Get Technical data Guide for Volkswagen Transporter Van Sixth generation (2015-2021)

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

00 – Technical data

1

Safety information

(VRL014130; Edition 04.2020)

WARNING

If the vehicle has been the subject of an ABT e-Line conversion,

the repair instructions below may have lost their validity.

•

In this case, the workshop manual in ELSA Pro under the

tab “Superstructures and modifications” provided by ABT e-

Line must be observed and applied.

⇒ “1.1 Safety precautions during work on fuel system”,

page 1

⇒ “1.2 Safety precautions when working on vehicles with start/

stop system”, page 1

⇒ “1.3 Safety precautions when using testing and measuring in‐

struments during a road test”, page 2

⇒ “1.4 Safety precautions when working on the cooling system”,

page 2

⇒ “1.5 Safety precautions for working on vehicles with auxiliary

heater”, page 2

1.1

Safety precautions during work on fuel system

Risk of fire due to escaping fuel

When the battery is connected and the driver door opens, the door

contact switch activates the fuel pump. Escaping fuel can ignite

and cause a fire.

– Disconnect voltage supply to fuel pump before opening the

fuel system.

Risk of injury from highly pressurised fuel

The fuel system is pressurised. Risk of injury from fuel spray.

Before opening the fuel system:

– Wear safety goggles.

– Wear protective gloves.

– To release pressure, wrap a clean cloth around the connec‐

tion, and carefully loosen the connection.

1.2

Safety precautions when working on vehicles with start/stop system

Risk of injury from engine starting unexpectedly

If the vehicle’s start/stop system is activated, the engine can start

unexpectedly. A message in the dash panel insert indicates

whether the start/stop system is activated.

– To deactivate start/stop system: switch off ignition.

1. Safety information

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Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

1.3

Safety precautions when using testing and measuring instruments during a

road test

Risk of injury caused by unsecured testing and measuring instru‐

ments

When the front passenger airbag is deployed in an accident, in‐

sufficiently secured testing and measuring instruments become

dangerous projectiles.

– Secure testing and measuring instruments on the rear seat.

Or

– Have a second person operate the testing and measuring in‐

struments on the rear seat.

1.4

Safety precautions when working on the cooling system

Risk of scalding from hot coolant

On a warm engine, the cooling system is under high pressure.

Risk of scalding from steam or hot coolant.

– Wear protective gloves.

– Wear safety goggles.

– To relieve pressure, cover the cap of the coolant expansion

tank with a cloth, and open it carefully.

1.5

Safety precautions for working on vehicles with auxiliary heater

Danger of fire and explosion from auxiliary heater

In fire and explosion-endangered areas, a spark or the high tem‐

perature of the auxiliary heater can cause a fire or an explosion.

Risk of burns.

– Switch the auxiliary heater off in fire and explosion-endan‐

gered areas.

Danger of poisoning from exhaust fumes

Auxiliary heaters produce poisonous exhaust fumes. Risk of poi‐

soning and injuries to respiratory system.

– In closed areas, switch on the auxiliary heater only when it is

connected to an exhaust extractor system.

– In closed areas without an exhaust extractor system, switch

the auxiliary heater off.

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Rep. gr.00 - Technical data

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

Risk of damage when starting the engine

If components of the fuel system or coolant circuit of the auxiliary

heater are removed or opened, there is a possibility of causing

damage to the auxiliary heater.

– Never attempt to start the engine when components are re‐

moved or opened.

Malfunction caused by air in the fuel supply system

After work has been performed on the fuel tank or the fuel delivery

unit, the metering pump will draw air and supply it to the auxiliary

heater. The air in the fuel system may cause the auxiliary heater

to malfunction.

– Fill fuel take-off pipe with fuel.

Risk of accidents and risk of injury due to activated timer of aux‐

iliary heater

If the vehicle’s timer for the auxiliary heater is active, the heater

may switch on unexpectedly. This poses a risk of poisoning from

exhaust gases, a risk of burns caused by hot auxiliary heater

components as well as a risk of fire and explosions caused by

high temperatures.

– Deactivate timer for auxiliary heater.

1. Safety information

3

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

2

General information

WARNING

If the vehicle has been converted by ABT e-Line, it is possible

that the repair instructions provided below are no longer valid.

•

In this case, the workshop manual in ELSA Pro under the

tab “Superstructures and modifications” provided by ABT e-

Line must be observed and applied.

⇒ “2.1 Type plates”, page 4

⇒ “2.2 Starting conditions for auxiliary/supplementary heater”,

page 4

⇒ “2.3 Rules for cleanliness when working on auxiliary/supple‐

mentary heater and fuel system”, page 5

⇒ “2.4 Notes for vehicles with a start/stop system”, page 5

2.1

Type plates

There are different types of type plates.

When the auxiliary heater is renewed, check the type plate and

the duplicate plate and replace as necessary.

Type plate on auxiliary/supplementary heaters

♦ The date of first use is entered on the lower part of manufac‐

turer's plate.

♦ The year the unit was first put into use must be entered on the

Genuine part manufacturer's plate.

Duplicate type plate for auxiliary/supplementary heaters

♦ In the engine compartment of the vehicle, there is a second

(duplicate) type plate attached to the right of the lock carrier

(when looking in direction of travel). If there is any doubt con‐

cerning the type of the auxiliary/supplementary heater, always

observe the type plate attached directly to the auxiliary/sup‐

plementary heater.

2.2

Starting conditions for auxiliary/supple‐

mentary heater

♦ Engine type OK (diesel/petrol)

♦ Terminal 15 (ignition) on

♦ Engine speed >600 rpm

♦ Coolant temperature <69°C

♦ Ambient temperature <5 C

♦ Reserve fuel level not reached

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Rep. gr.00 - Technical data

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

♦ Line filling carried out

♦ On-board network manager not active

♦ No crash shut-off

♦ No event memory entries blocking start procedure

♦ Has been put into service

2.3

Rules for cleanliness when working on

auxiliary/supplementary heater and fuel

system

♦ Thoroughly clean all connections and adjacent areas before

disconnecting.

♦ Place removed parts on a clean surface, and cover them over.

Use only lint-free cloths.

♦ Carefully cover opened components or seal them if repairs

cannot be carried out immediately.

♦ Install only clean parts; do not remove new parts from pack‐

aging until immediately before installing. Do not use parts that

have been kept unpackaged (for example in toolboxes).

If the fuel system is open:

– Do not work with compressed air.

– Do not move the vehicle.

– Do not start the engine.

– Do not switch on auxiliary/supplementary heater.

2.4

Notes for vehicles with a start/stop sys‐

tem

Additional information:

♦ Refer to ⇒ Self-study programme No. 426 ; Start/Stop System

2009 for description of features.

2. General information

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Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

3

Repair notes

WARNING

If the vehicle has been converted by ABT e-Line, it is possible

that the repair instructions provided below are no longer valid.

•

In this case, the workshop manual in ELSA Pro under the

tab “Superstructures and modifications” provided by ABT e-

Line must be observed and applied.

⇒ “3.1 Rules for cleanliness”, page 6

⇒ “3.2 General information”, page 6

⇒ “3.3 General repair instructions”, page 6

⇒ “3.4 Contact corrosion”, page 7

⇒ “3.5 Nuts and bolts”, page 7

⇒ “3.6 Routing and attachment of lines”, page 7

3.1

Rules for cleanliness

Even small amounts of contamination/soiling can lead to defects.

Therefore, observe the following rules for cleanliness when work‐

ing on the air conditioning system:

♦ Seal open lines and connections immediately with clean plugs,

e.g. from engine bung set - VAS 6122- .

♦ Place removed parts on a clean surface, and cover them over.

Use only lint-free cloths.

♦ Carefully cover opened components or seal them if repairs

cannot be carried out immediately.

♦ Install only clean parts; do not remove new parts from pack‐

aging until immediately before installing. Do not use parts that

have been stored outside their packaging (e.g. in tool boxes).

♦ If system is open, do not work with compressed air.

♦ Protect disconnected electrical connectors from dirt and water,

and reconnect them only when dry.

3.2

General information

♦ The engine control unit has a self-diagnosis capability. Before

carrying out repairs and for fault finding, first read event mem‐

ory.

♦ For trouble-free operation of electrical components, a voltage

of at least 11.5 volts is necessary.

♦ Do not use sealants containing silicone. Particles of silicone

drawn into the engine will not be burnt in the engine and dam‐

age the lambda probe.

♦ Vehicles are equipped with a crash fuel shut-off circuit. It re‐

duces the danger of a fire in a crash as the fuel pump is

switched off via the fuel pump relay.

♦ The system also improves the starting characteristics of the

engine. When the driver door is opened, the fuel pump is ac‐

tivated for 2 seconds to build up pressure in the fuel system.

3.3

General repair instructions

Never attempt to repair any components of the auxiliary/supple‐

mentary heater. Defective components must be replaced with

Genuine parts.

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Rep. gr.00 - Technical data

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

– Read self-diagnosis of auxiliary/supplementary heater using

⇒ Vehicle diagnostic tester.

– When parts of the fuel system are removed or renewed, en‐

sure that all components for fuel delivery to the auxiliary/

supplementary heater are properly installed.

– Mark coolant hoses before removing to avoid any confusion

when reconnecting.

Following repair work in the vicinity of the auxiliary/supplementary

heater fuel line, check the following points:

♦ that the fuel lines are routed flush with the vehicle underbody

and are protected against mechanical damage.

♦ that the auxiliary/supplementary heater fuel line is protected

from heating which might disturb operation.

♦ The fuel line does not come in contact with parts that become

hot.

3.4

Contact corrosion

Contact corrosion can occur if unsuitable fasteners (bolts, nuts,

washers, etc.) are used.

For this reason, only fasteners with a special surface coating are

used.

In addition, rubber, plastic and adhesives are made of non-con‐

ductive materials.

If there is any doubt about the suitability of parts, a general rule

is to use new parts ⇒ Electronic parts catalogue (ETKA) .

3.5

Nuts and bolts

♦ Specified torques given are for unoiled nuts, bolts and screws.

♦ Always renew self-locking nuts and bolts.

♦ Always renew nuts and bolts with turning further angle.

3.6

Routing and attachment of lines

Risk of damage to lines

Lines may become damaged by moving or hot components.

– Route lines in their original positions.

– Ensure there is sufficient clearance to moving or hot compo‐

nents.

3. Repair notes

7

Transporter 2020 ➤

Auxiliary heater - Edition 04.2020

4

Hazard classification of high-voltage

system

DANGER

The vehicle’s high-voltage system and the high-voltage battery

are dangerous and can cause burns or other injuries and even

lead to a fatal electric shock.

– Any work on the high-voltage system, or on systems which

could be indirectly affected by it, must only be carried out by

properly trained and qualified expert personnel.

– In the event of queries or uncertainties regarding the terms

"high-voltage technician" or "high-voltage expert", or those

concerning the high-voltage system, the responsible import‐

er must be contacted before any work is undertaken.

– Any repair work must be performed in accordance with ap‐

plicable laws and regulations, the state-of-the-art technolo‐

gy, any relevant accident prevention regulations (in Germa‐

ny, including but not limited to the Information of the German

Social Accident Insurance (DGUV) 200-005 – Qualification

training for work on vehicles with high-voltage systems), as

well as this workshop manual.

Procedure for vehicles electrified by ABT e-Line

Please observe the Workshop Manuals available in ElsaPro, tab

“Superstructures and modifications”.

If you have no access to ElsaPro, you can also obtain the relevant

manuals from ABT e-Line.

8

Rep. gr.00 - Technical data

Technical data for Your Volkswagen Transporter Van Sixth generation (2015-2021)

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