Pinpoint Test Z: The Heated Seat Is Inoperative - Left Rear Seat Does Heat But The Heated Seat Indicator Is On All The Time

Seats

Pinpoint Tests

Pinpoint Test Z: The Heated Seat is Inoperative - Left Rear Seat Does Heat But the Heated Seat Indicator is On All the Time

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 hi 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) (hi 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 Z: THE HEATED SEAT IS INOPERATIVE - LEFT REAR SEAT DOES HEAT BUT THE HEATED SEAT INDICATOR IS ON ALL THE TIME

WARNING: Never install heated seat parts not intended for use on this vehicle. Parts released for other model years or vehicle lines are not compatible even if they appear visually and physically similar. Installing incorrect parts will result in heated seat system performance outside design specification. Failure to follow this instruction may result in serious personal injury.

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Z1 CHECK CIRCUITS CHS49 (VT) AND CHS48 (YE) FOR A SHORT TO VOLTAGE


- Disconnect: Heated Seat Module C3162.
- Did the affected hi 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 Seat Heated Seat Module - Rear Seat. TEST the system for normal operation.

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

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