Nissan Altima 2007-2012 Service Manual: B2556 push-button ignition switch
Description
The switch that changes the power supply position. BCM maintains the power supply position status. BCM changes the power supply position with the operation of the push-button ignition switch.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and wait for at least 100 seconds.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected? YES >> Refer to SEC-72, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
1.CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect push-button ignition switch harness connector.
3. Check voltage between push-button ignition switch harness connector and ground.
Is the inspection result normal? YES >> GO TO 2
NO >> GO TO 4
2.CHECK PUSH-BUTTON IGNITION SWITCH
Refer to SEC-73, "Component Inspection".
Is the inspection result normal? YES >> GO TO 3
NO >> Replace push-button ignition switch. Refer to SEC-208, "Removal and Installation".
3.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> Inspection End.
4.CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT FOR SHORT
1. Disconnect BCM harness connector and IPDM E/R harness connector.
2. Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal? YES >> Replace BCM. Refer to BCS-96, "Removal and Installation".
NO >> Repair harness or connector.
Component Inspection
1.CHECK PUSH-BUTTON IGNITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect push-button ignition switch harness connector.
3. Check continuity between push-button ignition switch terminals under the following conditions.
Is the inspection result normal? YES >> Inspection End.
NO >> Replace push-button ignition switch. Refer to SEC-208, "Removal and Installation".
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 ...B2557 vehicle speed
Description BCM receives the 2 vehicle speed signals via CAN communication. 1 signal is transmitted by the “unified meter” Another signal is transmitted by “ABS actuator and electric unit ( ...Other materials:
P0845 transmission fluid pressure
sensor B (pri pressure sensor)
Description
The transmission fluid pressure sensor B (primary pressure sensor) detects
primary pressure of CVT and
sends TCM the signal.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn
igniti ...
P1723 cvt speed sensor function
Description
The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)]
detects the revolution of
parking gear and generates a pulse signal. The pulse signal is sent to the TCM,
which converts it into vehicle
speed.
The input speed sensor (primary speed sensor) detects the ...
B2099 ignition relay off stuck
Description
• IPDM E/R operates the ignition relay when it receives an ignition switch ON
signal from BCM via CAN communication.
• Turn the ignition relay OFF by pressing the push-button ignition switch once
when the vehicle speed is 4 km/
h (2.5 MPH) or less.
• Turn the ignition ...