Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di eg5vzfe cip0500
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DI-103
DIAGNOSTICS - ENGINE (5VZ-FE)
DI0SB-12
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
The speed sensor for ABS detects the wheel speed and sends the appropriate signals to the ABS ECU. The
ECU converts these signals into a 4-pulse signal and outputs it to the combination meter. After this signal
is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combina-
tion meter, it is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency
of these pulse signals.
4-pulse 4-pulse
From ABS ECU ECM
Speed Sensor Combination
Meter
A00022
DTC No. DTC Detecting Condition Trouble Area
No vehicle speed sensor signal to ECM under following condi-
tions: (2 trip detection logic)
For A/T: S Speedometer cable
P0500 (a) Park/neutral position switch is OFF S Open or short in speed signal circuit
(b) Vehicle is being driven S ECM
For M/T:
(a) Engine speed is between 1,800 rpm and 3,500 rpm
WIRING DIAGRAM
ECM
Combination Meter Center J/B 5V
3 8 10 6 SP1
G-O G-O
C28 3E 3E E14
6 From A/C Amprifire
3E
E1
5
From 4WD ECU
3E
A15618
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 was warmed up or not, the air-fuel ratio was lean
or rich, etc. at the time of the malfunction.
2002 4RUNNER (RM887U)
Author : Date : 279
DI-104
DIAGNOSTICS - ENGINE (5VZ-FE)
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed is operating normally if the speedometer display is normal.
NG Check speedometer circuit (See page BE-40 ).
OK
2 Check voltage between terminal SP1 of ECM connector and body ground.
PREPARATION:
SP1 (a) Remove the glove compartment (See page SF-54 ).
(b) Disconnect the E12 connector from the ECM.
(c) Shift the shift lever to the neutral.
(d) Jack up a rear wheel on one side.
(e) Turn the ignition switch ON.
E12 Connector CHECK:
Measure the voltage between terminal SP1 of the ECM connec-
A15316 tor and body ground when the wheel is turned slowly.
OK:
Voltage is generated intermittently.
4 -6V
Turn the Wheel
AT7809
NG Check and repair harness and connector be-
tween combination meter and ECM.
OK
Check and replace ECM (See page IN-28 ).
2002 4RUNNER (RM887U)
Author : Date : 280
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