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Heated Seat Switch Test: Notes

  1. Turn ignition switch to OFF position. Disconnect negative battery cable. Remove heated seat switches from center console. See HEATED SEAT SWITCH  under REMOVAL & INSTALLATION. Disconnect heated seat switch harness connectors. Check continuity between ground and terminal No. 3 (Black wire) at suspect heated seat switch harness connector. See Figure. If continuity exists, go to next step. If continuity does not exist, repair open in Black wire between suspect heated seat switch and ground point. Ground point is located under passenger's front seat, for both seats.
  2. Connect negative battery cable. Turn ignition switch to ON position. Using DVOM, check battery voltage between ground and terminal No. 4 (Yellow/Dark Green wire) at suspect heated seat switch harness connector. If battery voltage exists, turn ignition switch to OFF position, disconnect negative battery cable and go to next step. If battery voltage does not exist, repair open in Yellow/Dark Green wire between suspect heated seat switch and junction block. See WIRING DIAGRAMS .
  3. Place suspect heated seat switch in neutral position. Using DVOM, measure resistance of Yellow/Dark Green wire between terminal No. 4 at suspect heated seat switch harness connector and terminal No. 6 (component side) at suspect heated seat switch. Resistance should be 2.2 k/ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace suspect heated seat switch.
  4. Place suspect heated seat switch in LO position. Using DVOM, measure resistance of Yellow/Dark Green wire between terminal No. 4 at suspect heated seat switch harness connector and terminal No. 6 (component side) at suspect heated seat switch. Resistance should be 414 ohms. If resistance is as specified, go to next step. If resistance is not as specified, replace suspect heated seat switch. See HEATED SEAT SWITCH  under REMOVAL & INSTALLATION.
  5. Place suspect heated seat switch in HI position. Using DVOM, measure resistance of Yellow/Dark Green wire between terminal No. 4 at suspect heated seat switch harness connector and terminal No. 6 (component side) at suspect heated seat switch. Resistance should be 32.5 ohms. If resistance is as specified, repair heated seat relay concern. Perform HEATED SEAT RELAY TEST . If resistance is not as specified, replace suspect heated seat switch.
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