The vehicle speed signal is used to monitor the vehicle speed. The vehicle speed signal is one of the fuel control reference signals
during an urgent deceleration. The vehicle speed sensor working voltage is provided by The Main Relay which is controlled by ECM
via ECM harness connector EN01 terminal No.57. The vehicle speed sensor signal is sent to the instrument panel used for the
vehicle speed display.
2. Conditions For Setting DTC and The Fault Location:
DTC Code
DTC Detection Strategy
Conditions For Setting The DTC (Control Strategy)
Fault Locations
P0502
Vehicle Speed Sensor No
Signal
1. Under hot operating conditions, driving the vehicle at
Low-Speed at 3rd gear, Disconnect the vehicle
speed sensor. and then press the acceleration pedal
hard to accelerate to higher than 4,000 and
immediately release the pedal. Engine speed,
vehicle speed and MAP values begin to decline.
When entering the fault setting window, DTC code
will be set.
2. Under hot operating conditions, driving the vehicle at
medium speed at 4th gear, Disconnect the vehicle
speed sensor. and then press the acceleration pedal
to accelerate the vehicle. Engine speed, vehicle
speed and MAP values entering the fault setting
window, DTC code will be set.
1. Vehicle Speed Sensor
Circuit
2. Vehicle Speed Sensor
3. ECM
3. Schematic:
MAIN
EF12
5
2
3
1
2
1
3
VSS
MPR
41
62
EO35
EO35
Main Relay
From Battery
Engine
Control
Module
Vehicle
Speed
Sensor
To Meter
FE02-5292b
Engine
Control System JL4G15-D
2-747
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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