Volkswagen ID.4 & ID.5 Wiring Diagrams PDF | Complete Electric Drive & High-Voltage Schematics

The Volkswagen ID.4 and ID.5 Wiring Diagrams Manual provides the complete set of factory current-flow schematics covering every high-voltage and low-voltage subsystem of the electric drive platform (EBJA / EBRA). Designed for diagnostic engineers and EV specialists, this manual details every signal path, connector pinout, CAN-bus layout, and ground point used in both rear-wheel and all-wheel drive configurations.

Manual Coverage

Electric Drive System (Rear Axle – EBJA)

• Motor control unit (J623) and inverter architecture

• Fuse holder layouts (B, C, interior)

• CAN-bus connections between engine/motor control, power electronics, and steering column units

• High-voltage lines (HV+ / HV–) with connectors T1–T2 series

• Cooling circuit control: V468, V711 actuators, and radiator roller blind

Power and Control Electronics

• Communication with data bus diagnostic interface (J533)

• Integration of the ABS (J104) and thermal management system

• Radiator fan (VX57), coolant pump (V468), and drive controller signal mapping

• Detailed pin reference for connectors (T14, T17, T32, T40)

High-Voltage Battery System (J9D)

• Complete schematics for high-voltage battery AX2

• Fuse holder A/B/C with pilot signal routing

• PTC heater circuits, cooling temperature senders G898–G899

• Airbag (J234) and heater control interface (Z132)

• Voltage converter (A19) and powertrain CAN-bus interconnections

Charging System & Power Conversion

• DC/AC converters (A37, J1050, J842)

• On-board charger (AX4) and HV charging socket (UX4)

• High-voltage network junctions (TV43, TV77–TV92)

• Battery contactors (J1052–J1058) and switching units SX7/SX8

Battery Regulation & Module Communication

• Control logic for J840 battery regulation unit and J1208 module controller

• Serial signal chain through battery modules J991–J994

• Full 22-pin and 32-pin connector references (T22ab–T22ac)

• CAN-bus routing between J840, J1208, and module harnesses

• Diagnostic access points for cell voltage monitoring

CAN-Bus & Signal Reference

• Comprehensive mapping of Powertrain, High-Voltage, and Thermal Management CAN networks

• Connection points (B383–B396, E131–E134, A242–A245)

• Wire color identification table (ws, sw, rt, br, gn, bl, gr, ge, vi, or, rs)

Earth & Fuse Reference Index

• Detailed ground point locations (e.g., 238, 638, 674, 782)

• Fuse assignments and amperage (SC22, SB23, SA1, etc.)

• Applicable references for U.S. and EU market models

Delivery