Now it's Broke-- Help!!!!!
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Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Now it's Broke-- Help!!!!!
I posted some days ago that the 01 Exp wouldn't crank and the gauges in the cluster were acting up. Never really did anything to it and it started cranking again just fine. Gauges were still cycling on and off but they've been doing that for awhile so I didn't think much of it.
Now she won't crank and half the cluster is DEAD. With the key on I still get battery light, air bag light, seatbelt light, door ajar light, and ABS light. None of the other lights go through test mode and the needles are all dead, no movement at all. The odometer is dead.
The eng will turn over but will not fire.
I did an AE diagnostic and here's what I got. Wish I knew how to use it better.
Hoping you guys can lead me in the right direction.
EDIT: I have pulled and visually examined all fuses under hood and in the cab. Disconnected and reconnected cluster.
Now she won't crank and half the cluster is DEAD. With the key on I still get battery light, air bag light, seatbelt light, door ajar light, and ABS light. None of the other lights go through test mode and the needles are all dead, no movement at all. The odometer is dead.
The eng will turn over but will not fire.
I did an AE diagnostic and here's what I got. Wish I knew how to use it better.
Hoping you guys can lead me in the right direction.
EDIT: I have pulled and visually examined all fuses under hood and in the cab. Disconnected and reconnected cluster.
Logistics Pro
Joined: Jan 2001
Posts: 3,740
Likes: 37
From: Central NYS
Your HEC (Hybrid Electronic Cluster, aka Instrument Cluster) is not responding to the SCP (Standard Corporate Protocol) network.
The SCP network data bus is an unshielded twisted pair cable and connects the various modules/computers so they can share data between them. Your probably going to have to find someone that can trouble shoot this network.
You could check to see that the instrument cluster has been properly connected and that no pins are corroded or have been pushed out.
Has any work been done on this vehicle recently? Especially under the dash?
The SCP network data bus is an unshielded twisted pair cable and connects the various modules/computers so they can share data between them. Your probably going to have to find someone that can trouble shoot this network.
You could check to see that the instrument cluster has been properly connected and that no pins are corroded or have been pushed out.
Has any work been done on this vehicle recently? Especially under the dash?
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Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Jim,
No work done recently. None under the dash since we've owned it, over 9 yrs. Can I assume it will take specialized equipment to test the network? What are the chances that the Cluster has gone bad? I've read about other issues with the solder joints on the boards. Maybe here too?
If I'm reading the print correclty the network wires are pins 1 and 2 of the white plug. Do you know where I can check them for conntinuity. The print I have just says Multiplex Communication Network. Not sure where they go. Don't want to fry anything just sticking a meter on them either. I'm guessing that if everything else on the network is working and the wiring checks good then I can start looking for a new cluster.
Any idea if this issue could stop the eng from firing?
Thanks for helping out with this.
No work done recently. None under the dash since we've owned it, over 9 yrs. Can I assume it will take specialized equipment to test the network? What are the chances that the Cluster has gone bad? I've read about other issues with the solder joints on the boards. Maybe here too?
If I'm reading the print correclty the network wires are pins 1 and 2 of the white plug. Do you know where I can check them for conntinuity. The print I have just says Multiplex Communication Network. Not sure where they go. Don't want to fry anything just sticking a meter on them either. I'm guessing that if everything else on the network is working and the wiring checks good then I can start looking for a new cluster.
Any idea if this issue could stop the eng from firing?
Thanks for helping out with this.
Logistics Pro
Joined: Jan 2001
Posts: 3,740
Likes: 37
From: Central NYS
No work done recently. None under the dash since we've owned it, over 9 yrs. Can I assume it will take specialized equipment to test the network? What are the chances that the Cluster has gone bad? I've read about other issues with the solder joints on the boards. Maybe here too?
I'd lean more toward an issue with the cluster, but changing out the cluster will present a whole nother set of issues. Changing the HEC will require the PCM ID to be stored in the new HEC (the HEC won't respond to an unknown PCM ID) along with all the PATS parameters.
You might try putting the HEC in self test mode (as discussed in your other thread (?) and cycle down through the codes until the odometer displays "dtc" and any DTCs will follow. It might give an indication if the HEC is functioning.
At this point, anything is possible.
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Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Jim,
First let me say again thanks for helping with this.
I did run the self test last week when this first started. At the time I didn't have the list of codes and didn't write them down
. Figured I'd get the list from All Data(have access at work) and run it again later. Now it won't do anything. Odometer is stone dead.
It is in fact an XLT and the 2 plugs to the cluster are C237 and C238. One is black and one is white. The black one seems to carry most of the lamp functions and the white one the majority of the needle fuctions. According to the print I have pins 1 and 2 of the white plug are the J1850 bus pos and neg.
I going to take a close look at the board in the cluster and if I don't find anything obvious then probably punt. I would love to keep playing with till I figure it out but Momma needs her vehicle.
First let me say again thanks for helping with this.
I did run the self test last week when this first started. At the time I didn't have the list of codes and didn't write them down
. Figured I'd get the list from All Data(have access at work) and run it again later. Now it won't do anything. Odometer is stone dead. It is in fact an XLT and the 2 plugs to the cluster are C237 and C238. One is black and one is white. The black one seems to carry most of the lamp functions and the white one the majority of the needle fuctions. According to the print I have pins 1 and 2 of the white plug are the J1850 bus pos and neg.
I going to take a close look at the board in the cluster and if I don't find anything obvious then probably punt. I would love to keep playing with till I figure it out but Momma needs her vehicle.
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