Home Auto Repair 2003 Jaguar S-Type Unable to Reduce Climate Control Outlet Temperature – Diagnostic...

2003 Jaguar S-Type Unable to Reduce Climate Control Outlet Temperature – Diagnostic Procedure

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Download The outlet temperature of the climate control system may not be able to be lowered from either the driver or passenger face and side vents; there may also be an extreme difference between the driver and passenger sides. This issue may be caused by a fault within the Dual Coolant Control Valve (DCCV) or the Dual Automatic Temperature Control (DATC) or an electrical circuit fault. Action: In the event of a customer concern of the above, refer to the Diagnostic Procedure outlined below to assist in determining if the fault is electrical or mechanical. 1. Verify A/C compressor operation, refrigerant charge level, and system powers and grounds. 2. Start engine. 3. Using the Dual Automatic Temperature Control (DATC), select: ^ ‘HIGH’ temperature ^ ‘HIGH’ fan speed ^ ‘RECIRC’ and ‘PANEL’ modes 4. Allow vehicle to sit for five minutes. 5. Using the DATC, select: ^ ‘LOW’ temperature 6. Allow vehicle to sit for five minutes 7. Using a suitable temperature gauge, record the outlet temperature from both the driver and passenger air distribution vents. Recorded temperatures should be 7°C (45°F). 8. If the recorded temperatures are within 6°C (10°F) of each other, the climate control system is operating normally and no additional diagnosis is necessary.