Intermittent Wiper Relay Circuit On-Vehicle Inspection

Disconnect negative cable (-) at battery.
Disconnect combination switch lead wire coupler.
Turn the front wiper switch to INT position.
Turn the intermittent time control switch to FAST position.
Connect battery positive terminal to terminal "B3" and battery negative terminal to terminal "E".
Connect voltmeter positive lead to terminal "+1" and negative lead to terminal "E". Check that the voltmeter indicates the battery voltage (10-14 V).

Fig 1: Connecting Voltmeter To Terminal "+1" To Terminal "E"
Courtesy of SUZUKI OF AMERICA CORP.
Connect terminal "As" and terminal "B3" by a jumper wire. Then connect terminal "B3" end to terminal "E". Observe the voltmeter voltage drops to o V right after connecting the jumper wire from terminal "B3" to "E". Then the voltage rises to battery voltage (10-14 V) within the time shown in the table below.

Fig 2: Connecting Terminal "As" & Terminal "B3" With Jumper Wire
Courtesy of SUZUKI OF AMERICA CORP.

Fig 3: Intermittent Time Control Switch Chart
Courtesy of SUZUKI OF AMERICA CORP.