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Home >> Mercedes Benz >> 2015 >> Sprinter 3500 Van Cargo Extended, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes -- Pneumatic System -- 906 Chassis >> Testing & Repair >> Check Power Consumption Of TELMA Retarder - Ar43.40-D-1050-02C

Check Power Consumption Of TELMA Retarder - Ar43.40-D-1050-02C

TEST VALUES FOR RETARDER (ELECTRIC)

Number Designation Model 906 with code PB2
BE43.40-N-1002-01C Current per circuit A 29 (±10%)
  1. Unscrew bolts (1) from cover (2) of retarder relay box (K1).
  2. Remove cover (2)
    G10887663Courtesy of MERCEDES-BENZ USA
  3. Check condition of retarder relay box (K1) and relay (3, 4, 5) by visual inspection.

    IMPORTANT Replace in the event of a complaint on the retarder relay box (K1) or the relay (3, 4, 5), retarder relay box (K1).

  4. Visually check connection of electrical lines (11) in the retarder relay box (K1).

    IMPORTANT If necessary, repair electrical lines (11).

    G10887664Courtesy of MERCEDES-BENZ USA
  5. Use digital multimeter to check voltage supply of electrical line (7) and ground supply for ground lines (9).

    Digital multimeter

    IMPORTANT If necessary, repair electrical lines (7) or ground lines (9).

  6. Visually check connection of electrical lines (6) in the retarder relay box (K1).

    IMPORTANT If necessary, repair electrical lines (6).

  7. Visually check connection of retarder connector (X97).

    IMPORTANT If necessary, repair or replace retarder connector (X97).

  8. Visually check fuses (12) on relay (3, 4, 5).

    IMPORTANT If necessary, replace defective fuse (12), a spare fuse (13) is installed on the relay (3).

    G10887665Courtesy of MERCEDES-BENZ USA
  9. Pull fuse holder (14) under covering (17).
  10. Detach cap (15) from fuse holder (14) and visually check fuse (16).

    IMPORTANT Replace fuse (16) when damaged.

  11. Push cap (15) onto fuse holder (14) and slide fuse holder (14) under the covering (17).
    G10887666Courtesy of MERCEDES-BENZ USA
    G10887667Courtesy of MERCEDES-BENZ USA
  12. Expose electrical wiring harness (18) to retarder (L1)
  13. Clip current clamp (20) onto electrical wiring harness (18).

    Current clamp

  14. Press buttons on relay (3, 4, 5) in the retarder relay box (K1) one after the other and read off measurements on current clamp (20) then note down.

    Current clamp

    IMPORTANT The measurement values must be in tolerance.

    If one of the measurement values is out of tolerance, the retarder (L1) has to be replaced.

  15. Mount cover (2).

    IMPORTANT Check seal is correctly seated in the cover (2).

  16. Tighten bolts (1) on cover (2) of retarder relay box (K1).
    G10887668Courtesy of MERCEDES-BENZ USA
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