6-94 ENGINE GENERAL INFORMATION AND DIAGNOSIS
DTC P0500 (DTC No.16) Vehicle Speed Sensor (VSS) Malfunction
CIRCUIT DESCRIPTION
1. VSS
2. Combination meter
NOTE:
For TYPE A and TYPE B, refer to the NOTE in "ECM Terminal Voltage Values Table" for applicable
model.
DTC DETECTING CONDITION
• 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:
• When performing a road test, select a place where there is no traffic or possibility of a traffic acci-
dent and be very careful during testing to avoid occurrence of an accident.
• 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.
3. VSS connector
[A] : Case of TYPE A is shown (See NOTE)
[B] : Case of TYPE B is shown (See NOTE)
POSSIBLE CAUSE
• "B/Or" circuit open
• "Y" or "Bl/B" circuit open or short
• VSS malfunction
• ECM malfunction
• Speedometer malfunction