Troubleshooting

152 RENR2696-01
Troubleshooting Section
Repair: If the problem still exists, t emporarily
connect a test E
CM. Remove all jumpers and
replace all connectors. The test ECM must be
programmed with the same parameters as the
suspect ECM. R
echeck the system for active
diagnostic codes and repeat the Test Step. If the
problem is resolved with the test ECM, reconnect
the suspect E
CM. If the problem returns with the
suspect ECM, replace the suspect ECM.
Verify that t
he repair eliminates the problem.
STOP.
i01798870
Engine Oil Level Switc h Circuit
-Test
System Operation Description:
The L ow Oil L
evel Switch signals the Electronic
Control Module (ECM) if the oil level falls below a
predetermined level in the oil pan. The ECM warns
the operato
r of possible engine damage. The switch
uses a float that closes the circuit when the oil level
is above a predetermined level.
The ECM may modify the operation of the engine in
the event of low oil level. The ECM cannot determine
if the oil l
evel switch or associated components have
failed.
g00883523
Illustration 68