8-36
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 8-29.
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-
29.
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 8-62.
NG→ Replace the fuel pump assembly.
OK↓
2. Check the entire signaling sys-
tem’s wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-29.
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 8-63.
NG→ Replace the coolant temperature sensor.
OK↓
2. Check the entire signaling sys-
tem’s wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-29.
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 8-56.
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