Yamaha 2004 YXR660 Service Manual page 504

SIGNALING SYSTEM (for special edition models)
*
2. Diode 2
• Remove the diode from the coupler.
• Connect the pocket tester (Ω × 1) to the
diode terminals as shown.
• Check the diode for continuity as follows.
Tester (+) lead →
Blue/Black terminal 1
Tester (–) lead →
White/Blue terminal 2
Tester (+) lead →
White/Blue terminal 2
Tester (–) lead →
Blue/Black terminal 1
This circuit is not faulty.
Continu-
ity
No conti-
nuity
CORRECT
– 49 –
1
2
NOTE:
When you switch the tester's positive and neg-
ative probes, the readings in the left chart will
be reversed.
INCORRECT
Replace the diode 2.
– +
ELEC
L/B
W/L