Removing and installing earth cable with battery monitor control unit 2J934 of second battery A1 — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

📋 Procedure

1. ⚠ Risk of fatal injury if high-voltage components are damaged.Observe the following when working in the vicinity of high-voltage components or wiring:It is not permitted to use cutting or forming tools, other sharp-edged tools or heat sources such as welding, brazing, soldering, hot air or thermal bonding equipment.Before starting work, visually inspect the high-voltage components in the areas involved.Before working in engine compartment, visually inspect power and control electronics for electric driveJX1, electric drive motor V141, air conditioner compressor V470 and high-voltage wiring. Before working on the vehicle underbody, visually inspect the high-voltage wiring and covers. Before working on the rear section of the vehicle, visually inspect the high-voltage wiring and the electro-box with the maintenance connector for high-voltage system TW . Visually inspect all potential equalisation lines.Check the following when making the visual inspection:There must be no external damage on any component. The insulation of the high-voltage wiring and potential equalisation lines must not be damaged. There must be no unusual deformation of the high-voltage wiring. All high-voltage components must be identified by a red warning sticker. — Remove rear exhaust air duct for drive battery Heating, air conditioning87Air duct.
2. Remove nuts (2, 4) and bolts (1, 6).
3. Move wiring harness (5) clear and remove battery bracket (3).
4. Remove luggage compartment side trim (right-side) General body repairs, interior70Luggage compartment trim panels; Removing and installing luggage compartment side trim.
5. Release and detach cover (6) for negative terminal.

6. Slacken off nut (1) several turns and disconnect battery clamp of earth cable from battery terminal.
7. Unplug electrical connector (2).
8. Remove wiring junction and move to one side with screw connections attached .
9. Remove bolt (3).
10. Move earth cable (4) clear (arrow) and detach with battery monitor control unit J367(item 5).
11. Install wiring junction .
12. Install luggage compartment side trim (right-side) General body repairs, interior70Luggage compartment trim panels; Removing and installing luggage compartment side trim.
13. Connect battery .

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Check exhaust turbocharger and charge pressure control valve - Engine codes AEB, AJL
• Check air recirculation valve for turbocharger -N249 - Engine codes ANB, APU
• Removing and installing stiffening frame – Audi 1.8 AJP
• Removing and installing intake manifold (with change-over function)
• Bleeding sequence for vehicles with Electronic Stability Program (ESP)