GENERAL SYSTEM DIAGNOSTICS
SERVICE MANUAL NUMBER 23
Chart A-7 (3 of 6): Ignition System Check (Continued)
Step
Action
Value(s)
Yes
No
Was the “On-Board Diagnostic”
1
(OBD)
Performed?
System
Check
-
Go to OBD
System Check
Go to Step 2
1.
Check spark plug wires for
open
circuits,
cracks
in
insulation, or improper seat-
ing of terminals at spark
plugs, distributor cap, and
coil tower before proceeding
with this table.
2.
3.
Disconnect 5-wire harness
connector (WHITE and PINK
wires).
Install a temporary jumper
wire between the 2 PINK
wires at the connector of the
boat harness. This is CkT 3
for the ignition circuit.
2
_
4.
Check tor secondary spark. If
there is “no spark” at one
wire, check a few more wires.
A few sparks and then noth-
ing is considered “no spark.”
Refer to Trou-
bleshooting
Section
Is Adequate Spark Present At
All Cylinders?
Go to Step 3
Go to Step 25
Remove distributor cap and
verify rotation of distributor rotor.
3
-
Is
The
Distributor
Rotor
Turning?
Go to Step 4
Index
Page 5E-86
90-861326--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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