Volkswagen Grand California 2020 Service Training page 16

System components
Battery master and isolator switch E74
The battery master and isolator switch E74 (for short: battery isolator switch) is located in the technical cabinet
above the fuse and relay carrier.
It disconnects the voltage supply from the additional battery to the fuses SJ.
The following consumers are switched off after the battery isolator switch has been set to the OFF position:
- LTE Wi-Fi router
- USB charging socket
- 12 V sockets
- Inductive mobile phone charger
- Locking service flap
- Refrigerator
- Heater (Truma)
- Display and operating unit for camping equipment
- Lighting (reading light, working light, background lighting, shower room lighting and storage compartment
lighting)
- Water supply
- Igniter for gas burners
Battery master and
isolator switch E74
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