Aps Circuit Continuity - Yamaha Waverunner VXS VX1800 Service Manual

TIP:
The actual APS output voltage may vary ac-
cording to environmental conditions.
A
1
APS 1 output voltage with the throttle le-
ver fully closed
0.68–0.74 V
APS 2 output voltage with the throttle le-
ver fully closed
0.68–0.74 V
APS 1 output voltage with the throttle le-
ver fully open
3.95–4.15 V
APS 2 output voltage with the throttle le-
ver fully open
3.95–4.15 V
3. Squeeze the throttle lever "1" to the fully
open position, and then check the voltage
difference between APS 1 and APS 2.
Measure the APS input voltage if out of
specification.
APS output voltage difference
0.1 V or less
4. Squeeze the throttle lever "1" slowly and
check that the "APS full close switch" dis-
play changes from the "ON" to "OFF."
C
1
B
1
D
APS full close switch
Throttle lever position
5. Disconnect the APS coupler "a".
6. Supply power to the ECM, and then mea-
sure the input voltage at the APS coupler
terminals (wire harness end). Check the
APS circuit for continuity if out of specifica-
tion.
a
APS 1 input voltage
4.75–5.25 V
Orange/Red (O/R)–Black/Red (B/R)
APS 2 input voltage
4.75–5.25 V
Orange/White (O/W)–Black/White (B/W)
APS full close switch input voltage
4.75–5.25 V
Orange/Green (O/G)–Black/Green (B/G)
7. Connect the APS coupler.

APS circuit continuity

1. Disconnect the APS coupler "a" and ECM
couplers "b" and "c".
a
7-21
Control system
YDIS display
C
D
O/R
O/W
O/G
ON
OFF
B/R
B/W
B/G