lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 13980 > < Initial Inspection and Diagnostic Overview|Page 13978
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(a) Disconnect the z56 and z57 switch connectors.
(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE CURTAIN SWITCH (REAR SEAT HEATER SWITCH)

Rear Right Seat's Seat Heater Does Not Operate

SEAT: SEAT HEATER SYSTEM: Rear Right Seat's Seat Heater does not Operate

Rear Right Seat's Seat Heater does not Operate

DESCRIPTION

When the seat heater switch is operated, the rear power seat switch receives the signal. The rear power seat switch then sends the signal to the rear seat
climate control ECU through LIN communication. The rear seat climate control ECU receives the signal and operates the seat heater.

WIRING DIAGRAM

Initial Inspection and Diagnostic Overview|Page 13980 > < Initial Inspection and Diagnostic Overview|Page 13978