FUEL INJECTION SYSTEM
FI
ifl
Intake air pressure sensor-hose system malfunction
Fault code No. 14 Symptom
(clogged or detached hose).
tached hose).
Used diagnostic code No. D03 (intake air pressure sensor)
Order
Inspection operation item and
probable cause
Operation item and countermeasure
Reinstatement
method
1
2
Connected state of connector
Intake air pressure sensor cou-
pler
Main wirring harness ECU cou-
pler
Sub-wire harness coupler
Check the coupler for any pins that may have
pulled out.
Check that the coupler is connected securely.
If there is a malfunction, repair it and connect
it securely.
Reinstated by start-
ing the engine and
operating it at idle.
1
2
Defective intake air pressure
sensor.
Execute the diagnostic mode (code No. D03)
Replace the throttle body.
NOTE:
Do not remove the sensor assembly (MAQS).
Refer to “Fault code No. 13”.
Reinstated by start-
ing the engine and
operating it at idle.
Fault code No. 15 Symptom Throttle position sensor-open or short circuit detected.
Used diagnostic code No. D01 (throttle position sensor)
Order
Inspection operation item and
probable cause
Operation item and countermeasure
Reinstatement
method
1
2
3
4
Installed condition of throttle
position sensor.
Check the installed area for looseness or
pinching.
Check that it is installed in the specified po-
sition.
Refer to “THROTTLE BODY AND FUEL IN-
JECTOR”.
Reinstated by turn-
ing the main switch
ON.
1
2
3
4
Connected condition of con-
nector
Inspect the coupler for any
pins that may have pulled
out.
Check the locking condition
of the coupler.
If there is a malfunction, repair it and connect
it securely.
Throttle position sensor coupler
Main wiring harness ECU coupler
Sub-wire harness coupler
Reinstated by turn-
ing the main switch
ON.
1
2
3
4
Open or short circuit in wiring
harness and/or sub lead.
Repair or replace if there is an open or short
circuit.
Between sensor coupler and ECU coupler
black/blue - black/blue
yellow - yellow
blue -blue
Reinstated by turn-
ing the main switch
ON.
1
2
3
4
Defective throttle position sen-
sor.
Execute the diagnostic mode (code No. D01)
Replace the throttle body.
NOTE:
Do not remove the sensor assembly (MAQS).
Refer to “THROTTLE BODY AND FUEL IN-
JECTOR ”.
Reinstated by turn-
ing the main switch
ON.
7-15
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