Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
6
00 Periodic Technical Inspection
(PTI)
Note
♦ The following information is provided on the basis of the
Commission Implementing Regulation (EU) 2019/621 and is
intended solely as information for the regular roadworthiness
testing of motor vehicles.
♦ The information on maintenance is provided as usual in the
corresponding maintenance tables, and the activities to be
performed are described in detail in the “Maintenance Man‐
ual”.
214
6. 00 Periodic Technical Inspection (PTI)
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
It Description Method
Necessary information
e
m
I. Vehicle-
1 specific de‐
scription of
the location
of and ac‐
cess to the
vehicle in‐
terface
Location of vehicle inter‐
face ⇒ page 216
I. Information
2 on whether
the specific
system
individual systems are in
general compatible with
diagnostics. For further
information on this sub‐
ject for the respective
items, refer to
supports
diagnostic
procedures
(yes/no) If
yes:
Location of vehicle inter‐
face ⇒ page 216
I. Vehicle-
2 specific
. bus system
1 and proto‐
col specifi‐
cations
Implemented bus sys‐
tems:
♦ LIN
♦ CAN
♦ Most
♦ Flex-Ray
Implemented protocols:
♦ UDS (Unified Diag‐
nostic Services)
Standardisation: ISO TP
(LAH.5G0.042.B)
I. Vehicle-
2 specific
. communi‐
2 cation pa‐
rameter
Implemented protocols:
♦ UDS (Unified Diag‐
nostic Services)
specifica‐
tions for
tested sys‐
tem/tested
function
I. Vehicle-
3 specific in‐
formation
about the
originally
installed
The original status of
the vehicle (as delivered)
can be obtained via the
PR number.
Please follow document
path:
system
♦ Identify vehicle by
VIN
♦ Select vehicle data
♦ Identify PR number
1 Brake system
.
1 Mechanical
. condition
1 and func‐
tionality
1 Parking
Visual inspection of General description of
. brake, op‐ all components dur‐ electromechanical park‐
1 erating lev‐ ing operation of
ing brake
. er, ratchet brake system
6
♦ Electromechanical
parking brake ⇒ page
216
6. 00 Periodic Technical Inspection (PTI)
215
♦ ⇒ Brake system; Rep.
gr. 46; Parking brake;
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
General description of electromechanical parking brake
Electromechanical parking brake
In the case of electromechanical parking brakes, the conven‐
tional handbrake lever is replaced by a switch.
The electromechanical parking brake is operated by two electric
motors, which act on the rear disc brakes via a gear mecha‐
nism. The mechanical components are designed to hold the
parked vehicle securely even if the on-board power supply is
lost.
Warning lamps in the dash panel insert and in the button indi‐
cate whether the parking brake is activated. In addition, the
activation of the brake is accompanied by an operating sound.
The electromechanical parking brake is easy to operate via the
button and offers additional convenience and safety functions,
such as the dynamic pull-away assist system and the Auto Hold
function.
Auto Hold function
The Auto Hold function prevents the vehicle from rolling away
unintentionally when stationary or when starting off, without the
need to permanently apply the brake.
The system is operated by the ABS/ESC hydraulic unit. If the
vehicle is braked to a standstill, the last brake pressure is stored
by Auto Hold. The driver can remove the foot from the brake
pedal, and all four wheel brakes will still remain applied.
If the ABS wheel speed sensors detect a rolling motion, the
braking torque is automatically increased until the vehicle
comes to a standstill again.
This can happen, for example, when the driver brakes gently
on a gradient. As soon as the driver accelerates again and lets
go of the clutch (for vehicles with a manual gearbox), the brake
will again be released by Auto Hold. For safety reasons, the
function must then be reactivated using a button to the left of
the gear lever.
Electronic vehicle interface
Note
Ensure that the selected vehicle diagnostic tester is used only
with the respective diagnostic cable.
216
6. 00 Periodic Technical Inspection (PTI)
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤
Maintenance - Edition 11.2020
The connection for the diagnostic tester -1- is located in the
lower left section of the dash panel -2-.
Steering system check
Prerequisite:
The steering wheel must be moved in the same direction as the
desired direction of vehicle travel. The angle at which the steer‐
ing wheel is held must at all times correspond to the steering
angle of the front wheels.
“Checking the steering system in the course of the periodic
technical inspection”
Test method:
Visual inspection to ensure continuous alignment of the angle
at which the steering wheel is held with the resulting steering
angle of the front wheels
Prerequisites for testing:
Put vehicle ready into operation, and wait for system to be
checked.
Test sequence:
Bring steering wheel to straight-ahead position. Then turn it
180° to the left, then 360° to the right and finally 180° to the left
again.
Test result OK:
The resulting steering angle at the front wheels continuously
corresponds to the steering angle at which the steering wheel is
held.
6. 00 Periodic Technical Inspection (PTI)
217
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