DIODE
ASSEMBLY
COVER
REAR JUNCTION
BOX
C
L
O
S
E
O
P
E
N
DIODE
ASSEMBLY
CONNECTOR
6
5
4
3
2
1
7
8
9
10
11
12
TERMINAL
1
WIRE 1003C
1435
1435
1008B
1012B
1680C
1678C
1003C
1004C
Figure 9.
Diode Assembly Connector, Rear Junction Box, and Wire 1003C.
3.
Connect button probe cable red lead to wire 1003C at diode assembly connector, terminal 1.
4.
Connect button probe cable black lead to wire 1003C at rear junction box.
5.
Perform ICE Test 91.
6.
Meter should display a reading less than 200 ohms.
CONDITION/INDICATION
Is continuity measured across wire 1003C between diode assembly connector, terminal 1 and the rear junction
box?
DECISION
Yes - Replace diode assembly (WP
0059). Go to (Step 11 - Do stoplights operate?) to verify problem is solved.
No - Go to (Step 10 - Can trailer main harness wire 1003C be repaired?).
TM 9-2330-342-23&P
0012
0012-10