07/11/02 09:11:18 61TA0000_080_0004
Engine Lubrication
Symptom Troubleshooting Index
Symptom
Excessive engine oil
consumption
Low oil pressure indicator does
not come on with the ignition
switch in ON (II)
Low oil pressure indicator stays
on
8-4
TA08AE4A32200000000HBAT01
Diagnostic procedure
1.
Verify that the engine oil filler cap, oil drain bolt,
and oil filter are tight.
2.
Check for oil leaks.
3.
Check for worn valve guide(s):
•
All models except PZEV (see page 6-39)
•
PZEV model (see page 6-91)
or worn valve stem seal(s):
•
All models except PZEV (see page 6-39)
•
PZEV model (see page 6-91)
4.
Check for damaged or worn piston ring(s)
(see page 7-24).
5.
Check for damaged or worn engine internal parts
(cylinder wall, pistons, etc.) (see page 7-18).
1.
Do the low oil pressure indicator circuit
troubleshooting (Open) (see page 8-6).
2.
Test the oil pressure switch (see page 8-8).
1.
Check the engine oil level.
2.
Do the low oil pressure indicator circuit
troubleshooting (Short) (see page 8-7).
3.
Test the oil pressure switch (see page 8-8).
4.
Check the engine oil pressure (see page 8-9).
5.
Check the oil filter for clogging.
6.
Check the oil screen for clogging.
7.
Check the relief valve (see page 8-15).
8.
Test the oil pump (see page 8-17).
Also check for
An open in the wire
between the engine
control module (ECM)/
powertrain control
module (PCM) and the
oil pressure switch
A wire shorted to
ground between the
ECM/PCM and the oil
pressure switch