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Pinpoint Test L: Unable To Activate Self-Test/Network Communication Error

WARNING: This page is about a different car, the 2023 Ford Transit-350 HD, 2023 Ford Transit-350, 2023 Ford Transit-250, and 2023 Ford Transit-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Normal Operation and Fault Conditions 

    Refer to the DTC Fault Trigger Conditions.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P0604:00 Internal Control Module Random Access Memory (RAM) Error: No Sub Type Information Sets when the PCM detects the RAM is corrupt. Reprogram or update the calibration. Check for other DTC s or drive symptoms for further action. Check for aftermarket performance products.
    PCM P0605:00 Internal Control Module Read Only Memory (ROM) Error: No Sub Type Information Sets when the PCM detects the ROM is corrupt. Reprogram the vehicle identification block. Check for other DTC s or drive symptoms for further action. Check for aftermarket performance products. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM)
    PCM P0607:00 Control Module Performance: No Sub Type Information Sets when the PCM detects the internal central processing unit (CPU) encounters an error. The PCM monitors itself and carries out internal checks of its own CPU. This DTC sets if any of these checks returns an incorrect value. Reprogram or update the calibration. Check for other DTC s and diagnose those first. Check for aftermarket performance products. Clear the DTC s, repeat the self-test.
    PCM P062F:00 Internal Control Module EEPROM Error: No Sub Type Information Sets when the PCM detects the read only memory (ROM) is corrupt. Check for other DTC s and diagnose those first. Check for aftermarket performance products. Reprogram or update the calibration. Clear the DTC s and repeat the self-test. If the DTC is retrieved again, carry out the passive PATS parameter reset. Clear the DTC s and repeat the self-test.
    PCM P0630:00 VIN Not Programmed or Incompatible - ECM/PCM: No Sub Type Information Sets when the PCM detects various VID data that is out of a specified acceptable range. The PCM did not receive a valid vehicle identification number (VIN) during reprogramming. Check for all other module DTC s or related symptoms. Diagnose all other module DTC s before diagnosing this DTC. Reprogram the BCM, instrument cluster, and PCM using as built data. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) to reprogram the PCM.
    PCM P064F:00 Unauthorized Software/Calibration Detected: No Sub Type Information Sets when the PCM detects an unauthorized calibration.
    PCM P160A:00 Control Module Vehicle Options Reconfiguration Error: No Sub Type Information Sets when the PCM detects a mismatch in configuration data and programmable parameters between the PCM and BCM. Reprogram or update the calibration. If the PCM already has the latest calibration, carry out the relearn vehicle data procedure on the scan tool. Check for other DTC s or drive symptoms for further action.
    PCM U2100:00 Initial Configuration Not Complete: No Sub Type Information Sets when the PCM detects a programming error within the vehicle identification (VID) block. Program the VID block. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . If the PCM does not allow reprogramming of the VID block, reflashing of the PCM is required.
    PCM U2101:00 Control Module Configuration Incompatible: No Sub Type Information Sets when the PCM detects the RAM is corrupt. Reprogram or update the calibration. Check for other DTC s or drive symptoms for further action. Check for aftermarket performance products. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) .
    PCM U2200:00 Control Module Configuration Memory Corrupt: No Sub Type Information Sets when the PCM detects a programming error within the vehicle identification (VID) block. Program the VID block. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . If the PCM does not allow reprogramming of the VID block, reflashing of the PCM is required.

    Possible Sources 

    • Network communication concern
    • PCM

  2. L1 CARRY OUT A VEHICLE INSPECTION AND VERIFY THE SELF-TEST PROCEDURE

    NOTE: Check for BCM DTCs. Diagnose all PCM circuit DTCs retrieved from the BCM before entering this pinpoint test. Refer to the appropriate Service Article for the BCM DTC diagnosis.

    NOTE: If the self-test or communication concern occurred after a failed or an aborted reprogram, the module may be blank. Attempt to reprogram the module again before continuing with this pinpoint test.

    • Visually inspect the following for obvious signs of electrical damage:

      • harness wiring

      • electrical connections

    Was the correct self-test procedure used? 

    Yes  GO to  L2
    No  REFER to SCAN TOOL SETUP AND FUNCTIONALITY .

  3. L2 CARRY OUT THE NETWORK TEST

    NOTE: The scan tool attempts to communicate with the PCM first. After establishing communication with the PCM, the scan tool then attempts to communicate with all modules on the vehicle.

    If a scan tool session cannot be established, the scan tool may state no communication can be established with the PCM:

    • choose No when the scan tool prompts whether or not to retry communication.
    • enter a PCM part number, tear tag or calibration number to identify the vehicle and start a session. The PCM part number and 4-character tear tag are located on the PCM.

    • Ignition ON.

    • Carry out the network test.

    Do all modules indicate pass? 

    Yes  For DTC U0212, GO to  L10. For DTC s U0140 or U0422, GO to  L9. For DTC s P0630, GO to  L7. For DTC s U0121, U0415 or U1012, GO to  L8. For DTC s P0604, P0605, P0607, P062F, P064F, P160A, P1636, U2100, U2101 or U2200, GO to  L11. For all others, REFER to QT: POWERTRAIN CONTROL MODULE (PCM) QUICK TEST .
    No  If only PCM indicates fail, GO to  L3. For network test or all other modules indicates fail, REFER to: Communications Network
    , to diagnose the PCM does not respond to the scan tool or no high speed CAN communication, all modules are not responding symptom.

  4. L3 CHECK FOR VREF VOLTAGE AT THE ETBTPS SENSOR

    • Ignition ON.

    • Disconnect Electronic Throttle Body Throttle Position Sensor electrical connector C1449.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1449 Pin 5 Harness side
      GFD785749Courtesy of FORD MOTOR COMPANY
      		 C1449 Pin 4 Harness side

    Is the voltage between 4.5 - 5.5 V? 

    Yes  REFER to: Communications Network
    , to diagnose the PCM does not respond to the scan tool or no high speed CAN communication, all modules are not responding symptom.
    No  GO to  L4

  5. L4 CHECK THE ISP-R VOLTAGE AT THE PCM

    • Ignition OFF.

    • Disconnect PCM electrical connector C1551B.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1551B Pin 13
      GFD785749Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 10.5 V? 

    Yes  GO to  L5
    No  REPAIR the open circuit. Clear the PCMDTC s. REPEAT the self-test.

  6. L5 CHECK THE PCM VPWR CIRCUITS FOR VOLTAGE

    • Ignition OFF.

    • Disconnect PCM electrical connector C1551B.

    • Connect a 5 amp fused jumper wire between the following:
      Positive Lead Measurement / Action Negative Lead
      C1551B Pin 60
      GFD785750Courtesy of FORD MOTOR COMPANY
      		 Ground

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1551B Pin 1 Harness side
      GFD785749Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 2 Harness side
      GFD785749Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 16 Harness side
      GFD785749Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the voltages greater than 10.5 V? 

    Yes  GO to  L6
    No  GO to Pinpoint Test N .

  7. L6 CHECK THE PCM GROUND CIRCUITS FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C1551B Pin 46 Harness side
      GFD785722Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 47 Harness side
      GFD785722Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 61 Harness side
      GFD785722Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 62 Harness side
      GFD785722Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 76 Harness side
      GFD785722Courtesy of FORD MOTOR COMPANY
      		 Ground
      C1551B Pin 77 Harness side
      GFD785722Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  L13
    No  REPAIR the open circuit. Clear the PCMDTC s. REPEAT the self-test.

  8. L7 CHECK FOR A TRANSMISSION CONTROL MODULE (TCM) CONCERN

    • Check for any TCMDTC s.

    • Check for other TCM related symptoms.

    Is a concern present? 

    Yes  REFER to: DTC Chart and Pinpoint Tests - 3.5L EcoBoost (235kW/320PS)
    . to continue diagnosis.
    No  For P0630, GO to  L11. For all others, GO to  L13.

  9. L8 CHECK FOR AN ANTI-LOCK BRAKE SYSTEM (ABS) MODULE CONCERN

    • Check for any ABS module DTC s.

    • Check for other ABS related symptoms.

    Is a concern present? 

    Yes  REFER to: Anti-Lock Brake System (ABS) and Stability Control
    . to continue diagnosis.
    No  Clear the PCMDTC s. REPEAT the self-test. For DTC U1012, GO to  L11. For all others, GO to  L13.

  10. L9 CHECK FOR A BODY CONTROL MODULE (BCM) CONCERN

    • Check for any BCMDTC s.

    • Check for other BCM related symptoms.

    Is a concern present? 

    Yes  REFER to: Body Control Module (BCM)
    . to continue diagnosis.
    No  GO to  L13

  11. L10 CHECK FOR A CRUISE CONTROL CONCERN

    • Check for any other PCMDTC s.

    • Check for other PCM related symptoms.

    Is a concern present? 

    Yes  REFER to: Cruise Control
    . to continue diagnosis of the cruise control system.
    No  GO to  L13

  12. L11 CHECK FOR A POWERTRAIN CONTROL MODULE (PCM) CONCERN

    • Check for any other PCMDTC s.

    Is a concern present? 

    Yes  Disregard the current DTC at this time. GO to DTC s Charts to address the next DTC.
    No  GO to  L12

  13. L12 REFLASH THE PCM

    • Clear the PCMDTC s.

    • Road test the vehicle and carry out the PCM self-test.

    Is the concern still present? 

    Yes  For DTC U1012, REPROGRAM or UPDATE the ABS Calibration. REFER to: Module Configuration - System Operation and Component Description . . Clear the PCMDTC s. REPEAT the self-test. For all others, REPROGRAM or UPDATE the TCM Calibration. REFER to: Module Configuration - System Operation and Component Description
    . Clear the PCMDTC s. REPEAT the self-test.
    No  The system is operating correctly at this time.

  14. L13 CHECK FOR CORRECT PCM OPERATION

    • Disconnect All the PCM connectors.

    • Visually inspect for:

      • pushed out pins

      • corrosion

    • Connect All the PCM connectors and make sure they seat correctly.

    • Carry out the network test and verify the concern is still present. Carry out the PCM self-test.

    Is the concern still present? 

    Yes  INSTALL a new PCM. REFER to PROGRAMMING THE VID BLOCK FOR A REPLACEMENT PCM . The system is operating correctly at this time. The concern may have been caused by a loose or corroded.
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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