Nissan Altima 2007-2012 Service Manual: B2193, P1612 chain of ecm-immu
Description
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON.
DTC Logic
DTC DETECTION LOGIC
NOTE: • If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-36, "DTC Logic".
• If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-37, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON under the following conditions.
- CVT selector lever is in the P or N position.
- Do not depress brake pedal.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected? YES >> Refer to SEC-69, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
1.REPLACE BCM
1. Replace BCM. Refer to BCS-96, "Removal and Installation".
2. Perform initialization with CONSULT-III.
For initialization, refer to CONSULT-III Operation Manual”.
Does the engine start? YES >> BCM is malfunctioning.
• Replace BCM. Refer to BCS-96, "Removal and Installation".
• Perform initialization again.
NO >> ECM is malfunctioning.
• Replace ECM.
• Perform ECM re-communicating function.
B2192, P1611 ID discord, immu-ECM
Description
BCM performs the ID verification with ECM that allows the engine to start.
Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM s ...
B2555 stop lamp
Description
BCM detects the stop lamp status and confirms the stop lamp switch ON/OFF
status. BCM confirms the
engine start condition according to the stop lamp switch ON/OFF status.
DTC Logic
...
Other materials:
Drive belts
Checking Drive Belts
WARNING:
Inspect the drive belt only when the engine is stopped.
NOTE:
On vehicles not equipped with A/C, there is an idler pulley in the position for
the drive belt routing.
• Make sure that the stamp mark of drive belt auto-tensioner is within the
usable ...
P0452 evap control system pressure
sensor
Description
The EVAP control system pressure sensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pressure
increases.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously cond ...
U1001 Can comm circuit
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent error
detection ability. Many electronic
control units are equipped onto a vehicle, and each c ...