8206noco.fm Page 184 Thursday, July 2, 1998 1:19 PM
SYMPTOM RELATED DIAGNOSTICS LOW OIL PRESSURE WITH DRIVER ALARM
Figure 302 — Diagnostic Procedure Flowchart
Test 1
Test 4
Checking for oil level
Checking for oil pressure while cranking
1. Check the oil level on the dipstick.
1. Turn the ignition key to the OFF position.
If there is oil on the dipstick, proceed to Test 2.
2. Connect a gauge that is known to be accurate to the oil pressure gallery or oil pedestal with a hose.
If there is no oil on the dipstick, inspect the engine for the cause of the oil loss.
Test 2 Looking for missing oil fittings
3. Disconnect the circuit breaker that supplies power from the electrical equipment panel to V-MAC II. 4. Turn the ignition key to the ON position and crank the engine.
1. Carefully inspect the engine for missing oil fittings. Look particularly around the turbo oil supply, the oil filter pedestal and the ECONOVANCE oil supply.
If the gauge registers oil pressure within 30 seconds of cranking, proceed to Test 8.
If there are no missing fittings, and no other obvious cause of pressure loss, proceed to Test 4.
If the gauge does not register oil pressure within 30 seconds of cranking, there is a problem with the oil pump drive, or other internal engine problem. Locate and repair the problem. Retest to be sure the problem has been corrected.
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