Electrical System Troubleshooting Charts
PS S5.4 5460
F-code Section C-code
Version no T-code
001 OE35
203
Service Manual 1996-10-15
© BT Products
Electrical Syste
Troubleshooting Charts
The following troubleshooting charts describe a course of
testing and repair for each problem listed. If the given test is
NOT
successful, perform the repair listed with the test. If the
given test
IS
successful, move on directly to the next test; or
follow the special instructions given.
1.1 Emergency Disconnect Contactor
1.1.1 Emergency disconnect contactor will not close.
Conditions for test: Battery plugged, battery fully
charged, key switch in start position.
Check for battery voltage at:
1. Positive side of fuse 3.
0 volts, repair open wiring from battery to fuse
3.
2. Negative side of fuse 3.
0 volts, replace fuse 3.
3. Positive side of key switch.
0 volts, repair open wiring from fuse 3 to key
switch.
4. Negative side of key switch, wire #14 (ON
position).
0 volts, replace key switch.
5. Positive side of start switch
0 volts, repair open wiring from key switch to
NOTE!
Troubleshooting chart is to be used in
conjunction with wiring schematic for the
truck.
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