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FUEL INJECTION SYSTEM
Make sure that the engine is completely cool before checking the coolant temperature sensor.
Fault code No. 16
Symptom Signal from throttle position sensor does not change.
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
1 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 operate the
throttle.
After completing the
above operation,
check whether a fault
code number is dis-
played.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 2.
2 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 operate the
throttle.
After completing the
above operation,
check whether a fault
code number is dis-
played.
Fault code number
is not displayed →
Service is finished.
Fault code number
is displayed → Re-
fer to item 3.
3 Malfunction in ECU. Replace the ECU.