No 4x4, pwr windows, wipers....etc.
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yeah, me too. the guy i got the replacement gem from says he gets a lot of the yl...(01-03) gems back, but no xl... gems (99-00). he says he has used the newer gem in place of the older , but never the other way around. he says he has sold many more xl gems and never had the returns hes been having with the yls. could be a story or could be the truth. I wonder if the gems go bad for reasons besides water intrusion more commonly in the 01-03 years? that might explain it. He is supposed to be getting me another one by the end of the week, Ill be sure to post the outcome.
thanks for all your help
thanks for all your help
Last edited by jahaiap; Jan 18, 2009 at 09:26 PM.
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I just got it back from a local auto electric shop in town. They claim that the cruise control shut off switch shorted my original GEM module, but not the new (used) on I installed. The harness that caused the problem was one of the fused replacements from the Ford dealer. One new harness and switch and one used GEM module and everything is fine now.
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From: Under the flightpath of old ORD 22R
I just got it back from a local auto electric shop in town. They claim that the cruise control shut off switch shorted my original GEM module, but not the new (used) on I installed. The harness that caused the problem was one of the fused replacements from the Ford dealer. One new harness and switch and one used GEM module and everything is fine now.
If that is the case, do yourself a favor. Get some of the small male spades ( Napa ) and make a jumper with wire. You can also use the spades out of an ATM fuse, and solder them to wire. Just crush the plastic on the fuse, and get the terminal ends out of it.
Unplug the secondary CC switch on the top of the brake, and jumper it out, and zip tie it away from the master cylinder.
You won't ever blow the fuse ( or GEM ) again, but you do need to remember that if you loose brake lights while driving with the CC on, and need to dis-engage it, you will need to press the off button, the brake pedal won't turn it off ( you would be trying a CC brake tq ).
1st time for a trashed GEM with the SCCS recall, need to keep that one in mind.
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Ive been meaning to stop by and ask them for more info on what they did or reset. I was pretty curious too when they told me what they found. But I did need the switch replaced so I didnt mind paying for that and they only charged me 2 hrs labor.
The only connection I cant make is if the previous switch fried the original GEM then how did the used replacement make the 50mi. trip to the shop without getting burnt up. And what did they do to make everything work again if I delivered it with a ''good'' GEM installed. Replacing the switch wouldnt make the GEM decide to start working again.
The only connection I cant make is if the previous switch fried the original GEM then how did the used replacement make the 50mi. trip to the shop without getting burnt up. And what did they do to make everything work again if I delivered it with a ''good'' GEM installed. Replacing the switch wouldnt make the GEM decide to start working again.
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GEM problems
Have you had the recall done on your truck yet ?
Recall 05S28 - for the leaky SCDS and the trucks going up in flames.
Did you check any fuses prior to replacing the GEM ?
It is possible that the GEM was bad, and you got another bad one, they are electronic devices. That said, there are a few common fuses with the problems your are seeing, in addition to the GEM controlling them.
elec. shift 4x4
Via CJB Fuse #15, via BPP, to GEM.
Power to transfer case relay via BJB Fuse #104.
Transfer case electric clutch via CJB fuse #23, via BJB Fuse #111. GEM controls the ground side of the coils for the transfer case relay, and the transfer case electric clutch.
power windows
via accy delay relay via BJB Fuse # 110 or BJB Breaker 601 if SCrew boy style. Gem only controls the OTD relay for the drivers side relay. Other windows are via the Accy delay relay direct ( controlled by GEM ).
interior lights
interior lamp relay via battery saver relay via CJB Fuse #14 for coils. Battery saver & interior lamp relays both controlled by the GEM ( on the ground side ). Interior lamp relay & battery saver relay both fed by BJB Fuse #103 ( for power to pin #30 of NO contacts ).
Warning Chime ( door and seat belt buzzer )
belt minder module CJB #29 & CJB #30 via BJB Fuse #111 and BJB #6. BJB #111 also feeds CJB Fuse #20, #21, #22 & 24. This is the ESOF & DTR PCM module, RCM, HVAC switch, and pass airbag module. GEM controls the signal input from the belt and key in ign, as well as the door ajar inputs.
windshield wipers
CJB Fuse # 11 via BJB Fuse # 113.
Also feeds CJB Fuse #5 for speed control servo, blend door fr HVAC, and function selector switch for HVAC
BPP switch (solenoid that unlocks the column shifter when you press the brake ) PCM controlled.
CJB Fuse #15 via BJB Fuse # 103 for GEM,
BPP switch is CJB Fuse # 13 via BJB Fuse # 103 . This is also the power to the speed control deactivation switch ( recalled switch ) and flasher relay.
PCM power relay
CJB # 2 via BJB #103
PCM power diode via CJB 30 via BJB Fuse #111
NO contacts of PCM Power relay feed BJB Fuses 23 & 18 both are via BJB Fuse #111
Have you added any thing to the truck ? ( fog lamps, amp, etc ).
Recall 05S28 - for the leaky SCDS and the trucks going up in flames.
Did you check any fuses prior to replacing the GEM ?
It is possible that the GEM was bad, and you got another bad one, they are electronic devices. That said, there are a few common fuses with the problems your are seeing, in addition to the GEM controlling them.
elec. shift 4x4
Via CJB Fuse #15, via BPP, to GEM.
Power to transfer case relay via BJB Fuse #104.
Transfer case electric clutch via CJB fuse #23, via BJB Fuse #111. GEM controls the ground side of the coils for the transfer case relay, and the transfer case electric clutch.
power windows
via accy delay relay via BJB Fuse # 110 or BJB Breaker 601 if SCrew boy style. Gem only controls the OTD relay for the drivers side relay. Other windows are via the Accy delay relay direct ( controlled by GEM ).
interior lights
interior lamp relay via battery saver relay via CJB Fuse #14 for coils. Battery saver & interior lamp relays both controlled by the GEM ( on the ground side ). Interior lamp relay & battery saver relay both fed by BJB Fuse #103 ( for power to pin #30 of NO contacts ).
Warning Chime ( door and seat belt buzzer )
belt minder module CJB #29 & CJB #30 via BJB Fuse #111 and BJB #6. BJB #111 also feeds CJB Fuse #20, #21, #22 & 24. This is the ESOF & DTR PCM module, RCM, HVAC switch, and pass airbag module. GEM controls the signal input from the belt and key in ign, as well as the door ajar inputs.
windshield wipers
CJB Fuse # 11 via BJB Fuse # 113.
Also feeds CJB Fuse #5 for speed control servo, blend door fr HVAC, and function selector switch for HVAC
BPP switch (solenoid that unlocks the column shifter when you press the brake ) PCM controlled.
CJB Fuse #15 via BJB Fuse # 103 for GEM,
BPP switch is CJB Fuse # 13 via BJB Fuse # 103 . This is also the power to the speed control deactivation switch ( recalled switch ) and flasher relay.
PCM power relay
CJB # 2 via BJB #103
PCM power diode via CJB 30 via BJB Fuse #111
NO contacts of PCM Power relay feed BJB Fuses 23 & 18 both are via BJB Fuse #111
Have you added any thing to the truck ? ( fog lamps, amp, etc ).
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From: Under the flightpath of old ORD 22R
That was an information question, a lot of times posts will omit things that are important.
I guess it comes down to how did you install it ( and did you check any of the items above ) ?
I guess it comes down to how did you install it ( and did you check any of the items above ) ?