14. BATTERY/CHARGING SYSTEM/ A.C. GENERATOR AGIKITY 50 Regulator/Rectifier REGULATOR/RECTIFIER MAIN HARNESS CIRCUIT INSPECTION Remove the front covers. ( 2-2) Remove the regulator/rectifier 4P coupler and check for continuity between the wire harness terminals according to the following : Item (Wire Color) Judgment Between battery (red) Battery has and engine ground voltage Between ground (green) Continuity exists and engine ground Between lighting wire (yellow) and engine ground (Remove the A.C. generator resistor coupler and auto stator has bystarter coupler and resistance turn the lighting switch OFF for inspection) Between charging coil A.C. generator (white) and engine stator has ground resistance Red Yellow REGULATOR/RECTIFIER INSPECTION If the main harness terminals are normal, check the regulator/rectifier coupler for loose connection and measure the resistances between the regulator/rectifier terminals. · Do not touch the tester probes with your finger because human body has resistance. · Use the following specified testers for accurate testing. Use of an improper tester in an improper range may give false readings. White Green - Kowa Electric Tester - Sanwa Electric Tester - Kowa Electric Tester TH-5H Probe White Yellow Red Green · Proper range for testing: Probe(-) - Use XK range for Sanwa Tester White 3K-50K - Use X100 range for Kowa Tester Yellow 5K-100K · If the dry battery in the tester is weak, Red the readings will be incorrect. In this case, check the dry battery. Green 5K-50K · The Kowa tester readings are 100 times the actual values. Be careful during testing. Replace the regulator/rectifier if the readings are not within the specifications in the table. 14-5