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Pinpoint Test D: A Single Power Window Is Inoperative - LH Rear Or RH Rear

WARNING: This page is about a different car, the 2005 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
  1. D1 CHECK THE VOLTAGE TO THE LR OR RR WINDOW CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: Inoperative Rear Window Control Switch C701/C801.
    • Key in ON position.
      • NOTE: Make certain the window lock-out switch is in the UNLOCK position.
      Fig 1: Checking The Voltage To The LR Or RR Window Control Switch
      G03999647Courtesy of FORD MOTOR CO.
    • Measure the voltage between the inoperative rear window control switch C701-3, circuit 7-AJ14 (YE/BU) (LH rear), harness side and ground or C801-3, circuit 7-AJ24 (YE) (RH rear), harness side and ground.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to  D2.
    • No  : REPAIR the circuit. TEST the system for normal operation.
  2. D2 CHECK THE GROUNDS TO THE REM 
    • Key in OFF position.
    • Disconnect: REM C420f, C420g.
    • Measure the resistance between the REM C420f-3, circuit 31-DK30 (BK/OG), harness side and ground; and between the REM C420g-2, circuit 31-DK30 (BK/OG), harness side and ground.
      Fig 2: Checking The Grounds To The REM
      G03999648Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to  D3.
    • No  : REPAIR the circuit(s) as necessary. TEST the system for normal operation.
  3. D3 CHECK CIRCUITS 8-AJ14A (WH/BU), 10-AJ14A (GY/VT), 8-AJ24 (WH) AND 10-AJ24 (GY) FOR AN OPEN 
    • Disconnect: REM C420c, C420d.
      • NOTE: If the LH rear window motor is inoperative, follow Step 2.
      If the RH rear window motor is inoperative, follow Step 3.
      Fig 3: Measuring Resistance Between LH Rear Window Control Switch C701-5, Circuit 8-AJ14A And REM C420c-24, Circuit 8-AJ14A; And Between C701-2, Circuit 10-AJ14 And REM C420c-22, circuit 10-AJ14A
      G03999649Courtesy of FORD MOTOR CO.
    • If the LH rear window motor is inoperative, measure the resistance between the LH rear window control switch C701-5, circuit 8-AJ14A (WH/BU), harness side and the REM C420c-24, circuit 8-AJ14A (WH/BU), harness side; and between the LH rear window control switch C701-2, circuit 10-AJ14 (GY/VT), harness side and the REM C420c-22, circuit 10-AJ14A (GY/VT), harness side.
    • If the RH rear window motor is inoperative, measure the resistance between the RH rear window control switch C801-5, circuit 8-AJ24 (WH), harness side and the REM C420d-7, circuit 8-AJ24 (WH), harness side and between the RH rear window control switch C801-2, circuit 10-AJ24 (GY), harness side and the REM C420-20, circuit 10-AJ24 (GY), harness side.
      Fig 4: Measuring The Resistance Between RH Rear Window Control Switch C801-5, Circuit 8-AJ24 And REM C420d-7, Circuit 8-AJ24 And Between C801-2, Circuit 10-AJ24 And REM C420-20, Circuit 10-AJ24
      G03999650Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : GO to  D4.
    • No  : REPAIR the circuit(s) as necessary. TEST the system for normal operation.
  4. D4 CHECK THE INOPERATIVE WINDOW CONTROL SWITCH 
    • Connect: REM C420c, C420d, C420f, C420g.
    • Key in ON position.
    • Connect a fused (5A) jumper wire between the inoperative window control switch C701/C801-3, circuit 7-AJ14 (YE/BU) (LH rear), harness side or circuit 7-AJ24 (YE) (RH rear), harness side and C701/C801-5, circuit 8-AJ14 (WH/BU) (LH rear), harness side or circuit 8-AJ24 (WH) (RH rear), harness side. The window motor should operate in the UP direction.
      Fig 5: Connecting Fused Jumper Wire Between Inoperative Window Control Switch C701/C801-3, Circuit 7-AJ14 Or Circuit 7-AJ24 And C701/C801-5, Circuit 8-AJ14 Or Circuit 8-AJ24
      G03999651Courtesy of FORD MOTOR CO.
    • Connect a fused (5A) jumper wire between the inoperative window control switch C701/C801-3, circuit 7-AJ14 (YE/BU) (LH rear), harness side or circuit 7-AJ24 (YE) (RH rear), harness side and C701/C801-2, circuit 10-AJ14 (GY/VT) (LH rear), harness side or circuit 10-AJ24 (GY) (RH rear), harness side. The window motor should operate in the DOWN direction.
      Fig 6: Connecting Fused Jumper Wire Between Inoperative Window Control Switch C701/C801-3, Circuit 7-AJ14 Or Circuit 7-AJ24 And C701/C801-2, Circuit 10-AJ14 Or Circuit 10-AJ24
      G03999652Courtesy of FORD MOTOR CO.
    • Does the window operate correctly? 
    • Yes  : INSTALL a new rear window control switch. REFER to WINDOW CONTROL SWITCH  in this article. TEST the system for normal operation.
    • No  : GO to  D5.
  5. D5 CHECK THE INOPERATIVE WINDOW MOTOR CIRCUITS 
    • Key in OFF position.
    • Disconnect: REM C420f, C420g.
    • Disconnect: Inoperative Window Motor C703/C803.
      • NOTE: If the LH rear window motor is inoperative, follow Step 4. If the RH rear window motor is inoperative, follow Step 5.
      Fig 7: Measuring Resistance Between LH Rear Window Motor C7031-1, Circuit 35-AJ13A And REM C420f-1, Circuit 35-AJ13; And Between C703-2, circuit 34-AJ13A and REM C420F-2, Circuit 34-AJ13
      G03999653Courtesy of FORD MOTOR CO.
    • Measure the resistance between the LH rear window motor C7031-1, circuit 35-AJ13A (VT/BU), harness side and the REM C420f-1, circuit 35-AJ13 (VT/BU), harness side; and between C703-2, circuit 34-AJ13A (BU/RD), harness side and the REM C420F-2, circuit 34-AJ13 (BU/RD), harness side.
    • Measure the resistance between the RH rear window motor C803-1, circuit 35-AJ23 (VT/WH), harness side and the REM C420g-3, circuit 35-AJ23 (VT/WH), harness side; and between C803-2, circuit 34-AJ23 (BU/OG), harness side and the REM C420g-1, circuit 34-AJ23 (BU/OG), harness side.
      Fig 8: Measuring Resistance Between RH Rear Window Motor C803-1, circuit 35-AJ23 And The REM C420g-3, Circuit 35-AJ23; And Between C803-2, Circuit 34-AJ23 And REM C420g-1, Circuit 34-AJ23
      G03999654Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : INSTALL a new window motor. REFER to REAR DOOR WINDOW GLASS  in this article.
    • No  : REPAIR the circuit(s) as necessary. TEST the system for normal operation.
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