ZEST BOLT Service Manual

ELECTRICAL 21 12.6 ALTERNATOR SPECIFICATION 90A for Revotron Engine 105A for Quadrajet Engine 12.6.1 CHECKS ON ENGINE START THE ENGINE a. Battery charge indicator lamp from Instruments Cluster does not glow: Check if bulb is faulty. Checks fuse continuity. Replace if necessary. Connect an ammeter of suitable range in series with the positive terminal of the battery. Raise the engine speed to near about 2000 rpm and switch ‘ON’ the Head Lamp, Parking Lamp, Heater, Tail Lamp and other electrical loads. Rated current output should be reached without voltage dropping to 13 volts. Rated current output if not reaching, remove the alternator for thorough checks. Reduce the engine speed to near about 1500 rpm, and ensure that the ammeter reading falls around 3 to 5 Amps. Check the voltmeter reading. It should read between 13.8 to 14.2 volts. If not, remove the alternator and check the regulator. b. Warning lamp continues to glow: Check the belt tension. If found slack, adjust the belt deflection to the specified value. Repeat test. REMOVAL AND REFITMENT OF ALTERNATOR: (Refer Engine section) 12.6.2 DIAGNOSTIC INFORMATION AND PROCEDURES FOR ALTERNATOR & BATTERY CONDITION POSSIBLE CAUSES CORRECTION/REFERENCE ITEM Battery getting discharged Leakage current is high due to extra accessories fitted on the vehicle. Measure the leakage current. If it is greater than 15mA, disconnect the idle power consuming accessories. Battery not getting charged 1. Alternator belt loose 2. Battery terminals loose 3. Battery terminals corroded 4. Alternator voltage regulator setting Wrong 5. Idle speed of engine too low Tighten belt Tighten the terminals Clean the terminals Check alternator output voltage. It should be between 13.5 V and 14.5 V. Otherwise replace the regulator with a genuine spare. Adjust engine idle speed