SFN-20240104F Revise trailer ABS power PDC 2017

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TICO Document #: SFN-20240104F (formerly TES 181)

Description of Procedure: REQUEST: TO HAVE THE CENTER PIN OF TRAILER BOX (TRAILER ABS POWER) TO BE SWITCHED BY KEY {IGNITION). THESE INSTRUCTIONS PROVIDE THE PROCEDURES TO REVISE THE TRAILER ABS POWER TO IGNITION.

Units Affected: N/A

Parts Required: TICO HARNESS P/N: 621033

Planned Labor: 1 hour

Instructions:

  1. Park vehicle on flat surface, apply parking brake, and chock wheels. If your company utilizes a “Lock Out, Tag Out” policy, you should employ it during this procedure.

  2. Disconnect main battery supply to chassis PDC at the batteries.

  1. Remove lower cab step.

  1. Remove cover from the chassis PDC.

  • PICTURE OF CHASSIS PDC WITH COVER REMOVED FOR REFERENCE.

  1. Use harness 621033. Install Ring Terminal to the output side of the ignition solenoid. Loosely install nut on solenoid.

  1. Route terminal end of harness towards fuse box along with current wire bundle. Remove the fuse box from the mount by pressing the lock.

  1. This shows back view of the fuse block. Remove blue wire locking tabs.

  1. Remove green cavity plugs from positions show.

  1. Insert the terminal end of the harness into this cavity. (yellow)

  2. Remove circuit 11 Trailer ABS"(blue) from cavity C2.

  1. Insert circuit "Trailer ABS"(blue) into cavity B2.

  1. Re-install wire locks.

  1. Replace fuse holder into mount. 30 amp Fuse is installed in new position.

  1. Re-work is complete. Route and tie up wires to avoid chafing. Replace cover on fuse holder. Tighten nut at solenoid.

  1. Connect chassis PDC battery supply cable at the batteries.

  1. Re-install chassis PDC cover.

  1. Re-install lower cab step.

  1. Verify correct operation.

  1. Remove “Lock Out, Tag Out” plaque.

  1. Return vehicle to service.