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SEAT HEAT INTERFACE MODULE Before testing the seat heat interface module, test the heated seat switch, the heated seat elements, and (1) Replace the seat heat interface module with a known good unit and test the operation of the heated (2) Test each of the circuits from the heated seat switch, heated seat relay, heated seat elements, and REMOVAL AND INSTALLATION HEATED SEAT SWITCH WARNING: ON VEHICLES EQUIPPED WITH AIR- REFER TO GROUP 8M - PASSIVE RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR (1) Disconnect and isolate the battery negative cable. (2) Using a trim stick or another suitable wide flat-bladed tool, gently pry around the perimeter (3) Pull the switch assembly out from the console far enough to access and unplug the wire harness (4) Remove the heated seat switch assembly from the console. (5) Remove the heated seat switch(es) from the heated seat switch assembly. (6) Reverse the removal procedures to install. SEAT HEAT INTERFACE MODULE (1) Move the right power seat adjuster to its full up and full rear stop positions. (2) Disconnect and isolate the battery negative cable. (3) Unhook the seat cushion cover retainer from the seat cushion frame and pull back the seat cush- (4) Pull back the seat cushion to allow access to the Seat Heat Interface Module (SHIM). (5) Pull the SHIM upward to release the two mounting fasteners from either the module or the WARNING: THERE ARE MANY SHARP METAL EDGES ON THE SEAT CUSHION FRAME AND SEAT (6) Reverse the removal procedures to install. Be certain that the SHIM terminals are aligned with the HEATED SEAT RELAY (1) Move the right power seat adjuster to its full up and full rear stop positions. (2) Disconnect and isolate the battery negative cable. (3) Unhook the seat cushion cover retainer from the seat cushion frame and pull back the seat cush- (4) Pull back the seat cushion to allow access to the Heated Seat Relay. Fig. 2 Seat Heat Interface Module Remove/Install 1 – SEAT CUSHION FRAME 8N - 12 ELECTRICALLY HEATED SYSTEMS XJ DIAGNOSIS AND TESTING (Continued) |