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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1149 (Automatic Transmission - Cd4E) >> Diagnostic Tests >> Pinpoint Tests - Non OSC Equipped Vehicle >> Pinpoint Tests >> Pinpoint Test A: Shift Solenoids

Pinpoint Test A: Shift Solenoids

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to the Transaxle Vehicle Harness Connector illustration preceding these pinpoint tests.
  1. A1 CHECK FOR BATTERY VOLTAGE AT THE TRANSAXLE CONNECTOR 
    CAUTION: Do not pry on the connector. This will damage the connector and may result in a transaxle concern. Press button and pull up on the transaxle vehicle harness connector.
    • Disconnect: Transaxle Connector C199
    • Inspect the transaxle vehicle harness connector for damage. Make sure the pins are fully engaged and in good condition before proceeding.
    • Key in ON position.
    • Measure the voltage at transaxle connector C199-9, circuit CBB24 (VT/GN).
      • Fig 1: Measuring Voltage
      GF0042331Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A4.
    2. NO  : Go to  A2.
  2. A2 CHECK BATTERY CONTROL MODULE (BCM) FUSE 24 (10A) 
    • Check fuse: BCM Fuse 24 (10A)
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A3.
    2. NO  : REPAIR circuit CBB24 (VT/GN) or circuit CBB28 (GY/VT) for a short to ground. CONNECT all electrical connectors. TEST the system for normal operation.
  3. A3 CHECK THE SOLENOID POWER SUPPLY CIRCUIT FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: BCM fuse 24 (10A)
    • Measure the resistance between the output side of BCM fuse 24 (10A) or circuit CBB28 (GY/VT) and transaxle connectorC199-9, circuit CBB24 (VT/GN).
      • Fig 2: Measuring Resistance
      GF0042332Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Circuit CBB24 (VT/GN) or circuit CBB28 (GY/VT) has an intermittent open circuit. REPEAT this test step while wiggling the wiring harness. INSPECT the vehicle wiring harness for damage and repair as necessary.
    2. NO  : REPAIR circuit CBB24 (VT/GN) or circuit CBB28 (GY/VT) for an open. CONNECT all electrical connectors. TEST the system for normal operation.
  4. A4 CHECK SOLENOID CONTROL CIRCUIT FOR A SHORT TO POWER AND GROUND 
    • Disconnect: PCM Connector C175T
    • Inspect the PCM connector for damage. Make sure the pins are fully engaged and in good condition before proceeding.
      NOTE: Use the table to determine which pin on PCM connector C175T is the SSA or SSB solenoid control circuit.
    • Measure the resistance at PCM connector C175T between the shift solenoid pin and ground and transaxle connector C199-9, circuit CBB24 (VT/GN).
      Shift Solenoid Control Circuit PCM Connector Pin
      SSA CET18 (GY/YE) 42
      SSB CET19 (VT/GY) 43
      • Fig 3: Measuring Resistance
      GF0042333Courtesy of FORD MOTOR CO.
    • Is each resistance greater than 10,000 ohms? 
    1. YES  : Go to  A5.
    2. NO  : REPAIR short circuit(s). CONNECT all components. TEST the system for normal operation.
  5. A5 CHECK THE SOLENOID CONTROL CIRCUIT FOR AN OPEN 
    NOTE: Use the table to determine which pin on PCM connector C175T and transaxle connector C199 is the SSA or SSB solenoid control circuit.
    • Measure the resistance at PCM connector C175T between the shift solenoid pin and the corresponding pin on transaxle connector C199.
      Shift Solenoid Transaxle Connector Pin PCM Connector Pin
      SSA CET18 (GY/YE) 7 42
      SSB CET19 (VT/GY) 5 43
      • Fig 4: Measuring Resistance
      GF0042334Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A6.
    2. NO  : REPAIR the open circuit(s). CONNECT all components. TEST the system for normal operation.
  6. A6 CHECK THE RESISTANCE OF THE SOLENOID FIELD CIRCUIT 
    • Measure the resistance between transaxle connector pin 6, and pin 7 for SSA or pin 5 and pin 6 for SSB, component side
      • Fig 5: Measuring Resistance
      GF0042335Courtesy of FORD MOTOR CO.
    • Is the resistance between 12 and 22 ohms? 
    1. YES  : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - 2.3L article or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) article. RECONNECT all components. TEST the system for normal operation. If symptoms are still present, REFER to Diagnosis By Symptom .
    2. NO  : INSTALL a new main control assembly. REFER toMain Control Valve Body . CONNECT all components. TEST the system for normal operation.
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