1. DTC B1706[A3] description
The controller is built into the flat blade type wiper motor, and it communicates the control information and diagnosis information with the BCM via the LIN communication circuit. The flat blade type wiper motor has the following circuits.
- Ignition power supply circuit
- Wiper ON circuit
- LIN communication circuit
- Low reference circuit
The wiper motor monitors the ignition power supply voltage, and it sends the ignition power supply voltage status to the BCM via the LIN communication circuit. If the BCM receives the signal of the ignition power supply circuit high voltage from the wiper motor, the DTC is set.
2. Condition for setting DTC B1706[A3]
- The BCM receives the signal of the ignition power supply circuit high voltage from the wiper motor for 3 seconds or more.
3. Action taken when DTC B1706[A3] sets
- If a malfunction is detected during the automatic wiper operation, the wiper is continuously controlled with the wiper request sent before the malfunction is detected.
- If the ignition switch is turned OFF or if the windshield wiper switch is set to the AUTO position again after a malfunction is detected during the automatic wiper operation, the wiper is intermittently controlled.
- Current and past failures are set.