Non start- Earth problems
2015 Citroen Berlingo 1.6 diesel stop start automatic

1 points

Problem added: Feb 2, 2021 (1 month ago)
After some advice please, have a Berlingo van. When you try to start there is no ignition lights, but 12v across the battery (new battery). When you link the neg batt terminal to the jump start point on the body, you get ignition lightd and the van attempts to start but only clicks once, you then put a jump pack on the battery poss and jump start point and it fires up. Once running with my multi meter i get 12v across the battery terminals, but if i earth out on the body i get the desired 14.4v. I have accessed the start stop module behind the N/S/F wing. The one earth off the battery goes to this, which then supplies the body earth. Is it common for these to ECUs to fail and if they do, do they tend to require the the condensor as well? Also are these plug and play or do they need programming? If i get the right answer hear, it will be a first, because even my local Citroen garages cant tell.

Car details
Car: Citroen Berlingo
Variant: 1.6 diesel stop start automatic
Model Year: 2015
Category: Electrics, ECU, Warnings & Lights
Replies and Fixes
17,501 points

Feb 2, 2021 (1 month ago)
You want to start with your battery , 12 v is no use .

Battery voltage state of charge table
State of Charge Sealed or Flooded Lead Acid battery voltage Gel battery voltage
100% 12.70+ 12.85+
75% 12.40 12.65
50% 12.20 12.35
25% 12.00 12.00
1 points

Feb 2, 2021 (1 month ago)
The battery is brand new, charged it the night before fitment and drop tested. Im confident its good. Once running after a jump start theres no charge to battery neg terminal, but i can get 14.4v from the body earth. The only earth from the battery goes to the start stop ECU, so this is its only way it can charge the battery. If a jump lead is put on the body earth, and the earth input to the start stop ECU i get 14.4v across the battery terminals?
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