1992 Cadillac Eldorado A/C & Heater Service (ONLINE REPAIR MANUALS)

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A/C & HEATER SERVICE PROCEDURES FOR 1992 Cadillac Eldorado AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 Cadillac Eldorado cars and light trucks from 1990+

Cooling Fans -> Passenger Cars Except Saturn -> CUTLASS SUPREME, GRAND PRIX & REGAL -> COMPONENT REPLACEMENT -> Coolant Fan, Replace -> Cooling Fan Isolation Test -> Cooling Fan Runs At High Speed Only -> DESCRIPTION -> EXCEPT REGAL w/3800 (VIN L) ENGINE -> High Speed Operation -> Low Speed Operation -> MODELS EXCEPT REGAL w/3800 (VIN L) ENGINE -> No Cooling Fans Operate At High Speed -> Primary Coolant Fan Does Not Run -> Primary Coolant Fan Runs Continuously With Engine Coolant Cool & A/C Mode Selector Off -> Primary Cooling Fan Does Not Run -> Primary Cooling Fan Does Not Run At High Speed -> REGAL w/3800 (VIN L) ENGINE -> Secondary Coolant Fan And/Or Generator Coolant Fan (VIN X) Does Not Run -> Secondary Coolant Fan And/Or Generator Coolant Fan Runs Continuously With Engine Coolant Cool & A/C Mode Selector Off -> Secondary Cooling Fan Does Not Run -> Secondary Cooling Fan Does Not Run At High Speed -> SYSTEM DIAGNOSIS -> SYSTEM DIAGNOSIS & TESTING -> TROUBLESHOOTING
Vehicle: 1992 Cadillac Eldorado 4.9 V8 GAS

DESCRIPTION

EXCEPT REGAL w/3800 (VIN L) ENGINE

Each coolant fan is turned on and off by separate coolant fan relays.

The primary coolant fan relay coil is grounded through the ECM when vehicle speed is less than a speed determined by the ECM and engine coolant reaches 227°F with A/C off and 223°F with A/C on. The contacts close and voltage is applied through the primary coolant fan relay to the primary coolant fan. The primary coolant fan runs until the ignition switch is turned off, or coolant temperature decreases to 220°F with A/C off...

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A/C & HEATER SERVICE PROCEDURES FOR 1992 Cadillac Eldorado AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 Cadillac Eldorado cars and light trucks from 1990+

Cooling System Capacities -> General Motors Corp./Saturn Passenger Cars -> 1992-2002 Cadillac Eldorado & Seville
Vehicle: 1992 Cadillac Eldorado 4.9 V8 GAS

[[table data]]

CLICK HERE TO GET FULL ACCESS TO 1992 Cadillac Eldorado A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 1992 Cadillac Eldorado AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 Cadillac Eldorado cars and light trucks from 1990+

Manual Air Conditioning & Heater System Diagnosis & Testing -> Passenger Cars -> A/C COMPONENT DIAGNOSIS & TESTING -> 1992 CAMARO & FIREBIRD -> 1992 CAPRICE, CUSTOM CRUISER & ROADMASTER -> 1992 METRO -> 1992 PRIZM -> 1993 CAMARO & FIREBIRD -> 1993 CAPRICE & ROADMASTER -> 1993 METRO -> ACHIEVA, GRAND AM & SKYLARK -> BERETTA & CORSICA -> BLOWER MOTOR -> Blower Motor Test -> Blower Resistor Assembly Test -> Blower Switch Test -> BONNEVILLE, 88 & 98 -> CAPRICE, CUSTOM CRUISER & ROADMASTER -> CAVALIER & SUNBIRD -> CENTURY & CUTLASS CIERA -> COMPRESSOR -> CORVETTE -> CUTLASS SUPREME, GRAND PRIX & LUMINA -> High Blower Relay Test -> Isolation Tests -> LEMANS -> Mode Selector Test (Cavalier) -> Mode Selector Test (Sunbird) -> STORM -> Symptom Table -> Test A: Blower Motor -> Test A: ECM Compressor Control -> Test B: A/C Compressor Clutch Test -> Test B: Blower High Speed Relay -> Test B: Blower Motor Relay -> Test C: A/C Compressor Function Control Test -> Test C: Blower Resistors -> Test D: A/C Control Relay -> Test D: Blower Switch Test -> Test E: A/C Mode Selector -> Test E: Control Relay Jumper
Vehicle: 1992 Cadillac Eldorado 4.9 V8 GAS

COMPRESSOR

1992 CAMARO & FIREBIRD
Isolation Tests

Refer to Figs. and , for A/C compressor isolation tests.

Test A: ECM Compressor Control

Refer to Figs. through , for ECM compressor control tests.

Test B: A/C Compressor Clutch Test

Refer to Fig. , for A/C compressor clutch test.

Test C: A/C Compressor Function Control Test

Perform the following test with the ignition switch in the RUN position (engine not running), A/C mode selector at NORM, and outside temperature above 60°F:

    ...

CLICK HERE TO GET FULL ACCESS TO 1992 Cadillac Eldorado A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 1992 Cadillac Eldorado AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 Cadillac Eldorado cars and light trucks from 1990+

Cooling Fans -> Passenger Cars Except Saturn -> ACHIEVA -> 2.3L Engine -> 3.3L Engine -> COMPONENT REPLACEMENT -> Coolant Fan Does Not Turn Off w/Engine Coolant Cool, A/C Mode Selector Off And Ignition Switch In Run -> Coolant Fan Does Not Turn On -> COOLANT FAN, REPLACE -> DESCRIPTION -> System Check -> System Diagnosis -> SYSTEM DIAGNOSIS & TESTING -> TROUBLESHOOTING
Vehicle: 1992 Cadillac Eldorado 4.9 V8 GAS

DESCRIPTION

The coolant fan is controlled by the engine control module (ECM) via the coolant fan relay. The ECM receives input signals from the coolant temperature sensor (CTS), vehicle speed sensor and the A/C mode selector. The ECM activates the coolant fan relay when the engine coolant temperature exceeds 227°F, the air conditioning is turned on or if the coolant temperature sensor fails when vehicle speed is below 35 mph by grounding circuit 535 or 536. When circuit 535 or 536 is grounded, the coolant fan relay energizes, applying battery voltage to the coolant fan. The ...

CLICK HERE TO GET FULL ACCESS TO 1992 Cadillac Eldorado A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 1992 Cadillac Eldorado AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 Cadillac Eldorado cars and light trucks from 1990+

Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Domestic Vehicles
Vehicle: 1992 Cadillac Eldorado 4.9 V8 GAS

[[table data]]

CLICK HERE TO GET FULL ACCESS TO 1992 Cadillac Eldorado A/C & HEATER SERVICE PROCEDURES

A/C & HEATER SERVICE PROCEDURES FOR 1992 Cadillac Eldorado AUTOMOBILES

Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1992 Cadillac Eldorado cars and light trucks from 1990+

Cooling Fans -> Passenger Cars Except Saturn -> CUTLASS CIERA & CUTLASS CRUISER -> 2.5L Engine -> 3.3L Engine -> COMPONENT REPLACEMENT -> Coolant Fan Does Not Turn Off With Engine Coolant Cool, A/C Off & Ignition Switch In Run Position -> Coolant Fan Does Not Turn On -> Coolant Fan, Replace -> DESCRIPTION -> System Check -> System Diagnosis -> SYSTEM DIAGNOSIS & TESTING -> TROUBLESHOOTING
Vehicle: 1992 Cadillac Eldorado 4.9 V8 GAS

DESCRIPTION

2.5L Engine

The coolant fan is turned on and off by the ECM based on inputs from the coolant temperature sensor, vehicle speed sensor and the A/C system. Battery voltage is applied at all times to terminal E of the coolant fan relay and when the ignition switch is in RUN position, battery voltage is applied to terminal C of the relay. The ECM energizes the coolant fan relay by grounding the dark green/white wire. The relay energizes and battery voltage is applied to the cooling fan. The ECM opens circuit 335 to de-energize the relay a...

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