Pocket tester: 90890-03112.
Analog pocket tester: YU-03112-C.
1. Disconnect the relay from the wire harness.
2. Connect the pocket tester (Ω x 1) and battery (12 V) to the relay terminal as shown. Check the relay operation.
Out of specification → Replace.
![](https://motoinstruction.ru/img/yamaha/3/112285.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Relay operation: Continuity/No continuity (between «3» to «4»).
Relay unit (starting circuit cut-off relay)
![](https://motoinstruction.ru/img/yamaha/3/112286.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Result: Continuity/No continuity (between «3» to «4»).
Relay unit (fuel pump relay)
![](https://motoinstruction.ru/img/yamaha/3/112287.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Result: Continuity/No continuity (between «3» to «4»).
Headlight relay (on/off)
![](https://motoinstruction.ru/img/yamaha/3/112288.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Result: Continuity/No continuity (between «3» to «4»).
Headlight relay (on/off)
![](https://motoinstruction.ru/img/yamaha/3/112289.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Result: Continuity/No continuity (between «3» to «4»).
Headlight relay (dimmer)
![](https://motoinstruction.ru/img/yamaha/3/112290.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Result: Continuity/No continuity (between «3» to «4») (between «3» to «5»)
Radiator fan motor relay
![](https://motoinstruction.ru/img/yamaha/3/112291.jpg)
1. Positive battery terminal; 2. Negative battery terminal; 3. Positive tester probe; 4. Negative tester probe
Result: Continuity/No continuity (between «3» to «4»).