IC Regulator - Checking Procedure
Category 5Applicable Model/s ALL MODELS
Subject IC REGULATOR CHECKING PROCEDURE
Bulletin No. 058/83
Issued 11/9/83
Revised
IC Regulator Location:
DESCRIPTION
Checking procedure for the built-in IC regulator has been established to pin point the alternator problem. Basically, the alternator should be replaced as a unit through the exchange program. However, in case of the shortage of refurbished alternator, you may replace the IC regulator to minimize inconvenience of customers.
PARTS INFORMATION
Regulator N221 24 520
Regulator Terminals:
CHECKING PROCEDURE
1. Make sure the battery is fully charged.
2. Turn ignition key on to "Ig" position. If the alternator warning light is "off", the problem is likely caused by regulator. Leave the key in "Ig" position and take the following step to assure the cause.
3. Insert voltmeter between "F" terminal and nearest ground point.
Note:
a. "F" terminal position is shown in the figure.
b. Do not ground to the body of the alternator while positive probe of volt meter is inserted through the hole for "F" terminal.
If the volt meter reads;
1. 12 volts; Defective IC regulator.
2. 0 - 0.5 volts; Open field coil or insufficient contact of brushes.
3. 0.5 - 1.0 volts; Defective warning light bulb.
Insulators and Holders:
REPAIR PROCEDURE
Please refer to the Workshop Manual, Section "5", for IC regulator replacing procedure.
Note: Be sure the insulators are in the proper position as shown in the figure.
WARRANTY INFORMATION
Customer Comment Code: 5B (Electrical Malfunction)
Damage Code: 63 (Internal Failure)
Part No. of Main Cause: N221 24 520
Quantity: 1
Operation No.: 24520X-R-X
Labor Hour: 1.3 Hr. (for GLC) 1.0 Hr. (for 626 RX-7) 1.1 Hr. (for B2000)