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Test E: No Horizontal Movement

CAUTION: On models equipped with side air bags, a Side Air Bag Simulator (418-133) must be connected to side air bag and seat belt pretensioner floor connectors before diagnosing or repairing power seats.
NOTE: Prior to disconnecting battery, raise seat to highest position, then move and tilt seat to most forward position.
  1. Turn ignition switch to LOCK position. On models equipped with side air bags, deactivate system before diagnosing. See appropriate AIR BAG RESTRAINT SYSTEMS article. Ensure to disconnect any auxiliary power supplies. Disconnect suspect horizontal motor 2-pin harness connector, located under appropriate seat on motor assembly. Measure resistance between ground and horizontal motor harness connector Red/White wire terminal. Measure resistance between ground and horizontal motor harness connector Yellow/White wire terminal. If either resistance is 5 ohms or more for driver's seat, go to next step. If either resistance is 5 ohms or more for passenger's seat, go to step  3 . If both resistances are less than 5 ohms, go to step  4 .
  2. Disconnect driver's seat control switch 8-pin harness connector, located on left side of driver's seat. Measure resistance of Red/White wire between horizontal motor harness connector terminal and driver's seat control switch harness connector terminal "F". See Figure . Measure resistance of Yellow/White wire between horizontal motor harness connector terminal and driver's seat control switch harness connector "G". If both resistances are less than 5 ohms, replace seat control switch. See SEAT CONTROL SWITCH  under REMOVAL & INSTALLATION. If either resistance is 5 ohms or more, repair open in Red/White wire or Yellow/White wire. See WIRING DIAGRAMS  .
  3. Disconnect passenger's seat control switch 8-pin harness connector, located under passenger's seat. Measure resistance of Red/White wire between horizontal motor harness connector terminal and passenger's seat control switch harness connector terminal "G". See Figure . Measure resistance of Yellow/White wire between horizontal motor harness connector terminal and passenger's seat control switch harness connector terminal "F". If both resistances are less than 5 ohms, replace seat control switch. See SEAT CONTROL SWITCH  under REMOVAL & INSTALLATION. If either resistance is 5 ohms or more, repair open in Red/White wire or Yellow/White wire. See WIRING DIAGRAMS  .
  4. Turn ignition switch to RUN position. Measure voltage between ground and suspect horizontal motor harness connector Red/White wire terminal. Actuate suspect seat control switch to REARWARD position. If voltage is 10 volts or more, go to next step. If voltage is less than 10 volts, replace seat control switch. See SEAT CONTROL SWITCH  under REMOVAL & INSTALLATION.
  5. Measure voltage between ground and suspect horizontal motor harness connector Yellow/White wire terminal. Actuate suspect seat control switch to FORWARD position. If voltage is 10 volts or more, replace seat track/motor assembly. See SEAT TRACK/MOTOR ASSEMBLY  under REMOVAL & INSTALLATION. If voltage is less than 10 volts, replace seat control switch. See SEAT CONTROL SWITCH  under REMOVAL & INSTALLATION.
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