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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test E: DTC B126A: 01 >> Pinpoint Test E: DTC B126A: 01

Pinpoint Test E: DTC B126A: 01

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NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK THE RECORDED BCM DTCs FROM THE SELF-TEST 
    • Check the recorded results from the BCM self-test.
    • Is DTC B126A: 01 present? 
  2. E2 CHECK THE LH DOOR LOCK CONTROL SWITCH 
    • Disconnect: LH Door Lock Control Switch C505.
    • Repeat the BCM self-test.
    • Is DTC B126A: 01 retrieved again? 
    • Yes  : LEAVE the switch disconnected. GO to E3.
    • No  : INSTALL a new LH door lock control switch. REFER to DOOR LOCK CONTROL SWITCH . TEST the system for normal operation.
  3. E3 CHECK THE RH DOOR LOCK CONTROL SWITCH 
    • Disconnect: RH Door Lock Control Switch C605.
    • Repeat the BCM self-test.
    • Is DTC B126A: 01 retrieved again? 
    • Yes  : LEAVE the switch disconnected. GO to E4.
    • No  : INSTALL a new RH door lock control switch. REFER to DOOR LOCK CONTROL SWITCH . TEST the system for normal operation.
  4. E4 CHECK THE LOCK OR UNLOCK INPUT CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: BCM C2280C.
    • Measure the resistance between the RH Door Lock Control Switch C605-1, circuit CPK19 (BU/GN), harness side and ground; and between the RH Door Lock Control Switch C605-3, circuit CPK23 (YE/VT), harness side and ground.
      Fig 1: Measuring Resistance Between RH Door Lock Control Switch C605-1, Circuit CPK19 (BU/GN) And Ground
      G06259712Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
    • Yes  : GO to E5.
    • No  : REPAIR circuit CPK19 (BU/GN) or circuit CPK23 (YE/VT) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
  5. E5 CHECK FOR CORRECT BCM OPERATION 
    • Disconnect all the BCM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the BCM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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