Mariner 70 Service Manual page 51

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 be-
tween battery (+) positive terminal and Test
Point 6.
TEST 7
a - Connect voltmeter between common engine ground and Test Point 1.
b - Turn ignition key to "Start" position.
No voltage reading;
Defective starter solenoid.
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.
No voltage reading; check BLACK cable for
poor connection or open circuit.
* Battery Voltage
2B-20
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.
ELECTRICAL AND IGNITION
12 Volt Reading*
Check BLACK ground wire for
poor connection or open circuit.
Reconnect ground wire to start-
er 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 cor-
roded connection, or open circuit. If cable is OK, check
starter motor.
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