Organizational Troubleshooting (continued)
TEST OR INSPECTION
Perform this step if power diodes (3CR7 through 3CR9). are suspected
a. If not already done, do steps 1.a through 1.c, and 1.k.
Use an analog multimeter (AN/PSM 4 or equivalent) on Xl00 scale
Measure resistance between relay socket pins Cl (positive
meter lead) and B1. If resistance is not between 400 and
1500 ohms, replace diode 3CR7 or wires (P3OC20 or P30N18)
between diode and relay socket.
c. Measure resistance between the mounting stud of diode 3CR8
(positive meter lead) and relay socket pin B2. If resistance
is not between 400 and 1500 ohms, replace diode 3CR9 or wires
(P33N18 or P33M18) between diodes and relay socket.
Measure resistance between mounting stud of 3CR8 (positive
between 500 and 2000 ohms, replace diode 3CR8.
e. If resistance measurements of steps b through d above were
good, power diodes are good. Install relay, and reconnect
GTE STARTER RELAY K4 MALFUNCTION.
If the GTE starter relay is suspected of malfunction, teat the relay as
a. Set all control panel switches to OFF.
Disconnect battery and lower control panel (paragraph
Remove terminal shield (2) from
contactor K4 (17).