Vibration Push Switch Faulty.
Touch positive (+) probe of multimeter to terminal.
Touch negative (-) probe of multimeter to other terminal.
Press button of vibration push switch several times.
If zero ohms followed by infinite ohms are not measured as button is pressed and pressed
If zero ohms followed by infinite ohms are measured as button is pressed and pressed again,
go to next malfunction.
Figure 2. Vibration Push Switch Wiring.