SELVA MARINE Blue Whale 250 EFI Service Manual page 354

TRBL
SHTG
Trouble
Item
code
Oil pressure
39 sensor
malfunction
Engine stop
44 lanyard switch
malfunction
Shift cut switch
45
malfunction
Thermoswitch
46
malfunction
*1: See the wiring diagram.
9-9
Troubleshooting
Symptom
Remarks
C
Engine stalls
(when running
K engine)
Buzzer comes
on
Shifting to
C neutral is
difficult
C
1. Check the engine oil pressure
using the YDIS.
2. Measure the input voltage.
3. Measure the output voltage.
—
4. Check the pink/white (P/W) lead
(ECM-to-oil pressure sensor) for
continuity.
5. Check the oil pressure using an
oil pressure gauge.
1. Check
using the YDIS.
2. Check the clip.
3. Check the switch continuity.
4. Check the white (W) lead (ECM-
to-10-pin main harness coupler)
for continuity.
5. Check the black (B) lead (10-pin
main
connector-to-ground) for conti-
nuity.
1. Check
using the YDIS.
2. Check the switch continuity and
resistance.
3. Measure the input voltage.
4. Check the shift bracket and shift
mechanism.
1. Check the switch condition using
the YDIS.
2. Measure the input voltage.
—
3. Check the switch continuity.
4. Check the engine temperature
sensor.
Checking steps
the switch operation
harness coupler-to-joint
the switch operation
Refer
to
page
9-1
5-2
5-2
*1
5-1
9-1
8-21
8-21
*1
*1
9-1
8-19
8-19
7-1
9-1
8-18
8-18
8-18
6P23H11