Perform Protective Earth Conductor And Insulation Resistance Test - AR54.10-P-0019-01GQA

MODEL 166.063

Risk of death when touching components on vehicles with high-voltage on-board electrical system	Do not touch damaged or defective components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers) must not carry out any work on high-voltage on-board electrical systems.	AS54.00-Z-0001-01A
Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Note on high-voltage on-board electrical system		AH54.00-P-0010-01A
Evaluation of high-voltage components		AH54.00-P-6500-01SXH
Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A

HIGH-VOLTAGE BATTERY

Number	Designation		Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))
BA54.10-P-1006-02G	Screw/bolt, potential equalization line to high-voltage battery	Nm	16

HIGH-VOLTAGE BATTERY

Number	Designation		Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))
BA54.10-P-1007-02G	Nut, potential equalization line to body	Nm	16

HIGH-VOLTAGE BATTERY

Number	Designation		Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))
BA54.10-P-1014-02G	Screw/bolt, protective earth (PE) conductor to charger	Nm	9

HIGH-VOLTAGE BATTERY

Number	Designation		Model 166 with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUGIN))
BA54.10-P-1015-02G	Screw/bolt, potential equalization line to charger	Nm	9

The resistance/insulation resistance measurement should only be performed after the vehicle has been de-energized.

Otherwise, the test results may be falsified.

The resistance/insulation resistance measurement on the high-voltage component must never be performed between HV+ (positive) and HV-(negative).

The high-voltage component can otherwise be damaged.

A resistance/insulation resistance tester is used for the measurement.

Carefully connect the probes of the resistance/insulation resistance tester to the high-voltage connections.

Otherwise the high-voltage connections may be damaged.

Check that testing tools are functioning properly in accordance with specifications from manufacturer.
Perform visual inspection to determine whether protective earth conductor line (2) is connected to the high-voltage battery charger (1).
Check that protective earth conductor line (2) is seated securely at threaded connection on high-voltage battery charger (1).
Perform visual inspection to determine whether high-voltage battery charger potential equalization line (4) is connected to ground point (5) and to high-voltage battery charger attachment point (3).
Check that high-voltage battery charger potential equalization line (4) is seated securely at ground point (5) and high-voltage battery charger attachment point (3).
Perform visual inspection to determine whether high-voltage battery charger potential equalization line (7) is connected to ground point (8) and high-voltage battery charger attachment point (6).
Check that high-voltage battery charger potential equalization line (7) is seated securely at ground point (8) and high-voltage battery attachment point (6).

Conduct resistance/insulation resistance measurement of HV-AC circuit-1-phase (vehicle socket as measuring point) charger feed-in socket (X58/23)

SAE charger feed-in socket

ECE charger feed-in socket
Calibrate resistance/insulation resistance tester.
Open socket flap in bumper.
When the vehicle has been de-energized, the charger feed socket flap can only be opened by means of diagnosis.
Open cover of charger feed-in socket (X58/23).
Set resistance/insulation resistance tester to resistance testing mode.
Perform resistance test using resistance/insulation resistance tester between protective earth conductor (PE) and ground point in luggage compartment.
If the ground fault circuit interrupter integrated in the charging cable or the ground fault circuit interrupter of the external power supply has been triggered.

Specified value < 1 Ω (+0.9).
Perform insulation resistance test using resistance/insulation resistance tester between phase L1 (L1) and protective earth conductor (PE).
If the ground fault circuit interrupter integrated in the charging cable or the ground fault circuit interrupter of the external power supply has been triggered.

To do so, set resistance/insulation resistance tester to 500 V.

Specified value > 1 MΩ.
Perform insulation resistance test using resistance/insulation resistance tester between neutral conductor (N) and protective earth conductor (PE).

If the ground fault circuit interrupter integrated in the charging cable or the ground fault circuit interrupter of the external power supply has been triggered.

Specified value > 1 MΩ.