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Service Specifications

A/C SYSTEM SPECIFICATIONS

Application

Specification

Compressor Type

⁽¹⁾⁽²⁾

Belt Tension

⁽³⁾

Blower Motor

⁽⁴⁾

Evaporator Sensor Compressor Control

Compressor Off

Less Than 35.6°F (2°C)

Compressor On

Greater Than 37.4°F (3°C)

Integral Compressor Safety Valve

Opening Pressure

596 psi (41.0 BAR)

Reset Pressure

400 psi (27.6 BAR)

Pressure Switch

Compressor Operation ⁽⁵⁾

29-435 psi (2-30 BAR)

Cooling Fan Operation ⁽⁶⁾

High Speed

⁽⁷⁾

Low Speed

⁽⁸⁾

System Component Oil Capacity ⁽⁹⁾

Compressor

In Service

⁽¹⁰⁾ Amount Drained

Replacement

⁽¹⁰⁾ Amount Drained From Original Compressor

With Condenser Replacement

⁽¹⁰⁾ 1.4 ozs. (40 ml)

With Evaporator Replacement

⁽¹⁰⁾ 1.4 ozs. (40 ml)

With Receiver Drier Replacement

⁽¹¹⁾

System Oil Capacity ⁽⁹⁾

Up To VIN F59525

5.4-6.8 ozs. (160-200 ml)

From VIN G00442 ⁽¹²⁾

2 Zone System

4.7 ozs. (140 ml)

4 Zone System

6.1 ozs (180 ml)

System Refrigerant Capacity ⁽¹³⁾

Up To VIN F59525

22.9-24.7 ozs. (650-700 g)

From VIN G00442 ⁽¹²⁾

2 Zone

22.0-23.8 ozs (625-675 g)

4 Zone

27.3-29.1 ozs. (775-825 g)

System Refrigerant Operating Pressures

High Side

⁽¹⁴⁾ 160-203 psi (11-14 BAR)

Low Side

⁽¹⁵⁾ 32-35 psi (2.2-2.4 BAR)

⁽¹⁾	Fixed displacement with integral high pressure safety valve.

⁽²⁾	Internal components of the A/C compressor are not serviceable. Compressor is serviced only as an assembly.

⁽³⁾	Belt tension is automatically adjusted by belt tensioner.

⁽⁴⁾	Blower motor will remain off at coolant temperatures below 95°F (35°C), unless DEFROST, FACE or DEMIST modes are selected.

⁽⁵⁾	Pressure switch provides a signal for compressor operation to the Engine Control Module (ECM) via the A/C control module. If pressure falls below or rises above the specified range, ECM will disengage the compressor clutch.

⁽⁶⁾	Pressure switch provides a signal directly to the ECM for cooling fan operation.

⁽⁷⁾	When pressure rises above 319 psi (22.0 BAR), the ECM will switch the cooling fan from low to high speed. When pressure falls below 245 psi (17.5 BAR), the ECM will switch the cooling fan high to low speed.

⁽⁸⁾	When pressure rises above 174 psi (12.0 BAR), the ECM will turn the cooling fan on low speed. When pressure falls below 116 psi (8.0 BAR), ECM will turn off the cooling fan.

⁽⁹⁾	Use PAG (WSH-MIC231-B) refrigerant oil.

⁽¹⁰⁾	Add amount of oil that was withdrawn from the system during the recovery process to the amount specified. This amount is typically 1.0-1.4 ozs. (30-40 ml).

⁽¹¹⁾	Add only the amount of oil withdrawn during system recovery process.

⁽¹²⁾	The 2 zone system allows the front occupants to set individual temperatures for the left and right sides of the interior. The 4 zone system allows front and rear occupants to set individual temperatures (2 front zones and 2 rear zones).

⁽¹³⁾	When adding refrigerant to system, engine speed must not exceed 2000 RPM for the first 2 minutes of compressor operation.

⁽¹⁴⁾	Measured at an ambient Temperature of 80°F (27°C).

⁽¹⁵⁾	Pressure based on evaporator temperature of 35.6-37.4°F (2-3°C).