Suzuki VL800 Supplementary Service Manual page 52

50 VL800K5 ('05-MODEL)
Step 2
1) Connect the IAP sensor couplers and install the fuel tank.
2) Insert the needle pointed probes to the lead wire coupler.
Start the engine at idle speed and measure the IAP sensor
output voltage at the wire side coupler (between G/B and
B/Br wires or between G/W and B/Br wires).
! IAP sensor output voltage: Approx. 2.6 V at idle speed
(Front cylinder: + G/B – - B/Br)
(Rear cylinder: + G/W – - B/Br)
" 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
& Tester knob indication: Voltage (')
YES Go to Step 3.
• Check the vacuum hose for crack or damage.
NO • Open or short circuit in the G/B or G/W wire.
• Replace the IAP sensor with a new one.
3) After repairing the trouble, clear the DTC using SDS tool.
($Page 39)
Step 3
1) Remove the IAP sensor.
2) Connect the vacuum pump gauge to the vacuum port of the
IAP sensor.
Arrange 3 new 1.5 V batteries in series 1 (check that total -
voltage is 4.5 – 5.5 V) and connect - terminal to the ground -
terminal 2 and + terminal to the Vcc terminal 3.
3) Check the voltage between Vout 4 and ground. Also, check
if voltage reduces when vacuum is applied up to 400 mmHg
by using vacuum pump gauge. ($Page 50)
" 09917-47011: Vacuum pump gauge
09900-25008: Multi-circuit tester set
& Tester knob indication: Voltage (')
2
3
V
V