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Test A: Anti-Lock Brake Control Module Does Not Respond To Scan Tool

  1. Turn ignition off. Connect New Generation Star (NGS) tester to Data Link Connector (DLC) C252. DLC C252 is located below driver's side of instrument panel, to left of steering column, above fuse junction panel. Disconnect ABS control module connector C249, located behind center of dash. Inspect connector for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. Measure resistance of Yellow/Red wire between terminal No. 22 at ABS control module connector and terminal No. 1 at DLC C252. See Fig 1 and Fig 2 . If resistance is less than 5 ohms, go to step  3. If resistance is 5 ohms or more, go to next step.
  2. Measure resistance of Yellow/Red wire between female side of in-line connector C170 terminal No. 51 and DLC C252 terminal No. 1. In-line connector C170 is located behind left side of dash above fuse junction panel. See Fig 3. If resistance is less than 5 ohms, repair open in Yellow/Red wire between ABS control module connector C249 and in-line connector C170. Retest system. If resistance is 5 ohms or more, repair open in Yellow/Red wire between in-line connector C170 and DLC C252. Retest system.
  3. Measure resistance of Yellow/Black wire between terminal No. 11 at ABS control module connector C249 and terminal No. 2 at DLC C252. If resistance is less than 5 ohms, replace ABS control module. Retest system. If resistance is 5 ohms or more, go to next step.
  4. Measure resistance of Yellow/Black wire between female side of in-line connector C170 terminal No. 63 and DLC C252 terminal No. 2. In-line connector C170 is located behind left side of dash, above fuse junction panel. See Fig 3. If resistance is less than 5 ohms, repair open in Yellow/Black wire between ABS control module connector C249 and in-line connector C170. Retest system. If resistance is 5 ohms or more, repair open in Yellow/Black wire between in-line connector C170 and DLC C252. Retest system.
Fig 1: Identifying ABS Control Module Connector C249 Terminals
G99A08567Courtesy of FORD MOTOR CO.
Fig 2: Identifying DLC C252 Terminals
G99C08568Courtesy of FORD MOTOR CO.
Fig 3: Identifying Female Side Of In-Line Connector C170 Terminals
G99E08569Courtesy of FORD MOTOR CO.
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