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Home >> Ford >> 2011 >> Fiesta SEL, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - Automatic Shifting Manual Transmission/Transaxle) >> Diagnosis And Testing >> Pinpoint Tests >> Pinpoint Tests >> Pinpoint Test A: Clutch Motors

Pinpoint Test A: Clutch Motors

WARNING: This page is about a different variant/trim than selected.
NOTE: Refer to the transaxle connector illustrations TRANSAXLE CONNECTOR LAYOUTS  in this information.
  1. A1 TEST BJB FUSE 2 (50A) 
    • Check fuse: Battery Junction Box (BJB) fuse 2 (50A).
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to A2  .
    • No:  REPAIR circuit SBB02 (YE/RD) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
  2. A2 TEST BJB FUSE 27 (7.5A) 
    • Check fuse: BJB  fuse 27 (7.5A).
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to A3  . No:  REPAIR circuit SBB27 (BU/RD) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
  3. A3 TEST CJB FUSE 23 (10A) 
    • Check fuse: Central Junction Box (CJB) fuse 23 (10A).
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to A4  . No:  REPAIR circuit CBP23 (BN/YE) for a short to ground. INSTALL a new fuse. TEST the system for normal operation.
  4. A4 CHECK FOR VOLTAGE AT THE TCM CONNECTOR 
    • Ignition OFF.
    • Disconnect: Transmission Control Module (TCM) C1750A.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Measure the voltage between TCM  C1750A-1, circuit SBB02 (YE/RD) harness side and ground.
      Fig 1: Checking For Voltage At TCM Connector
      G06939230Courtesy of FORD MOTOR CO.
    • Measure the voltage between TCM  C1750A-2, circuit SBB02 (YE/RD) harness side and ground.
      Fig 2: Measuring Voltage Between Selected TCM Connector Terminal & Ground
      G06939231Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  Go to A5  .
    • No:  REPAIR circuit SBB02 (YE/RD) for an open. RECONNECT all components. TEST the system for normal operation.
  5. A5 CHECK FOR KAM  VOLTAGE AT THE TCM CONNECTOR 
    • Measure the voltage between TCM  C1750A-18, circuit SBB27 (BU/RD) harness side and ground.
      Fig 3: Checking For KAM Voltage At TCM Connector
      G06939232Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  Go to A6  .
    • No:  REPAIR circuit SBB27 (BU/RD) for an open. RECONNECT all components. TEST the system for normal operation.
  6. A6 CHECK FOR IGNITION POWER AT THE TCM CONNECTOR 
    • Ignition ON.
    • Measure the voltage between TCM  C1750A-31, circuit CBP23 (BN/YE) harness side and ground.
      Fig 4: Measuring Voltage Between TCM & Ground
      G06939233Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  Go to A7  .
    • No:  REPAIR circuit CBP23 (BN/YE) for an open. RECONNECT all components. TEST the system for normal operation.
  7. A7 CHECK THE TRANSAXLE WIRING HARNESS FOR AN OPEN CIRCUIT 
    • Ignition OFF.
    • Disconnect: TCM  C1750B.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Disconnect: Clutch Motor 1 C1633.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • Disconnect: Clutch Motor 2 C1634.
    • Inspect both ends of the connector for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.
    • If diagnosing a clutch motor 1 concern, measure the resistance between TCM  C1750B, harness side and clutch motor 1 C1633, using the following chart.
      RESISTANCE REFERENCE CHART

      TCM Clutch Motor 1
      C1750B-58 C1633-1
      C1750B-19 C1633-2
      C1750B-45 C1633-3
      C1750B-32 C1633-4
      C1750B-57 C1633-5
      C1750B-6 C1633-6
      C1750B-4 C1633-7
      C1750B-5 C1633-8
    • If diagnosing a clutch motor 2 concern, measure the resistance between TCM  C1750B, harness side and clutch motor 2 C1634, using the following chart.
      RESISTANCE REFERENCE CHART

      TCM Clutch Motor 2
      C1750B-55 C1634-1
      C1750B-42 C1634-2
      C1750B-44 C1634-3
      C1750B-43 C1634-4
      C1750B-56 C1634-5
      C1750B-2 C1634-6
      C1750B-1 C1634-7
      C1750B-3 C1634-8
    • Is the resistance less than 5 ohms? 
    • Yes:  Go to A8  .
    • No:  REPAIR the circuit(s) for an open. RECONNECT all components. TEST the system for normal operation.
  8. A8 CHECK THE TRANSAXLE WIRING HARNESS FOR A SHORT TO GROUND 
    • If diagnosing a clutch motor 1 concern, measure the resistance between TCM  C1750B, harness side and ground using the following chart.
      RESISTANCE REFERENCE CHART

      TCM Ground
      C1750B-58 Ground
      C1750B-19 Ground
      C1750B-45 Ground
      C1750B-32 Ground
      C1750B-57 Ground
      C1750B-6 Ground
      C1750B-4 Ground
      C1750B-5 Ground
    • If diagnosing a clutch motor 2 concern, measure the resistance between TCM  C1750B, harness side and ground using the following chart.
      RESISTANCE REFERENCE CHART

      TCM Ground
      C1750B-55 Ground
      C1750B-42 Ground
      C1750B-44 Ground
      C1750B-43 Ground
      C1750B-56 Ground
      C1750B-2 Ground
      C1750B-1 Ground
      C1750B-3 Ground
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  Inspect the transaxle wiring harness for signs of physical damage and repair or install a new transaxle wiring harness as necessary. TEST the system for normal operation. If the transaxle wiring harness is not damaged, Go to A9  .
    • No:  REPAIR the circuit(s) for a short to ground. RECONNECT all components. TEST the system for normal operation.
  9. A9 CHECK THE CLUTCH MOTOR 
    • Remove both clutch motors. Install clutch motor 1 in the original clutch motor 2 location and install clutch motor 2 in the original clutch motor 1 location. RECONNECT all components. Clear the DTC's and TEST the system for normal operation.
    • Does the TCM set the same DTC? 
    • Yes:  INSTALL a new TCM  .
    • No:  INSTALL a new clutch motor. TEST the system for normal operation.
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