Pinpoint Test D: Heating And Cooling - Heat Or Cool Operation Slow

1. Check the automatic temperature control module for stored DTCs

Are there any stored DTCs?

• Yes: For information on stored DTCs refer to the information in the DIAGNOSTIC TROUBLE CODE INDEX DTC: AUTOMATIC TEMPERATURE CONTROL MODULE (ATCM) -- DISCOVERY SPORT/L550 .
• No: GO to  D2.

Before work is carried out, make the air bag supplemental restraint system safe. For additional information, refer to STANDARD WORKSHOP PRACTICES

The climate controlled seat's (heat and cool) functions will only operate when the vehicle's engine is running

1. Check the heat and cool function of the backrest?

Does the backrest heat and cool function operate correctly?

• Yes: GO to  D3.
• No: GO to  D5.

1. 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  D4.

1. Check the condition of the bellows

Are the bellows obstructed, have they collapsed?

• Yes: Remove the obstruction or replace collapsed bellows
• No: GO to  D7.

1. Check the security of the bellows duct

Is the bellows duct correctly installed?

• Yes: GO to  D6.
• No: Securely reconnect the bellows duct

1. 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 climate controlled seat assembly. Replace as required. Follow the link below to check operation of the seat cushion climate assembly GO to  D2.

1. 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 climate controlled seat assembly. Replace as required