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Home >> Ford >> 2002 >> Taurus LX, 3.0 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 2479 (Exterior Lighting System) >> Diagnostic Tests >> Turn Signal and Hazard Lamps >> Pinpoint Tests >> Pinpoint Test J: The Turn Signal Lamps Are Inoperative >> Pinpoint Test J: The Turn Signal Lamps Are Inoperative

Pinpoint Test J: The Turn Signal Lamps Are Inoperative

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. J1 CHECK FOR VOLTAGE TO THE ELECTRONIC FLASHER 
    • Key in OFF position.
    • Disconnect: Electronic Flasher C2141
    • Key in ON position.
      • Fig 1: Checking For Voltage To Electronic Flasher
      GF0012873Courtesy of FORD MOTOR CO.
    • Measure the voltage between the electronic flasher C2141-2, circuit 385 (WH/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  J2.
    2. NO  : Go to  J7.
  2. J2 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking Circuit 57 (BK) For An Open
      GF0012874Courtesy of FORD MOTOR CO.
    • Measure the resistance between the electronic flasher C2141-3, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  J3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. J3 CHECK THE FLASHER OUTPUT FOR A SHORT TO VOLTAGE 
    • Key in ON position.
      • Fig 3: Checking Flasher Output For A Short To Voltage
      GF0044896Courtesy of FORD MOTOR CO.
    • Measure the voltage between the electronic flasher C2141-1, circuit 44 (LB), harness side and ground.
    • Is any voltage present? 
    1. YES  : Go to  J4.
    2. NO  : Go to  J5.
  4. J4 CHECK CIRCUIT 44 (LB) FOR A SHORT TO VOLTAGE 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202a
    • Key in ON position.
      • Fig 4: Checking Circuit 44 (LB) For A Short To Voltage
      GF0044896Courtesy of FORD MOTOR CO.
    • Measure the voltage between the electronic flasher C2141-1, circuit 44 (LB), harness side and ground.
    • Is any voltage present? 
    1. YES  : REPAIR the circuit. TEST the system for normal operation.
    2. NO  : INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
  5. J5 BYPASS THE ELECTRONIC FLASHER 
      Fig 5: Connecting Fused Jumper Wire
      GF0012875Courtesy of FORD MOTOR CO.
    • Connect a fused (20A) jumper wire between the electronic flasher C2141-2, circuit 385 (WH/RD), harness side and the electronic flasher C2141-1, circuit 44 (LB), harness side.
    • Key in ON position.
    • Place the multifunction switch in the LH or RH position.
    • Are the LH or RH turn lamps illuminated? 
    1. YES  : REMOVE the jumper wire. INSTALL a new electronic flasher. TEST the system for normal operation.
    2. NO  : LEAVE the jumper wire connected. Go to  J6.
  6. J6 CHECK CIRCUIT 44 (LB) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202a
    • Key in ON position.
      • Fig 6: Checking Circuit 44 (LB) For An Open
      GF0044897Courtesy of FORD MOTOR CO.
    • Measure the voltage between the multifunction switch C202a-1, circuit 44 (LB), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : REMOVE the jumper wire. INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
    2. NO  : REMOVE the jumper wire. REPAIR the circuit. TEST the system for normal operation.
  7. J7 CHECK CIRCUIT 8 (OG/YE) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Multifunction Switch C202a
    • Key in ON position.
      • Fig 7: Checking Circuit 8 (OG/YE) For An Open
      GF0012876Courtesy of FORD MOTOR CO.
    • Measure the voltage between the multifunction switch C202a-9, circuit 8 (OG/YE), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  J8.
    2. NO  : VERIFY the CJB fuse 7 (10A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
  8. J8 BYPASS THE MULTIFUNCTION SWITCH 
    • Key in OFF position.
      • Fig 8: Connecting Fused (20A) Jumper Wire Between Multifunction Switch C202A-9 & C202A-10, Circuit 8 (OG/YE) & 385 (WH/RD)
      GF0044898Courtesy of FORD MOTOR CO.
    • Connect a fused (20A) jumper wire between the multifunction switch C202a-9, circuit 8 (OG/YE), harness side and the multifunction switch C202a-10, circuit 385 (WH/RD), harness side.
    • Key in ON position.
      • Fig 9: Measuring Voltage Between Electronic Flasher C2141-2, Circuit 385 (WH/RD)
      GF0012873Courtesy of FORD MOTOR CO.
    • Measure the voltage between the electronic flasher C2141-2, circuit 385 (WH/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : REMOVE the jumper wire. INSTALL a new multifunction switch. REFER to STEERING COLUMN SWITCHES article. TEST the system for normal operation.
    2. NO  : REMOVE the jumper wire. REPAIR circuit 385 (WH/RD) for an open. TEST the system for normal operation.
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