Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » Wiper and Washer Systems » Description and Operation » System Description  
 
 
  System Description  
 

FRONT WIPER AND WASHER SYSTEM

System Description

OUTLINE
The front wiper is controlled by each function of BCM and IPDM E/R.

Control by BCM

  • Combination switch reading function
  • Front wiper control function

Control by IPDM E/R

  • Front wiper control function
  • Relay control function

FRONT WIPER BASIC OPERATION

  • BCM detects the combination switch condition by the combination switch reading function.
  • BCM transmits the front wiper request signal to IPDM E/R with CAN communication depending on each operating condition of the front wiper.
  • IPDM E/R turns ON/OFF the integrated front wiper relay and the front wiper high relay according to the front wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.

FRONT WIPER LO OPERATION

  • BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the front wiper LO operating condition.

Front wiper LO operating condition

  • Ignition switch ON
  • Front wiper switch LO or front wiper switch MIST (while pressing)
  • IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).

FRONT WIPER HI OPERATION

  • BCM transmits the front wiper request signal (HI) to IPDM E/R with CAN communication according to the front wiper HI operating condition.

Front wiper HI operating condition

  • Ignition switch ON
  • Front wiper switch HI
  • IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper request signal (HI).

FRONT WIPER INT OPERATION

  • BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication depending on the front wiper INT operating condition and intermittent operation delay interval according to the wiper intermittent dial position.

Front wiper INT operating condition

  • Ignition switch ON
  • Front wiper switch INT
  • IPDM E/R turns ON the integrated front wiper relay so that the front wiper is operated only once according to the front wiper request signal (INT).
  • BCM detects stop position/except stop position of the front wiper motor according to the front wiper auto stop signal received from IPDM E/R with CAN communication.
  • BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval.

  

NOTE:
Front wiper intermittent operation can be set to the operation with vehicle speed by CONSULT-III. Refer to See: Body and Frame\Body Control Systems\Testing and Inspection\Scan Tool Testing and Procedures\Diagnosis System (BCM)\Wiper.
Front wiper intermittent operation with vehicle speed

  • BCM calculates the intermittent operation delay interval from the following
  • Vehicle speed signal (received from the combination meter with CAN communication)
  • Wiper intermittent dial position

  

FRONT WIPER AUTO STOP OPERATION

  • BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
  • IPDM E/R detects the front wiper auto stop signal from the front wiper motor and detects the front wiper motor position (stop position/except stop position).
  • When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper motor returns to the stop position.

  

NOTE:

  • BCM stops the transmitting of the front wiper request signal when the ignition switch OFF.
  • IPDM E/R turns the front wiper relay OFF when the ignition switch OFF.

FRONT WIPER OPERATION LINKED WITH WASHER

  • BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the washer linked operating condition of the front wiper.
  • BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 2 times when the front washer switch OFF is detected.

Washer linked operating condition of front wiper

  • Ignition switch ON
  • Front washer switch ON (0.4 second or more)
  • IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
  • The front washer motor is grounded through the combination switch when the front washer switch is ON.

FRONT WIPER FAIL-SAFE OPERATION
When the front wiper auto stop circuit is malfunctioning, IPDM E/R performs the fail-safe function. Refer to See: Power and Ground Distribution\Power Distribution Module\Testing and Inspection\Initial Inspection and Diagnostic Overview\IPDM E/R (Intelligent Power Distribution Module Engine Room)\IPDM E/R.