S-Type (X200) V8-4.2L (2005)
Wiring Harness HVAC: All Technical Service Bulletins
A/C - Unable to Lower Outlet Temperature
NUMBER: JTB00103
MODEL:
S-TYPE
DATE: 13 JUNE 2008
SECTION: 412
Unable to Reduce Climate Control Outlet Temperature - Diagnostic Procedure
AFFECTED VEHICLE RANGE:
S-TYPE (X200)
VIN: L00600 - N91220
Model Year: 2000 - 2008
CONDITION SUMMARY:
Situation:
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.
PARTS:
No parts necessary; diagnostic information only
TOOLS:
IDS with latest IDS DVD Patch File; software first available on IDS DVD112 Patch File 1 Midtronics PSC-550 Vehicle Power Supply
WARRANTY:
Normal warranty policy and procedures apply.
DIAGNOSTIC PROCEDURE
VERIFYING CUSTOMER CONCERN
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