Nissan Altima 2007-2012 Service Manual: 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 changes its status (control mode) with the sleep wake up signal received from BCM via CAN communication.

Normal mode (wake-up)

- CAN communication is normally performed with other control units.

- Individual unit control by IPDM E/R is normally performed.

Low power consumption mode (sleep)

- Low power consumption control is active.

- CAN transmission is stopped.

SLEEP MODE ACTIVATION

• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communication.

- Front wiper fail-safe operation

- Outputting signals to actuators

- Switches or relays operating

- Auto active test is starting

- Emergency OFF

- Output requests are being received from control units via CAN communication.

• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.

WAKE-UP OPERATION

• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.

- Ignition switch ON

- An output request is received from a control unit via CAN communication.

Component Parts Location

1. BCM M16, M17, M18, M19, M20, M21 (view with instrument panel removed)

2. Combination meter M24

3. IPDM E/R E16, E17, E18, E200, E201, F10

    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, "Syst ...

    Diagnosis system (IPDM E/R)
    Diagnosis Description AUTO ACTIVE TEST Description In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation. • Oil pressure warning lamp ...

    Other materials:

    Fuel injector and fuel tube
    Removal and Installation 1. Fuel feed hose 2. Quick connector cap 3. Fuel tube 4. O-ring 5. Fuel damper 6. Fuel damper cap 7. Clip 8. O-ring (black) 9. Fuel injector 10. O-ring (green) A. Follow installation procedure CAUTION: • Apply new engine oil when installing the parts as spec ...

    Microphone
    Diagnosis Procedure 1.CHECK POWER SUPPLY CIRCUIT (MICROPHONE SIDE) Check voltage between microphone harness connector and ground. Is proper voltage present? YES >> GO TO 4 NO >> GO TO 2 2.CHECK POWER SUPPLY CIRCUIT (CONTINUITY) 1. Turn ignition switch OFF. 2. Disconnect Blu ...

    Diagnosis and repair workflow
    Work Flow OVERALL SEQUENCE DETAILED FLOW 1.GET INFORMATION FOR SYMPTOM Get the detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurred). >> GO TO 2 2.CHECK DTC WITH BCM AND IPDM E/R 1. Check “Self Diagn ...