For 1990-2009 cars

Symptom | Procedure
--- | ---
Both the left heated seat and right heated seat is inoperable. |

• | If the heated seat switch LED does not turn ON, check the 10A IGN 3 fuse in LIPFB, or check either the rear defog or A/C recirc functionality.

• | If the heated seat switch LED does turn ON, but the seat doesn't heat, check the 20A HTD SEAT fuse in RIPFB.

• | If the fuse is blown, check for the following:

- | For a blown IGN 3 fuse, check circuit 641, BRN, between LIPFB terminal 12 and heated seat switch terminal H, for the left seat, or terminal A for the right seat.

- | For a blown HTD SEAT fuse, check circuit 141, BRN, between RIPFB terminal A9 and seat terminal 3, for both the left and right seats.

• | Check for operation of both heated seats.

Only the left heated seat or right heated seat is inoperable. | Chart 1
The heated seat works in LO, but no in the HI position, or works in HI, but not in the LO position. |

• | Replace the heated seat switch.

• | Check the operation of the heated seat.

All driver seat power seat functions are inoperable. | Chart 2
The driver seat power forward/backward seat adjuster is inoperable. | Chart 3
The driver seat power seat bottom height adjuster is inoperable. | Chart 4
The driver seat power seat recliner is inoperable. | Chart 5