Remove/install high-voltage distributor

AR54.10-P-1400MEV

Remove/install high-voltage distributor

02.12.2019

Model

451.391/491 with engine 780.009

1

Drive electric motor high-voltage line

5

Unlocking tool

N116/1x1

Refrigerant compressor control unit connector (EAC)

2

High-voltage battery high-voltage line

6

High-voltage battery high-voltage connector

N116/1x2

Refrigerant compressor high-voltage connector (EAC)

3

Bracket

7

Drive electric motor high-voltage connector

N116/5

PDU high-voltage distributor control unit

4

Bracket

G5

High-voltage battery

8

Screw

9

Screw

N116/5

PDU high-voltage distributor control unit

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

Topical note

General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system

AH00.00-Z-0300-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

 

Remove/install

1

Remove transmitter key and mains plug

2

Carry out disconnection of high-voltage system

AR54.10-P-1160MEV

3

Lower rear drive module

AR01.00-P-3050MEV

4

Remove brake booster vacuum pump control unit

AR43.05-P-1323MEV

5

Remove high-voltage charger control unit

AR54.10-P-5106MEV

6

Create access to high-voltage battery high-voltage line (2) along length of bracket (3)

 Installation: Replace cable tie.

7

Remove screws/bolts (arrows D) from bracket (4)

 Create access to the bracket (4) to allow the refrigerant compressor high-voltage connector (EAC) (N116/1x2) to be released.

8

Pull gray retainer (arrow A) at refrigerant compressor control unit connector (EAC) (N116/1x1) and disconnect refrigerant compressor control unit connector (EAC) (N116/1x1)

9

Push white retainer (arrow B) of refrigerant compressor high-voltage connector (EAC) (N116/1x2) and release and disconnect refrigerant compressor high-voltage connector (EAC) (N116/1x2) from below

10

Pull protective cover over refrigerant compressor high-voltage connector (EAC) (N116/1x2)


Protect the refrigerant compressor HV connector (EAC) (N116/1x2) against dirt and moisture.
Otherwise the high-voltage system may be damaged.

 Set of protective caps

*001589009100

11

Undo cable tie securing high-voltage battery high-voltage line (2) in wheel arch (arrow C)

 Installation: Replace cable tie.

12

Disconnect high-voltage battery high-voltage connector (6) of high-voltage battery high-voltage line (2) from high-voltage battery (G5) using release tool (5)

13

Pull protective cover over high-voltage battery high-voltage connector (6)


Protect high-voltage battery high-voltage connector (6) against dirt and moisture.
Otherwise the high-voltage system may be damaged.

 Set of protective caps

*001589029100

14

Disconnect drive electric motor high-voltage connector (7) of drive electric motor high-voltage line (1) from drive electric motor using release tool (5)

15

Pull protective cover over drive electric motor high-voltage connector (7)


Protect electric motor drive high-voltage connector (7) against dirt and moisture.
Otherwise the high-voltage system may be damaged.

 Set of protective caps

*001589029100

16

Remove screw/bolt (9) from PDU high-voltage distributor control unit (N116/5) and place ground line to one side

17

Unscrew screws/bolts (8) and remove PDU high-voltage distributor control unit (N116/5)

18

Install in the reverse order