Description

Diagnosis Procedure
1. CHECK FUSES
Check that the following fuses are not blown.

Is the fuse blown?
YES >> Replace the fuse after repairing the affected circuit.
NO >> Inspection End.
Diagnosis and repair workflowWork Flow DETAILED FLOW 1. REVIEW CUSTOMER COMPLAINT Review customer complaint. Try to obtain detailed information about the conditions when the symptom occurs. >> GO TO 2 2. VERIFY THE ...
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 ...
High-pressure pipe
Removal and Installation
CAUTION:
Perform oil return operation before each refrigeration system disassembly.
However, if a large amount
of refrigerant or oil is detected, do not perform oil return operation. Refer to
HA "Perform Oil
Return Operation".
REMOVAL
Remove low-press ...