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FI
FUEL INJECTION SYSTEM
Code No. 16 Symptom 1 Stuck throttle position sensor detected.
2 Intake air pressure sensor - pipe system malfunction (clogged or
detached hose).
Used diagnostic code No. 03 (intake air pressure sensor)
No. 02 (atmospheric pressure sensor)
No. 01 (throttle position sensor)
Inspection operation item and probable cause Operation item and countermeasure Reinstatement
method
1 Defective throttle position sensor. Replace if defective.
Refer to “FUEL INJECTION SYSTEM” in
chapter 8.
Reinstated by
starting the engine,
operating it at idle,
and then racing it.
Throttle position sensor lead wire open circuit
output voltage check
(B/L - Y)
Black/Blue - Yellow
Open circuit item: Output voltage
Ground wire open circuit: 5 V
Output wire open circuit: 0 V
Power supply wire open circuit: 0 V
Check for open circuit and replace the throttle
position sensor.
2 Open or short circuit in wiring harness or
sub lead.
Repair or replace if there is an open or short
circuit.
Main wiring harness
Black/Blue - Black/Blue
Yellow - Yellow
Blue - Blue
Sub lead
Black/Blue - Black/Blue
Yellow - Yellow
Blue - Blue
1 Installed state of throttle position sensor. Check the installed area for looseness or
pinching.
Check that it is installed in the specified
position.
Refer to “FUEL INJECTION SYSTEM” in
chapter 8.
2 Intake air pressure sensor hose detached,
clogged, kinked, or pinched.
Intake air pressure sensor malfunction at
intermediate electrical potential.
Atmospheric pressure sensor malfunction at
intermediate electrical potential.
Repair or replace the sensor hose.
Inspect and repair the connection.
Replace it if there is a malfunction.
Common to 1 and 2:
Connected state 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