No Response From HSM (Heated Seat Module): Notes

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: HSM CAN B BUS, Fused B+ & Ground Circuit Schematic

Courtesy of CHRYSLER LLC

For complete wiring diagrams, refer to SYSTEM WIRING DIAGRAMS .

Possible Causes
(A33) FUSED B(+) CIRCUIT OPEN OR SHORTED
(Z917) GROUND CIRCUIT OPEN
(D55) AND (D54) CAN B BUS CIRCUITS OPEN
HEATED SEAT MODULE