Mariner 30 JET 40 (4 CYL) Service Manual page 33

Ignition Troubleshooting
(Engines With Red Stator)
STEP 1 – Primary Voltage At The
Ignition Coils Test
(+)
DCV
ACV
a
DVA
(–)
b
a - Connect (+) Test Lead To (+) Coil Terminal
b - Connect (–) Test Lead To (–) Coil Terminal
1. Use Multimeter / DVA Tester 91-99750. Set
switch position to – 400 DVA.
2. Crank engine and observe meter reading.
Voltage at 300 RPM
(cranking)
130 Volts
TEST RESULTS
Voltage output is high on all coils. The adapter
module is defective. Replace adapter module.
No voltage output or low voltage output on all
coils. Go to STEP 5 – Stator, Adapter Module,
and Switch Box Test.
Good voltage on two coils. Go to Trigger Test.
Good voltage on all coils. Go to Testing For
Spark.
90-814676R1 DECEMBER 1996
Voltage at 1000 – 4000
RPM (Running)
195 to 275 Volts
STEP 2 – Stop Circuit Test
DCV ACV
DVA
a
b
a - Connect (+) Test Lead To BLK/YEL Wire Terminal On
Switch Box
b - Connect (–) Test Lead To Engine Ground
1. Use Multimeter / DVA Tester 91-99750. Set
switch position to – 400 DVA.
2. Crank engine and observe meter reading.
Voltage at 300 RPM
(cranking)
190 Volts
TEST RESULTS
Voltage output is high. The adapter module is de-
fective. Replace adapter module.
Good voltage output. Go to STEP 3 – Switch Box
(BLU Wire) Circuit Test.
No voltage output or low voltage output. Remove
BLK/YEL wires from switch box terminal and re-
peat test. If voltage output is now OK, either the
ignition switch, stop switch or wiring is defective.
If no voltage or low voltage remains, go to STEP
5 – Stator, Adapter Module, and Switch Box Test.
ELECTRICAL AND IGNITION - 2A-7
BLK/
YEL
Voltage at 1000 – 4000
RPM (Running)
275 to 320 Volts