Int (Intermittent) Operation
Wiper intermittent operation delay interval is determined from the intermittent wiper dial position inputs. During each intermittent operation delay interval, the BCM sends a front wiper request signal to the IPDM E/R to operate the wipers.
When the ignition switch is in the ON or START position, and the front wiper switch is turned to the intermittent position, the BCM detects a front wiper (intermittent) ON signal by means of the BCM wiper switch reading function.
BCM then sends front wiper (intermittent) request signal through the CAN communication lines
- from BCM terminals 39 and 40
- to IPDM E/R terminals 40 and 41.
When BCM determines that combination switch status is front wiper intermittent ON, it performs the following operations.
- BCM detects ON/OFF status of intermittent wiper dial position
- BCM calculates operation interval from wiper dial position.
- BCM sends a front wiper request signal (INT) to IPDM E/R at calculated operation interval.
When IPDM E/R receives the front wiper request signal (INT), it supplies ground to energize the front wiper relay. It then sends auto-stop signal to the BCM and conducts intermittent front wiper motor operation.
With wiper switch turned OFF, wiper motor will continue to operate until wiper arms reach windshield base. When the wiper arms are not located at base of windshield with wiper switch OFF, ground is supplied
- from IPDM E/R terminal 33
- to front wiper motor terminal 1, in order to continue wiper motor operation at low speed.
When the wiper arms reach base of windshield, front wiper motor terminals 5 and 2 are connected, and ground is supplied
- to IPDM E/R terminal 38
- through front wiper motor terminals 5 and 2
- through grounds E9, E15 (all models) and E24 (with MR20DE).
Then the IPDM E/R sends auto stop operation signal to BCM with CAN communication line.
When the BCM receives auto-stop operation signal, BCM sends wiper stop signal to IPDM E/R with CAN communication line.
IPDM E/R stops wiper motor. Wiper motor will then stop wiper arms at the STOP position.