Yamaha WR450F(Y) 2009, Owner'S Service Manual

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7-21
SIGNALING SYSTEM
SIGNALING SYSTEM
INSPECTION STEPS
If the speedometer will not operate, use the following inspection steps.
*1 marked: Refer to "CHECKING AND CHARGING THE BATTERY" section in the CHAPTER 3.
• Remove the following parts before inspection.
1. Headlight
• Use the following special tools in this inspection.
*1 Check battery. No good → Recharge or replace.
OK
↓
Check each coupler and wire connection. No good → Repair or replace.
OK
↓
Check multi-function display. (Input voltage) No good → Replace wire harness.
OK
↓
Check multi-function display. (Output voltage) No good → Replace multi-function display.
OK
↓
Check speed sensor. No good → Replace.
Pocket tester:
YU-3112-C/90890-03112