Yamaha 2004 YXR660 Service Manual page 400

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4. Four-wheel drive relay 1
• Remove the four-wheel drive relay 1 from
the wire harness.
• Connect the pocket tester (Ω × 1) and the
battery (12 V) to the four-wheel drive relay
1 terminals.
Tester (+) lead →
Black/Yellow terminal 1
Tester (–) lead → Black terminal 2
Battery (+) terminal →
Brown/Red terminal 3
Battery (–) terminal →
Blue/Red terminal 4
Tester (+) lead →
Black/yellow terminal 1
Tester (–) lead → Brown/Red terminal 5
• Check the four-wheel drive relay 1 for con-
tinuity.
5. Four-wheel drive relay 2
• Remove the four-wheel drive relay 2 from
the wire harness.
• Connect the pocket tester (Ω × 1) and the
battery (12 V) to the four-wheel drive relay
2 terminals.
Tester (+) lead →
Brown/Black terminal 1
Tester (–) lead → Black terminal 2
Battery (+) terminal →
Brown/Red terminal 3
Battery (–) terminal →
Blue/Green terminal 4
Tester (+) lead →
Brown/Black terminal 1
Tester (–) lead → Brown/Red terminal 5
• Check the four-wheel drive relay 2 for con-
tinuity.
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2WD/4WD SELECTING SYSTEM
CONTINUITY
CONTINUITY
9 - 53
NO CONTINUITY
Replace the four-wheel drive relay 1.
NO CONTINUITY
Replace the four-wheel drive relay 2.
– +
ELEC