TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
24. Proximity Switches - Tophandler and Cab.
All proximity switches on the RTCH operate and
are connected the same way. Many non-error code
problems may be caused by a faulty proximity
switch or the proximity switch signal not reaching
its destination. DIAG ATTACHMENT screens
3(16), 4(16), 5(16), and DIAG EXTRA FUNCT
8(13) can be used to verify the signal inputs into the
ECU (790) or (791).
All Proximity Switches - General operation. Each
proximity switch has three wires:
- Brown = voltage (24V) input
- Blue = ground
- Black = signal; voltage (24V) output when activated
Activation = metal within 5 mm of end of proximity
switch.
Indicator = small LED comes on when activated.
Check proximity switches:
Tophandler Proximity
Switches
1. Voltage (24V) to proximity
a. Reset circuit breaker as
switches comes from circuit
required.
breaker F42 (2) in the
b. Replace damaged or faulty
tophandler junction box. The
circuit breaker (WP 0074 00).
main grounding point is 37-54 c. Repair or replace damaged
wires or connectors (WP 0113
00-24).
00).
2. Check voltage (24V) at X182 a. If no voltage (24V) is found,
between pins 4 and 5 (WP
check continuity of wires
A181A, A181B, and wires 4
on.
and 5 in the X181 to X182
cable (WP 0048 00-24).
b. Repair or replace damaged
wires or connectors (WP 0113
00).
c. Replace X181 to X182 cable
(WP 0113 00).
0007 00-57
