Starting System Troubleshooting Chart - Mercury 25 EFI Service Manual

Charging and Starting System

Starting System Troubleshooting Chart

The following starting circuit troubleshooting chart will locate any malfunction. Location of test points called out in the chart are
numbered in the diagrams.
NOTE: Disconnect the black starter motor cable from starter solenoid at test point 1 before making tests 1 through 7 to prevent
unexpected engine cranking.
a
Tiller Handle Models
a - Battery
b - Fuse ‑ 20 ampere
c - Starter relay
d - Starter
e - Neutral start switch
f - Ignition key switch
a
DMT 2004 Digital Multimeter
Page 2B-38
c
6
BLK
b
RED
RED
c
6
BLK
b
RED
RED
© 2016 Mercury Marine
1
d
7
BLK
2
GRN GRN
GRN
4
3
GRN
RED
5
1
d
7
BLK
2
GRN
f
5
3
RED
91‑892647A01
e
f
23924
e
Remote Control Models
a - Battery
b - Fuse ‑ 20 ampere
c - Starter relay
d - Starter
e - Neutral start switch
f - Ignition key switch
4
23300
90-8M0105568 eng MARCH 2016