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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1324 (Steering Column Switches) >> Diagnosis And Testing >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test E: B2A20 >> Pinpoint Test E: B2A20

Pinpoint Test E: B2A20

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. E1 CHECK THE IGNITION SWITCH MECHANICAL FUNCTION 
    • Yes:  GO to E2  .
    • No:  INSTALL a new ignition switch. REFER to IGNITION SWITCH . CLEAR the DTCs. REPEAT the self-test.
  2. E2 CHECK THE IGNITION SWITCH ELECTRICAL FUNCTION 
    • 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:  GO to E3  .
    • No:  INSTALL a new ignition switch. REFER to IGNITION SWITCH . CLEAR the DTCs. REPEAT the self-test.
  3. E3 CHECK THE SJB START POWER OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Connect: Ignition Switch C250.
    • Disconnect: SJB  Fuse 28 (5A).
    • Ignition ON.
    • Measure the voltage between SJB  fuse 28 (5A), circuit CBP28 (GY/VT), output side and ground.
      Fig 1: Measuring Voltage Between SJB Fuse 28 (5A) And Ground
      G06094666Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  GO to  E11.
    • No: Non-Hybrid:  GO to E4  .

      Hybrid:  GO to  E9.

  4. E4 CHECK THE SJB START POWER INPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  C2280B.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-32, circuit CDC54 (WH/GN), harness side and ground.
      Fig 2: Checking Circuit CDC54
      G06094667Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  GO to E5  .
    • No:  GO to  E13.
  5. E5 ISOLATE THE SJB START POWER CIRCUIT 
    • Ignition OFF.
    • Disconnect: Battery Junction Box (BJB) One-Touch Integrated Start (OTIS) Diode.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-32, circuit CDC54 (WH/GN), harness side and ground.
      Fig 3: Checking Circuit CDC54
      G06094667Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  GO to E6  .
    • No:  GO to  E8.
  6. E6 CHECK THE PCM IGNITION SWITCH INPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: Starter Relay.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-32, circuit CDC54 (WH/GN), harness side and ground.
      Fig 4: Checking Circuit CDC54
      G06094667Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  GO to E7  .
    • No:  INSTALL a new starter relay. CLEAR the DTCs. REPEAT the self-test.
  7. E7 CHECK THE PCM FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: PCM C175B.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-32, circuit CDC54 (WH/GN), harness side and ground.
      Fig 5: Checking Circuit CDC54
      G06094667Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit CDC54 (WH/GN). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to  E15.
  8. E8 CHECK THE IGNITION SWITCH START POWER OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: PCM C175B.
    • Ignition ON.
    • Measure the voltage between BJB OTIS  diode, circuit CDC35 (BU/WH), input side and ground.
      Fig 6: Checking Circuit CDC35
      G06393368Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit CDC35 (BU/WH). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to  E15.
  9. E9 CHECK THE SJB IGNITION SWITCH INPUT CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: SJB  C2280B.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-32, circuit CDC35 (BU/WH), harness side and ground.
      Fig 7: Checking Circuit CDC54
      G06094667Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  GO to E10  .
    • No:  GO to  E13.
  10. E10 ISOLATE THE PCM 
    • Ignition OFF.
    • Disconnect: PCM C175B.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-32, circuit CDC35 (BU/WH), harness side and ground.
      Fig 8: Checking Circuit CDC54
      G06094667Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit CDC35 (BU/WH). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to  E15.
  11. E11 ISOLATE THE ACM 
    • Ignition OFF.
    • Disconnect: ACM  C240A.
    • Ignition ON.
    • Measure the voltage between SJB  fuse 28 (5A), circuit CBP28 (GY/VT), output side and ground.
      Fig 9: Measuring Voltage Between SJB Fuse 28 (5A) And Ground
      G06094666Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  GO to E12  .
    • No:  GO to  E14.
  12. E12 ISOLATE THE SJB 
    • Ignition OFF.
    • Disconnect: SJB  C2280B.
    • Ignition ON.
    • Measure the voltage between SJB  C2280B-2, circuit CBP28 (GY/VT), harness side and ground.
      Fig 10: Checking Circuit CBP28
      G06094675Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit CBP28 (GY/VT). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to E13  .
  13. E13 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).
    • 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 DTCs. 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.
  14. E14 CHECK FOR CORRECT ACM OPERATION 
    • Disconnect: All ACM  Connectors.
    • Check all ACM  connectors for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: All ACM  Connectors (making sure that all connectors are seated correctly).
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes:  INSTALL a new ACM  . REFER to AUDIO CONTROL MODULE (ACM) . CLEAR the DTCs. 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.
  15. E15 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect: All PCM Connectors.
    • Check all PCM connectors for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: All PCM Connectors (making sure that all connectors are seated correctly).
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
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