TM 5-3825-270-23&P
0037
4.
Connect red multimeter probe to grey wire on tachometer.
GREY
PULSE ADJUSTMENT
WIRE
DIAL
RED
WIRE
BLACK
WIRE
Figure 8. Tachometer Grey Wire - Step 5.
5.
With the aid of an assistant using jumper wire, connect black multimeter probe to clear wire harness connector
on alternator.
CLEAR WIRE
HARNESS
CONNECTOR
Figure 9. Clear Wire Harness Connector - Step 5.
6.
Note multimeter reading.
CONDITION/INDICATION
Are less than 200 ohms measured between grey wire on tachometer and clear wire on alternator?
DECISION
No - Go to step 6. (Step 6 - Are less than 200 ohms measured from grey wire on tachometer to interconnect
terminal strip terminal 17?)
Yes - Replace tachometer. (WP 0102) If problem persist, replace alternator. (WP 0081) Verify problem is
solved. (Step 7 - Does tachometer operate normally?)
STEP 6
Are less than 200 ohms measured from grey wire on tachometer to interconnect terminal strip terminal 17?
1.
Ensure multimeter is set to measure continuity.