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Pinpoint Test D: Pressure Control (Pc) Solenoids (PCA, PCB, PCC)

WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the Transmission Vehicle Harness Connector illustration preceding these pinpoint tests.
NOTE: Read and record all DTCs. All digital TR Sensor and VSS DTCs must be repaired before entering Output State Control (OSC).
  1. D1 ELECTRONIC DIAGNOSTICS 
    • Key in OFF position.
    • Select PARK.
    • Check to make sure the transmission harness connector is fully seated, terminals are fully engaged in the connector and in good condition before proceeding.
    • Install 300 psi pressure gauges into Line and PC C tap.
    • Connect the diagnostic tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool:
    • Diagnostic Data Link.
    • Enter the following diagnostic mode on the diagnostic tool: PCM.
    • Enter the following diagnostic mode on the diagnostic tool: Active Command Modes.
    • Enter the following diagnostic mode on the diagnostic tool: Output State Control (OSC).
    • Enter the following diagnostic mode on the diagnostic tool: Trans-Bench Mode.
    • Does the vehicle enter the Trans-Bench Mode? 
      1. Yes  : REMAIN in Trans-Bench Mode.

        GO to D2.

      2. No  : REPEAT procedure to enter Trans-Bench Mode. If vehicle did not enter OSC, REFER to INTRODUCTION for diagnosis of PCM or NGS.
  2. D2 SOLENOID FUNCTIONAL TEST 
    • Monitor pressure gauges.
    • Enter the following diagnostic mode on the diagnostic tool: Parameter; PCx.
      • NOTE: Make sure that the solenoids not being tested are off or at zero.
    • Select PC A, PC B, or PC C.
    • Select value - 15, 30, 45, 60, 70 or 90 psi.
    • Press "SEND".
    • Select another value "0-90 psi".
    • Press "SEND".
    • Enter the following diagnostic mode on the diagnostic tool: XXX.
    • Press "SEND".
    • For PC A and PC B: Does the pressure reading for A or B follow the commanded pressure, (actual A and B pressures will be higher than the commanded pressure)? For PC C: Does the pressure reading match the commanded pressure?" 
      1. Yes  : CLEAR DTCs.
      2. No  : GO to D3.
  3. D3 CHECK FOR BATTERY VOLTAGE 
    • Disconnect: Transmission Harness Connector.
    • Visually inspect all wires and connectors for damage.
    • Key in ON position.
    • Measure the voltage between pin 3 harness side and ground.
      Fig 1: Measuring Voltage Between Pin 3 Harness Side And Ground
      G03201610Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      1. Yes  : GO to D4.
      2. No  : REPAIR the circuit. TEST the system for normal operation.
  4. D4 ELECTRICAL SIGNAL CHECK 
    • Leave positive lead connected pin 3 and connect negative lead to pins 1, 4 and 11 harness side.
      Fig 2: Connecting Positive Lead To Pin 3 And Negative Lead To Pins 1, 4 And 11 Harness Side
      G03201611Courtesy of FORD MOTOR CO.
    • Activate solenoids (ON and OFF) while monitoring the voltage reading.
    • Enter the following diagnostic mode on the diagnostic tool: Trans-Bench Mode.
    • Enter the following diagnostic mode on the diagnostic tool: Parameter; PCx.
    • Select a value "0-90 psi".
    • Press "SEND".
    • Select another value "0-90 psi".
    • Press "SEND".
    • Enter the following diagnostic mode on the diagnostic tool: XXX.
    • Press "SEND".
    • Does the voltage and solenoid state change? 
      1. Yes  : GO to D5.
      2. No  : CHECK for open or short circuit in harness or PCM.
  5. D5 CHECK SOLENOID RESISTANCE AT SOLENOID 
    • Measure and record the resistance between PC solenoid pin 3 and pins 1, 4, and 11. Resistance should be between 3.3 and 7.5 ohms.
      Fig 3: Measuring Resistance Between PC Solenoid Pin 3 And Pins 1, 4, And 11
      G03201612Courtesy of FORD MOTOR CO.
    • Is the resistance within specifications? 
    1. Yes  : GO to D6.
    2. No  : INSTALL a new solenoid body assembly.
  6. D6 CHECK SOLENOID FOR SHORT TO GROUND 
    • Measure and record the resistance between the PC solenoid pins 1, 4, 11, and ground solenoid side.
      Fig 4: Measuring Resistance Between PC Solenoid Pins 1, 4, 11, And Ground Solenoid Side
      G03201613Courtesy of FORD MOTOR CO.
    • Is the resistance less than 10,000 ohms? 
      1. Yes  : INSTALL a new solenoid body assembly. TEST the system for normal operation.
      2. No  : REFER to DIAGNOSIS BY SYMPTOM  in this section for diagnosis of pressure concerns. TEST the system for normal operation.
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