Oil Pressure Switch; Testing - Honda CR-V 1997 Service Manual

Oil Pressure Switch
Testing
1. Remove the YEL/RED wire from the engine oil pres-
sure switch.
2. Check for continuity between the positive terminal
and the engine (ground). There should be continuity
with the engine stopped. There should be no conti-
nuity with the engine running .
VEL/RED WIRE
(Covered with
insulation)
POSITIVE TERMINAL
ENGINE OIL
PRESSURE SWITCH
18 N'm 11.8 kgf·m,
13
Ibf.ftl
Apply liquid sealant
to the threads.
3. If the switch fails to operate, check the engine oil
level. If the engine oil level is OK, check the engine
oil pressure.
Oil Pressure
Testing
If the oil pressure warning light stays on with the engine
running. check the engine oil leveL If the oil level is
COf-
rect:
1. Connect a tachometer.
2. Remove the engine oil pressure switch, and install
an oil pressure gauge.
ADAPTER OIL PRESSURE GAUGE
I1/S" - 28, BSTP) (Commerciallv available)
(Commercially available )
ENGINE OIL PRESSURE
SWITCH MOUNTING
HOLE
3. Start the engine. Shut it off immediately if the gauge
registers no oil pressure, Repair the problem before
continuing.
4. Allow the engine to reach operating temperature (fan
comes o n
at least twice). The pressure should be:
Engine Oil Tempe,atu,e: 176°F (80°C)
Engine
Oil Pressure:
At Idle: 70 kP. (0.7 kgf/cm', 10 psil
minimum
At 3,000 rpm: 340 kPa (3.5 kgf/cm', 50
psi)
minimum
5. If oil pressure in not within specifications, inspect the
oil pump (see page 8·91.
8-7