Operation Manual

7-18
FUEL INJECTION SYSTEM
5 Applied voltage of throttle position sensor lead Measure the output voltage.
Refer to "CHECKING THE
THROTTLE POSITION SEN-
SOR".
Set the switch on the FI di-
agnostic tool sub-wire har-
ness to "ON", and then
check the fault code dis-
play.
Fault code number is not
displayed → Service is
finished.
Fault code number is dis-
played → Refer to item 6.
Open circuit
item
Applied voltage
Ground wire
open circuit
5 V
Output wire
open circuit
0 V
Power supply
wire open circuit
0 V
6 Defective throttle position sensor. Execute the diagnostic mode (di-
agnostic code No. D01).
When throttle is fully closed: A
value of 15–19 is indicated.
When throttle is fully opened: A
value of 95–101 is indicated.
Displayed value is out of specifica-
tion → Replace.
Set the switch on the FI di-
agnostic tool sub-wire har-
ness to "ON", and then
check the fault code dis-
play.
Fault code number is not
displayed → Service is
finished.
Fault code number is dis-
played → Refer to item 7.
7 Malfunction in ECU. Replace the ECU.
Fault code No. 15
Symptom Throttle position sensor signal is not received properly.
Fail-safe system Able to start
Able to drive
Diagnostic code No. D01
FI diagnostic tool display • 15–19° (Fully closed position)
• 95–101° (Fully opened position)
Checking method
• Check with throttle valves fully closed.
• Check with throttle valves fully open.
Item Item/components and probable cause Check or maintenance job Checking method