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

Seats

Pinpoint Tests

Pinpoint Test Q: 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 command on the left rear heated seat. Voltage is then supplied to the left rear heated seat switch from the heated seat module on either circuit CHS48 (YE) (high heat mode) or circuit CHS49 (VT) (low heat mode) illuminating the switch indicator. Pressing the left rear heated seat switch again in the mode that is currently on will set the left rear heated seat to off and also turn that LED off.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Heated seat module



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

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Q1 CHECK HEATED SEAT 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 - Second Row Heated Seat Module - Second Row. TEST the system for normal operation.

No
REPAIR the affected circuit. TEST the system for normal operation.

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