Jeep Cherokee Service ManualElectrically heated systems » Heated seat system » Description and operation
Seat heat interface module
Seat heat interface module
The Seat Heat Interface Module (SHIM) is an electronic microprocessor controlled device designed to operate the electric seat heater elements. The SHIM is located under the right front seat cushion. Inputs to the module include the console mounted resistor multiplexed switch signals, seat cushion temperature sensors, a relay-switched battery feed, and a ground.
The SHIM outputs are the feed for the seat heating elements and sensors, and the switch telltale circuits.
The SHIM cannot be repaired and, if faulty or damaged, it must be replaced.
Heated seat relay
The heated seat relay is located under the right front seat cushion near the SHIM. Ignition and battery power is fed to the relay, which then provides a switched battery feed to the SHIM. The heated seat relay cannot be repaired and, if faulty or damaged, it must be replaced.
Heated seat switch
Seat heat interface module
Heated seat element and sensor
Jeep Cherokee Service Manual
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