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Home >> Ford >> 2003 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 7.3L Diesel >> Hard Start/No-Start Diagnostic Procedures >> Test 9A: Check VPWR While Cranking >> Possible Causes

Possible Causes

NOTE: Battery voltage less than 9.5 volts can cause scan tool to reset. If scan tool resets during a self-test or while PID monitoring, it may be necessary to install a battery charger to maintain correct voltage.
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