Volkswagen ID.3: Electric drive. Voltage converter

• Assembly overview – voltage converter
• Assembly overview – voltage converter
• Removing and installing voltage converter
• Removing and installing voltage converter

Assembly overview – voltage converter

Assembly overview – voltage converter

1 - Voltage converter -A19-

❏ → Rep. gr.93; Removing and installing voltage converter [A19]

2 - Bolt

❏ Tightening sequence: “diagonal sequence”

❏ Qty. 4

❏ M6×25

❏ 8 Nm

3 - Coolant connections

4 - High-voltage electrical connectors

5 - 12 V voltage supply

❏ Positive terminal

❏ 20 Nm

6 - 12 V voltage supply

❏ Negative terminal

❏ 20 Nm

Assembly overview – voltage converter

Assembly overview – voltage converter

1 - Coolant connection

2 - Electrical connector for electrical system

3 - 12 V voltage supply

❏ Positive terminal

❏ 8 Nm

4 - High-voltage electrical connector

5 - Coolant connection

6 - 12 V voltage supply

❏ Negative terminal

❏ 20 Nm

7 - Nut

❏ Qty. 4

❏ 8 Nm

8 - Voltage converter -A19-

❏ → Rep. gr.93; Removing and installing voltage converter [A19]

Removing and installing voltage converter

Removing and installing voltage converter

Special tools and workshop equipment required

♦ drip tray for workshop hoist -VAS 6208-

♦ hose clamps, up to Ø 25mm -3094-

Voltage converter -A19- is referred to hereafter as voltage converter.

Removing

DANGER

High voltage can cause fatal injury.

Danger of severe or fatal injuries from electric shock or electric arcs.

– Have a high-voltage technician (HVT) or a high-voltage expert (HVE) de-energise the high-voltage system.

– → Rep. gr.93; De-energise high-voltage system.

If the voltage converter is to be renewed, perform the test plan for renewal of the control unit:

– Carry out function “Renew control unit” using → Vehicle diagnostic tester → Rep. gr.00; Access to diagnoses.

Continued

– Remove air intake unit of heater and air conditioning unit → Heating, air conditioning; Rep. gr.87; Front heater and air conditioning unit; Removing and installing air intake box of heater and air conditioning unit.

– Disconnect battery → Electrical system; Rep. gr.27; Battery; Disconnecting and connecting battery.

– Place drip tray for workshop hoist -VAS 6208- under front of vehicle.

– Clamp off coolant hoses using hose clamps, up to Ø 25mm -3094-.

– Detach clamps -2-, and pull off coolant hoses.

– Disconnect high-voltage electrical connector -3- from voltage converter.

– Fold up positive cable cap -5-.

– Unscrew bolts -4-.

– Unscrew bolts -arrows-.

Installing

Install in reverse order of removal, observing the following:

– → Rep. gr.19; Cooling system/coolant; Filling cooling system

If the voltage converter has been renewed, perform the test plan for renewal of the control unit:

– Carry out function “Renew control unit” using → Vehicle diagnostic tester → Rep. gr.00; Access to diagnoses.

Continued

WARNING

High voltage can cause fatal injury.

Danger of severe or fatal injuries from electric shock or electric arcs.

– Have a high-voltage technician (HVT) or a high-voltage expert (HVE) re-energise the high-voltage system.

– → Rep. gr.93; Re-energise high-voltage system.

Tightening torques

♦ → Rep. gr.93; Assembly overview - voltage converter

Removing and installing voltage converter

Removing and installing voltage converter

The voltage converter -A19- will henceforth be referred to as “voltage converter”.

The charging unit 1 for high-voltage battery -AX4- will henceforth be referred to as “charging unit”.

Removing

DANGER

High voltage can cause fatal injury.

Danger of severe or fatal injuries from electric shock or electric arcs.

– Have a high-voltage technician (HVT) or a high-voltage expert (HVE) de-energise the high-voltage system.

– → Rep. gr.93; De-energise high-voltage system.

If the voltage converter is to be renewed, perform the test plan for renewal of the control unit:

– Carry out function “Renew control unit” using → Vehicle diagnostic tester → Rep. gr.00; Access to diagnoses.

Continued

– Disconnect battery → Electrical system; Rep. gr.27; Battery; Disconnecting and connecting battery.

– Remove charging unit → Rep. gr.93; Removing and installing charging unit 1 for high-voltage battery [AX4].

– Unscrew bolts -1-.

– Detach voltage converter with bracket -2- from charging unit.

– Unscrew bolt -3-.

– Unscrew nuts -4-.

– Detach bracket -5- from voltage converter -1-.

Installing

Install in reverse order of removal, observing the following:

If the voltage converter has been renewed, perform the test plan for renewal of the control unit:

– Carry out function “Renew control unit” using → Vehicle diagnostic tester → Rep. gr.00; Access to diagnoses.

Continued

WARNING

High voltage can cause fatal injury.

Danger of severe or fatal injuries from electric shock or electric arcs.

– Have a high-voltage technician (HVT) or a high-voltage expert (HVE) re-energise the high-voltage system.

– → Rep. gr.93; Re-energise high-voltage system.

Tightening torques

♦ → Rep. gr.93; Assembly overview – voltage converter

Electric drive. Accelerator pedalElectric drive. High-voltage cables, all-wheel drive