Yamaha MBK MW125 2014 Service Manual

ELECTRICAL COMPONENTS8-6310.Install:• Center coverRefer to “GENERAL CHASSIS (1)” on page4-1.EAS30553CHECKING THE RELAYSCheck each switch for continuity with the pockettester. If the continuity reading is incorrect, re-place the relay.1. Disconnect the relay from the wire harness.2. Connect the pocket tester (Ω × 1) and battery(12 V) to the relay terminals as shown.Check the relay operation.Out of specification → Replace.Starter relayStarting circuit cut-off relayHeadlight relayEAS30558CHECKING THE IGNITION COILThe following procedure applies to all of the igni-tion coil.1. Check:• Primary coil resistanceOut of specification → Replace.▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼a. Remove the ignition coil from the spark plug.b. Connect the pocket tester (Ω × 1) to the igni-tion coil as shown.Pocket tester90890-03112Analog pocket testerYU-03112-C1. Positive battery terminal2. Negative battery terminal3. Positive tester probe4. Negative tester probeResultContinuity(between “3” and “4”)1. Positive battery terminalRBL/W G/YR R1 243BrL/Y L/GL/W43212. Negative battery terminal3. Positive tester probe4. Negative tester probeResultContinuity(between “3” and “4”)1. Positive battery terminal2. Negative battery terminal3. Positive tester probe4. Negative tester probeResultContinuity(between “3” and “4”)Primary coil resistance2.16–2.64 ΩPocket tester90890-03112Analog pocket testerYU-03112-C• Positive tester probe →red/white “1”• Negative tester probe →orange “2”+BrLBrY/B1234