Suzuki VLR1800 Service Manual page 170

1A-101 Engine General Information and Diagnosis:
Step
5 1) If the EXCVA position sensor output voltage is 0.5 V and
less at EXCV fully closed position, adjust the output
voltage to the specified value by adjusting the length of
EXCV cable No. 1. Refer to "EXCVA / EXCV Cable
Removal and Installation in Section 1K (Page 1K-4)".
2) Repeat the procedure in Step 4 until the output voltage is
set within the specified value. (If C46/P1657 code is
indicated after adjusting the voltage, increase the
voltage to 0.4 V).
CAUTION
!
• Adjusting the cable with the EXCV fully
opened or fully closed can damage the
EXCVA. Be sure to adjust the cable with the
EXCV set in the adjustment position. Refer to
"EXCVA / EXCV Cable Removal and
Installation in Section 1K (Page 1K-4)".
• Do not turn the EXCVA pulley using the
wrench.
3) If the EXCVA position sensor output voltage is 4.55 V
and more at EXCV fully opened position, adjust the
output voltage to the specified value by adjusting the
EXCV cable No. 2. Refer to "EXCVA / EXCV Cable
Removal and Installation in Section 1K (Page 1K-4)".
Repeat the procedure in Step 4 until the output voltage is
set within the specified value.
EXCVA position sensor output voltage
EXCV is fully closed: 0.5 ≤ Output voltage ≤ 1.5
EXCV is fully opened: 3.5 ≤ Output voltage ≤ 4.5
Is the voltage OK?
Action Yes
Replace the ECM with a
known good one, and
inspect it again.
No
Replace the EXCVA
with a new one.