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Driver Seat Recliner Movement Inoperative

  1. Using DVOM, select BODY, MEMORY SEAT MODULE then ACTUATORS. Actuate RECLINER MOTOR up and down using scan tool. If driver's seatback moves up and down, go to next step. If driver's seatback does not move up and down, go to step  6.
  2. Turn ignition off. Disconnect Memory Seat Module (MSM) connector C1. See Figure. MSM is located under driver's seat. Disconnect driver's power seat switch connector. Using DVOM, measure resistance of Gray/White wire between driver's power seat switch connector terminal No. 4 and MSM connector C1 terminal No. 11. See Figure and Figure . If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open in Gray/White wire. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  3. Using DVOM, measure resistance of Gray/Light Blue wire between driver's power seat switch connector terminal No. 2 and MSM connector C1 terminal No. 4. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open in Gray/Light Blue wire. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  4. Reconnect driver's power seat switch connector. Connect test light between MSM connector C1 terminals No. 4 (Gray/Light Blue wire) and No. 11 (Gray/White wire). Move recliner up and down using switch. If test light illuminates when switch is operated in both directions, go to next step. If test light does not illuminate when switch is operated in both directions, replace driver's power seat switch. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  5. Replace MSM. See MEMORY HEATED SEAT MODULE, HEATED SEAT MODULE, MEMORY SEAT MODULE  under REMOVAL & INSTALLATION. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  6. Turn ignition off. Disconnect Memory Seat Module (MSM) connector C2. See Figure. MSM is located under driver's seat. Disconnect driver's power seat recliner motor 2-pin connector. Using DVOM, measure resistance of Gray/White wire between MSM connector C2 terminal No. 18 and driver's power seat rear riser motor connector terminal "A". See Figure. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open in Gray/White wire. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  7. Using DVOM, measure resistance of Gray/Light Blue wire between MSM connector C2 terminal No. 19 and driver's power seat recliner motor connector terminal "B". See Figure. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair open in Gray/Light Blue wire. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  8. Reconnect driver's power seat recliner motor 2-pin connector. Connect a fused jumper between MSM connector C2 terminals No. 18 (Gray/White wire) and No. 12 (Black wire). Connect a second fused jumper between MSM connector C2 terminals No. 19 (Gray/Light Blue wire) and momentarily to No. 1 (Red wire). Switch jumper wires between MSM connector C2 terminals No. 12 (Black wire) and No. 1 (Red wire). If driver's seatback moves up and down when fused jumpers are connected, go to next step. If driver's seatback does not move up and down when fused jumpers are connected, replace seat track assembly. See appropriate POWER SEATS article. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
  9. Replace Memory Seat Module (MSM). See MEMORY HEATED SEAT MODULE, HEATED SEAT MODULE, MEMORY SEAT MODULE  under REMOVAL & INSTALLATION. Perform MEMORY/HEATED SEATS VERIFICATION TEST  under VERIFICATION TESTS.
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