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Pinpoint Test B: The Abs Module Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. B1 CHECK THE ABS MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: ABS Module C135
    • Key in ON position.
    • Measure the voltage between the ABS module, harness side and ground as follows:
      Connector-Pin Circuit
      C135-1 SBB15 (WH/RD)
      C135-25 SBB57 (RD)
      C135-30 CBB50 (YE/OG)
    • Are the voltages greater than 10 volts? 
    1. YES  : Go to  B2.
    2. NO  : VERIFY the battery junction box (BJB) fuse 15 (40A) or fuse 50 (10A) or fuse 57 (40A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
  2. B2 CHECK THE ABS MODULE GROUND CIRCUITS FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between the ABS module, harness side and ground as follows:
      Connector-Pin Circuit
      C135-13 GD121 (BK/YE)
      C135-38 GD121 (BK/YE)
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  B3.
    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
  3. B3 CHECK THE HS-CAN CIRCUITS BETWEEN THE DATA LINK CONNECTOR (DLC) AND THE ABS MODULE FOR AN OPEN 
      Fig 1: Measuring Resistance Between ABS module C135-5, Circuit VDB04 (WH/BU) & DLC C251-6
      GF0032341Courtesy of FORD MOTOR CO.
    • Measure the resistance between the ABS module C135-5, circuit VDB04 (WH/BU), harness side and the DLC C251-6, circuit VDB04 (WH/BU), harness side.
      • Fig 2: Measuring Resistance Between ABS module C135-6, Circuit VDB05 (WH) & DLC C251-14
      GF0032342Courtesy of FORD MOTOR CO.
    • Measure the resistance between the ABS module C135-6, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  B4.
    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
  4. B4 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect the ABS module connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the ABS module connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new ABS module. REFER to VEHICLE DYNAMIC SYSTEMS . CLEAR the DTCs. REPEAT the network test with the scan tool.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.
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