Suzuki WagonR+ RB310 Service Manual page 2449

6-90 ENGINE DIAGNOSIS
DTC P0500 (DTC NO.16) VEHICLE SPEED SENSOR (VSS) MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITION
D VSS signal not inputted while vehicle running in "D"
range or during fuel cut at deceleration.
2 driving cycle detection logic, continuous monitoring
DTC CONFIRMATION PROCEDURE
WARNING:
D When performing a road test, select a place where there is no traffic or possibility of a traffic accident
and be very careful during testing to avoid occurrence of an accident.
D Road test should be carried out with 2 persons, a driver and a tester.
1) Clear DTC and warm up engine to normal operating temperature.
2) Increase vehicle speed to 50 mph, 80 km/h in 3rd gear or "2" range while observing vehicle speed displayed
on scan tool.
3) Release accelerator pedal and with engine brake applied, keep vehicle coasting (fuel cut condition) for 4 sec.
or more.
4) Check pending DTC and DTC.
1. VSS sensing rotor
2. VSS (vehicle speed sensor)
3. VSS connector
4. Power supply from ignition switch
5. Speedometer, P / S control module
6. ECM / PCM connector
7. ECM / PCM
POSSIBLE CAUSE
D "Br" circuit open
D "V" or "B/W" circuit open or short
D VSS (speedometer driven gear) malfunction
D ECM malfunction
D Speedometer malfunction