Service manual

FUEL INJECTION SYSTEM
8-52
Fault code No. 15 Symptom Throttle position sensor:open or short circuit detected.
Diagnostic code No. 01 Throttle position sensor
Order
Item/components and probable
cause
Check or maintenance job
Reinstatement
method
1
Installed condition of throttle position
sensor.
• Check for looseness or pinch-
ing.
• Check that is installed in the
specified position.
Turning the
main switch to
“ON”.
2
Connections
• Throttle position sensor coupler
• Main wire harness ECU coupler
• Sub-wire harness coupler
• Check the couplers for any pins
that may be pulled out.
• Check the locking condition of
the couplers.
• If there is a malfunction, repair it
and connect the coupler
securely.
3
Open or short circuit in wire harness. • Repair or replace if there is an
open or short circuit.
• Between throttle position sensor
coupler and ECU coupler
(Black/Blue–Black/Blue)
(Yellow–Yellow)
(Blue–Blue)
4
Throttle position sensor lead wire open
circuit output voltage check.
• Check for open circuit and
replace the throttle position sen-
sor.
(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
5
Defective throttle position sensor. • Execute the diagnostic mode.
(Code No.01)
• Replace if defective.
Refer to "CHECKING THE
THROTTLE POSITION SEN-
SOR" on page 8-97.