Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2006MARINER 4WD V6-3.0L VIN 1REPAIR AND DIAGNOSISBODY AND FRAMESEATSTESTING AND INSPECTIONPINPOINT TESTSTEST E: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY
2006 Mercury Mariner 4WD V6-3.0L VIN 1
Test E: The Power Seat Does Not Move Horizontally/Vertically
2006 Mercury Mariner 4WD V6-3.0L VIN 1SECTION Test E: The Power Seat Does Not Move Horizontally/Vertically
PINPOINT TEST E: THE POWER SEAT DOES NOT MOVE HORIZONTALLY/VERTICALLY
Normal Operation
The seat control switch is powered by battery voltage on circuit 171 (BK/WH) and is grounded by circuit 57 (BK). When pressed in one of the 6 available directions, the seat control switch supplies voltage to the desired seat motor on the desired direction circuit. The seat control switch is normally closed to ground on all 6 of the seat motor circuits, so if one circuit becomes closed to power, the circuit on the opposite side of the same motor is still closed to ground. The seat motor will then operate, moving the seat track in the desired direction. Moving the seat control switch in the opposite direction reverses polarity to the seat motor, which causes the seat motor to move the seat track in the opposite direction. There are 3 seat motors integrated to the seat track assembly: 1 to move the seat horizontally (forward/rearward), 1 for front vertical (up/down) operation and 1 for rear vertical (up/down) operation.
Possible Causes
- Circuit 1469 (RD/LB) open
- Circuit 1470 (YE/LB) open
- Circuit 1471 (RD/WH) open
- Circuit 1472 (YE/WH) open
- Circuit 1473 (YE/LG) open
- Circuit 1474 (RD/LG) open
- Seat control switch
- Seat track motor and transmission assembly
E1-E3:
E4-E5:
E6-E8:
E8-E9:
E10-E11:
E12-E13:
E14:
Normal Operation
The seat control switch is powered by battery voltage on circuit 171 (BK/WH) and is grounded by circuit 57 (BK). When pressed in one of the 6 available directions, the seat control switch supplies voltage to the desired seat motor on the desired direction circuit. The seat control switch is normally closed to ground on all 6 of the seat motor circuits, so if one circuit becomes closed to power, the circuit on the opposite side of the same motor is still closed to ground. The seat motor will then operate, moving the seat track in the desired direction. Moving the seat control switch in the opposite direction reverses polarity to the seat motor, which causes the seat motor to move the seat track in the opposite direction. There are 3 seat motors integrated to the seat track assembly: 1 to move the seat horizontally (forward/rearward), 1 for front vertical (up/down) operation and 1 for rear vertical (up/down) operation.
Possible Causes
- Circuit 1469 (RD/LB) open
- Circuit 1470 (YE/LB) open
- Circuit 1471 (RD/WH) open
- Circuit 1472 (YE/WH) open
- Circuit 1473 (YE/LG) open
- Circuit 1474 (RD/LG) open
- Seat control switch
- Seat track motor and transmission assembly
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.