Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 83
WARNING
Read and follow the information below when de-energizing the
high voltage system to reduce the risk of fatal injury.
♦ Only a qualified technician (high voltage technician)
should disable the high voltage system.
♦ The high voltage technician (HVT) makes sure the system
is de-energized and cannot be re-energized again.
♦ The high voltage technician assures that the system can‐
not be re-energized again by safely storing the key, the
High Voltage System Maintenance Connector - TW- and
the pilot line connector.
♦ The high voltage technician (HVT) puts a sign on the ve‐
hicle saying the voltage is disabled.
♦ Only hybrid electrically instructed persons may perform all
work (maintenance, tire changing, Convenience System)
on vehicles with a high voltage system. If there is any un‐
certainty, discuss with the responsible high voltage tech‐
nician.
♦ A high voltage technician must disable the system before
any work can be performed on the high voltage electrical
system or any other service work to the body.
♦ Only a high voltage expert (HVE) may perform repairs to
the vehicle if it is not possible to disable the high voltage
electrical system.
♦ Individuals with electrical medical equipment must not
work on vehicles with a high voltage electrical system. Ex‐
amples of electrical medical equipment include pain med‐
ication pumps, implanted heart defibrillators, pacemakers,
insulin pumps and hearing aids.
WARNING
Working with high voltage cables:
♦ Do not support yourself or lay tools on the high voltage
cables or on any of its components.
♦ When working near high voltage components and high
voltage cables, do not use tools that generate heat, that
have sharp edges or that are used for cutting or shaping,
such as welding, soldering, hot air or thermal adhesive
equipment.
♦ When working near high voltage components and high
voltage cables, do not use tools that generate heat such
as welding, soldering, hot air or thermal adhesive equip‐
ment.
♦ Do not excessively bend or flex high voltage cables.
♦ Always contact a high voltage technician (HVT) if there are
questions or if something is not clearly understood.
Check the contact surfaces on the potential equalization cables
before installation.
The contact surfaces must be clean. There must be no rust or
grease on them.
Follow all guidelines for clean working conditions.
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Observe the following precautions when working on the high volt‐
age system:
♦ Only technicians who are trained in electrical systems should
work on high voltage system (hybrid) vehicles.
♦ When working on a hybrid vehicle, always inspect the hybrid
components in the area where the work is being performed.
♦ Do not excessively bend or flex high voltage cables.
♦ Always contact a high voltage technician or a high voltage ex‐
pert specializing in electrical systems if something is not un‐
derstood or if there are questions.
♦ All the work described below is referencing removing, instal‐
ling and replacing the individual components.
Working on the High Voltage System
During the Following Work Minimum Qualifications, refer to
De-energizing the high volt‐
age system
High voltage technician
Re-energizing the high volt‐
age system
High voltage technician
When Working on the Following Compo‐
nents
The High Voltage System Must Be
De-energized By A High Voltage
Technician Prior To Beginning the
Work?
Minimum Qualifications,
refer to
Yes
No
Electro-Drive Drive Motor - V141-
X
Technician trained in
electrical systems
Electric Drive Power and Control Electron‐
ics - JX1-
X
Technician trained in
electrical systems
High Voltage System Maintenance Con‐
nector - TW-
X
Technician trained in
electrical systems
Electric A/C Compressor High Voltage Ca‐
ble - P3-
X
Technician trained in
electrical systems
Drive Motor High Voltage Wiring Harness -
PX2-
X
Technician trained in
electrical systems
High Voltage Wiring Harness For High Volt‐
age Battery - PX1-
X
Technician trained in
electrical systems
Hybrid Battery Unit - AX1- , Removing and
Installing
X
Technician trained in
electrical systems
Charging the Hybrid-Battery - A38- with
High Voltage Battery Charger - VAS6565-
X
High voltage technician
Battery Regulation Control Module - J840-
X
High voltage technician
Battery Fan 1 - V457-
X
Technician trained in
electrical systems
Air guides next to the Hybrid Battery Unit -
AX1-
X
Technician trained in
electrical systems
Air guides under the Hybrid Battery Unit -
AX1-
X
Technician trained in
electrical systems
Electrical A/C Compressor - V470-
X
Technician trained in
electrical systems
Drive Motor Temperature Sensor - G712-
X
Technician trained in
electrical systems
Drive Motor Rotor Position Sensor 1 -
G713-
X
Technician trained in
electrical systems
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When Working on the Following Compo‐
nents
The High Voltage System Must Be
De-energized By A High Voltage
Technician Prior To Beginning the
Work?
Minimum Qualifications,
Yes
No
Three-Phrase Current Drive - VX54-
X
Technician trained in
electrical systems
Electrical Drive Button - E656-
X
Technician trained in
electrical systems
Fuse Electrical A/C Compressor - V470- in
Electric Drive Power and Control Electron‐
ics - JX1-
X
Technician trained in
electrical systems
Potential equalization cable (Ground [GND]
wires)
X
Technician trained in
electrical systems
Working on the coolant circuit for the high
voltage components
X
Technician trained in
electrical systems
Measuring insulation resistance
X
High voltage technician
Working when the system is de-energized
and the ignition is on
X
Technician trained in
electrical systems
Conventional Work Near High Voltage Components
When Working on the Following Compo‐
nents
The High Voltage System Must Be
De-energized By A High Voltage
Technician Prior To Beginning the
Work?
Minimum Qualifications,
Yes
No
Spark plugs
X
Technician trained in
electrical systems
Catalytic converter
X
Technician trained in
electrical systems
Exhaust System
X
Technician trained in
electrical systems
Coolant reservoir
X
Technician trained in
electrical systems
Front brakes
X
Technician trained in
electrical systems
Decoupler
X
Technician trained in
electrical systems
Internal Combustion Engine, Removing
and Installing
X
Technician trained in
electrical systems
Transmission without Electro-Drive Drive
Motor - V141- , Removing and Installing
X
Technician trained in
electrical systems
Fuel Tank
X
Technician trained in
electrical systems
Front subframe
X
Technician trained in
electrical systems
Rear axle
X
Technician trained in
electrical systems
Underbody Trim
X
Technician trained in
electrical systems
Welding (Cover high voltage components
with non-combustible materials and then
perform a visual inspection)
X
Technician trained in
electrical systems
Vehicle Body Work (Using an Alignment
Bench)
X
Technician trained in
electrical systems
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When Working on the Following Compo‐
nents
The High Voltage System Must Be
De-energized By A High Voltage
Technician Prior To Beginning the
Work?
Minimum Qualifications,
refer to
Yes
No
When working near high voltage compo‐
nents and high voltage cables, do not use
tools that generate heat, that have sharp
edges or that are used for cutting or shap‐
ing, such as welding, soldering, hot air or
thermal adhesive equipment (Cover high
voltage components with non-combustible
materials and then perform a visual inspec‐
tion).
X
Technician trained in
electrical systems
Left Front Headlamp - MX1- , Removing
and Installing
X
Technician trained in
electrical systems
Right Front Headlamp - MX2- , Removing
and Installing
X
Technician trained in
electrical systems
Headlamp Bulbs, Removing and Installing
X
Technician trained in
electrical systems
General Work
When Working On the Following Compo‐
nents
The High Voltage System Must Be
De-energized By A High Voltage
Technician Prior To Beginning the
Work?
Minimum Qualifications,
refer to
Yes
No
12V Battery, removing and installing
X
Technician trained in
electrical systems
General controls modules and electric com‐
ponents, 12V, removing and installing
X
Technician trained in
electrical systems
Fluids, coolant and fluids, draining and fill‐
ing
X
Technician trained in
electrical systems
Refrigerant extracting, evacuating, filling
X
Technician trained in
electrical systems
Refrigerant pipes directly to the A/C com‐
pressor
X
Technician trained in
electrical systems
A/C System, flushing
X
Technician trained in
electrical systems
Peripheral refrigerant line (work that does
not involve the A/C compressor directly
without opening the refrigerant circuit, for
example, loosening and tightening the re‐
frigerant line)
X
Technician trained in
electrical systems
Work with the engine raised, engine mount
X
Technician trained in
electrical systems
Emissions test
X
Technician trained in
electrical systems
Follow the instructions in the paint hand‐
book when performing any paint/drying
work
X
Technician trained in
electrical systems
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
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Rep. Gr. ST - Generic Scan Tool
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