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A/C-HEATER SYSTEM - MANUAL

2001 Chevrolet Camaro

2000-01 MANUAL A/C-HEATER SYSTEMS

General Motors

Chevrolet; Camaro

Pontiac; Firebird

* PLEASE READ THIS FIRST *

WARNING: To avoid injury from accidental air bag deployment, read and

carefully follow all SERVICE PRECAUTIONS and DISABLING &

ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT

SYSTEM article in ACCESSORIES/SAFETY EQUIPMENT section.

SPECIFICATIONS

Application Specification

Compressor Type ................................. Harrison V7 7-Cyl.

System Oil Capacity (1) ..................................... 9 ozs.

Refrigerant (R-134a) Capacity ............................ 24.0 ozs.

System Operating Pressures (2)

2000 Models

High Side ........................ 115-200 psi (8.1-14.1 kg/cm

)

Low Side ............................ 25-37 psi (1.8-2.6 kg/cm

)

2001 Models

High Side ....................... 202-244 psi (14.2-17.2 kg/cm

)

Low Side ............................ 40-44 psi (2.8-3.1 kg/cm

)

(1) - Use PAG Refrigerant Oil (Part No. 12345923).

(2) - Measured at ambient temperature of 70-80

F (21-27 C),

with more than 50 percent relative humidity.

DESCRIPTION

The manual A/C-heater system delivers heated or cooled and

dehumidified air. Air distribution is controlled through a manual A/C-

heater control panel and vacuum-operated doors.

OPERATION

A/C-HEATER CONTROL PANEL

Several mode settings are available on the A/C-heater control

panel to allow selection of a desirable comfort level. See Fig. 1. The

available settings are as follows:

OFF

No blower and A/C operation in this position. With vehicle

moving forward, a slight amount of air will enter passenger

compartment.

MAX

Maximum cooling is provided in this setting. Conditioned air

is distributed through dash registers. This is the only mode in which

Summary of content (22 pages)

PAGE 1
A/C-HEATER SYSTEM - MANUAL 2001 Chevrolet Camaro 2000-01 MANUAL A/C-HEATER SYSTEMS General Motors Chevrolet; Camaro Pontiac; Firebird * PLEASE READ THIS FIRST * WARNING: To avoid injury from accidental air bag deployment, read and carefully follow all SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT SYSTEM article in ACCESSORIES/SAFETY EQUIPMENT section.
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some of the air is recirculated through the A/C system. A/C Conditioned air is directed through dash registers. Bi-Level Conditioned air is directed through dash registers and floor outlets. A small amount of air is directed to defrost outlets. Vent Compressor does not operate in this setting. Outside air is delivered through dash registers. Heater Compressor does not operate in this setting.
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1) Remove right instrument panel sound insulator. Remove temperature control cable from heater housing. Move temperature control knob from full cold to full hot setting. If cable binds or pulley does not rotate freely, replace cable. Set temperature control knob to detent position halfway between full cold and full hot setting. 2) If control cable pulley is offset by 5-10 degrees toward full cold side, no adjustment is necessary. See Fig. 2.
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NOTE: For additional trouble shooting information, see MANUAL A/C-HEATER SYSTEMS - TROUBLE SHOOTING article. BLOWER MOTOR 1) If blower does not operate, check HVAC fuse (20-amp) in instrument panel fuse block. If fuse is blown, check for short to ground in Brown wire between HVAC fuse (20-amp) and mode selector switch 3-pin connector terminal "C". If fuse is okay, check I/P-1 fuse (40-amp) in underhood electrical center.
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Ambient High Pressure Low Pressure Temp. F ( C) psi (kg/cm ) psi (kg/cm ) 70-80 (21-29) (1) ...... 115-190 (8.1-13.4) ........ 70-80 (21-29) (2) ...... 115-200 (8.1-14.1) ........ 80-90 (27-33) (1) ...... 140-215 (9.8-15.1) ........ 80-90 (27-33) (2) ..... 150-235 (10.5-16.5) ....... 90-100 (33-38) (3) .... 165-260 (11.6-18.2) ....... 90-100 (33-38) (4) .... 185-270 (13.0-19.0) ....... 100-110 (38-44) (5) ... 210-290 (14.8-20.
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A/C SYSTEM PERFORMANCE TEMPERATURE SPECIFICATIONS (2001 MODELS) Ambient Temp. F ( C) Center Vent Temp. F ( C) 70-80 (21-27) (1) ...................................... 38-48 (3-9) 70-80 (21-27) (2) ..................................... 40-55 (4-13) 80-90 (27-33) (1) ..................................... 38-55 (3-13) 80-90 (27-33) (2) ..................................... 45-65 (7-18) 90-100 (33-38) (3) .......................
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relay harness connector terminal B2 (Dark Blue wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 6). 5) Repair short to battery voltage in Dark Blue wire between blower motor relay harness connector terminal B2 and blower motor resistor harness connector terminal "C". After repair, go to step 9). 6) Using test light connected to ground, probe blower motor relay harness connector terminal C1 (Purple wire). If test light illuminates, go to next step.
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14) Operate blower system to verify repair. If blower motor operates normally, repair is complete. If blower motor is still inoperative, return to step 2). BLOWER MOTOR INOPERATIVE IN HIGH SPEED 2000 Models 1) Perform DIAGNOSTIC SYSTEM TEST. Go to next step. 2) Set mode switch in VENT position. Set blower motor switch in highest speed position. Using test light connected to ground, backprobe A/C-heater control panel harness connector C1 terminal "B" (Orange wire).
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harness connector terminal B2 (Dark Blue wire) and C1 (Purple wire). Turn ignition switch to ON position. Set mode selector switch to VENT position. Place blower motor switch in low speed position. If blower motor operates, go to step 8). If blower motor does not operate, go to step 7). 5) Check for poor connection or connector damage at blower switch harness connector. Repair or replace as necessary. After repair, go to step 20). If connection is okay, go to next step. 6) Replace blower motor switch.
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position. If blower operates in any position, problem is intermittent. Check for poor connections. loose components or damaged wiring. Repair or replace as necessary. After repair, go to step 16). If blower motor does not operate in any speed position, go to next step. 3) Turn ignition switch to OFF position. Disconnect blower motor harness connector. Turn ignition switch to ON position. Place blower motor switch in lowest speed position.
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switch in VENT position. Set blower motor switch in lowest speed position. Using test light connected to ground, probe blower motor resistor harness connector terminal "C" (Dark Blue wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 4). 3) Using test light connected to ground, probe blower motor relay harness connector terminal B2 (Dark Blue wire). If test light illuminates, go to step 6). If test light does not illuminate, go to step 8).
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1) Perform DIAGNOSTIC SYSTEM TEST. Go to next step. 2) Turn ignition switch to ON position. Set mode switch to VENT position. Turn blower switch to each speed position. If blower motor operates normally, go to next step. If blower motor malfunctions, go to step 4). 3) Place blower motor switch at maximum speed position. Place mode switch in each position. If blower operates in each switch position, problem is intermittent. Check for faulty wiring, poor connections or damaged components. Repair as necessary.
PAGE 13
14) Check Light Green wire between A/C-heater control panel harness connector C2 terminal "B" and blower motor switch harness connector C1 terminal "E" located at A/C-heater control panel for open or high resistance. Repair Light Green wire as necessary. After repair, go to step 24). If wire is okay, go to step 18). 15) Check for poor connections or connector damage at blower motor relay harness connector. Repair or replace as necessary. After repair, go to step 24). If connections are okay, go to step 20).
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Removal (5.7L Engine) Disconnect negative battery cable. Discharge A/C system, using approved refrigerant recovery/recycling equipment. Raise and support vehicle. Remove serpentine drive belt and tensioner. Remove compressor and condenser hose bolt. Disconnect compressor and condenser hose assembly. Discard seal. Disconnect transmission oil cooler pipes from engine bracket. Disconnect compressor electrical connector. Remove compressor bolts. Remove compressor.
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2) Raise and support vehicle. Remove compressor and condenser hose assembly fitting at condenser. Discard "O" ring. Lower vehicle. Remove accumulator tube. Remove radiator air upper baffle from condenser. Remove condenser. 3) To install, reverse removal procedure. Lightly coat "O" rings with mineral-base refrigerant oil. Evacuate and charge A/C system. EVAPORATOR TUBE Removal Disconnect negative battery cable. Discharge A/C system, using approved refrigerant recovery/recycling equipment.
PAGE 16
Fig. 3: Exploded View Of A/C-Heater Assembly Courtesy of General Motors Corp. Installation 1) To install, reverse removal procedure.
PAGE 17
screen to new evaporator. Using appropriate adhesive, install NEW evaporator core gasket in same position as original. Slide new evaporator to right until full seated in A/C-heater case. 2) Apply sealer (not epoxy) between evaporator and evaporator upper and lower case. Using epoxy, glue perforated section of heater and A/C evaporator case to A/C-heater case. After epoxy dries, use thumb to grade sealant on inside and outside to ensure a water-tight seal.
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ring, as this will cause it to expand. Insert short screen end of orifice tube first. Evacuate, charge, and leak test A/C system. TORQUE SPECIFICATIONS TORQUE SPECIFICATIONS Application Ft. Lbs. (N.m) Accumulator Hose Fitting At Evaporator ..................... Accumulator Tube Bolt ...................................... Compressor & Condenser Hose Bolt ........................... Compressor & Condenser Hose Fitting At Condenser ....
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Fig. 4: Manual A/C-Heater System Wiring Diagram (2000 Camaro & Firebird With 3.
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Fig. 5: Manual A/C-Heater System Wiring Diagram (2000 Camaro & Firebird With 5.
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Fig. 6: Manual A/C-Heater System Wiring Diagram (2001 Camaro & Firebird With 3.
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Fig. 7: Manual A/C-Heater System Wiring Diagram (2001 Camaro & Firebird With 5.