TM 5-3825-270-23&P
0058
DECISION
No - Replace red wire between LIGHTS switch and ENGINE OFF/BATTERY DRAIN indicator. (WP 0099) Verify
problem is solved. (Step 6 - Does cab control box LIGHTS switch operate?)
Yes - Go to step 4. (Step 4 - Are less than 200 ohms measured on black wire at cab control box LIGHTS switch
to known good ground?)
STEP 4
Are less than 200 ohms measured on black wire at cab control box LIGHTS switch to known good ground?
1.
Push in EMERGENCY STOP switch to off position. (TM 5-3825-270-10)
2.
Disconnect batteries. (WP 0085)
3.
Set multimeter to measure continuity.
4.
Connect red multimeter lead to black wire at cab control box LIGHTS switch.
RED WIRE
CAB CONTROL BOX
LIGHTS SWITCH
BLACK WIRE
BACK OF CAB
CONTROL BOX
Figure 5. Cab Control Box Lights Switch - Step 4.
5.
Connect black multimeter lead to known good ground.
6.
Note multimeter reading.
CONDITION/INDICATION
Are less than 200 ohms measured on black wire at cab control box LIGHTS switch to known good ground?
DECISION
No - Go to step 5. (Step 5 - Are less than 200 ohms measured at UPIK harness connector pin H to known good
ground?)
Yes - Replace cab control box LIGHTS switch. (WP 0210) Verify problem is solved. (Step 6 - Does cab control
box LIGHTS switch operate?)
STEP 5
Are less than 200 ohms measured at UPIK harness connector pin H to known good ground?
1.
Disconnect water distributor UPIK electrical harness from prime mover.