55 - Heater & Air Conditioner.pdf - Tech2004 - eddie.t.h

55–1

HEATER & AIR CONDITIONER

–

AIR CONDITIONING SYSTEM

PRECAUTION

CAUTION:

Because the compressor has a high–voltage circuit, wear insulated gloves and pull out the service

plug to cut the high–voltage circuit before inspection.

551AE–01

DO NOT HANDLE REFRIGERANT IN AN ENCLOSED

AREA OR NEAR AN OPEN FLAME

ALWAYS WEAR EYE PROTECTION

AC2810

3. BE CAREFUL NOT TO GET LIQUID REFRIGERANT IN

YOUR EYES OR ON YOUR SKIN

If liquid refrigerant gets in your eyes or on your skin:

(a) wash the area with lots of cold water.

CAUTION:

Do not rub your eyes or skin.

(b)

apply clean petroleum jelly to the skin.

(c)

go immediately to a hospital or see a physician for profes-

sional treatment.

AC2811

NEVER HEAT CONTAINER OR EXPOSE IT TO NAKED

FLAME

BE CAREFUL NOT TO DROP CONTAINER OR APPLY

PHYSICAL SHOCKS TO IT

6. DO NOT OPERATE COMPRESSOR WITHOUT

ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM

If there is not enough refrigerant in the refrigerant system, oil lu-

brication will be insufficient and compressor burnout may occur.

Necessary care should be taken to avoid this.

7. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE

WHILE COMPRESSOR IS OPERATING

Open and close only the low pressure valve. If the high pressure

valves are opened, refrigerant flows in the reverse direction

causing the charging cylinder to rupture.

8. BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH

REFRIGERANT

If refrigerant is overcharged, it causes problems such as insuffi-

cient cooling, poor fuel economy, engine overheating, etc.

Wrong

Okay

N11084

2004 Prius – Preliminary Release (RM1075U)

Author:

Date:

740

55–2

HEATER & AIR CONDITIONER

–

AIR CONDITIONING SYSTEM

9. NOTICE FOR INITIALIZATION:

(a) When disconnecting the negative (–) battery terminal,

initialize the following systems after the terminal is

reconnected.

System Name see page

Power Window Control System 01–28

10. NOTICES FOR HYBRID SYSTEM ACTIVATION:

When the warning lamp is illuminated or the battery

has been disconnected and reconnected, pressing

the power switch may not start the system on the first

try. If so, press the power switch again.

With the power switch’s power mode changed to ON

(IG), disconnect the battery. If the key is not in the key

slot during reconnection, DTC B2799 may be output.

11. PRECAUTIONS TO BE OBSERVED WHILE SERVIC-

ING

NOTICE:

For the electric inverter compressor, use the ND–

OIL11.

Electrical insulation performance may decrease sig-

nificantly if even a small amount of oil other than ND–

OIL11 is used (or enters) in the refrigeration cycle,

causing the DTC to be output.

If other oil is accidentally used and a DTC is output,

collect the compressor oil in the compressor and re-

place it with ND–OIL11 to increase the ND–OIL11 ratio

amount.

Replace the main components (evaporator, condens-

er, and compressor) if a large amount of oil other than

ND–OIL11 enters the system. Failing to do so may

cause electrical insulation performance to remain

low, causing the DTC to be output.

CAUTION:

Wear insulated gloves and pull out the service plug clip be-

fore inspection, as some of the procedures require discon-

necting the high–voltage connectors (see page 05–1339 ).

2004 Prius – Preliminary Release (RM1075U)

Author:

Date:

741

55–3

HEATER & AIR CONDITIONER

–

AIR CONDITIONING SYSTEM

551AF–01

LOCATION

Engine Room J/B

PTC Heater Relay No.1

PTC Heater Relay No.2

Electric Inverter Compressor

(w/Motor Compressor Assy)

Pressure Switch

Integration

Relay

Heater Water Pump Assy

Fusible Link

Block Assy

(HTR 40 A)

Engine Room J/B

Integration Relay

A/C Ambient Temperature

Sensor

Fusible Link Block Assy (HTR 40 A)

PTC HTR1 Fuse (30 A) *1

A/C Inverter

(w/Converter Inverter Assy)

PTC HTR2 Fuse (30 A) *1

*1: Cold Area Models

I36307

2004 Prius – Preliminary Release (RM1075U)

Author:

Date:

742

55–4

HEATER & AIR CONDITIONER

–

AIR CONDITIONING SYSTEM

Spiral Cable

Gateway ECU

Steering Pad Switch RH

Combination Meter

Steering

Pad Switch LH

Multi Display

A/C Solar Sensor

Hybrid Vehicle

Control ECU

Driver Side J/B

ECM

Heater Relay

A/C Fuse (10 A)

GAUGE Fuse (10 A)

ECU–B Fuse (15 A)

DLC3

Body ECU

A/C Control Assembly

A/C Room Temperature Sensor

(Built in A/C Room Humidity Sensor)

I36308

2004 Prius – Preliminary Release (RM1075U)

Author:

Date:

743

55–5

HEATER & AIR CONDITIONER

–

AIR CONDITIONING SYSTEM

Cooler Expansion Valve

Air Inlet Control Servomotor

A/C Evaporator

Temperature Sensor

Cooler Evaporator No.1

Air Outlet Control Servomotor

Blower Assy

PTC Heater *1

Blower w/ Fan Motor Sub–assy

Heater Radiator

Unit Assy

Air Mix Control Servomotor

Air Conditioning

Radiator Assy

*1: Cold Area Models

I36310

2004 Prius – Preliminary Release (RM1075U)

Author:

Date:

744

55 - Heater & Air Conditioner.pdf

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