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Home >> Ford >> 2000 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - 4WAL - Excursion & F250-F550 Super Duty >> Diagnostic Tests >> Test A: No Communication With ABCM

Test A: No Communication With ABCM

  1. Turn ignition switch to OFF position. Connect NGS or scan tool. Retrieve and record any DTCs. If DTCs are retrieved, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS  table. If no DTCs are retrieved, go to next step.
  2. Turn ignition switch to OFF position. Disconnect ABCM connector. Install breakout box and adapter. Turn ignition on. Measure voltage between ground and breakout box pin No. 14 (except late production Excursion) or No. 16 (late production Excursion). If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, check fuse No. 24 (2000-01 Pickup - 5-amp) or No. 25 (except 2000-01 Pickup - 10-amp) in junction box fuse/relay panel behind lower left side of dash. If fuse is okay, check and/or repair Tan/Red wire circuit. Recheck system operation.
  3. Turn ignition switch to OFF position. Disconnect ABCM connector. Measure resistance between ABCM Light Green/Yellow wire circuit and ground. If resistance is less than 5 ohms, check and repair ground wire circuit(s) as needed. If resistance is more than 5 ohms, repair Light Green/Yellow wire circuit. Recheck system operation.
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