DISTRIBUTION SYSTEMS - ELECTRICA L POWE R SYSTEM
Alternator - Testing (A.30.A.82 - G.40.A.20)
435, 445, 445CT
NOTE: For wirin g diagram refer to Wiring harness - Electrical schematic frame 01 (A.30.A.88 - C.20.E.01)
N°
Te st Point Expected Result
Other Result (Possible Cause)
1
Terminal for wire 120A (R) to ground
12 volts
Check wire 120 A (R) be tween
the alternator B+ terminal and the
starter motor and solenoid. Also
check the battery.
2
Turn the key switch to the ON
position.
Termin al fo r wire 121A (Y) to ground.
Approximately 1.1 volts
Check the circuit from the ON
terminal of the ke y switch, through
the reverse polarity diode to the 50
ohm field resistor. Check the 50
ohm resistor. Also check the circuit
from the resistor to the alternator.
1 04/05/2005
A.30.A / 100