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17 

INTELLITEC 

PDX RV LLC 

 

BATTERY DISCOECT 

Trouble Shooting  

Problem 

Chassis Relay won't 
disengage (unlatch), 

BD2 & BD3 
MODELS ONLY 

Possible 
Cause / Solution 

Check fuses on relay. If not blown go to step 54, if 
blown replace with same size fuse and retest. If fuse / 
fuses re-blow go to step 54. 

STEP 52 

Disconnect harness from battery disconnect 
panel inside of RV, replace fuse, if fuse re-blows 
either attempt to find damage in the harness 
and repair or replace harness, (see P# 1 link 
page 7). If fuse doesn’t blow then go to step 55. 

STEP 53 

STEP 54 

Check battery voltage, the voltage must be greater 
than 10.5 Volts DC for the latching relay to close or 
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. 

STEP 55 

(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 
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. 

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 
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. 

STEP 57 

(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 
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. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for Battery Disconnect BD0

Page 1: ...es of an RV or boat With a touch of a remote switch the batteries will be com pletely disconnected preventing unwanted drain when the RV boat are put into storage The heart of the system is a unique l...

Page 2: ...rminal of the relay When this is done the plunger is pulled into the coil and the contacts are connected While this happens the rod magnet suspended above the plunger is attracted opposite poles attra...

Page 3: ...larity applied to coil Current flowing in coil Plunger pulled in to coil Rod magnet attracted to plunger by opposite polarity Relay Closed Power removed from coil Magnet blocks plunger from coming up...

Page 4: ...ty of the coil is reversed the rod magnet is repelled like poles oppose and swings out of the way See FIGURE 3 When the voltage is removed from the coil the plunger gets pushed upwards by the return s...

Page 5: ...pulled in Rod magnet opposed by plunger same polarity magnetic field swings out to side of housing Relay Open Power removed No current flowing in coil Plunger pushed up by return spring while magnet...

Page 6: ...to prevent the battery from being acci dently opened when the engine is running A typical circuit is shown in FIGURE 5 and FIGURE 6 The switches are each double pole double throw momentary center off...

Page 7: ...inside of RV replace fuse if fuse re blows either attempt to find damage in the harness and repair or replace harness see PARTS LINK 1 below If fuse doesn t blow then go to step 3 BDO BD1 HARNESS 11 0...

Page 8: ...a multi meter set on DC voltage measure between the black wire at pin 6 and the white wire on pin 4 while the switch is pressed The voltage should read the same approximate value as the batteries If...

Page 9: ...meter set on DC voltage measure between the red wire at pin 3 and the white wire on pin 4 while the switch is depressed The voltage should read the same approximate value as the batteries If not repl...

Page 10: ...elay With a test light probe the fuse for voltage If the test light powers up replace the relay and retest If it does not then probe the green wire If there is voltage present replace the harness refe...

Page 11: ...NLY Trouble Shooting Problem Possible Cause Solution House Relay won t engage BD2 BD3 MODELS ONLY Check fuses on house relay If not blown go to step 25 if blown replace with size fuse and retest If fu...

Page 12: ...n DC voltage measure between the black wire at pin 12 and the white wire on pin 4 while the switch is pressed The voltage should read the same approximate value as the batteries If not replace disconn...

Page 13: ...ding is the same go to step 35 With a multi meter set on DC voltage measure between the red wire at pin 2 and the white wire on pin 4 while the switch is depressed The voltage should read the same app...

Page 14: ...wire on pin 12 The voltage should read 0 Volts DC If it reads 0 VDC then replace switch panel refer to PARTS LINK 2 page 8 If the voltage reading is the same as the nominal battery reading then go to...

Page 15: ...the green wire at pin 5 and the black wire on pin 6 The voltage should read whatever DC voltage as the batteries read typically around 12 volts If it reads 0 VDC then inspect the harness for damage or...

Page 16: ...t panel from cabinet console and with a multi meter set on DC voltage measure between the orange wire at pin 7 and the black wire on pin 12 The voltage should read the same approximate value as the ba...

Page 17: ...bank to be unlatched while ignition is on This feature should not be defeated as high voltages from the alternator can damage sensitive electronics Is engine running ignition is on turn engine off swi...

Page 18: ...BD2 BD3 MODELS ONLY Possible Cause Solution STEP 58 STEP 59 With a multi meter set on DC voltage measure between the orange wire at pin 7 and the violet wire on pin 6 while the switch is depressed The...

Page 19: ...the plug from the battery disconnect panel with a multi meter set on DC voltage measure between the yellow wire at pin 11 and the black wire on pin 12 If the voltage continues to read 12 Volts DC go t...

Page 20: ...place harness refer to PARTS LINK 1 page 7 If the voltage reading is the same as the nominal battery reading then replace battery disconnect panel refer to PARTS LINK 2 page 8 STEP 68 Trouble Shooting...

Page 21: ...the same as the nominal battery reading then replace battery disconnect panel refer to PARTS LINK 2 page 8 STEP 70 Trouble Shooting Problem No voltmeter reading on battery disconnect panel display pa...

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