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TIP
If fault code numbers "13" and "14" are both indicated, take the actions specified for fault code number
"13" first.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Indicated
Procedure
Probable cause of mal-
Item
function and check
1
Connection of throttle posi-
tion sensor coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
2
Connection of ECU coupler.
Check the locking condition
of the coupler.
Disconnect the coupler and
check the pins (bent or bro-
ken terminals and locking
condition of the pins).
3
Wire harness continuity.
4
Installed condition of throttle
position sensor.
Check for looseness or
pinching.
15
Throttle position sensor: open or short circuit detected.
Able to start engine
Able to drive vehicle
01
Throttle position sensor signal
• 14–20 (fully closed position)
Check with throttle valve fully closed.
Maintenance job
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Improperly connected →
Connect the coupler secure-
ly or replace the wire har-
ness.
Open or short circuit → Re-
place the wire harness.
Between throttle position
sensor coupler and joint cou-
pler.
black/blue–black/blue
blue–blue
Between throttle position
sensor coupler and ECU
coupler.
yellow–yellow
Between joint coupler and
ECU coupler.
blue–blue
black/blue–black/blue
Improperly installed sensor
→ Reinstall or adjust the
sensor.
Refer to "ADJUSTING THE
THROTTLE POSITION
SENSOR" on page 7-7.
8-41
FUEL INJECTION SYSTEM
Confirmation of service
completion
Turn the main switch to "
(on).
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 2.
Turn the main switch to "
(on).
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 3.
Turn the main switch to "
(on).
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 4.
Turn the main switch to "
(on).
Fault code number is not dis-
played → Service is finished.
Fault code number is dis-
played → Go to item 5.
"
"
"
"
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