Manually deenergize high-voltage on-board electrical system

AR47.70-P-1010EQ

Manually deenergize high-voltage on-board electrical system

16.12.2019

Engine

780 in model 293

Modification notes

16.12.2019

Connect high-voltage plug, added.

Operation steps 21, 25.

Actuate high-voltage disconnect device

2

Jumper plug

4

Fuse

S7

High-voltage shutoff device

3

Padlock

5

High-voltage plug

F34/6

High-voltage power distributor

6

Test adapter

7

Nuts

9

Test adapter

8

High-voltage plug

 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 caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.

No parts of the body or limbs should be within the operating area when the components are moving.

AS00.00-Z-0011-01A

Topical note

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

AH00.00-Z-0300-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Notes on HANDS-FREE ACCESS

AH80.61-P-0001-01A

Notes on safety-relevant components

AH00.00-Z-0019-01A



Check

1

Print out test log (form).



Manually deenergize high-voltage on-board electrical system, form

OF47.70-P-3005-01EQ

 Fill out test log (form) step-by-step during the following test.

2

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

 No-one must be located in or on the vehicle throughout the entire power disable procedure.

3

Disconnect charger for retaining the 12 V on-board electrical system voltage.

If a 12 volt charger is connected.

AR54.10-P-1127LW

4

Unplug charging cable from vehicle socket for charging the high-voltage battery.

If the charging cable is connected.

5

Close socket flap for vehicle socket and use the warning sign to secure it against plugs being inserted again.

 Warning label

*451589086300

6

Open hood.

7

Remove engine cover.



AP01.10-P-2405-01J

8

Unplug jumper (2), as shown in picture sequence (A, B, C), from high-voltage disconnect device (S7) and secure using padlock (3) against restart procedure.

 Store padlock key (3) separately and so that it is only accessible to authorized persons.

9

Visually check high voltage components for activity.

 No high voltage components may be active. The electric refrigerant compressor and heaters may not be active.

If high voltage components are active,



cancel manual test of absence of voltage and inform the responsible market support.

10

Check high voltage components, electrical connectors, and electric lines for damage.

If damage is present,



cancel manual test of absence of voltage and inform the responsible market support.

11

Check measuring instrument for proper operation and damage according to the manufacturer's specifications.



000 588 07 19 00 Measuring instrument

WS47.00-N-0046A

 The proper function must be ensured before the start of inspection work through a function check in accordance with the manufacturer's specifications and a visual check for external damage.

If there is a problem,



replace measuring instrument.

12

Visually inspect the test adapter (6, 9) for any damage.

 The proper function must be ensured before the start of the inspection work through a visual check for external damage.

 Test adapter

*242589006300

 Test adapter

*000589946300

If there is a problem,



replace test adapter (6, 9).

13

Unclip electric line of high-voltage plug (5) on high-voltage power distributor (F34/6) from holder.

14

Switch on ignition.

15

Remove rear underfloor paneling.

AR61.30-P-1001EQ

16

Remove nuts (7) from holder of electric line of high-voltage plug (8) on high-voltage battery then release holder.

17

Wear personal protective equipment (arc-resistant jacket, face mask, electrical protective gloves, etc.).

 Personal protective equipment must always be worn when performing the following operation steps.
Observe safety regulations of corresponding country. These vary depending on the country concerned.

18

Disconnect high-voltage plug (8) from high-voltage battery.

AR47.70-P-0005-01EQ


Ensure utmost care and cleanliness.
Otherwise, damage to the high voltage components may occur.

19

Connect test adapter (9) to high-voltage battery.


Ensure utmost care and cleanliness.
Otherwise, damage to the high voltage components may occur.

 Test adapter

*242589006300

20

Manually check high-voltage on-board electrical system at high-voltage battery for absence of voltage.

AR47.70-P-1010-02EQ



000 588 07 19 00 Measuring instrument

WS47.00-N-0046A

 If a voltage of  60 V DC is measured for all voltage measurements, the vehicle is considered to be free of high voltage.
Absence of voltage is then given.

 Test adapter

*242589006300

If absence of voltage was not determined,



cancel manual test of absence of voltage and inform the responsible market support.

21

Remove test adapter (9) and connect high-voltage plug (8).

AR47.70-P-0005-01EQ


Ensure utmost care and cleanliness.
Otherwise, damage to the high voltage components may occur.

22

Disconnect high-voltage plug (5) from high-voltage power distributor (F34/6).

AR47.70-P-0005-01EQ


Ensure utmost care and cleanliness.
Otherwise, damage to the high voltage components may occur.

23

Connect test adapter (6) to high-voltage power distributor (F34/6).


Ensure utmost care and cleanliness.
Otherwise, damage to the high voltage components may occur.

 Test adapter

*000589946300

24

Manually check high-voltage on-board electrical system on high-voltage power distributor (F34/6) for absence of voltage.

AR47.70-P-1010-03EQ



000 588 07 19 00 Measuring instrument

WS47.00-N-0046A

 If a voltage of  60 V DC is measured for all voltage measurements, the vehicle is considered to be free of high voltage.
Absence of voltage is then given.

 Test adapter

*000589946300

If absence of voltage was not determined,



cancel manual test of absence of voltage and inform the responsible market support.

25

Remove test adapter (6) and connect high-voltage plug (5).

AR47.70-P-0005-01EQ


Ensure utmost care and cleanliness.
Otherwise, damage to the high voltage components may occur.

26

Remove personal protective equipment.

27

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

28

Complete entries in the test log (form) and place in the vehicle behind the windshield.