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 stop position signal received from IPDM E/R with CAN communication.
  • BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval.
    JPLIA1256GB.JPG
NOTE:
Factory setting of the front wiper intermittent operation is the operation without vehicle speed. Front wiper intermittent operation can be set to the operation with vehicle speed by CONSULT-III. Refer to CONSULT-III Function (BCM - WIPER).
 
 Front wiper intermittent operation

BCM determines intermittent operation delay interval according to a wiper volume.

Unit: Second
Wiper intermittent dial position
Intermittent operation interval
Intermittent operation delay Interval (s)
1
Short







Long
0.4
2
2
3
5
4
8
5
12
6
16
7
21

 
 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 stop position 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.

JPLIA0410GB.JPG
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 washer pump is grounded through the combination switch when the front washer switch 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 Fail-safe.