VW80101_EN_2005.06
41 - 01.05
T h e E n g l i s h t r a n s l a t i o n i s b e l i e v e d t o b e a c c u r a t e .I n c a s e o f d i s c r e p a n c i e s t h e G e r m a n v e r s i o n s h a l l g o v e r n .
Q U E L L E : N O L I S
Page 2
VW 801 01: 2005-06
5.2Temperature cycle tests (32)
5.3Multi-stage temperature test (35)
5.4Resistance to open air weathering (35)
5.5Resistance to environmental factors (35)
5.6Thermal shock (37)
6Chemical requirements (40)
6.1Resistance to chemical agents (40)
6.2Engine cleaning (test IP X9K) (41)
7Endurance testing (41)
7.1Endurance testing of electrical and electronic systems/components (41)
7.2Endurance testing of electromechanical systems/components (44)
7.3Component-specific endurance testing (46)
8Table (47)
9Referenced standards (48)
Changes
The following changes have been made as compared to Volkswagen standard VW 801 01,
2004-07:
─Changes as compared to the last issue are marked by a vertical bar on the side of the modified text block.
─Table 1: Test sequence changed
─Table 2: Relevant areas for requirements combined
─Sentence "If the values in the Table are not sufficiently specified, the requirements have to be defined in the Performance Specifications." added.
─Functional status C added
─Section 3.2: Operating voltage dips added
─Section 3.3: Rear feed added
─Section 4.6: Pull-out strength: aim clearly defined
─Effectiveness of the strain relief at the line outlet from the DUT is simulated.
─Section 5.3: Multi-step temperature test added
─Section 5.6: Thermal shock
─The type to be applied is to be defined in the Performance Specifications.
─Section 7: Endurance testing
Sections restructured as follows:
Section 7.1: Endurance testing of electrical and electronic systems/components
Section 7.2: Endurance testing of electromechanical systems/components
Section 7.2.1: Endurance testing with temperature cycle as a variable influencing service life Section 7.2.2: Endurance testing with load cycles as a variable influencing service life added Section 7.3: Component-specific endurance testing
─Table 25: see Table 1, test sequence changed
Previous issues
1987-06; 1988-08; 1992-01; 1993-04; 1994-05; 1995-06; 1998-01; 1999-06; 2000-09; 2001-04; 2003-05; 2004-07
Page 3
VW 801 01: 2005-06
1 Scope
Volkswagen standard VW 801 01 specifies general test conditions for electrical, electromechanical and electronic components/systems in vehicles.
When referring to this standard in component-specific Technical Supply Specifications, drawings and Performance Specifications, Table 25 (Section 8) shall apply and be supplemented with the appropriate specifications in consultation with the responsible Volkswagen Group engineering departments.
2 General requirements
The requirements apply to the entire operating voltage and temperature range.
The functions and test conditions required for the respective test shall be permanently monitored and documented (at least temperature and supply voltage as well as switching performance, voltage drops, load currents, closed-circuit current and bus messages including timing and content, etc., where applicable).
If test severity is not indicated, the standard requirements shall apply.
Requirements called out in drawings and Performance Specifications shall have precedence over component-specific Technical Supply Specifications.
Requirements specified in component-specific Technical Supply Specifications take precedence over VW 801 01.
Requirements called out in drawings, Performance Specifications and component-
specific Technical Supply Specifications refer on principle to conditioned
components/systems.
2.1 Specifications and test sequence
See Table 1.
Table 1 – Tests according to VW 801 01
The test sequence must be followed.
Designation Specifications from VW 801 01 Operating temperature see Section 2.3
Aging temperature see Section 2.3
Operating voltage see Section 3.1
Test designation Specifications for tests acc. to
VW 801 01 Each component and each DUT must meet all requirements in the following test sequence. Conditioning (aging in mechanically circulated air,
without load) see Section 5.1.1
Operation at low temperatures see Section 5.1.2
Operation at high temperatures see Section 5.1.3
Temperature cycle with specified rate of change see Section 5.2.1
Insulation strength see Section 3.16
Insulation resistance see Section 3.17
Endurance shock test for systems/components
in doors and lids see Section 4.2.1
Mechanical shock test for systems/components
on the body see Section 4.2.2
Page 4
VW 801 01: 2005-06
After conditioning (aging in mechanically circulated air without load), the following tests may be performed at the same time.
Operating voltage dips See Section 3.2
Rear feed see Section 3.3
Function during undervoltage and overvoltage see Section 3.4
Voltage level: HIGH/LOW status assignment see Section 3.4
Operating current see Section 3.6
Closed-circuit current consumption see Section 3.7
Reverse polarity protection see Section 3.8
Overcurrent resistance
see Section 3.9
Overvoltage resistance during long-term operation see Section 3.10 Overvoltage resistance during short-term
operation see Section 3.11 Superimposed alternating voltage see Section 3.12
Slow lowering and increasing of the supply
voltage see Section 3.13
Reset behavior at voltage dip see Section 3.14
Short-circuit protection see Section 3.15 Interruptions see Section 3.18
Voltage drops see Section 3.19
Short-distance interference suppression acc. to
TL 965 See Section 3.20.2
Conducted interference acc. to TL 820 66 See Section 3.20.1.
Radiated interference acc. to TL 821 66 See Section 3.20.3.
EMC on sensor lines acc. to TL 823 66 see Section 3.20.1.3
Immunity to electrostatic discharges acc. to
TL 824 66 see Section 3.20.4
Drop test see Section 4.3
Crimp and plug connections see Section 4.4
Push-on connection on electric and electronic
components in vehicles see Section 4.5
Pull-out strength see Section 4.6
Thermal shock test see Section 5.2.2
Multi-stage temperature test see Section 5.3
Resistance to open air weathering see Section 5.4
Sealing against dust and spray water acc. to
DIN 40050-9 see Section 5.5.1
Moist heat, cyclic see Section 5.5.2
Salt spray fog see Section 5.5.3
Thermal shock see Section 5.6
Resistance to chemical agents see Section 6.1
Engine cleaning (test IP X9K) see Section 6.2
2.2 Definitions
2.2.1 Terms
System Functionally combined components, e.g. ABS system, ESP system Component Part of a functionally combined system, e.g. actuator, sensor, control unit DUT The system or component to be tested (device under test)
Functions Contains system-specific and diagnostic functions
Page 5
VW 801 01: 2005-06
2.2.2 Abbreviations
I N Nominal current
T NH The post-heating temperature is the maximum ambient temperature occurring in the relevant area for requirement (see Table 2) after vehicle cut-off.
T oL
The maximum storage temperature is the highest temperature which is
permissible for storage or transportation of the DUT. It comprises temperatures during paint drying and heat built-up in the engine compartment. The DUT is not operated.
T RT Room temperature (+23 ± 5) °C ; if not otherwise sp ecified this is the test temperature
T uB , T oB
The minimum / maximum operating temperature is the lowest / highest ambient temperature at which the DUT may be continuously operated. Self-heating is not taken into account.
T uL The minimum storage temperature is the lowest temperature which is permissible for storage or transportation of the DUT. The DUT is not operated.
U Bmax Maximum operating voltage at which the DUT can be continuously operated.U Bmin Minimum operating voltage at which the DUT can be operated. U N Nominal voltage
U PA Test voltage at running engine U PB Test voltage at battery operation
U PC
Test voltage for reverse-polarity battery connection at external start
2.3 Relevant areas for requirements and types of requirement for vehicles 1 Frontbereich (1a: innen,1b: au?en) 2 Motorraum
3 Motoranbau Getriebeanbau Entkoppelte Ansaugsammelleitung
4 Wasserkasten
9 Innenraum Dach 7 Türen,Seitenbereich (au?en) 5 Schalttafel, Mittelkonsole 8 Innenraum Boden, Querwand, Mitteltunnel und Gep?ckraum
11 Dach und Heckbereich,
Anbauteile au?en,
Front- und Heckdeckel
Figure 1 – Relevant areas on vehicle for requirements
5 Dashboard, center console
4 Plenum panel 3 Engine-mounted parts,
transmission mounted parts, disconnected intake plenum 2 Engine compartment 1 Front area
7 Doors, side area
(exterior)
8 Passenger compartment floor, cross panel, center tunnel and luggage compartment 9 Passenger
compartment roof
11 Roof and rear area, exterior add-on parts, engine hood and trunk lid/tailgate
Page 6
VW 801 01: 2005-06
Page 7
VW 801 01: 2005-06
2.4 Material requirements
All materials, lubricants and surface coating materials shall comply with the current edition of the Hazardous Substances Ordinance, as well as with the Environmental Standard for Vehicles according to VW 911 00 and with the emission behavior as stated in VW 501 80.
2.5 Operating types
The following operating types are distinguished:
2.5.1 Operating type 1
The DUT is not electrically operated.
─Operating type 1.1 No lines are connected to the DUT.
─Operating type 1.2 All lines are connected according to vehicle installation, but no
voltage is applied.
2.5.2 Operating type 2
The DUT is electrically operated with the supply voltage U PB (battery voltage) as in a cut-off vehicle (engine OFF).
All system components (e.g. sensors, actuators) and lines are connected to the DUT.
─Operating type 2.1 System/component functions are not activated (e.g. sleep
mode).
─Operating type 2.2 Systems/components with function and activation in normal
operating mode.
2.5.3 Operating type 3
The DUT is operated with the supply voltage U PA (engine/alternator running).
All system components (e.g. sensors, actuators) and lines are connected to the DUT.
─Operating type 3.1 System/component functions are not activated.
─Operating type 3.2 Systems/components with function and activation in normal
operating mode.
2.5.4 Laboratory setup operating type
Same as operating type 3.2, but test voltage and electrical load according to the respective test. 2.6 Functional statuses
This Section describes the functional status of the DUT during and after the test.
The functional status of the DUT is to be specified for each test. Additional requirements are to be defined and documented in the Performance Specifications.
Page 8
VW 801 01: 2005-06
2.6.1 Functional status A
All functions of the DUT perform as specified during and after exposure to the test parameters. If diagnostic control units are used, no error log entry shall occur.
2.6.2 Functional status B
All functions of the DUT perform as specified during exposure to the test parameters; however, one or more of them can go beyond the given tolerance. All functions return to normal operation after the end of test parameter exposure. Memory functions shall perform according to functional status A.
2.6.3 Functional status C
One or more functions of the DUT do not perform as specified during exposure to the test parameters but return automatically to normal operation after the end of exposure.
Malfunctioning is not permissible.
2.6.4 Functional status D
One or more functions of the DUT do not perform as specified during exposure to the test parameters; however, after resetting or a simple technical measure (e.g. exchanging a defective fuse) the DUT returns to normal operation after the end of exposure.
2.6.5 Functional status E
One or more functions of the DUT do not perform as specified during and after exposure to the test parameters; after the end of exposure the DUT has to be repaired or replaced.
2.7 General test conditions
A minimum of 6 DUT are to be tested. For increased requirements at least 10 DUT are to be tested.
All tests are performed using DUT that have already been conditioned (conditioning see Section 5.1.1).
If tolerances are not specified for temperatures, a tolerance of ± 2 °C shall apply.
Temperature measuring points according to DIN 50011-11 and DIN 50011-12.
Unless otherwise specified, all testing is performed at room temperature T RT and a relative air humidity of 25 to 75 %.
Test voltages shall be in accordance with Table 3. Other test voltages are only permissible after consultation with the responsible Volkswagen Group engineering departments. The test voltages shall be documented in the test report.
Table 3 – Test voltages
Test voltage 1) 12 V systems
(V) 24 V systems
(V)
U PA14 ± 0.1 28 ± 0.2
U PB12 ± 0.1 24 ± 0.2 1) Test voltage applied to the DUT
Page 9
VW 801 01: 2005-06 3 Electrical requirements
3.1 Operating voltages
For operating voltages see Table 4.
Table 4 – Voltages and notes for application
Nominal voltage
U N 1)
(V)Operating voltage
U Bmin U Bmax 1)
(V) (V)
Notes for application
12 6.0 15 for functions that shall retain their performance during starting
12 9.0 15 for functions that shall retain their performance with the engine cut off
12 10.8 15 for functions that shall retain their performance during engine operation
24 above values each
multiplied by 2
groups as with nominal voltage 12 V
1) Definitions acc. to DIN 72251
NOTE: Operating voltage applied to the DUT.
Ability to function in the network for network DUT shall be ensured according to voltage specifications from network Performance Specifications.
3.2 Operating voltage dips
Aim
This test simulates fast dips (ramps) of the operating voltage that might occur.
Test
The voltage curve represented in Figure 2 shall be tested on DUT which receive their supply voltage via terminal 30 or terminal 15.
The voltage curve represented in Figure 3 shall be tested on DUT which receive their supply voltage via terminal 75.
For specifications of voltage values, time curve and number of test cycles see Table 5.
All voltage curves specified in Table 5 are to be tested.
Page 10
VW 801 01: 2005-06
Figure 2 – Voltage curve for DUT with voltage supply via terminal 30 or terminal 15
Figure 3 – Voltage curve for DUT with voltage supply via terminal 75
Page 11
VW 801 01: 2005-06 Table 5 – Levels / voltages / durations of the voltage curve
Voltage
curve no.
1 2 3 4 5 6 7 8
Typical voltage curve for engaging starter
motors Standard
starting
voltage
pulse
Sharp
starting
voltage
pulse
Minimum
operating
voltage of
power
consuming
devices
relevant
during
engine
start-up
Ramp 1Ramp 2Ramp 3Tolerance
U B12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V
U S 5 V 3 V 4.5 V 3 V 6 V 3 V 3 V 3 V
U A 6.5 V 5 V 6.5 V 5 V 6.5 V 3 V 3 V 3 V
U R0 V 0 V 2 V 2 V 2 V 0 V 0 V 0 V
+0.2 V
t r≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms
t615 ms 15 ms 15 ms 15 ms 15 ms 15 ms 15 ms 15 ms
t750 ms50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms
t8 2 s 1 s 10 s 1 s 10 s 100 ms 1 s 10 s
t f100 ms 100 ms 100 ms 100 ms 100 ms 100 ms 1 s 10 s
± 10 %
f 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz ± 10 % Test cycles 10 10 10 10 10 10 10 10
Interval
between
cycles
1 s –
2 s 1 s -2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s ± 10 %
Requirements
See Table 6.
Table 6 – Functional statuses
Voltage curve
no.
1 2 3 4 5 6 7 8
Operating
voltage (V)
Note
U min.U max.Functional statuses
6 15 A 1 B 1 A 1 B 1 A 1 C 1 C C Power consuming devices relevant during engine start-up
9 15 C 1 C 1 C 1 C 1 C 1 C 1 C C Standard
10.8 15 C 1 C 1 C 1 C 1 C 1 C 1 C C Blanked-out during start-up
1) no error log entries, no false diagnoses (e.g. warning information)
Page 12
VW 801 01: 2005-06
3.3 Rear feed
Rear feed on terminal 15 is permissible up to a maximum voltage level of 1.0 V only.
NOTE: Capacitive rear feed
Discharge currents due to protective capacitances are no rear feed currents.
Capacitances displaying a discharge curve of tau ≥ 10 ms when disconnecting shall be decoupled from the terminal line by means of diodes.
3.4 Voltage level: Assignment of HIGH/LOW status
For DUT not containing a defined interface the voltage levels are assigned to the input states as follows:
HIGH detection: U ≥ U Bmin -2 V
LOW detection: U ≤ 2 V
The transition from LOW to HIGH and vice versa must only take place if the voltage exceeds the levels or falls below the levels defined here.
The following applies to all devices using CAN/MOST communication:
Voltage levels when connected to terminal 15.
HIGH detection: U ≥ 4 V
LOW detection: U ≤ 2 V
3.5 Function during undervoltage and overvoltage
When detecting overvoltage or undervoltage, the DUT changes into secure state, i.e. no malfunction shall appear. All functions of the DUT automatically return to normal operation after returning into the operating voltage range.
Functional restrictions shall be specified in the drawing or in the Performance Specifications.
Page 13
VW 801 01: 2005-06
All devices relevant for engine start
Voltage range
15.5 to 17 V
Functional status A
for t < 1 s
Error log entry
"overvoltage" acc. to
VW 801 14
Suppress all following
error log entries Assuring
operating
voltage dips
Figure 4 – Voltage definitions of network systems with a nominal voltage of 12 V
A hysteresis of ≤0.5 V is permissible in the transition from undervoltage or overvoltage to the operating voltage range.
The following applies to all control units relevant during engine start-up which have to be operable between 6 and 26 V: No error log entries due to other control units non-operable in the overvoltage and undervoltage range.
NOTE 1: Undervoltage range: Functions that shall retain their performance during starting are to be defined in the Performance Specifications.
NOTE 2: Overvoltage range: Functions that shall retain their performance during starting (e.g. external start simulation) are to be defined in the Performance Specifications.
NOTE 3: For directly connected bulbs, the following requirement does not apply: “Functional status
A for t < 1 s in the voltage range from 15.5 to 17 V”.
3.6 Operating current
The current change rate must be ≤ 20 A/s for DUT with a power draw ≥ 350 W. Otherwise, release by the responsible Volkswagen Group engineering department is required.
Operating type 3.2
Page 14
VW 801 01: 2005-06
3.7 Closed-circuit current consumption and closed-circuit charge consumption
Closed-circuit charge consumption is calculated as an integral of current consumption from the time of disconnection of terminal 15 extrapolated until 50 days after terminal 15 OFF. In this context, for all conceivable at-rest conditions of the vehicle, the highest possible closed-circuit charge consumption of the DUT is to be considered. The closed-circuit current equivalent is the current that results from the closed-circuit charge consumption divided by 50 days. See Figure 5.
Figure 5 – Closed-circuit charge consumption
The closed-circuit current consumption target for any DUT shall be 0 mA on principle. In the rest phase, a closed-circuit current of < 0.1 mA applies to DUT which have to be operated after disconnection of terminal 15. The closed-circuit charge consumption per DUT must not exceed 0.12 Ah within 50 days down-time. This charge consumption also applies to the necessary post-operation after disconnection of terminal 15.
Otherwise, release by the Volkswagen Group engineering department responsible for closed-circuit current management is required. Operating type 2.1
3.8
Reverse-polarity protection
Aim
The resistance of the DUT against reverse-polarity battery connection at external start is simulated. This test is not applicable to the following components:
─Alternators
─
Relays with fixed diodes, without external reverse-polarity protection
Test
The DUT is connected in the same way as it is in the vehicle with regard to fuse protection. A test voltage with reversed polarity is applied to all voltage inputs as well as all other terminals which are connected to the supply voltage. The outputs must not be activated.
OFF
Page 15
VW 801 01: 2005-06
Operating type Laboratory setup
Test duration (60 ± 6) s
Test voltage (see Table 6) according to the following applications:
Case 1:
Application with non-protected alternator.
Test voltage = U PC
Case 2:
Application with protected alternator.
Test voltage = U PA
Table 7 – Test voltages for reverse-polarity protection
Nominal voltage
(V) U PA
(V)
U PC
(V)
12 14 ± 0.1 4 ± 0.1
Requirement
Functional status D. Replacement of defective fuses is permissible.
3.9 Overcurrent resistance
3.9.1 Mechanical switches and contacts
Aim
The overcurrent protection of mechanical switches and contacts is simulated.
Test (for mechanical switches and contacts only)
Operating type Laboratory setup
Load holding time 10 min
Load at I N≤ 10 A 3 x I N
Load at I N > 10 A 2 x I N, but min. 30 A and max. 150 A
(Switch "ON" and "OFF" once under load.)
Each contact must be tested individually in the case of multiple-contact relays and multiple-contact switches.
Requirement
Functional status A.
3.9.2 Electronic outputs
Aim
The overcurrent protection of electronic outputs is simulated.
Test
Operating type Laboratory setup
Load holding time 30 min
Current load Current as required in Performance Specifications Requirement
Page 16
VW 801 01: 2005-06
3.10 Overvoltage resistance during long-term operation
Aim
A defective voltage regulator on the alternator is simulated.
Test
Operating type Laboratory setup
Temperature T = (T oB -20 °C)
Test voltage 17 V –0.2 V
Test duration 60 min
Test voltage application on all voltage inputs.
Requirement
Functional status A for all functions necessary for driving operation.
At least functional status C for all remaining functions.
3.11 Overvoltage resistance during short-term operation
Aim
An external start with increased voltage (jump-start) is simulated.
Test
Operating type Laboratory setup
Test voltage 26 V –0.2 V
Test duration 60 s
Test voltage application on all voltage inputs.
Requirement
Functional status A for all functions necessary for starting the vehicle.
At least functional status C for all remaining functions.
3.12 Superimposed alternating voltage
Aim
An alternating voltage superimposed on the operating voltage is simulated. Test
Operating type Laboratory setup
Test voltage 13 V
Amplitude of the superimposed
alternating voltage (sinusoidal) U = 1 V
Internal resistance of
voltage source ≤ 100 m?
Frequency range 50 Hz to 20 kHz
Type of wobble Linear triangle
Wobble duration 2 min
Test duration 10 min
Requirement
Page 17
VW 801 01: 2005-06
3.13 Slow lowering and increasing of the supply voltage
Aim
A slow discharging and charging of the battery is simulated.
Test
Operating type Laboratory setup
Test voltage application on all voltage inputs.
Supply voltage decrease from U Bmax to 0 V.
Supply voltage increase from 0 V to U Bmax.
Voltage change (0.5 ± 0.1) V per minute
Requirement
Functional status A, within the operating voltage range.
Functional status C, outside the operating voltage range.
3.14 Reset behavior at voltage dip
Aim
The reset behavior of the DUT is simulated at different voltage dips. This test applies to DUT with reset function (normally DUT with a microcontroller).
Test
Operating type Laboratory setup
Test procedure for ≥ 10 s Set U Bmin
Cycle for 5 s Lower the operating voltage U Bmin by 0.5 V
for ≥ 10 s Set U Bmin and test the function of the DUT
The voltage is lowered by a further 0.5 V in each cycle (see Figure 6).
The test comes to an end as soon as the voltage reaches ≤ 0.5 V. The voltage change takes place within 100 ms.
Page 18
VW 801 01: 2005-06
U Bmin Figure 6 – Voltage curve for U Bmin = 9 V 1
Requirement
Functional status A, within the operating voltage range. Functional status C, outside the operating voltage range. 3.15
Short-circuit protection
Aim
Short circuits on inputs and outputs are simulated.
The inputs and outputs (without load circuit) shall be short-circuit-proof to U PA and ground. Test
Short-circuit all inputs and outputs one after another against U PA and ground. This test is performed on activated and non-activated outputs. Operating type 3.2 Test duration 60 s for each short circuit NOTE: Only if operating voltage is applied.
Page 19
VW 801 01: 2005-06
Requirement
Functional status C.
3.16 Insulation strength
Aim
The insulation strength of the DUT between components without galvanic connection, e.g. pins, relays, windings or cables is simulated.
This test is only performed for DUT containing inductive components (e.g. motors, relays, coils). Test
Operating type Laboratory setup
Test temperature (35 ± 5)°C
Humidity (50 ± 5) %
Test voltage (rms voltage) 500 V AC, 50 Hz
Test duration 60 s
Application of test voltage
─on terminals without galvanic connection.
─between connection pins and conducting housing without galvanic connection.
─between connection pins and an electrode around the housing if the housing is non-conducting.
Requirement
Functional status C. Dielectric breakdown and electric arc are not permissible.
3.17 Insulation resistance
Aim
The insulation resistance between components without galvanic connection is determined.
Test
Operating type Laboratory setup
Test temperature (35 ± 5)°C
Humidity (50 ± 5) %
Test voltage 100 V DC voltage for component spacing < 3.8 mm
500 V DC voltage for component spacing > 3.8 mm
Test duration 60 s
Application of test voltage
─on terminals without galvanic connection.
─between connection pins and conducting housing without galvanic connection.
─between connection pins and an electrode around the housing if the housing is non-conducting.
Requirement
Functional status C, insulation resistance > 10 M?
Page 20
VW 801 01: 2005-06
3.18 Interruptions
Aim
A line interruption is simulated.
Test
Operating type 3.2
Pin interruption
Each pin individually on each plug (remove and replace pin again)
Interruption time 10 s
Plug interruption
Plug by plug (remove and replace plug again) under all operating states (sequence optional) Interruption time 10 s
Requirement
Functional status C.
3.19 Voltage drops
Aim
The maximum permissible voltage drops are tested.
Relays in control units are to be tested corresponding to relay contacts.
Test
Operating type Laboratory setup
Relay contacts
Voltage drop ≤ 5 mV/A, but ≤ 100 mV absolute
Testing with nominal current According to drawing, Performance Specifications or Technical
Supply Specification
Operating current According to drawing, Performance Specifications or Technical
Supply Specification
Switch contacts according to VW 801 02
Electronic outputs According to drawing, Performance Specifications or Technical
Supply Specification
Requirements
The permissible voltage drops shall neither be exceeded throughout the service life of the components nor during testing.
3.20 Electromagnetic compatibility (EMC)
3.20.1 Conducted interference
3.20.1.1 Transient emission of supply lines
Requirements according to TL 820 66, Performance Specifications or drawing.