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Intermittent Wiper Relay Circuit On-Vehicle Inspection

  1. Disconnect negative cable (-) at battery.
  2. Disconnect combination switch lead wire coupler.
  3. Turn the front wiper switch to INT position.
  4. Turn the intermittent time control switch to FAST position.
  5. Connect battery positive terminal to terminal "B3" and battery negative terminal to terminal "E".
  6. 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: Inspecting Intermittent Wiper Relay Circuit
    G03632837Courtesy of SUZUKI OF AMERICA CORP.
  7. Connect terminal "As" and terminal "B3" by a jumper wire. Then connect terminal "B3" end to terminal "E". Observe the voltmeter voltage drops to 0 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: Identifying Voltage Rise With Time
    G03632838Courtesy of SUZUKI OF AMERICA CORP.