Main Relay Inspection

Disconnect negative (-) cable at battery.
Remove main relay (1) from its connector.

Fig 1: Removing Main Relay From Main Relay Connector
Courtesy of SUZUKI OF AMERICA CORP.
Check resistance between each two terminals. If check results are as specified, proceed to next operation check. If not, replace main relay.
Main relay resistance

Between terminals "A" and "B": (Infinity)

Between terminals "C" and "D": 160-240 ohm (at 20°C (68°F))

Fig 2: Checking Resistance Between Two Terminals
Courtesy of SUZUKI OF AMERICA CORP.
Check that there is continuity between terminals "A" and "B" when battery is connected to terminals "C" and "D".
If malfunction is found, replace main relay.

Fig 3: Checking Continuity Between Terminals
Courtesy of SUZUKI OF AMERICA CORP.