LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2002 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2409 (Steering Column Switches -- F250-F550 Super Duty) >> Diagnostic Tests >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test E: DTC B2A20 - Ignition Stuck in START >> Pinpoint Test E: DTC B2A20 - Ignition Stuck In Start

Pinpoint Test E: DTC B2A20 - Ignition Stuck In Start

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. 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 
    • Inspect the ignition switch for mechanical function. Refer to Component Tests  Ignition Switch - Mechanical.
    • Is the ignition switch OK? 
    1. YES  : Go to  E2.
    2. NO  : INSTALL a new ignition switch. REFER to Ignition Switch . CLEAR the DTCs. REPEAT the self-test.
  2. E2 CHECK THE IGNITION SWITCH FOR A SHORT 
    • Carry out the Ignition Switch Component Test. Refer to COMPONENT TESTING.
    • Is the ignition switch OK? 
    1. YES  : Go to  E3.
    2. NO  : INSTALL a new ignition switch. REFER to Ignition Switch . CLEAR the DTCs. REPEAT the self-test.
  3. E3 CHECK CIRCUIT CBP28 (GY/VT) FOR A SHORT TO VOLTAGE 
    • Connect: Ignition Switch C250
    • Disconnect: SJB Fuse 28 (5A)
    • Key in ON position.
      • Fig 1: Checking Circuit CBP28 (GY/VT) For A Short To Voltage
      GF0049500Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB fuse 28 (5A), output side and ground.
    • Is any voltage present? 
    1. YES  : Go to  E4.
    2. NO  : Go to  E5.
  4. E4 ISOLATE THE Audio Control Module (ACM) 
    • Key in OFF position.
    • Disconnect: ACM C240A
    • Key in ON position.
      • Fig 2: Isolating Audio Control Module (ACM)
      GF0049500Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB fuse 28 (5A), output side and ground.
    • Is any voltage present? 
    1. YES  : REPAIR circuit CBP28 (GY/VT). CLEAR the DTC. REPEAT the self-test.
    2. NO  : INSTALL a new ACM. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS article. CLEAR the DTCs. REPEAT the self-test.
  5. E5 CHECK CIRCUITS CDC35 (BU/WH) AND CDC38 (WH/VT) FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: PCM C1232B (diesel engine with OTIS)
    • Disconnect: PCM C175T (gasoline engine)
    • Disconnect: Starter Relay
    • Disconnect: OTIS Diode
    • Key in ON position.
      • Fig 3: Checking Circuits CDC35 (BU/WH) & CDC38 (WH/VT) For A Short To Voltage
      GF0023060Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB fuse 28 (5A), input side and ground.
    • Is any voltage present? 
    1. YES  : REPAIR circuit CDC35 (BU/WH) and/or CDC38 (WH/VT). CLEAR the DTCs. REPEAT the self-test.
    2. NO  : For diesel engines without One-Touch Integrated Start (OTIS)  , INSTALL a new starter relay. CLEAR the DTCs. REPEAT the self-test.

      For diesel engines with OTIS and all gasoline engines  , go to  E6.

  6. E6 ISOLATE THE PCM 
    • Connect: PCM C1232B (diesel with OTIS)
    • Connect: PCM C175T (gasoline engine)
      • Fig 4: Checking Circuit For Voltage
      GF0023060Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB fuse 28 (5A), input side and ground.
    • Is any voltage present? 
    1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - GASOLINE ENGINES article for gasoline engines and ELECTRONIC ENGINE CONTROLS - DIESEL ENGINE article for diesel engines. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  E7.
  7. E7 ISOLATE THE STARTER RELAY 
    • Connect: Starter Relay
      • Fig 5: Checking Circuit For Voltage
      GF0023060Courtesy of FORD MOTOR CO.
    • Measure the voltage between SJB fuse 28 (5A), input side and ground.
    • Is any voltage present? 
    1. YES  : INSTALL a new starter relay. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  E8.
  8. E8 CHECK THE OTIS DIODE FOR A SHORT OR AN OPEN 
    • Check the diode.
    • Is the diode shorted or open? 
    1. YES  : INSTALL a new OTIS diode. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  E9.
  9. E9 CHECK THE SJB CONNECTORS 
    • Disconnect: SJB C2280E
    • Check SJB connectors C2280B and C2280E for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: SJB C2280B
    • Connect: SJB C2280E
    • Make sure the connectors are seated correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES article. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
scientia non olet · About LEMON Manuals