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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1409 (Steering Column Switches) >> Diagnosis And Testing >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test F: DTCs B2844 and U2472 >> PINPOINT TEST F: DTCs B2844 AND U2472

PINPOINT TEST F: DTCs B2844 AND U2472

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 Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. F1 CHECK THE SJB DTCs 
    • Review the DTCs retrieved during the Inspection and Verification.
    • Is DTC B2A20 present? 
  2. F2 CHECK THE IGNITION SWITCH PIDs 
    • Connect the scan tool.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the following ignition switch PIDs while cycling the ignition switch through each position:
      • IGN_O_ECU
      • IGN_A_ECU
      • IGN_R_ECU
      • IGN_S_ECU
    • Does each PID display YES when the ignition switch is moved into the corresponding position and NO when the switch is moved to another position? 
    • Yes:  The condition is not present at this time. INSPECT SJB  connectors C2280B, C2280D and C2280E for corrosion, spread terminals and/or pushed-out pins. REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test.
    • No:  If IGN_A_ECU is displayed YES at all times, GO to F3  .

      If IGN_R_ECU is displayed YES at all times, GO to  F6.

      If IGN_S_ECU displayed YES at all times, GO to PINPOINT TEST E .

      If IGN_O_ECU displayed YES at all times, GO to PINPOINT TEST A .

      If IGN_A_ECU displayed NO at all times, GO to PINPOINT TEST B .

      If IGN_R_ECU displayed NO at all times, GO to PINPOINT TEST C .

      If IGN_S_ECU displayed NO at all times, GO to PINPOINT TEST D .

  3. F3 CHECK SJB FUSE 43 (10A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 43 (10A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_A_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F4  .
    • No:  REPAIR circuit CBP43 (GY). CLEAR the DTCs. REPEAT the self-test.
  4. F4 CHECK SJB FUSE 45 (5A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 45 (5A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_A_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F5  .
    • No:  REPAIR circuit CBP45 (YE). CLEAR the DTCs. REPEAT the self-test.
  5. F5 CHECK THE IGNITION SWITCH 
    • Ignition OFF.
    • Disconnect: Ignition Switch C250.
    • Carry out the Ignition Switch component test.

      Refer to COMPONENT TESTING (Except Hybrid) ,COMPONENT TESTING (Hybrid) for component testing.

    • Did the ignition switch pass the component test? 
    • Yes:  REPAIR circuit CDC33 (VT/GN). CLEAR the DTCs. REPEAT the self-test.
    • No:  INSTALL a new ignition switch. REFER to IGNITION SWITCH . TEST the system for normal operation. CLEAR the DTCs. REPEAT the self-test.
  6. F6 CHECK BJB FUSE 35 (10A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: Battery Junction Box (BJB) Fuse 35 (10A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F7  .
    • No:  REPAIR circuit CBB35 (YE/GY). CLEAR the DTCs. REPEAT the self-test.
  7. F7 CHECK SJB FUSE 29 (5A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 29 (5A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F8  .
    • No:  REPAIR circuit CBP29 (WH/VT). CLEAR the DTCs. REPEAT the self-test.
  8. F8 CHECK SJB FUSE 31 (10A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 31 (10A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F9  .
    • No:  REPAIR circuit CBP31 (WH/BU). CLEAR the DTCs. REPEAT the self-test.
  9. F9 CHECK SJB FUSE 35 (10A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 35 (10A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes: Hybrid:  GO to F10  .

      Non-hybrid:  GO to  F13.

    • No:  REPAIR circuit CBP35 (YE/GY). CLEAR the DTCs. REPEAT the self-test.
  10. F10 CHECK SJB FUSE 36 (5A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 36 (5A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F11  .
    • No:  REPAIR circuit CBP36 (BU/BN). CLEAR the DTCs. REPEAT the self-test.
  11. F11 CHECK SJB FUSE 37 (10A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 37 (10A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F12  .
    • No:  REPAIR circuit CBP37 (WH). CLEAR the DTCs. REPEAT the self-test.
  12. F12 CHECK SJB FUSE 46 (7.5A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  Fuse 46 (7.5A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F13  .
    • No:  REPAIR circuit CBP46 (WH/BU). CLEAR the DTCs. REPEAT the self-test.
  13. F13 CHECK BJB FUSE 25 (5A) OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: BJB  Fuse 25 (5A).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes: Hybrid:  GO to F14  . Non-hybrid:  GO to  F15.
    • No: Hybrid:  REPAIR circuit CBB25 (WH/OG). CLEAR the DTCs. REPEAT the self-test.

      Non-hybrid:  REPAIR circuit CBP34 (VT/BN). CLEAR the DTCs. REPEAT the self-test.

  14. F14 CHECK THE PCM FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: PCM C175B.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - SJB  .
    • Monitor the IGN_R_ECU PID while cycling the ignition switch through each position.
    • Does the PID display YES when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F15  .
    • No:  GO to  F18.
  15. F15 CHECK THE IGNITION SWITCH RUN OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  C2280B.
    • Disconnect: SJB  C2280D.
    • Disconnect: SJB  C2280E.
    • Ignition ON.
    • Measure the voltage between SJB  C2280E-1, circuit CDC34 (WH/OG), harness side and ground while moving the ignition switch through all switch positions.
      Fig 1: Measuring Voltage Between SJB C2280E-1 And Ground
      G06094676Courtesy of FORD MOTOR CO.
    • Is voltage present when the ignition switch is moved through all switch positions? 
    • Yes:  GO to F16  .
    • No:  GO to  F17.
  16. F16 CHECK THE IGNITION SWITCH 
    • Ignition OFF.
    • Disconnect: Ignition Switch C250.
    • Carry out the Ignition Switch component test.

      Refer to COMPONENT TESTING (Except Hybrid),COMPONENT TESTING (Hybrid) for component testing.

    • Did the ignition switch pass the component test? 
    • Yes:  REPAIR circuit CDC34 (WH/OG). CLEAR the DTCs. REPEAT the self-test.
    • No:  INSTALL a new ignition switch. REFER to IGNITION SWITCH . CLEAR the DTCs. REPEAT the self-test.
  17. F17 CHECK FOR CORRECT SJB OPERATION 
    • Ignition OFF.
    • Disconnect: All SJB  Connectors.
    • Check the SJB  connectors for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: All SJB  Connectors (making sure that they are seated correctly).
    • Make sure the connectors are seated correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes:  INSTALL a new SJB  . REFER to REMOVAL AND INSTALLATION . CLEAR the DTC. REPEAT the self-test.
    • No:  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
  18. F18 CHECK FOR CORRECT PCM OPERATION 
    • Ignition OFF.
    • Disconnect: All PCM Connectors.
    • Check the PCM connectors for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: All PCM Connectors (making sure that they are seated correctly).
    • Make sure the connectors are seated correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes:  INSTALL a new SJB  . REFER to REMOVAL AND INSTALLATION . CLEAR the DTC. REPEAT the selftest.
    • No:  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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