Mercury 45 Jet 50-55 Service Manual page 57

No voltage reading;
proceed to TEST 3.
TEST 3
a. Reconnect black ground wire(s).
b. Connect voltmeter between common engine ground and Test Point 3.
c. Turn ignition key to "Start" position.
No voltage reading;
proceed to TEST 4.
No voltage reading;
proceed to TEST 5.
No voltage reading;
proceed to TEST 6.
No voltage reading; check red wire between
battery (+) positive terminal and Test Point 6.
No voltage reading; De-
fective starter solenoid.
No voltage reading; check black cable
for poor connection or open circuit.
2B-14 - ELECTRICAL and IGNITION
TEST 2
a. Disconnect black ground wire(s) from Test Point 2.
b. Connect voltmeter between common engine ground and Test Point 2.
c. Turn ignition key to "Start" position.
12 Volt Reading
Defective starter solenoid.
TEST 4
a. Connect voltmeter between common
engine ground and Test Point 4.
b. Turn ignition key to "Start" position.
TEST 5
Connect voltmeter between common
engine ground and Test Point 5.
TEST 6
Connect voltmeter between common engine ground and Test Point 6.
TEST 7
a. Connect voltmeter between common engine ground and Test Point 1.
b. Turn ignition key to "Start" position.
TEST 8
a. Reconnect black (starter motor) cable to starter solenoid Test Point 1.
b. Connect voltmeter between common engine ground and Test Point 7
c. Turn ignition key to "Start" position.
12 Volt Reading*
Check black ground wire for poor connection or
open circuit. Reconnect ground wire to starter
solenoid; proceed to TEST 7.
12 Volt Reading*
Neutral start switch is open, or yellow/red wire
is open between Test Points 4 and 3.
12 Volt Reading*
Defective ignition switch.
12 Volt Reading*
Check fuse in red wire between test points 5 and 6.
Check for open red wire between test points 5 and 6.
12 Volt Reading*
Should hear solenoid click; proceed to TEST 8.
12 Volt Reading*
Check black ground cable at starter for loose
or corroded connection, or open circuit. If
cable is O.K., check starter motor.
90-817643R1 DECEMBER 1996
* Battery Voltage