FUEL INJECTION SYSTEM
8-60
B-1 Connections
• Neutral switch coupler
• Wire harness ECU coupler
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
Starting the en-
gine, and acti-
vating the
speed sensor
by operating
the vehicle at
20 to 30 km/h.
B-2 Open circuit in neutral switch lead. • Repair or replace if there is an
open circuit.
• Between neutral switch coupler
and relay unit coupler (fuel
pump relay).
(sky blue–sky blue)
• Between relay unit coupler and
main switch.
(blue/yellow–blue/yellow)
• Between main switch and ECU
coupler.
(blue/black–blue/black)
B-3 Faulty shift drum (neutral detection ar-
ea).
• Replace if defective.
Refer to “TRANSMISSION” on
page 5-79.
B-4 Defective neutral switch. • Execute the diagnostic mode.
(Code No. 21)
• Replace if defective.
Refer to “CHECKING THE
SWITCHES” on page 8-83.
Fault code No. 42 Symptom A. No normal signals are received from the speed sensor.
B. Open circuit is detected in the neutral switch.
Diagnostic code No. A 07 Speed sensor
B 21 Neutral switch
Order Item/components and probable
cause
Check or maintenance job Reinstatement
method
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