LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1453 (Automatic Transmission - Automatic Transaxle/Transmission - External Controls) >> Diagnostic Tests >> External Controls >> Pinpoint Tests

Pinpoint Tests

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Transmission Controls for schematic and connector information.

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Shift Interlock for schematic and connector information.

PINPOINT TEST A: THE Brake Shift Interlock Actuator (BSIA) SYSTEM DOES NOT RELEASE/LOCK CORRECTLY 

  1. A1 CHECK THE BRAKE LIGHTS 
    • Apply the brake pedal and view the brake lights.
    • Do all the brake lights illuminate? 
    1. YES  : Go to  A2.
    2. NO  : REFER to EXTERIOR LIGHTING article.
  2. A2 CHECK CIRCUIT 810 (RD/LG) FOR A SHORT TO GROUND 
    • Disconnect: Lighting Control Module (LCM) C2145A
    • Disconnect: Brake Shift Interlock Actuator (BSIA) C2008
      • Fig 1: Checking Circuit For Short To Ground
      GF0018774Courtesy of FORD MOTOR CO.
    • Measure the resistance between BSIA C2008, circuit 810 (RD/LG), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  A3.
    2. NO  : REPAIR circuit 810 (RD/LG) for a short to ground. RECONNECT all components. TEST the system for normal operation.
  3. A3 CHECK CIRCUIT 810 (RD/LG) FOR AN OPEN 
      Fig 2: Checking Circuit For An Open
      GF0018781Courtesy of FORD MOTOR CO.
    • Measure the resistance between BSIA C2008-2, circuit 810 (RD/LG), harness side and LCM C2145A-6, circuit 810 (RD/LG), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A4.
    2. NO  : REPAIR circuit 810 (RD/LG) for an open. RECONNECT all components. TEST the system for normal operation.
  4. A4 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
      Fig 3: Measuring Resistance
      GF0047589Courtesy of FORD MOTOR CO.
    • Measure the resistance between BSIA C2008-1, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A5.
    2. NO  : REPAIR circuit 57 (BK) for an open. RECONNECT all components. TEST the system for normal operation.
  5. A5 CHECK THE LCM 
    • Connect: LCM C2145B
    • Key in ON position.
      • Fig 4: Checking Circuit For Voltage
      GF0018783Courtesy of FORD MOTOR CO.
    • Measure the voltage at BSIA C2008-2, circuit 810 (RD/LG), harness side while applying the brake pedal.
    • Is the voltage greater than 10 volts while applying the brake pedal? 
    1. YES  : INSTALL a new BSIA. REFER to Brake Shift Interlock Actuator . RECONNECT all components. TEST the system for normal operation.
    2. NO  : INSTALL a new LCM. REFER to MULTIFUNCTION ELECTRONIC MODULES article. RECONNECT all components. TEST the system for normal operation.

PINPOINT TEST B: THE SELECTOR LEVER IS OUT OF CORRECT GEAR RELATIONSHIP 

  1. B1 CHECK THE SELECTOR LEVER COMPONENTS FOR DAMAGE 
    • Gain access to the selector lever components.
    • Key in ACCESSORY position.
    • Apply the brake pedal.
    • Observe all selector lever components while moving the selector lever through all ranges.
    • Are any of the components damaged? 
    1. YES  : REPAIR as necessary. REINSTALL all components. TEST the system for normal operation.
    2. NO  : Go to  B2.
  2. B2 CHECK THE SELECTOR LEVER CABLE AND BRACKET INSTALLATION 
    • Check to make sure the selector lever cable and bracket installation is correct. Refer to Selector Lever Cable and Bracket .
    • Is the selector lever cable and bracket installed correctly? 
    1. YES  : Go to  B3.
    2. NO  : REINSTALL the selector lever cable. Go to  B3.
  3. B3 CHECK THE SELECTOR LEVER CABLE ADJUSTMENT 
    • Check to make sure the selector lever cable adjustment is correct. Refer to Selector Lever Cable Adjustment .
    • Is the selector lever cable adjusted correctly? 
    1. YES  : Go to  B4.
    2. NO  : ADJUST the selector lever cable. Go to  B4.
  4. B4 CHECK THE SELECTOR LEVER INDICATOR ADJUSTMENT 
    1. YES  : Go to  B5.
    2. NO  : ADJUST the selector lever indicator. Go to  B5.
  5. B5 CHECK THE Transmission Range (TR) SENSOR ADJUSTMENT 
    • Check to make sure the TR sensor adjustment is correct. Refer to GENERAL PROCEDURES article.
    • Is the TR sensor adjusted correctly? 
    1. YES  : REFER to IN-VEHICLE SERVICING article for internal transmission repair.
    2. NO  : ADJUST the TR sensor. TEST the system for normal operation. If the condition returns, REFER to IN-VEHICLE SERVICING article for internal transmission repair.

PINPOINT TEST C: THE SELECTOR LEVER LINKAGE IS BINDING OR WILL NOT MOVE 

  1. C1 CHECK THE SELECTOR LEVER COMPONENTS FOR DAMAGE 
    • Gain access to the selector lever components.
    • Key in ACCESSORY position.
    • Apply the brake pedal.
    • Observe all selector lever components while attempting to move the selector lever through all ranges.
    • Are any of the components damaged? 
    1. YES  : REPAIR as necessary. REINSTALL all components. TEST the system for normal operation.
    2. NO  : Go to  C2.
  2. C2 CHECK THE SELECTOR LEVER COMPONENT OPERATION WITH THE SELECTOR LEVER CABLE DISCONNECTED FROM THE TRANSMISSION 
    • Key in OFF position.
    • With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING & LIFTING article.
    • Disconnect the selector lever cable from the manual control lever.
    • Lower the vehicle.
    • Key in ACCESSORY position.
    • Apply the brake pedal.
    • Observe the selector lever components while attempting to move the selector lever through all ranges.
    • Do the components move in a fluid motion through all ranges? 
    1. YES  : REFER to IN-VEHICLE SERVICING article for internal transmission repair.
    2. NO  : Go to  C3.
  3. C3 CHECK THE SELECTOR LEVER COMPONENT OPERATION WITH THE SELECTOR LEVER CABLE DISCONNECTED FROM THE STEERING COLUMN 
    • Key in OFF position.
    • Disconnect the selector lever cable from the selector lever arm and support.
    • Key in ACCESSORY position.
    • Apply the brake pedal.
    • Observe the selector lever components while attempting to move the selector lever through all ranges.
    • Do the components move without restriction through all ranges? 
    1. YES  : INSTALL a new selector lever cable and bracket. REFER to Selector Lever Cable and Bracket . TEST the system for normal operation.
    2. NO  : REFER to STEERING COLUMN article for steering column repair.

PINPOINT TEST D: THE Transmission Control Switch (TCS) DOES NOT OPERATE CORRECTLY 

  1. D1 CHECK FUSE 8 (10A) 
    • Key in OFF position.
    • Check fuse: Central Junction Box (CJB) Fuse 8 (10A)
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D2.
    2. NO  : REPAIR circuit 640 (RD/YE) for a short to ground.
  2. D2 CHECK CIRCUIT 640 (RD/YE) FOR AN OPEN 
    • Disconnect: CJB Fuse 8 (10A)
    • Disconnect: Transmission Control Switch (TCS) C279
      • Fig 5: Checking Circuit For An Open
      GF0018785Courtesy of FORD MOTOR CO.
    • Measure the resistance between the output side of fuse 8 (10A), circuit 640 (RD/YE) and TCS C279-1, circuit 640 (RD/YE).
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  D3.
    2. NO  : REPAIR circuit 640 (RD/YE) for an open. RECONNECT all components. TEST the system for normal operation.
  3. D3 CHECK THE TCS 
      Fig 6: Measuring Resistance
      GF0047590Courtesy of FORD MOTOR CO.
    • Measure the resistance between TCS C279-1 and C279-2 while cycling the TCS.
    • Does the resistance change from less than 5 ohms to greater than 10,000 ohms? 
    1. YES  : Go to  D4.
    2. NO  : INSTALL a new selector lever. REFER to Selector Lever . RECONNECT all components. TEST the system for normal operation.
  4. D4 CHECK CIRCUIT 224 (TN/WH) FOR A SHORT TO GROUND 
    • Disconnect: PCM C175B
      • Fig 7: Measuring Resistance
      GF0047591Courtesy of FORD MOTOR CO.
    • Measure the resistance between TCS C279-2, circuit 224 (TN/WH) and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  D5
    2. NO  : REPAIR circuit 224 (TN/WH) for a short to ground. RECONNECT all components. TEST the system for normal operation.
  5. D5 CHECK CIRCUIT 224 (TN/WH) FOR AN OPEN 
      Fig 8: Measuring Resistance
      GF0047592Courtesy of FORD MOTOR CO.
    • Measure the resistance between TCS C279-2, circuit 224 (TN/WH) and PCM C175B-29, circuit 224 (TN/WH).
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new PCM. RECONNECT all components. TEST the system for normal operation.
    2. NO  : REPAIR circuit 224 (TN/WH) for an open. RECONNECT all components. TEST the system for normal operation.
scientia non olet · About LEMON Manuals