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-433, "DTC Logic".
• If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to SEC-434, "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-460, "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:
Headlamp
Description
Headlamp lighting when theft warning system is in alarm phase.
Component Function Check
1.CHECK HEADLAMP OPERATION
Check if headlamps operate by lighting switch.
Does headlamp come on when turning switch “ON”?
YES >> Headlamp circuit is OK.
NO >> Check headlamp ...
B2190, P1610 nats antenna AMP
Description
Performs ID verification through BCM and Intelligent Key when push-button
ignition switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered
ID of Intelligent Key is used.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PE ...
P0102, P0103 MAF sensor
Description
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
reduced a ...