2002 ford 7.3 central junction box internal relays Below is that diagram for the fuse box under the dash which is referred to as the central junction box. You are looking for fuse #40 which I marked. Now these do not have a serviceable fuel .
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Central Junc-tion Box (CJB) (14A068) 151–4 Junction block 10–15 10–1 See page 10–15 Junction block. Power Distribution 13-18 Excursion, Super Duty Series F-250, F-350, F-450, F-550 ’02 .
The updated central junction box (dash fuse panel) now houses the starter relay. It is a standard relay which is serviceable and can be removed to perform further circuit . The problem I am having is the relays are getting extremely hot after driving for 30 minutes or so. This is without fuse 38 being installed,or a trailer connected. I disassembled the . The electrical information online for the 7.3s appears to have occured in two waves - 1997 and 2002. There is some 1999 info, also. .but . From what I now understand the relay for the trailer driving lights is embedded in the plastic of the central junction box and is likely fried, which means I need to replace the entire .
Below is that diagram for the fuse box under the dash which is referred to as the central junction box. You are looking for fuse #40 which I marked. Now these do not have a serviceable fuel .
To wire around the FP relay that's built into the Fuse box, you'll need to identify which wires coming into the fuse box are for the FP circuit, both input power, output to the FP .This truck has a fuel pump module that has a relay which is not serviced separately and you have an inertia switch that can give you trouble as well. Here is a a guide to help you a test on the relay once you find it from the diagrams .
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The IDM relay is in the 'battery junction box" (the TSB is have does not specify the location in the box). The IDM has a 30 amp fuse also in the battery junction box (position 27).Step by step instructions on proper disassembly, component replacement and re-assembly of the 2002 through 2007 FORD Central Junction Box (CJB) aka Body Control Module (BCM) concentrating.Central Junc-tion Box (CJB) (14A068) 151–4 Junction block 10–15 10–1 See page 10–15 Junction block. Power Distribution 13-18 Excursion, Super Duty Series F-250, F-350, F-450, F-550 ’02 . relay box 4 3 C1187 3 C1188 K352 Trailer tow relay, right turn 95–1 K353 Trailer tow relay, left turn 95–1 F2.6 20A 12 12 The updated central junction box (dash fuse panel) now houses the starter relay. It is a standard relay which is serviceable and can be removed to perform further circuit diagnosis. CONSULT YOUR OWNER"S MANUAL for fuse and relay location information.
The problem I am having is the relays are getting extremely hot after driving for 30 minutes or so. This is without fuse 38 being installed,or a trailer connected. I disassembled the CJB(fuse panel) to take a look and the non serviceable relay . The electrical information online for the 7.3s appears to have occured in two waves - 1997 and 2002. There is some 1999 info, also. .but not specifically wiring schematics.
From what I now understand the relay for the trailer driving lights is embedded in the plastic of the central junction box and is likely fried, which means I need to replace the entire CJB. Is this difficult and does anyone have instructions etc. on how to perform this change?Below is that diagram for the fuse box under the dash which is referred to as the central junction box. You are looking for fuse #40 which I marked. Now these do not have a serviceable fuel pump relay, so if the relay is faulty you would need to replace the entire fuse box.
To wire around the FP relay that's built into the Fuse box, you'll need to identify which wires coming into the fuse box are for the FP circuit, both input power, output to the FP and the trigger circuit (which may be internal to the fuse box).This truck has a fuel pump module that has a relay which is not serviced separately and you have an inertia switch that can give you trouble as well. Here is a a guide to help you a test on the relay once you find it from the diagrams below. Fuel Pump Relay - Part of central junction box (not serviceable separately).
Do you have a WTS light when you first roll-on the key? If not, that's a good indication your PCM isn't getting power and, in the winter is often caused by the fuel heater (#30) fuse popping because it's shorted out. You could just unplug the heater if that were the case..Step by step instructions on proper disassembly, component replacement and re-assembly of the 2002 through 2007 FORD Central Junction Box (CJB) aka Body Control Module (BCM) concentrating.Central Junc-tion Box (CJB) (14A068) 151–4 Junction block 10–15 10–1 See page 10–15 Junction block. Power Distribution 13-18 Excursion, Super Duty Series F-250, F-350, F-450, F-550 ’02 . relay box 4 3 C1187 3 C1188 K352 Trailer tow relay, right turn 95–1 K353 Trailer tow relay, left turn 95–1 F2.6 20A 12 12
The updated central junction box (dash fuse panel) now houses the starter relay. It is a standard relay which is serviceable and can be removed to perform further circuit diagnosis. CONSULT YOUR OWNER"S MANUAL for fuse and relay location information. The problem I am having is the relays are getting extremely hot after driving for 30 minutes or so. This is without fuse 38 being installed,or a trailer connected. I disassembled the CJB(fuse panel) to take a look and the non serviceable relay . The electrical information online for the 7.3s appears to have occured in two waves - 1997 and 2002. There is some 1999 info, also. .but not specifically wiring schematics. From what I now understand the relay for the trailer driving lights is embedded in the plastic of the central junction box and is likely fried, which means I need to replace the entire CJB. Is this difficult and does anyone have instructions etc. on how to perform this change?
Below is that diagram for the fuse box under the dash which is referred to as the central junction box. You are looking for fuse #40 which I marked. Now these do not have a serviceable fuel pump relay, so if the relay is faulty you would need to replace the entire fuse box. To wire around the FP relay that's built into the Fuse box, you'll need to identify which wires coming into the fuse box are for the FP circuit, both input power, output to the FP and the trigger circuit (which may be internal to the fuse box).This truck has a fuel pump module that has a relay which is not serviced separately and you have an inertia switch that can give you trouble as well. Here is a a guide to help you a test on the relay once you find it from the diagrams below. Fuel Pump Relay - Part of central junction box (not serviceable separately).
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2002 ford 7.3 central junction box internal relays|Ford f350 relay diagram