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Pinpoint Test E: DTC U2197 - Invalid Vehicle Speed Data

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.
CAUTION: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. E1 CHECK THE RECORDED DTCs FROM THE TCM 
    • Check the recorded results from the TCM self-test.
    • Are any TCM DTCs recorded? 
    1. YES  : REFER to INTRODUCTION -- HYBRID ENGINES article to continue diagnosis of the vehicle speed signal.
    2. NO  : Go to  E2.
  2. E2 CHECK THE RECORDED DTCs FROM THE POWER STEERING CONTROL MODULE 
    NOTE: To clear DTCs, it is necessary to cycle the ignition switch to the OFF position for 3 seconds.
    • Check the recorded results from the power steering control module self-test.
    • Are any power steering control module DTCs recorded? 
    1. YES  : REPAIR all other power steering control module DTCs before continuing diagnosis of DTC U2197. REFER to the Power Steering Control Module Diagnostic Trouble Code (DTC) Index. CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. REPEAT the self-test.
    2. NO  : Go to  E3.
  3. E3 MONITOR THE VEHICLE SPEED SIGNAL PID IN THE TCM 
    • Enter the following diagnostic mode on the diagnostic tool: TCM PID
    • Road test the vehicle at various speeds while monitoring the vehicle speed signal PID.
    • Does the vehicle speed signal PID indicate the vehicle speed? 
    1. YES  : Go to  E4.
    2. NO  : REFER to INTRODUCTION -- HYBRID ENGINES article to continue diagnosis of the vehicle speed signal.
  4. E4 MONITOR THE VEHICLE SPEED SIGNAL PID IN THE POWER STEERING CONTROL MODULE 
    • Enter the following diagnostic mode on the diagnostic tool: Power Steering Control Module PID
    • Road test the vehicle at various speeds while monitoring the vehicle speed signal PID.
    • Does the vehicle speed signal PID indicate the vehicle speed? 
    1. YES  : CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. If DTC U2197 is retrieved again, go to  E6 .

      If no DTCs are retrieved the system is operating correctly at this time.

    2. NO  : Go to  E5.
  5. E5 CHECK THE CAN CIRCUITS BETWEEN THE POWER STEERING CONTROL MODULE AND THE DLC FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Power Steering Control Module C1463b
      • Fig 1: Checking Circuits For Open
      GF0025575Courtesy of FORD MOTOR CO.
    • Measure the resistance between:
      • power steering control module C1463a-14, circuit 1908 (WH), harness side and the DLC C251-6, circuit 1908 (WH), harness side.
      • power steering control module C1463a-16, circuit 1909 (BK), harness side and the DLC C251-14, circuit 1909 (BK), harness side.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  E6.
    2. NO  : REPAIR circuit(s) 1908 (WH) and/or 1909 (BK) for an open. CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. REPEAT the self-test. CARRY OUT the data link diagnostics test.
  6. E6 CHECK FOR CORRECT POWER STEERING CONTROL MODULE OPERATION 
    • Disconnect all the power steering control module connectors.
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect all power steering control module connectors and make sure they are seated correctly.
    • Operate the system and verify that the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new power steering control module. REFER to POWER STEERING article. CLEAR the DTCs. CYCLE the ignition switch to the OFF position for 3 seconds. REPEAT the self-test.
    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 switch to the OFF position for 3 seconds. REPEAT the self-test.
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