Engine Oil Pressure Gauge Always Low; Engine Oil Pressure Gauge Inaccurate Or Inoperative; Fuel Gauge Inaccurate Or Inoperative - GMC Chevrolet Camaro 1998 Service Manual

8-484 Instrument Panel, Gauges and Console Body and Accessories
· Engine Oil Pressure Gauge Always Low
Step Action Value(s} Yes No
Important: In order to avoid misdiagnosis, check for proper engine oil pressure before performing this diagnosis.
1. Disconnect the engine oil pressure sensor.
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1
2. Turn the ignition switch to the RUN position, with the
-
engine off.
Does the engine oil pressure gauge read high pressure?
Go to Step 2
Go to Step 3
2
Replace the engine oil pressure sensor.
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Is the repair complete? System OK
1. Test circuit 31 for a short to ground.
3
2. If circuit .31 is OK, replace the instrument cluster.
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Refer to IP Cluster Replacement.
Is the repair complete? System OK
Engine Oil Pressure Gauge Inaccurate or Inoperative
Step Action Value(s} Yes
:No
Important: In order to avoid misdiagnosis, check for proper engine oil pressure before performing thfs diagnosis.
Does the oil pressure gauge always read low pressure? · Go to Engine Oil
1
-
Pressure Gauge
Always Low Goto Step 2
1. Disconnect the oil pressure sensor.
2, Using IP tester J33431, connect one red lead to the
sensor connector terminal A and connect the other
red .lead to ground.
3. Turn the ignition switch to the RUN position, with
2
the engine off.
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4. While observing the oil pressure gauge, set the .•
resistance dial on the tester to
on, soon,
and
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1,000Q.
Does the oil pressure gauge move from O psi to 30 psi and
then to 80 psi? Goto Step 3 Go to Step 4
1. Check for a poor connection at the oil pressure
sensor.
3
2. If the connections are OK, replace the oil pressure
-
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sensor.
Is the repair complete? System OK
1. Check for an open or poor connection in circuit 31
between the oil pressure sensor and the instrument
4
cluster.
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-
2. If OK, replace the iristrument cluster. Refer to IP
Cluster Replacement.
Is the repair complete?
System OK
Fuel Gauge Inaccurate or Inoperative
Step Action Value(s} Yes No
Using a scan tool, command the powertrain control module
Go to OBD II
1
(PCM) to deflect the fuel gage to half full.
-
Diagnostic
Does the fuel gage read half full? System Check Go to Step 2
1. Inspect CKT 1936 between the instrument cluster and
the PCM for an open or poor connection.
2
2. If CKT 1936 is OK, replace the cluster. Refer to IP
-
-
Cluster Replacement.
Did you complete the repair? System OK
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