Testing and Inspection for Wiper Control Module
Wiper Control Module: Testing and Inspection
Input Signal to ECU Test
Fig.76 Input Signal Testing
1. Ensure ignition switch is in Off position, then connect test equipment.
2. If scan tool is not used, operate (turn On/Off) each switch function, a voltage pulse indicates that a correct signal has been sent to the Electronic
Control Unit (ECU).
3. If scan tool is used, operate (turn On/Off) each switch function, a BUZZ or PEEP tone from the Scan Tool indicates that a correct signal has been
sent to the ECU.
