8206noco.fm Page 180 Thursday, July 2, 1998 1:19 PM
SYMPTOM RELATED DIAGNOSTICS LOW COOLANT LEVEL
Figure 298 — Diagnostic Procedure Flowchart
When performing electrical tests, it is important to wiggle wires and connectors to identify intermittent connection problems.
Test 1 Checking lamp and alarm functions at start-up 1. Turn the ignition key to the ON position. The electronic fault lamp and engine shutdown lamp and alarm should all come ON for approximately 2 seconds and then go OFF.
If the electronic fault lamp does not come ON for approximately 2 seconds, follow the test procedures found in the Electronic Malfunction Lamp diagnostic procedure (code 5-9 or 5-10). If the shutdown lamp and driver alarm do not come ON for approximately 2 seconds, follow the test procedures found in the Driver Alarm diagnostic (code 5-7 or 5-8).
If the electronic fault lamp comes ON but does not turn OFF, determine the blink code and proceed to that section of the manual. If there is no blink code, follow the test procedures provided in the Electronic Malfunction Lamp diagnostic (code 5-9 or 5-10). If the shutdown lamp and driver alarm come ON but do not turn OFF, follow the test procedures found in the Driver Alarm diagnostic (code 5-7 or 5-8). If the lamps and alarm work properly, proceed to Test 2.
Test 2 Checking lamp and alarm functions with low coolant 1. Drain some coolant from the radiator so that the coolant level is below the level on the probe.
If the fault lamp, shutdown lamp and driver alarm come ON, the system is working properly. Refill the radiator. Retest to be sure the problem has been corrected. If the fault lamp, shutdown lamp and driver alarm do not come ON, proceed to Test 5.
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