Component Function Check
1.CHECK FUNCTION
Is the inspection result normal?
YES >> Key warning lamp is OK.
NO >> Refer to DLK "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK KEY WARNING LAMP
Refer to MWI "Work Flow".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness.
2.CHECK INTERMITTENT INCIDENT
Refer to GI "Intermittent Incident".
>> Inspection End.
P0507 ISC system
Description
The ECM controls the engine idle speed to a specified level through the fine
adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator.
The operating of the throttle valve is
varied to allow for optimum control of the engine ...
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 ...