EDI DIAGNOSIS SERVICE MANUAL NUMBER 22
Page 5E-14 90-860074--1 FEBRUARY 2002
Diagnosis of Driveability Concerns
If a driveability concern still exists after following the diagnostic circuit checks and reviewing
Troubleshooting, an out-of-range sensor may be suspected. Because of the unique design
of the EDI system, fail-safes have been incorporated into the ECM to replace a sensed value
with a default value in the case of a sensor malfunction or sensor wiring concern. By allowing
this to occur, limited engine performance is restored until the vessel is repaired. A basic
understanding of sensor operation is necessary in order to diagnose an out-of-range
sensor.
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