Nissan Altima 2007-2012 Service Manual: Signal buffer system
System Diagram
System Description
• IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via CAN communication. Refer to PCS-11, "System Description".
• IPDM E/R receives the rear window defogger status signal from BCM via CAN communication and transmits it to ECM via CAN communication. Refer to PCS-11, "System Description".
Power control system
System Diagram
System Description
COOLING FAN CONTROL
IPDM E/R controls cooling fans according to the status of the cooling fan
speed request signal received from
ECM via CAN communication. R ...
Power consumption control system
System Diagram
System Description
OUTLINE
• IPDM E/R incorporates a power consumption control function that reduces the
power consumption according
to the vehicle status.
• IPDM E/R ch ...
Other materials:
B2602 shift position
Description
BCM confirms the shift position with the following 2 signals.
• CVT selector lever
• Speed signal from meter
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B2602 is displayed with DTC U1000, first perform the trouble diagnosis
for DTC U1000. Refer to
SEC-235, "DTC L ...
B1xxx air bag diagnosis sensor unit
Description
DTC B1XXX AIR BAG DIAGNOSIS SENSOR UNIT
The air bag diagnosis sensor unit will run self diagnostics when the ignition
switch is turned ON. It has the
potential to set many diagnostic trouble codes which will conform to the B1XXX
format, but will not match any
other SRS diagnosti ...
Can communication circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system.
4. Check terminals and connectors for damage, bend and loose con ...