Perform Protective Earth Conductor And Insulation Resistance Test - AR54.10-P-0019-01LXM
Model 253.311/353/911/953
| Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) | Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. | AS00.00-Z-0035-01A | |
| General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system | AH00.00-Z-0300-01A | ||
| Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | ||
| Notes on battery | AH54.10-P-0001-01A | ||
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| 000 588 00 19 00 Insulation measuring unit | WS54.00-P-0046B |
| Number | Designation | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|
| BA54.10-P-1004-02H | Screw / bolt potential equalization line to high-voltage battery | Nm | 16 |
| Number | Designation | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|
| BA54.10-P-1005-02H | Nut, potential equalization line to body | Nm | 16 |
| Number | Designation | Model 253 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in)) | |
|---|---|---|---|
| BA54.10-P-1013-02H | Screw / bolt potential equalization line to charger | Nm | 9 |
The protective ground conductor and insulation resistance measurement should only be performed after the vehicle has been de-energized.
Otherwise test results may be incorrect.
The protective ground conductor and insulation resistance measurement on a high-voltage component must never be performed between HV+ (positive) and HV- (negative).
The high-voltage component can otherwise be damaged.
Use an insulation resistance meter as the test equipment.
Carefully connect probes of insulation resistance meter to high-voltage connections.
Otherwise the high-voltage connections may be damaged.
- Check and ensure that the insulation resistance meter is functioning properly in accordance with specifications from the manufacturer.
- Check equipotential bonding lines (3, 4) at body ground point (5) for tight seating. Model 253.311/353/911/953 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))
- Check equipotential bonding line (4) at attachment point of high-voltage battery charger (1) for tight seating. Model 253.311/353/911/953 with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))
- Check equipotential bonding line (3) at attachment point of high-voltage battery (2) for tight seating. Model 253.311/353/911/953
with code ME05 (Hybrid drive 85 kW-94 kW variant (incl. plug-in))
Perform HV-AC circuit-1-phase protective ground conductor and insulation resistance measurement (vehicle socket measuring point) at the charger feed-in socket (X58/23)
5-pin charger feed-in socket (X58/23)
7-pin charger feed socket (X58/23)
- Open socket flap.
When the vehicle has been de-energized, the socket flap can only be opened using the diagnostic system.
- Open cover of charger feed-in socket (X58/23).
- Adjust insulation resistance meter for resistance test.
- Perform resistance test using insulation resistance meter between protective ground conductor (PE) and body ground point (5) in load compartment.
- Adjust insulation resistance meter for insulation resistance test and 500 V.
- Perform insulation resistance test using insulation resistance meter between phase L1 (L1) and protective ground conductor (PE).
- Perform insulation resistance test using insulation resistance meter between neutral conductor (N) and protective ground conductor (PE).