Yamaha XSR900 2022, Service Manual

Page: 373 / 726

8-26
SIGNALING SYSTEM
The oil pressure and coolant temperature warning light remains on after the engine is started.
1. Check the entire signaling sys-
tem’s wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-21.
NG
→
Properly connect or replace the wiring har-
ness.
OK
↓
2. Measure the engine oil pressure.
Refer to “MEASURING THE EN-
GINE OIL PRESSURE” on page 3-
26.
NG
→
Check the engine oil leakage, oil viscosity,
oil seal, oil filter, or oil pump.
OK
↓
Replace the oil pressure switch.
The fuel level warning light fails to come on.
1. Check the fuel sender.
Refer to “CHECKING THE FUEL
SENDER” on page 8-46. NG
→
Replace the fuel pump assembly.
OK
↓
2. Check the entire signaling sys-
tem’s wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-21.
NG
→
Properly connect or repair the signaling
system’s wiring.
OK
↓
Replace the meter assembly.
The oil pressure and coolant temperature warning light fails to come on.
1. Check the coolant temperature
sensor.
Refer to “CHECKING THE COOL-
ANT TEMPERATURE SENSOR”
on page 8-47.
NG
→
Replace the coolant temperature sensor.
OK
↓
2. Check the entire signaling sys-
tem’s wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-21.
NG
→
Properly connect or replace the wiring har-
ness.
OK
↓
Replace the ECU or meter assembly.
Refer to “REPLACING THE ECU (En-
gine Control Unit)” on page 8-41.