Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm di eg cip0500
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DI-103
DIAGNOSTICS - ENGINE
DI6VG-04
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
The No.1 vehicle speed sensor outputs a 4-pulse signal for every revolution of the rotor shaft, which is ro-
tated by the transmission output shaft via the driven gear. After this signal is converted into a more precise
rectangular 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 pluse signals.
4-Pulse 4-Pulse
No.1 Vehicle
Speed Sensor
Combination Meter
ECM
Transaxle
Vehicle Speed Sensor
A00414
DTC No. DTC Detecting Condition Trouble Area
S Combination meter
During vehicle is being driven, no vehicle speed sensor signal
S Open or short in vehicle speed sensor circuit
P0500 to ECM
S Vehicle speed sensor
(2 trip detection logic)
S ECM
WIRING DIAGRAM
ECM
Combination Meter
Instrument Panel J/B
19 6 3 9
V-W V-W
C14 1F 1H E4 SPD
A09122
2002 ECHO (RM884U)
Author : Date : 273
DI-104
DIAGNOSTICS - ENGINE
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel ratio lean or rich, etc.
at the time of the malfunction.
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedmeter in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer circuit. See combination
meter troubleshooting. (See page BE-2 ).
OK
2002 ECHO (RM884U)
Author : Date : 274
DI-105
DIAGNOSTICS - ENGINE
2 Check voltage between terminal SPD of ECM connector and body ground.
PREPARATION:
ON SPD
(a) Remove the connector cover from the ECM.
(b) Shift the shift lever to neutral.
(c) Jack up one of the front wheels.
(d) Turn the ignition switch ON.
CHECK:
(-) (+) Measure voltage between terminal SPD of ECM connector and
body ground when the wheel is turned slowly.
A09041 OK:
Voltage is generated intermittently.
4.5 5.5 V
0
Turn the wheel
AT7809
NG Check and repair harness and connector
between combination meter and ECM.
OK
Check and replace ECM (See page IN-29 ).
2002 ECHO (RM884U)
Author : Date : 275
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