Hello,
I am having the usual BPGA issue here, and am ready to buy another unit. When I went shopping with the numbers I got from mine, there is plenty of new and used units online.
Upon entering my reg an a few different websites their system said the unit is "not compatible". Numbers on the unit match, but that "not compatible" is stopping me.
The unit in my car looks like someone was there at some point, and maybe it fits an incompatible one?
What are the differences in these units?
Can I have some advise please.
C4 Grand Picasso BPGA variants
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vileorange
- Posts: 10
- Joined: 21 Jul 2023, 14:32
- x 1
Re: C4 Grand Picasso BPGA variants
Since I didn’t receive a reply, I’d like to share this for anyone else who may be searching:
The BPGA modules are interchangeable and can be fitted to the Grand Picasso. https://www.cotrolia.com/blog/reparatio ... faut-test/
The main differences between them are the number of fuses and connectors.
If you’re dealing with error codes like B1624, B1624 72, or B1624 73, the issue is likely a failed relay inside the module.
The following BPGA modules — JL01, JL03, JL04, and JL06 — all have the same relay and brown plug configuration. You can reuse the fuses from your original unit if they're still intact.
Be cautious: many used units being sold may have the same relay failure.
How to test the BPGA unit outside the car:
Set your multimeter to continuity mode.
Test between the + lead from the battery input and each output pin.
Roughly half of the outputs should show continuity, and the other half should not. (Opening the unit will help you see this.)
If all outputs show continuity with the + lead, the unit is defective and should be returned.
The BPGA modules are interchangeable and can be fitted to the Grand Picasso. https://www.cotrolia.com/blog/reparatio ... faut-test/
The main differences between them are the number of fuses and connectors.
If you’re dealing with error codes like B1624, B1624 72, or B1624 73, the issue is likely a failed relay inside the module.
The following BPGA modules — JL01, JL03, JL04, and JL06 — all have the same relay and brown plug configuration. You can reuse the fuses from your original unit if they're still intact.
Be cautious: many used units being sold may have the same relay failure.
How to test the BPGA unit outside the car:
Set your multimeter to continuity mode.
Test between the + lead from the battery input and each output pin.
Roughly half of the outputs should show continuity, and the other half should not. (Opening the unit will help you see this.)
If all outputs show continuity with the + lead, the unit is defective and should be returned.
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Brian Wales
- (Donor 2025)
- Posts: 1
- Joined: 02 Apr 2025, 15:32
Re: C4 Grand Picasso BPGA variants
Thank you, I'm trying to get to the bottom of a B1624 73 problem and your post and the information in the link are extremely helpful.