Nissan Altima 2007-2012 Service Manual: Rear window defogger system

System Diagram

System Description

Operation Description

• Turn rear window defogger switch ON when the ignition switch is turned ON. Then front air control (rear window defogger switch) transmits rear window defogger switch signal to BCM.

• BCM turns rear window defogger relay ON when rear window defogger switch signal is received.

• Rear window defogger and door mirror defogger (with door mirror defogger) are supplied with power and operate when rear window defogger relay turns ON.

• BCM transmits rear window defogger control signal to IPDM E/R via CAN communication when rear window defogger operates.

• Rear window defogger ON is displayed when front air control receives signals.

Timer function

• BCM turns rear window defogger relay ON for approximately 15 minutes when rear window defogger switch is turned ON while ignition switch is ON. It makes rear window defogger and door mirror defogger (with door mirror defogger) operate.

• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns rear window defogger relay OFF. The same reaction also occurs during timer operation, if the ignition switch is turned OFF.

INPUT/OUTPUT SIGNAL CHART

*: With door mirror defogger

Component Parts Location

1. BCM M16, M17, M18, M19 (view with instrument panel removed)

2. IPDM E/R E17

3. A. Fuse block (J/B) B. Rear window defogger relay J-4

4. Front air control (rear window defogger switch) M37

5. Door mirror (door mirror defogger) LH D4, RH D107 (if equipped)

6. A. Rear window defogger (+) B53 B. Condenser B52 (view with rear pillar finisher LH removed)

7. Rear window defogger (-) B54 (view with rear pillar finisher RH removed)

Component Description

*: With heated mirrors

    Other materials:

    P0778 pressure control solenoid B electrical (sec pressure solenoid valve)
    Description The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Always drive vehicle ...

    Body alignment
    Body Center Marks A mark has been placed on each part of the body to indicate the vehicle center. When repairing parts damaged by an accident which might affect the vehicle frame (members, pillars, etc.), more accurate and effective repair will be possible by using these marks together with ...

    B2110 PNP/clutch interlock switch
    Description IPDM E/R confirms the shift position with the following signals. • Park/neutral position (PNP) switch (CVT models) • Clutch inter lock switch (M/T models) • Shift position signal from BCM (CAN) DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B2110 is displayed with DTC U1 ...