SWITCH AND TRAILER SWITCH FUNCTION, AUTO MODE FUNCTIONS
PROPERLY
Cause
Special Instructions
Check for voltage at terminal 38
while trimming DOWN (in MANUAL
mode). If no voltage is indicated,
switch is faulty.
Faulty DOWN switch in manual trim
control.
Check for voltage at terminal 23
while trimming DOWN. If no voltage is
present, check leads 28 and 34 for
a loose or corroded connection or
damage.
Open circuit in wiring harness.
Faulty mode switch.
Check for voltage at terminal 22
while trimming DOWN. If no voltage
exists, switch is faulty.
INDEX
Page 1C-26
90-863160 MAY 2000
| 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