Trouble Code And Checking Step - SELVA MARINE Blue Whale 250 EFI Service Manual

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Trouble code and checking step

Trouble
Item
code
Crank position
sensor
13
(pulser coil in
YDIS)
Engine
temperature
15
sensor
malfunction
Knock sensor
17
malfunction
Battery voltage
19
malfunction
Intake air
temperature
23
sensor
malfunction
*1: See the wiring diagram.
9-7
Troubleshooting
Symptom
Remarks
Trolling speed
H
is unstable
D
Maximum
C power
decreases
C
C
1. Measure the crank position sen-
sor resistance.
2. Check the white/black (W/B)
lead and black (B) lead (ECM-to-
crank position sensor) for conti-
nuity.
3. Measure the crank position sen-
sor output peak voltage.
4. Measure the crank position sen-
sor air gap.
5. Check the projections of the fly-
wheel magnet for damage.
1. Check the engine temperature
using the YDIS.
—
2. Measure the input voltage.
3. Measure the resistance.
1. Measure the resistance.
2. Check the green (G) lead (ECM-
to-knock sensor) for continuity.
1. Check the battery voltage using
the YDIS.
2. Measure the Rectifier Regulator
output peak voltage.
— 3. Measure the stator coil output
peak voltage.
4. Check the fuse.
5. Check the battery cables and
terminals for proper connection.
1. Check the intake air temperature
using the YDIS.
—
2. Measure the input voltage.
3. Measure the resistance.
Checking steps
Refer
to
page
8-15
*1
8-15
8-16
5-7
9-1
8-18
8-18
8-20
*1
9-1
8-38
8-38
8-5
3-15
9-1
8-16
8-16
6P23H11