Keyless Entry Receiver and Its Circuit Inspection

1. Check that the voltage between the following terminals and body ground are specifications under each conditions. If check result is not as specified, check applicable circuit for open or short. If circuit is normal, proceed to next step.
   Fig 1: Checking Voltage Between Terminals And Body Ground

   Courtesy of SUZUKI OF AMERICA CORP.
   TERMINAL SPECIFICATION
   
   

   Terminal	Circuit	Specification	Condition
   L44-1	Power source	Figure [A]	Push "Lock" or "Unlock" button on transmitter.
   		0 - 1 V	Except the above-mentioned condition.
   L44-3	Lock/Unlock output signal circuit	Figure [A]	Push "Lock" or "Unlock" button on transmitter.
   		0 - 1 V	Except the above-mentioned condition.
   L44-4	Ground	0 - 1 V	-

Oscilloscope setting 

CH1: 2V/DIV

CH2: 2V/DIV

TIME: 200 ms/DIV

Fig 2: Signal Out Put Graph

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1. Recheck keyless entry receiver as follows.
   1. Substitute a known-good keyless entry receiver.
   2. Record key code referring to PROGRAMMING TRANSMITTER CODE FOR KEYLESS ENTRY SYSTEM (OTHER THAN KEYLESS START MODEL) .
   3. Recheck keyless entry receiver system.