DTC DETECTION LOGIC 
DTC CONFIRMATION PROCEDURE
1. DTC CONFIRMATION
1. Erase DTC.
2. Turn ignition switch OFF.
3. Perform the Self Diagnostic Result of BCM with CONSULT, after the ignition switch has been turned ON for 120 seconds or more.
Is any DTC detected?
YES >> Refer to BCS "Diagnosis Procedure".
NO >> Inspection End.
1. CHECK BATTERY VOLTAGE
Check battery voltage.
Is battery voltage less than 8.8V?
YES >> Charge battery and retest. Refer to CHG "Work Flow (With EXP NI or GR-1200 NI)" or CHG "Work Flow (Without EXP NI or GR-1200 NI)".
NO >> GO TO 2.
2. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check BCM power supply and ground circuit. Refer to BCS "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connectors.
3. BCM SELF DIAGNOSTIC RESULT
Perform Self Diagnostic Result of BCM with CONSULT. Refer to BCS "BCM : CONSULT Function (BCM - BCM)".
Is DTC B2562 CRNT?
YES >> Replace BCM. Refer to BCS "Removal and Installation".
NO >> Refer to GI "Intermittent Incident".

Diagnosis Procedure Regarding Wiring Diagram information, refer to BCS "Wiring Diagram". 1.CHECK FUSES AND FUSIBLE LINK Is the fuse blown? YES >> Replace the blown fuse or fusible ...
Keys
Type A (if so equipped)
1. Master key
2. Valet key
3. Key number plate
A key number plate is supplied with your keys.
Record the key number and keep it in a safe place
(such as your wallet), not in the vehicle. If you lose
your keys, it is recommended that you visit a
NISSAN dealer for ...
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 ...