Operation CHARM: Car repair manuals for everyone.

Alternator

Generator Specifications
Voltage at Terminal L
Ignition Switch ON Approximately 1.0 V
Idle 13.0-14.0 V
Standard Voltage
Terminal Ignition Switch: ON Idle
B B+
B+: Battery Positive Voltage
B+
B+: Battery Positive Voltage
L Approximately 1.0 V Approximately 1.0 V less than B+
B+: Battery Positive Voltage
S B+
B+: Battery Positive Voltage
B+
B+: Battery Positive Voltage
IG B+
B+: Battery Positive Voltage
B+
B+: Battery Positive Voltage
Standard Current (Referance)
The values are measured with the battery fully charged. As the battery discharges, the current becomes greater.
Electrical Load Idle 2,000 RPM
OFF Approximately 11 A Approximately 12 A
ON
When the measuring condition is "electrical load ON", turn all the following electrical systems on. Headlights (high Beam). A/C Max. Brake Light Cooling Fan Condenser Fan
Approximately 67 A Approximately 78 A
Rotor
Rotor Resistance
Between Slip Rings
2.7-3.1 Ohms
At 20 degrees C (68 degrees F)
Brushs
Brush Length
Standard 0.41 in
Minimum 0.06 in