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BATTERY DISCO
Trouble Shooting
Problem
Chassis Relay won't
disengage (unlatch),
BD2 & BD3
MODELS ONLY
INTELLITEC
Possible
Cause / Solution
OTE: The BD2 & BD3 panels have an interlock
that will not allow chassis battery bank to be
"unlatched" while ignition is on. This feature
should not be defeated as high voltages from the
STEP 52
alternator can damage sensitive electronics
Is engine running / ignition is on, turn engine off /
switch off ignition and retest.
If the panel fails retests then go to step 53.
Check fuses on relay. If not blown go to step 54, if
STEP 53
blown replace with same size fuse and retest. If fuse /
fuses re-blow go to step 54.
Disconnect harness from battery disconnect
panel inside of RV, replace fuse, if fuse re-blows
either attempt to find damage in the harness
STEP 54
and repair or replace harness, (see P# 1 link
page 7). If fuse doesn't blow then go to step 55.
Check battery voltage, the voltage must be greater
than 10.5 Volts DC for the latching relay to close or
STEP 55
open. If batteries are below 10.5 Volts DC, charge
batteries and retest. If the batteries are charged and
are above 10.5 Volts DC go to step 56.
Remove battery disconnect panel from cabinet /
console and with a multi-meter set on DC voltage,
measure between the blue wire at pin # 5 and the
STEP 56
black wire on pin # 12. The voltage should read 0
VDC, if your reading a voltage of 10.5 VDC or
greater go to step 57. If the voltage reading is 0
VDC then go to step 58.
OTE: The BD2 & BD3 panels have an interlock
that will not allow the chassis battery bank to be
"unlatched" while ignition is on.
Disconnect the plug from the battery disconnect
STEP 57
panel, re-measure between the blue wire and the
black wire. If there is no voltage, replace the
battery disconnect panel, refer to PARTS LINK # 2
(page 8). If there is voltage on the blue wire, TBSH
the ignition circuit as the ignition circuit is still on
and is not being controlled by the ignition switch.
17
ECT
PDX RV LLC
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