Maintaining on-board electrical system voltage when performing test and diagnosis work on vehicle

AR54.10-P-1127CW

Maintaining on-board electrical system voltage when performing test and diagnosis work on vehicle

20.01.2020

Model

172, 204, 207, 212, 218

Shown with model 204.0

1

Cover

3

Battery charger positive terminal

F32

Front prefuse

2

Ground terminal point

4

Battery charger ground terminal

Illustrated on model 204.9

1

Cover

3

Battery charger positive terminal

F32

Front prefuse box

2

Ground terminal point

4

Battery charger ground terminal

Shown on model 172

1

Cover

3

Battery charger positive terminal

F32

Front prefuse

2

Ground terminal point

4

Battery charger ground terminal

 Danger

Risk of fire/risk of explosion due to short circuit and escaping oxyhydrogen gas. Risk of (burn) injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte/mist, short circuit and arcing. Risk of poisoning caused by swallowing battery electrolyte or absorption of lead through the skin or body orifices. Risk of death due to voltage U >= 30 V AC and U >= 60 V DC.

No fires, sparks, open flames, or smoking. Wear acid-resistant gloves, clothing, and glasses. Pour battery acid only into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

1

Open the charging terminal point on the front prefuse box (F32) by moving the cover (1)


When working on a restraint system, when welding and when working on lines without contact protection, the procedure for maintaining the on-board electrical system voltage must not be performed,
as the electrical system or electronic component parts may be damaged.

 For longer test and diagnosis work, a battery charger with medium charging capacity must be connected to maintain the on-board electrical system voltage due to the high current requirement.

2

Clip positive terminal of battery charger (3) onto charging terminal point on front prefuse box (F32)

3

Clip ground terminal for battery charger (4) onto ground support point (2) and switch on battery charger


Do not reverse the connections. Risk of short circuit. Use a battery charger with at least 30 A charging current and 13.5 V charging voltage,
otherwise, the on-board electrical system battery (G1) may be partially discharged.

 Commercially available devices/tools
Battery charger - medium charging capacity

4

Switch off battery charger after completing testing and diagnosis work on the vehicle

5

Disconnect battery charger positive terminal (3) and battery charger ground terminal (4)

6

Close covering (1) on front prefuse box (F32)