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A62708
4--Pulse
Combination Meter
Transaxle
ECM
No. 1 Vehicle
Speed Sensor
4--Pulse
05--124
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
COROLLA Supplement (RM1129E)
DTC
P0500
VEHICLE SPEED SENSOR ”A”
CIRCUIT DESCRIPTION
The vehicle speed sensor outputs a 4--pulse signal for every revolution of the rotor shaft, which is rotated
by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectan-
gular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the
ECM. The ECM determines the vehicle speed based on the frequency of these pulse signals.
DTC No.
DTC Detection Condition
Trouble Area
P0500
No vehicle speed sensor signal to ECM While vehicle driven
with highly loaded engine and in high gear
(The MIL is illuminated and a DTC is set when the same mal-
function is detected on 2 consecutive trips*
*: One trip is counted when the ignition switch is turned from
OFF to ON and back to OFF)
S
Open or short in speed sensor circuit
S
Speed sensor
S
Combination meter
S
ECM
HINT:
DTC P0500 is set when the vehicle is driven with highly loaded engine and in high gear.
05B5L--26
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E