Plymouth Workshop Manuals
PB 150 V8-318 5.2L VIN T 2-BBL (1983)
Starting and Charging > Charging System > Voltage Regulator > Component Information > Testing and Inspection > Bosch & Nippondenso Alternators > Page 2799
Voltage Regulator: Testing and Inspection
Voltage Regulator Test
Fig. 3 Electronic voltage regulator test (Typical)
Fig. 4 Regulator test specification chart
Clean battery terminals, then connect positive lead of a suitable voltmeter to battery positive post and the negative lead to a suitable ground.
Connect an engine tachometer, then start and operate engine at 1250 RPM with all lights and accessories in the "off" position.
Note voltmeter readings, then refer to voltage chart. An ammeter reading registering an immediate charge, then gradually returning to normal, is
If voltage is fluctuating or below limits, proceed as follows:
a. Ensure voltage regulator has a proper ground through regulator case, mounting screws and chassis.
If steps a through d are satisfactory, replace voltage regulator.
If voltage is above limits, proceed as follows:
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