Power Lumbar Seats: Notes

To diagnose power lumbar seats, perform indicated test. See POWER LUMBAR SEAT DIAGNOSIS table.

POWER LUMBAR SEAT DIAGNOSIS

Symptom

Go To:

Seat Support Functions Inoperative On Left Or Right Seat; Seat Air Pump Inoperative

Test No. 1

Seat Air Pump Runs Continuously For More Than 20 Seconds

⁽¹⁾

All Non-Pneumatic Or Pneumatic Functions Inoperative On Both Seats

⁽²⁾

Pneumatic Functions On Both Seats Inoperative, But Non-Pneumatic Functions Operate ⁽³⁾

Test No. 1

All Pneumatic Functions Inoperative On One Seat

Test No. 2

One Or More Pneumatic Functions Inoperative On One Or Both Seats

Test No. 3

Only Inflate Or Deflate Function Operates ⁽⁴⁾

Test No. 4

All Non-Pneumatic Functions Inoperative On Left Seat

Test No. 6

All Non-Pneumatic Functions Inoperative On Right Seat

Test No. 5

One Or More Non-Pneumatic Functions Inoperative On One Or Both Seats

Test No. 7

⁽¹⁾	Check for open or disconnected pneumatic line to seat bladder for inoperative seat functions. If selected bladder does not inflate, also check for air leak in bladder.

⁽²⁾	Check for open in Orange and Black wires to console seat switch or seat control module. If circuits are okay, replace console seat switch.

⁽³⁾	Seat air pump motor cannot be heard when a pneumatic support adjustment is attempted.

⁽⁴⁾	Seat air pump motor cannot be heard when inoperative pneumatic support adjustment is attempted.