Nissan Altima 2007-2012 Service Manual: B2109 steering lock relay
Description
The steering lock relay ON signal is transmitted to IPDM E/R by BCM via CAN communication.
IPDM E/R turns the steering lock relay ON and transmits the release of the steering to BCM.
DTC Logic
DTC DETECTION LOGIC
NOTE: • If DTC B2109 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-36, "DTC Logic".
• If DTC B2109 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. Press the push-button ignition switch under the following conditions and wait for at least 1 second.
- CVT selector lever is in the P or N position
- Do not depress the brake pedal
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected? YES >> Refer to SEC-43, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis Procedure
1.CHECK POWER SUPPLY CIRCUIT
Check IPDM E/R power supply circuit. Refer to PCS-23, "Diagnosis Procedure".
Is the inspection result normal? YES >> GO TO 2
NO >> Repair the malfunctioning parts
2.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse (No. 40, located in IPDM E/R).
Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation".
NO >> Check the following.
• Harness for open or short between IPDM E/R and battery
• Fuse
B2108 steering lock relay
Description
The steering lock relay ON signal is transmitted to IPDM E/R by BCM via CAN
communication.
IPDM E/R turns the steering lock relay ON and transmits the release of the
steering to B ...
B210a steering lock condition switch
Description
There are 2 switches in the steering unit. IPDM E/R compares those 2 switches
conditions to judge the
present steering status and transmit the result to BCM via CAN communication.
DTC ...
Other materials:
P1225 TP Sensor
Description
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the ...
Auto operation does not operate
but manual operates normally
(passenger side)
Diagnosis Procedure
1. PERFORM INITIALIZATION PROCEDURE
Perform initialization procedure.
Refer to PWC-190, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special
Repair Requirement".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or replace the ma ...
Power consumption control system
System Diagram
System Description
OUTLINE
• BCM incorporates a power saving control function that reduces the power
consumption according to the
vehicle status.
• BCM switches the status (control mode) by itself with the power saving control
function. It performs the sleep
request ...