Liberty Sport 2WD L4-2.4L VIN 1 (2002)
Seat Heater: Testing and Inspection
Heated Seat System
Heated Seat System Self-Diagnosis
HEATED SEAT SYSTEM SELF-DIAGNOSIS
The heated seat system is capable of performing some self-diagnostics. The following table depicts the various monitored failures which will be
reported to the vehicle operator or technician by flashing the individual heated seat switch Light Emitting Diode (LED) indicator lamps. Refer to the
Heated Seat System Self-Diagnosis table for failure identification. The driver side heated seat switch indicator lamps will flash if a failure occurs in
the driver side heated seat, and the passenger side heated seat switch indicator lamps will flash for a passenger side heated seat failure. If a monitored
heated seat system failure occurs, the switch indicator lamps will flash at a pulse rate of about one-half second ON, followed by about one-half
second OFF for a duration of about one minute after the switch for the faulty heated seat is depressed in either the Low or High direction. This
process will repeat every time the faulty heated seat switch is actuated until the problem has been corrected.
If the heated seat system failure is identified by flashing heated seat switch indicator lamps, go to the appropriate diagnosis and testing procedure in
this section and confirm the condition, using the step by step procedure. If the monitored failure is confirmed, replace the component. If the monitored
failure is not confirmed, replace the heated seat module with a known good unit and retest the system.
HEATED SEAT SYSTEM TESTING
Refer to Wiring Diagrams for the location of complete heated seat system wiring diagrams. Before testing the individual components in the heated seat
system, perform the following preliminary checks:
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If a single indicator lamp for one heated seat switch does not operate and the heated seat elements do heat, refer to Diagnosis and Testing the
Heated Seat Switch in this section for the location of heated seat switch diagnosis and testing procedures.
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If both indicator lamps for a heated seat switch operate, but the heated seat elements do not heat, refer to Diagnosis and Testing the Heated Seat
Module in Electronic Control Modules for the location of heated seat module diagnosis and testing procedures.
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If an indicator lamp on either heated seat switch remains illuminated after the heated seat has been turned OFF, refer to Diagnosis and Testing the
Heated Seat Module in Electronic Control Modules for the location of heated seat module diagnosis and testing procedures. Also refer to the Body
Diagnostic Manual for additional diagnosis and testing procedures.
