Disconnect the negative (-) battery terminal.
Remove the crash pad lower panel.
(Refer to Body group - "Crash pad")
Remove the junction box.
Check for continuity between the terminals.
There should be continuity between the No.2 in the I/P-F and No.17 terminal in the I/P-B when power and ground are connected to the No.2 terminal in the I/P-H and No.17 terminal in the I/P-B.
There should be no continuity between the No.2 terminal in the I/P-F and No.17 terminal in the I/P-B when power is disconnected.