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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1047 (Anti-Theft System - Pats - (Hybrid)) >> Diagnostic Tests >> Anti-Theft - Passive Anti-Theft System (PATS) >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the customer concern.
  2. Visually inspect the following for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Large metallic objects, electronic devices on the key chain that can be used to purchase gasoline or similar items, or a second ignition key on the same key ring as the passive anti-theft system (PATS) ignition key
    • Ignition lock cylinder
    • PATS key
    • Use of a non-PATS key
    • More than one PATS key on the same key ring
    • Smart junction box (SJB) fuse(s)
      • 4 (10A)
      • 5 (2A)
    • Controller area network (CAN)
    • PATS transceiver
    • Ignition switch
    • Instrument cluster
    • Powertrain control module (PCM)
    • Transmission control module (TCM)
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    4. NOTE: Make sure to use the latest scan tool software release.
  4. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
    5. NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
  5. If the scan tool does not communicate with the VCM:
    • Check the VCM connection to the vehicle.
    • Check the scan tool connection to the VCM.
    • Refer to MODULE COMMUNICATIONS NETWORK article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
  6. If the scan tool does not communicate with the vehicle:
    • Verify the ignition key is in the ON position.
    • Verify the scan tool operation with a known good vehicle.
    • Refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the powertrain control module (PCM).
  7. Carry out the network test:
    • If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
    • If the network test passes, retrieve and record the continuous memory DTCs.
  8. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB.
  9. If the DTCs retrieved are related to the concern, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
  10. If no DTCs related to the concern are retrieved, go to Symptom Chart .
POWERTRAIN CONTROL MODULE (PCM) DIAGNOSTIC TROUBLE CODE (DTC) INDEX

DTC Description Source Action
B1213 Anti-Theft Number of Programmed Keys is Below Minimum Powertrain control module (PCM) Go to Pinpoint Test A .
B1342 ECU is Faulted PCM CLEAR the DTCs. CARRY OUT the PCM self-test. If DTC B1342 is retrieved, INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - HYBRID article.
B1600 PATS Key Transponder Signal is Not Received - Non-PATS/Encrypted Key or Damaged Key PCM Go to Pinpoint Test D .
B1601 PATS Received Incorrect Key-Code From Ignition Key Transponder (Unprogrammed PATS Key) PCM Go to Pinpoint Test E .
B1602 PATS Received Invalid Format of Key-Code From Ignition Key Transponder PCM Go to Pinpoint Test F .
B1681 PATS Transceiver Module Signal is Not Received (Damaged, Not Connected, or Damaged Wiring PCM Go to Pinpoint Test G .
B2009 CAN (J1850) Invalid or Missing Data for Vehicle Security PCM/ transmission control module (TCM) Go to Pinpoint Test B .
B2103 Antenna Not Connected - Damaged PATS Transceiver PCM Go to Pinpoint Test H .
B2141 NVM Memory Failure PCM Go to Pinpoint Test C .
B2431 Key Program Failure (Defective Key or Transceiver) PCM Go to Pinpoint Test D .
U1900 CAN Communications BUS Fault PCM/TCM REFER to MULTIFUNCTION ELECTRONIC MODULES article.
U2510 Data Mismatch PCM Go to Pinpoint Test B .
EXPANDED DIAGNOSTIC TROUBLE CODES (DTC) DESCRIPTIONS

DTC Expanded Description
B1213 Less than 2 keys programmed to the PATS control. Erase the continuous codes, cycle the ignition, then carry out the self-test again. If DTC B1600, B1601, B1602 or B1681 are present, they must be corrected first. If DTC B1213 is the only self-test DTC, then cycle the second PATS key in the ignition to program.
B1600 No PATS key read by PATS control. This can be caused by the PATS key, PATS transceiver, circuits between the PATS transceiver and the PATS control and/or the PATS control
B1601 Unprogrammed PATS key. There is no issue with the PATS key itself, but the key must be programmed into the PATS memory (unless the maximum number of keys are already programmed). Refer to Spare Key Programming. No parts need to be replaced for this DTC.
B1602 Partial PATS key was read. Make sure that approved PATS key (Ford, Rotunda, or Strattec) is being used. Large metal objects, additional PATS keys, or devices used to purchase gasoline located on the customer's key ring can cause interference. Instruct the customer to keep such items from touching the ignition key during engine start. It is not necessary to remove the objects from the customer's key ring. Remote starter equipment can also cause this DTC. Remove any remote starter equipment close to the transceiver before conducting further diagnosis. This DTC can be caused by the PATS key or the PATS transceiver.
B1681 PATS transceiver signal is not received by the PATS control. This DTC can be caused by circuits between the PATS transceiver and the PATS control, the PATS transceiver or the PATS control. Follow the pinpoint test for diagnosis. This can also be caused by using the incorrect transceiver part number. Make sure that the correct transceiver part number is being used.
B2009 Indicates a communication issue between the PCM and TCM. This DTC cannot be caused by the PATS key, the PATS transceiver or the circuits between the PATS transceiver and PATS control. Whenever PATS has the DTC B2009 stored, there should be a DTC P1260, Theft Detected-Engine Disabled, stored in the TCM. Verify that DTC P1260 is stored in the TCM. If the DTC P1260 is not stored in the TCM, there is a power up issue for the PCM or the TCM. (i.e. PATS is powering up at key ON/START, but the TCM is not. Therefore, PATS tries to communicate over circuits 914 and 915 and there is no response from the PCM.) Make sure that the PCM and TCM power and ground circuits are functioning. Make sure that the scan tool can communicate with the PCM and the TCM.
B2103 Transceiver module antenna failure. Incorrect or nonexistent data from the transceiver.
B2141 NVM configuration failure. PATS does not have a stored TCM_ID in memory (PATS PID TCM_ID=not STORED). If a DTC B2009 is also present, it must be repaired first. If a DTC U1900 is also present, attempt to repair the DTC. However, repair to DTC U1900 may not be required prior to repairing DTC B2141
B2431 The ignition key was not programmed. Make sure that the correct key is being used.
U1900 Indicates a communication issue between the PATS control and some other module. Do not carry out the PATS diagnostics if a no start is not reported or if the anti-theft indicator is not flashing rapidly at key ON. If the indicator is flashing, check to make sure the PCM and TCM are powered up and operating. If the PCM or TCM is not powered up or operating, continue with PCM or TCM diagnostics.
P1260 This DTC will be stored any time the TCM disables the vehicle because of a PATS issue. Whenever the TCM has stored DTC P1260, there should be PATS DTC(s) stored that require diagnosis.
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