Yamaha Grizzly550 User Manual page 361

2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 9-19.
OK ↓
Replace the meter assembly or ECU.
The coolant temperature warning light fails to come on.
1. Check the coolant temperature sen-
sor.
Refer to "CHECKING THE COOL-
ANT TEMPERATURE SENSOR"
on page 9-95.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 9-19.
OK ↓
Replace the meter assembly or ECU.
The fuel level indicator fails to come on.
1. Check the fuel sender.
Refer to "CHECKING THE FUEL
SENDER" on page 9-93.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 9-19.
OK ↓
Replace the meter assembly.
The speedometer fails to operate.
1. Check the speed sensor.
Refer to "CHECKING THE SPEED
SENSOR" on page 9-94.
OK ↓
SIGNALING SYSTEM
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the coolant temperature sensor.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the fuel pump assembly.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the speed sensor.
9-24
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