Yamaha WaveRunner VXR VX1800A, Service Manual

Page: 219 / 318

Ignition system
7-12
5. Disconnect the test harness, and then con-
nect the ignition coil couplers.
Pickup coil check
1. Disconnect the pickup coil coupler “a”, and
then connect the special service tool “1”.
2. Measure the pickup coil output peak volt-
age.
TIP:
• To crank the engine, connect the engine
shut-off cord to the engine shut-off switch,
and then push the engine start switch and
engine stop switch simultaneously.
• If measuring the pickup coil output peak volt-
age under the “Cranking” and “Unloaded”
conditions, disconnect the pickup coil coupler
(wire harness end) “b”.
3. Disconnect the special service tool.
4. Measure the pickup coil resistance. Re-
place the pickup coil if out of specification.
5. Connect the pickup coil coupler.
Output peak voltage
#1 Black/Red (B/R)—Black (B)
#2 Black/White (B/W)—Black (B)
#3 Black/Yellow (B/Y)—Black (B)
#4 Black/Green (B/G)—Black (B)
r/min
Loaded
Cranking 2000 3500
V 2.5 2.6 2.6
#1 B/R
#2 B/W
#3 B/Y
#4 B/G
R/Y
B
Test harness (2 pins) “1”
90890-06851
Output peak voltage
White (W)–Black (B)
r/min
Unloaded Loaded
Cranking 2000 3500
V 5.5 4.7 16.4 21.5
Resistance
459.0–561.0
Ω
White (W)–Black (B)
W/B
B/O
b a 1
B
W
B W
B
W
b 1 a
B
W