Checking The Electronic Throttle Valve And Tps Circuit - SELVA MARINE Blue Whale 250 EFI Service Manual

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ELEC
4. Disconnect the ECM coupler d, and
then turn the engine start switch to ON.
5. Check the voltage at ECM coupler termi-
nal e (13, wiring harness end). Check
the fuse, wiring harness, and engine start
switch if below specification.
d
a
b
Terminal e (yellow) C – Ground:
12 V (battery voltage)
6. Turn the engine start switch to OFF, and
then connect the ECM coupler d.
7. Disconnect the ECM coupler a, and
then turn the engine start switch to ON.
8. Check the voltage at ECM coupler termi-
nals f (27 and 34, wiring harness end).
Check the fuse, relay, and wiring harness
if below specification.
8-23
Electrical system
S6P28470
d
e
S6P28480
d
a
a
Terminal f (red/yellow) (R/Y):
Q – Ground:
X – Ground:
12 V (battery voltage)
Checking the electronic throttle
valve and TPS circuit
NOTE:
To check the TPS output voltage, see Chap-
ter 4, "Checking the TPS."
1. Disconnect ECM couplers a and b.
a
b
S6P28490
f
S6P28500
S6P28450
6P23H11