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FI
FUEL INJECTION SYSTEM
Fault code No. 14 Symptom Intake air pressure sensor - hose system malfunction (clogged or
detached hose).
Used diagnostic code No. 03 (intake air pressure sensor)
Inspection operation item and probable cause Operation item and countermeasure Reinstatement
method
Intake air pressure sensor hose detached,
clogged, kinked, or pinched.
Intake air pressure sensor malfunction at inter-
mediate electrical potential.
Atmospheric pressure sensor malfunction at
intermediate electrical potential.
Repair or replace the sensor hose.
Inspect and repair the connection.
Reinstated by
starting the engine
and operating it at
idle.
Defective intake air pressure sensor. Replace if defective.
Refer to “Fault code No.13”.
Fault code No. 15 Symptom Throttle position sensor - open or short circuit detected.
Used diagnostic code No. 01 (throttle position sensor)
Inspection operation item and probable cause Operation item and countermeasure Reinstatement
method
Defective throttle position sensor. Replace if defective.
Refer to “THROTTLE BODIES” section.
Reinstated by turn-
ing the main switch
ON.
Open or short circuit in wiring harness and/or
sub lead.
Repair or replace if there is an open or short
circuit.
Between sensor coupler and ECU coupler
Black/Blue - Black/Blue
Yellow - Yellow
Blue - Blue
Installed condition of throttle position sensor. Check the installed area for looseness or
pinching.
Check that it is installed in the specified posi-
tion.
Refer to “THROTTLE BODIES” section.
Connected condition of connector
Inspect the coupler for any pins that may
have pulled out.
Check the locking condition of the coupler.
If there is a malfunction, repair it and connect it
securely.
Throttle position sensor coupler
Main wiring harness ECU coupler
Sub-wire harness coupler
Fault code No. 16 Symptom Stuck throttle position sensor detected.
Used diagnostic code No. 01 (throttle position sensor)
Inspection operation item and probable cause Operation item and countermeasure Reinstatement
method
Defective throttle position sensor Replace if defective.
Refer to “THROTTLE BODIES” section.
Reinstated by
starting the engine,
operating it at idle,
and then racing it.
Installed condition of throttle position sensor. Check the installed area for looseness or
pinching.
Check that it is installed in the specified
position.
Refer to “THROTTLE BODIES” section.