

Terminal voltage check with a low battery voltage will lead to erroneous diagnosis.

Otherwise, accurate measurements may not be obtained and personal injury may result.
Electrical circuit inspection procedure
While there are various methods for electrical circuit inspection, described here is a general method to check for open and short circuit using an ohmmeter and a voltmeter.
Ecm / various sensors
Open circuit checkRear brake pedal construction
Footrest bracket no. 2
Footrest bracket no. 1
Rear brake peda
Footrest holder
Footrest
35 N·m (3.5 Kgf-m,
25.5 Lbf-ft)
23 N·m
(2.3 Kgf-m, 16.5 Lbf-ft)
18 N·m
(1.8 Kgf-m, 13.0 Lbf-ft)
Apply grease.
Apply thread lock to the ...
Front brake master cylinder assembly removal and installation
Removal
Drain brake fluid. Refer to “brake fluid replacement” .
Disconnect the front brake light switch coupler (1).
Place a rag underneath the brake hose union bolt (2)
on the master cylinder to catch any spilt brake fluid.
Remove the brake hose union bolt (2).
...
Voltage check
If voltage is supplied to the circuit being checked, voltage
check can be used as circuit check.
With all connectors/couplers connected and voltage
applied to the circuit being checked, measure
voltage between each terminal and body ground.
If measurements were taken as shown ...