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Driver-Side Power Window Inoperative: Sephia

  1. Turn ignition on. Using a voltmeter, measure voltage (backprobe) between ground and Blue/Yellow wire at master power window switch while holding left front control button in UP position. If battery voltage exists, go to next step. If battery voltage does not exist, replace master power window switch. Retest system.
  2. Measure voltage (backprobe) between ground and Blue/Red wire at master power window switch while holding left front control button in DOWN position. If battery voltage exists, go to next step. If battery voltage does not exist, replace master power window switch. Retest system.
  3. Check for battery voltage at Blue/Yellow wire at left front window motor connector with left front control button in UP position. If battery voltage exists, go to next step. If battery voltage does not exist, repair open or short to ground in Blue/Yellow wire between master power window switch and left front window motor. Retest system.
  4. Check for battery voltage at Blue/Red wire at left front window motor connector with left front control button in DOWN position. If battery voltage exists, replace window motor. If battery voltage does not exist, repair open or short to ground in Blue/Red wire between master power window switch and left front window motor. Retest system.
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