Component Inspection

Component Inspection

Check BCM
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF" & wiper "AUTO"
3. Measure waveform between terminal "C3" of BCM and chassis ground.

Specification : Refer the specifications in fig. 2)









fig. 2) The Signal waveform of BCM output signal (BCM to Rain sensor)
4. Is the measured waveform within specifications ?





Check Rain sensor
1. Connect scantool to Data Link Connector (DLC).
2. Ignition "ON" & engine "OFF" & wiper "AUTO".
3. Measure waveform between terminal "4" of rain sensor and chassis ground while sprinkling water on front window glass.

Specification : Duty cycle > 66.7% ± 3%





fig. 3









fig. 3) Duty cycle of rain sensor as a function of sensor mode.
4. Is the measured waveform within specifications ?
** Duty cycle value will be fixed at 95.2% ± 3%, if fault 3 is detected.