Pinpoint Test AC: The Heated Seat Does Not Operate Correctly - Left Rear Heated Seat Indicator is Always On

Seating

Pinpoint Test AC: The Heated Seat Does Not Operate Correctly - Left Rear Heated Seat Indicator is Always On

Refer to Wiring Diagram Set 119, Climate Controlled Seats for schematic and connector information. Diagrams By Number

Normal Operation

Pressing the left rear heated seat switch once in either the high or low mode will activate the left rear heated seat. Voltage is then supplied from the heated seat module to the appropriate switch indicator circuit CHS48 (high heat mode) or CHS49 (low heat mode) to illuminate the switch indicator. Pressing the switch button again (in the same mode) will deactivate the seat and indicator.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Heated seat module

PINPOINT TEST AC : THE HEATED SEAT DOES NOT OPERATE CORRECTLY - LEFT REAR HEATED SEAT INDICATOR IS ALWAYS ON

AC1 CHECK THE INDICATOR CIRCUITS FOR A SHORT TO VOLTAGE

- Disconnect: Heated Seat Module C3304A.

Did the affected high or low indicator LED turn off when the heated seat module was disconnected?

Yes
INSTALL a new heated seat module. REFER to Heated Seat Module - Rear . TEST the system for normal operation.

No
REPAIR circuit CHS49 (VT) or CHS48 (YE) for a short to voltage. TEST the system for normal operation.