DTC DETECTION LOGIC 
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
Is inside key antenna DTC detected?
YES >> Refer to DLK "Diagnosis Procedure".
NO >> Inside key antenna (console) is OK.
Regarding Wiring Diagram information, refer to DLK "INTELLIGENT KEY SYSTEM : Wiring Diagram".
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1

Is the inspection result normal?
YES >> Replace BCM. Refer to BCS "Removal and Installation".
NO >> GO TO 2.
2.CHECK INSIDE KEY ANTENNA CIRCUIT

Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2

Is the inspection result normal?
YES >> Replace inside key antenna (console).
NO >> Replace BCM. Refer to BCS "Removal and Installation".
Cleaning exterior
In order to maintain the appearance of your vehicle,
it is important to take proper care of it.
To protect the paint surfaces, please wash your
vehicle as soon as you can:
After a rainfall to prevent possible damage
from acid rain.
After driving on coastal roads.
When contaminants suc ...
P1148 closed loop control
DTC Logic
DTC DETECTION LOGIC
NOTE:
DTC P1148 is displayed with DTC for A/F sensor 1.
When the DTC is detected, perform the trouble diagnosis of DTC corresponding to
A/F sensor 1.
DTC No.
Trouble diagnosis
(Trouble diagnosis content)
DTC detecting condition
Possible cause ...