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:
Floor trim
Exploded View
1. Spacer (LH)
2. Floor carpet
3. Spacer (RH)
4. Floor mat hook
Removal and Installation
REMOVAL
1. Remove the diagnosis sensor unit. Refer to SR-17, "Removal and
Installation".
2. Remove front seat (RH/LH) and rear seat cushion. Refer to SE-23, "Removal ...
B210B starter control relay
Description
Starter control relay, integrated in IPDM E/R, permits the starter relay
operation when in N or P position and
the steering is locked or unlocked. It is installed in parallel with the starter
relay.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B210B is displayed with DTC U10 ...
Intake valve timing control
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed
operating angle of the intake
valve.
The ECM receives signals s ...