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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1103 (Steering Column Switches) >> Diagnostic Tests >> Steering Column Switches >> Pinpoint Tests >> Pinpoint Test F: DTCs B2844 and U2472 - Ignition Fault and Unexpected Ignition State >> PINPOINT TEST F: DTCs B2844 AND U2472 - IGNITION FAULT AND UNEXPECTED IGNITION STATE

PINPOINT TEST F: DTCs B2844 AND U2472 - IGNITION FAULT AND UNEXPECTED IGNITION STATE

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
NOTE: Verify that battery voltage is 10 volts or greater.
  1. F1 RETRIEVE THE DTCs 
    • Connect the diagnostic tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Self Test SJB
    • Carry out the on-demand self test for the SJB. Retrieve and record any DTCs.
    • Is DTC U2472 present? 
    1. YES  : Go to  F2.
    2. NO  : For DTC B2844, go to  F5.

      For DTC B2A20, go to Pinpoint Test E .

      For all other SJB DTCs, REFER to MULTIFUNCTION ELECTRONIC MODULES .

  2. F2 CHECK THE IGNITION SWITCH 
    • Key in OFF position.
    • Carry out the Component Tests .
    • Is the ignition switch OK? 
    1. YES  : Go to  F3.
    2. NO  : INSTALL a new ignition switch. REFER to Ignition Switch . CLEAR the DTC. REPEAT the self-test.
  3. F3 CHECK CIRCUIT CDC33 (VT/GN) FOR AN OPEN 
    • Disconnect: Ignition Switch C250
    • Disconnect: SJB C2280a
      • Fig 1: Measuring Resistance Between Ignition Switch C250-6, Circuit CDC33 (VT/GN) & SJB C2280A-3
      GF0032067Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-6, circuit CDC33 (VT/GN), harness side and SJB C2280a-3, circuit CDC33 (VT/GN), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit CDC33 (VT/GN). CLEAR the DTC. REPEAT the self-test.
    2. NO  : Go to  F4.
  4. F4 CHECK CIRCUIT CDC34 (WH/OG) FOR AN OPEN 
    • Disconnect: SJB C2280b
      • Fig 2: Measuring Resistance Between Ignition Switch C250-1, Circuit CDC34 (WH/OG) & SJB C2280B-45
      GF0032068Courtesy of FORD MOTOR CO.
    • Measure the resistance between ignition switch C250-1, circuit CDC34 (WH/OG), harness side and SJB C2280b-45, circuit CDC34 (WH/OG), harness side.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : REPAIR circuit CDC34 (WH/OG). CLEAR the DTC. REPEAT the self-test.
    2. NO  : Go to  F7.
  5. F5 CHECK THE IGNITION CIRCUITS FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: Ignition Switch C250
    • Disconnect: SJB C2280a
    • Disconnect: SJB C2280b
    • Disconnect: Run/Start Relay
    • Measure the voltage between ground and:
      • SJB C2280a-3, circuit CDC33 (VT/GN), harness side.
      • SJB C2280b-32, circuit CDC35 (BU/WH), harness side.
      • SJB C2280b-45, circuit CDC34 (WH/OG), harness side.
      • run/start relay cavity 85, circuit CDC34 (WH/OG), harness side.
    • Is any voltage present? 
    1. YES  : REPAIR the affected circuit(s). CLEAR the DTC. REPEAT the self-test.
    2. NO  : Go to  F6.
  6. F6 CHECK THE IGNITION CIRCUITS FOR AN OPEN 
    • Measure the resistance between:
      • ignition switch C250-6, circuit CDC33 (VT/GN), harness side and SJB C2280a-3, circuit CDC33 (VT/GN), harness side.
      • ignition switch C250-7, circuit CDC35 (BU/WH), harness side and SJB C2280b-32, circuit CDC35 (BU/WH), harness side.
      • ignition switch C250-1, circuit CDC34 (WH/OG), harness side and SJB C2280b-45, circuit CDC34 (WH/OG), harness side.
      • ignition switch C250-1, circuit CDC34 (WH/OG), harness side and run/start relay cavity 1, circuit CDC34 (WH/OG), harness side.
    • Are any of the resistances greater than 10,000 ohms? 
    1. YES  : REPAIR the affected circuit(s). CLEAR the DTC. REPEAT the self-test.
    2. NO  : Go to  F7.
  7. F7 CHECK FOR CORRECT SJB OPERATION 
    • Check SJB connectors C2280a and C2280b for:
      • corrosion.
      • pushed-out pins.
      • spread terminal.
    • Connect: SJB C2280a
    • Connect: SJB C2280b
    • 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 . CLEAR the DTC. 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.
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