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3-72 FUEL SYSTEM (DFI)
Speed Sensor (Service Code 24)
Speed Sensor Removal/Installatio n
•
Refer to the Speed Sensor Removal/Installation in
the Electrical System chapter (see Speed Sensor Re-
moval/Installation in the Electrical System chapter).
Input Voltage Inspection
NOTE
○
Be sure the battery is fully charged.
○
The input voltage is the same as “Input Voltage Inspec-
tion” of the throttle sensor ,inlet air pressure sensor and
atmospheric pressure sensor.
•
Turn the ignition switch OFF.
•
Remove the ECU (see ECU Removal).
○
Do not disconnect the ECU connectors.
•
Connect a digital meter [A] to the connector [B], using the
needle adapter set.
Special Tool - Needle Adapter Set: 57001-1457
Speed Sensor Input Voltage
Connections to ECU Connector
Meter (+) → BL lead (terminal 7)
Meter (−) → BR/BK lead (terminal 34)
•
Measure the input voltage with the engine stopped, and
with the connectors joined.
•
Turn the ignition switch ON.
Input Voltage at ECU Connector
Standard: DC 4.75 ∼ 5.25 V
•
Turn the ignition switch OFF.
If the reading of input voltage is less than the standard,
check the ECU for its ground, and power supply (see ECU
Power Supply Inspection). If the ground and power sup-
ply are good, replace the ECU (see ECU section).
If the input voltage is within the standard range, check the
input voltage at the speed sensor connector.
•
Disconnect the speed sensor connector [A].
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