PRINCIPLE OF OPERATION
For a detailed description of the seats and seat operation, refer to Seats . .
PINPOINT TEST G: HEATING AND COOLING - NOISY OPERATION
Pinpoint Test G
G1
CHECK FOR STORED DTC
- Check the Climate Controlled Seat Module for stored DTC's.
Are there any stored DTC's?
YES For information on stored DTC's refer to the information in the Climate Controlled Seat Module DTC index.
NO Go to G 2 . → G2
G2
DRIVER OR FRONT PASSENGER SEAT BACKREST CLIMATE ASSEMBLY - NOISE
- There is a known issue which effects a limited number of vehicles where under acceleration of the vehicle the occupant of seat can deform the suspension mat (snake wire) which then presses on the casing of the seat backrest climate assembly, this causes the casing to distort and the noise issue to occur. If contact has occurred there will be a witness mark on the casing. Carry out visual inspection of the seat backrest climate assembly that has been identified as noisy by the customer.
Is there a witness mark on the casing?
YES Contact the local in market support for further information.
NO Go to G 3 . → G3
G3
DRIVER OR FRONT PASSENGER SEAT CLIMATE ASSEMBLY - NOISE 2
- Operate the heat and cool function of the seat. Listen for a 'WAH WAH' noise (the fan speeds up and slows down repeatedly).
Does the fan speeds up and slow down repeatedly?
YES Confirm the latest Strategy and Calibration software is installed, using the manufacturer approved diagnostic system carry out the new Climate Controlled Seat Module application and update the Climate Controlled Seat Module software if required. If the noise is still evident after software update follow link below. Go to G 4 . → G4
NO Go to step 4 . → 4
G4
DRIVER OR FRONT PASSENGER SEAT BACKREST CLIMATE ASSEMBLY - NOISE LEVEL COMPARISON
- Compare the noise level of the suspect climate seat assembly to another climate seat assembly.
Is the noise level equal between the two seats?
YES The noise level is standard and comparable to the design intent.
NO Suspect an internal fault with the Seat Climate Assembly. Replace as required, refer to the Warranty Policy and Procedures manual (section B1.2). Prior to installing a new component.
PINPOINT TEST I: HEATING AND COOLING - HEAT OR COOL OPERATION SLOW
Pinpoint Test I
I1
Check For Stored DTC
- Check the Climate Controlled Seat Module for stored DTC's.
Are there any stored DTC's?
YES For information on stored DTC's refer to the information in the Climate Controlled Seat Module DTC index.
NO Go to I 2 . → I2
I2
DRIVER OR FRONT PASSENGER SEAT BACKREST CLIMATE ASSEMBLY - FUNCTIONALITY CHECK
- Check the heat and cool function of the backrest?
Does the backrest heat and cool function operate correctly?
I3
DRIVER OR FRONT PASSENGER SEAT CUSHION CLIMATE ASSEMBLY - FUNCTIONALITY CHECK
- Check the heat and cool function at the cushion.
Does the cushion heat and cool function operate correctly?
YES If there are no faults evident, verify the customer concern.
NO Go to I 4 . → I4
I4
CUSHION BELLOWS
- Check the condition of the bellows.
Are the bellows obstructed, have they collapsed?
YES Remove the obstruction or replace collapsed bellows.
NO Go to I 7 . → I7
I5
Backrest Bellows Duct
- Check the security of the bellows duct.
Is the bellows duct correctly installed?
YES Go to I 6 . → I6
NO Securely reconnect the bellows duct.
I6
BACKREST BELLOWS
- Check the security of the bellows.
Are the bellows obstructed, have they collapsed?
YES Remove the obstruction or replace collapsed bellows.
NO Suspect an internal fault with the Seat Climate Assembly. Replace as required, refer to the Warranty Policy and Procedures manual (section B1.2). Prior to installing a new component. Follow the link below to check operation of the Driver or Front Passenger Seat Cushion Climate Assembly. Go to step I 2 . → 2
I7
DRIVER OR FRONT PASSENGER SEAT BACKREST CLIMATE ASSEMBLY - OPERATION COMPARISON
- Compare the operation of the suspect climate seat assembly to another climate seat assembly.
Is the operation equal between the two seats?
YES The operation is standard and comparable to the design intent.
NO Suspect an internal fault with the Seat Climate Assembly. Replace as required, refer to the Warranty Policy and Procedures manual (section B1.2). Prior to installing a new component.
PINPOINT TEST J: HEATING AND COOLING - INTERMITTENT OPERATION
Pinpoint Test J
J1
Check For Stored DTC
- Check the Climate Controlled Seat Module for stored DTC's.
Are there any stored DTC's?
YES For information on stored DTC's refer to the information in the Climate Controlled Seat Module DTC index.
NO Go to J 2 . → J2
J2
CABLE CONNECTION CHECK
- Identify from customer concern or stored DTC's which Seat Climate Assembly is operating intermittently and confirm the harness connector is fully connected.
Is the harness connector is fully connected?
YES Suspect an internal fault with the Seat Climate Assembly. Replace as required, refer to the Warranty Policy and Procedures manual (section B1.2). Prior to installing a new component.
NO Disconnect the harness connector, inspect connector and terminals for damage. Repair or replace if required. Reconnect connector and check operation.
PRINCIPLES OF OPERATION
Heated seats incorporate heater elements in the cushion and the backrest of the seat. Each cushion heater element has a thermal sensor, which supplies a feedback temperature signal to the related seat heater module. The backrest heater elements do not have a thermal sensor, and are regulated at the same temperature as the cushion heater elements.
For a detailed description of the seat heater mat, refer to Seats . .
For a detailed description of the seating systems and operation, refer to Seats .