Yamaha WaveRunner VXR VX1800A, Service Manual

Page: 229 / 318

Control system
7-22
2. Check the wire harness for continuity.
Replace if there is no continuity.
3. Connect the APS coupler and ECM cou-
plers.
ETV relay check
1. Remove the fuse box cover and ETV relay
“1”.
2. Check the ETV relay. See “Main relay
check” (7-31).
3. Measure the input voltage between the ter-
minal “a” and ground.
4. Supply power to the ECM, and then mea-
sure the input voltage between the termi-
nals “a” and “b”.
5. Install the ETV relay and fuse box cover.
APS circuit continuity
Terminal No.
Color
code
Coupler “a” Coupler “b”, “c”
1 36 P/R
2 34 B/R
3 49 O/R
4 37 P/W
5 35 B/W
6 50 O/W
7 22 W/G
8 29 B/G
9 30 O/G
c b
34 35 36 37
49 50
30 29
22
3 2 1
6 5 4
7 8 9
b c
a
Input voltage
12 V (battery voltage)
Terminal “a”–Ground
Input voltage
12 V (battery voltage)
Terminal “a”–Terminal “b”
1
a
a
b