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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1355 (Handles, Locks, Latches And Entry Systems) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems >> Pinpoint Tests >> Pinpoint Test E: DTC B2A25 >> Pinpoint Test E: DTC B2A25

Pinpoint Test E: DTC B2A25

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
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 SJB DTCs FROM THE SELF-TEST 
    • Check the recorded results from the SJB  self-test.
    • Is DTC B2A25 present? 
  2. E2 CHECK THE LH DOOR LOCK CONTROL SWITCH 
    • Disconnect: LH Door Lock Control Switch C505.
    • Repeat the SJB  on-demand self-test.
    • Is DTC B2A25 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 SJB  on-demand self-test.
    • Is DTC B2A25 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 INPUT CIRCUIT OR THE UNLOCK INPUT CIRCUIT FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Disconnect: SJB  C2280c.
    • Measure the resistance between the SJB  C2280c-17, circuit CPK19 (BU/GN), harness side and ground; and between the SJB  C2280c-4, circuit CPK23 (YE/VT), harness side and ground.
      Fig 1: Measuring Resistance Between SJB C2280c-17, Circuit CPL27 (WH/BN) And Ground
      G06071149Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes:  GO to E5  .
    • No:  REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  5. E5 CHECK FOR CORRECT SJB OPERATION 
    • Disconnect all the SJB  connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the SJB  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 SJB  . REFER to SMART JUNCTION BOX (SJB) . 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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