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FUEL INJECTION SYSTEM
4 Installed condition of sensor.
• Make sure that the installation posi-
tion is correct.
• Make sure that there are no problems
with the installation.
Check that the sensor is in-
stalled securely and that
there are no pinched
leads.Check that the ECU is
installed securely and that
there are no pinched leads.
Incorrect installation → Re-
install or repair.
Incorrect installation posi-
tion → Properly install.
Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 5.
5 Applied voltage of throttle position sen-
sor lead
Measure the output voltage.
Refer to "CHECKING THE
THROTTLE POSITION
SENSOR".
Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 6.
Open circuit
item
Applied volt-
age
Ground wire
open circuit
5 V
Output wire
open circuit
0 V
Power sup-
ply wire open
circuit
0 V
6 Defective throttle position sensor. Execute the diagnostic
mode (diagnostic 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
specification → Replace.
Set the switch on the
FI diagnostic tool sub-
wire harness to "ON",
and then check the
fault code display.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 7.
7 alfunction 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 dis-
play
• 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