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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1631 (Anti-Theft System - Passive Anti-Theft System (Pats)) >> Diagnostic Tests >> Anti-Theft >> Pinpoint Tests >> Pinpoint Test G: DTC U0100 and U2511 - CAN - Data Mis-Match (Receive Data Does Not Match Expected) & Lost Communication With ECM/PCM >> Pinpoint Test G: DTC U0100 - Lost Communication With ECM/Pcm, DTC U2511 - Can - Data Mis-Match (Receive Data Does Not Match Expected)

Pinpoint Test G: DTC U0100 - Lost Communication With ECM/Pcm, DTC U2511 - Can - Data Mis-Match (Receive Data Does Not Match Expected)

WARNING: This page is about a different car, the 2009 Mercury Sable, 2009 Ford Taurus X, and 2009 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When a new IC is installed, the PATS keys must be programmed into the new IC.
NOTE: When a new IC is installed, the parameters must be reset in the IC and the PCM.
  1. G1 CHECK THE BATTERY STATE OF CHARGE (SOC) 
    • Key in OFF position.
    • Check the battery state of charge (SOC) with the battery condition test. Refer to BATTERY, MOUNTING AND CABLES article.
    • Does the battery pass the battery condition test? 
    1. YES  : Go to  G2.
    2. NO  : REFER to CHARGING SYSTEM - GENERAL INFORMATION article to diagnose the low battery voltage condition.
  2. G2 CHECK FOR MODULE COMMUNICATION ON THE HS-CAN 
    • Connect the diagnostic tool.
    • Key in ON position.
    • Carry out the network test using the scan tool.
    • Is the scan tool unable to communicate with any of the modules on the HS-CAN? 
    1. YES  : REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the module that is not communicating with the scan tool.
    2. NO  : Go to  G3.
  3. G3 INSPECT THE HS-CAN CIRCUITRY 
    • Key in OFF position.
    • Inspect all of the HS-CAN network, including the pin crimps, connector fit, corroded/bent/pushed-out/damaged pins and splice integrity in the 8 (10, if equipped with an auxiliary protocol interface module [APIM]) splices and 8 connections (4 connectors) between the PCM and the IC. This includes:
      • C175B (PCM)
      • S114
      • S115
      • C211
      • S371 (if equipped with APIM)
      • S372 (if equipped with APIM)
      • S300
      • S302
      • S301
      • S303
      • C212
      • S208
      • S209
      • C220 (IC)
    • Does the HS-CAN network pass the component inspection? 
    1. YES  : Go to  G4.
    2. NO  : REPAIR the HS-CAN circuitry as necessary. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
  4. G4 CHECK FOR CORRECT PCM OPERATION 
    NOTE: When a new PCM is installed, the PATS keys do not need to be programmed into the IC.
    NOTE: When a new PCM is installed, the parameters must be reset in the IC and the PCM.
    • Disconnect all the PCM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the PCM connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS article. RESET the parameters in both the IC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset . CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation. If the concern is still present, go to  G5.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
  5. G5 CHECK FOR CORRECT IC OPERATION 
    NOTE: When a new IC is installed, the PATS keys must be programmed into the new IC.
    NOTE: When a new IC is installed, the parameters must be reset in the IC and the PCM.
    • Disconnect all the IC connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the IC connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new IC. REFER to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article. RESET the parameters in both the IC and the PCM. REFER to Passive Anti-Theft System (PATS) Parameter Reset . PROGRAM the PATS keys into the new IC. REFER to Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment . CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CYCLE the ignition. REPEAT the self-test. TEST the system for normal operation.
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