Page 1674 of 3039

Published: 11-May-2011
Climate Control System - General Information - Electronic Leak Detection
General Procedures
1. WARNING: Good ventilation is necessary in the area where A/C leak
testing is to be carried out. If the surrounding air is contaminated with
refrigerant gas, the leak detector will indicate this gas all the time.
Odors from other chemicals such as antifreeze, diesel fuel, disc brake
cleaner, or other cleaning solvents can cause the same problem. A fan,
even in a well ventilated area, is very helpful in removing small traces of
contamination from the air that might affect the leak detector. Failure to
follow this instruction may result in personal injury.
Attach an R-134a manifold gauge set or use a UL-approved
recovery/recycling device such as an R-134a A/C refrigerant center (which
meets SAE Standard J 1991). For additional information, refer to the
manufacturers equipment instructions.
Both gauges should indicate 413-551 kPa (60-80 psi) at 24°C
(75°F) with the engine off.
If little or no pressure is indicated, carry out the air conditioning
(A/C) system recovery, evacuation and charging procedure.
For additional information, refer to Air Conditioning (AC) System Recovery, Evacuation and Charging in this section.
2. Use an R134-a Automatic calibration halogen leak detector to leak test
the refrigerant system. For additional information, refer to the
manufacturers equipment instructions.
3. If a leak is found, carry out the air conditioning (A/C) system recovery
procedure.
For additional information, refer to Air Conditioning (AC) System Recovery, Evacuation and Charging in this section.
Page 1700 of 3039
1 Pressure relief valve 2 Outlet port 3 Inlet port 4 Solenoid valve 5 Electrical connector 6 Pulley The A/C compressor circulates refrigerant around the system by compressing low pressure, low temperature vapor from the evaporator and discharging the resultant high pressure, high temperature vapor to the condenser.
The A/C compressor is a permanently engaged variable displacement unit which is driven by the engine accessory drive belt. To protect the system from excessive pressure, a pressure relief valve is installed in the outlet side of the A/C compressor. The pressure relief valve vents excess pressure into the engine compartment.
Page 1703 of 3039
pressure/temperature regimes. Larger diameter pipes are installed in the low pressure/temperature regime and smaller
diameter pipes are installed in the high pressure/temperature regime.
Low and high pressure charging connections are incorporated into the refrigerant lines for system servicing.
Page 1762 of 3039
Published: 11-May-2011
Climate Control - Desiccant Bag V6 3.0L Petrol/V8 5.0L Petrol/V8 S/C 5.0L
Petrol
Removal and Installation
Removal
NOTE: Removal steps in this procedure may contain installation details.
1. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
2. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures).
3. Refer to: Radiator Splash Shield (501-02 Front End Body Panels, Removal and Installation).
4. www.JagDocs.com
Page 1775 of 3039
Published: 11-May-2011
Air Conditioning - Air Conditioning (A/C) Compressor V8 5.0L Petrol/V8 S/C 5.0L Petrol
Removal and Installation
Removal
NOTE: Removal steps in this procedure may contain installation details.
1. Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
2. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
3. Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).
4. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures).
5. Refer to: Specifications (412-00 Climate Control System - General Information, Specifications).
6. Refer to: Refrigerant Oil Adding - V6 3.0L Petrol (412-00 Climate Control System - General Information, General Procedures).
7. www.JagDocs.com
Page 1777 of 3039
Air Conditioning - Condenser Core V8 S/C 5.0L Petrol
Removal and Installation
Removal
NOTE: Removal steps in this procedure may contain installation details. Published: 11-May-2011
1. Refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures).
2. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle.
3. Refer to: Radiator (303-03D Supercharger Cooling - V8 S/C 5.0L Petrol, Removal and Installation).
4. NOTE: Some variation in the illustrations may occur, but
the essential information is always correct. www.JagDocs.com
Page 1779 of 3039
Air Conditioning - Pressure Cutoff Switch
Removal and Installation
Removal
NOTE: Removal steps in this procedure may contain installation details. Published: 11-May-2011
1. For additional information, refer to: Air Conditioning (A/C) System Recovery, Evacuation and Charging (412-00 Climate Control System - General Information, General Procedures).
2. For additional information, refer to: Air Cleaner (303-12, Removal and
Installation).
3.
4. CAUTION: Make sure the air conditioning (A/C) hose
does not turn when removing the low pressure switch.
TORQUE: 8 Nm
Installation
1. To install, reverse the removal procedure.
Page 1806 of 3039

DTC Description Possible Cause Action U300046 Control Module
Calibration/parameter memory
failure Suspect the instrument cluster, check and install a new
instrument cluster as required, refer to the new
module/component installation note at the top of the DTC
Index U300049 Control Module
Internal electronic failure Suspect the instrument cluster, check and install a new
instrument cluster as required, refer to the new
module/component installation note at the top of the DTC
Index U300055 Control Module
Incorrect car configuration
data received Re-configure the RJB using the manufacturer approved
diagnostic system. Clear DTC and re-test. If the DTC remains
suspect the instrument cluster. Check and install a new
instrument cluster as required, refer to the new
module/component installation note at the top of the DTC
Index U300087 Control Module
Missing message Re-configure the RJB using the manufacturer approved
diagnostic system. Check instrument cluster for additional
DTCs and refer to the DTC Index. Carry out CAN network
integrity tests using the manufacturer approved diagnostic
system. If DTC remains suspect the instrument cluster.
Check and install a new instrument cluster as required, refer
to the new module/component installation note at the top of
the DTC Index U300281
Vehicle
Identification
Number
Vehicle/component mis-match.
Corrupt VIN data being
transmitted, instrument
cluster previously installed to
other vehicle Check and install original/new instrument cluster as required,
refer to the new module/component installation note at the
top of the DTC Index U300316 Battery Voltage
Instrument cluster logic power
supply circuit - voltage below
threshold Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check instrument cluster logic
power supply circuit for short to ground, open circuit U300317 Battery Voltage
Instrument cluster logic power
supply circuit - circuit voltage
above threshold Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Check
charging system for over charging condition U300362 Battery Voltage
Mis-match in battery voltage,
of 2 volts or more, between
instrument cluster and RJB Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check instrument cluster logic
power supply circuit for short, open circuit