Motor Parte 3

2000-04 ENGINE COOLING

Electric Cooling Fans - S40 & V40

APPLICATION

2004 S40

The S40 information in this article applies up to early production 2004 cars. In mid-2004, Volvo introduced a redesigned S40. For early production cars, the 4th character of the VIN is V. For late production cars, the 4th character of the VIN is M. Early production S40 models are equipped with 1.9L, 4-cylinder engines. Late production S40 models are equipped with 5-cylinder engines.

DESCRIPTION & OPERATION

ELECTRIC COOLING FAN

The engine has a large cooling system with an electronically controlled engine cooling fan. The fan draws air through the radiator from behind the radiator. The engine cooling fan operates in two stages depending on Engine Coolant Temperature (ECT) signal to ECM. The fan is controlled electronically via two fan relays from the ECM.

The vehicle is also equipped with a condenser fan. This fan is actuated by the A/C condenser fan relay via the ECM. The A/C pressure sensor (linear) provides information using a linear signal about any pressure changes on the high-pressure side. Depending on the pressure the ECM can activate the A/C condenser fan relay.

COMPONENT LOCATIONS

COMPONENT LOCATIONS Component Location

A/C Pressure SensorLeft Front Of Engine Compartment, Top Of A/C

Accumulator

Cooling Fan Relay (2000, Low Speed)Engine Compartment Fuse/Relay Box (Relay No.

2/11). See Fig. 1 .

Cooling Fan Relay (2000, High Speed)Engine Compartment Fuse/Relay Box (Relay No.

2/12). See Fig. 1 .Cooling Fan Relay (2001-04, Low Speed) Engine Compartment Fuse/Relay Box (Relay No. 1).

See Fig. 2 .Cooling Fan Relay (2001-04, High Speed) Engine Compartment Fuse/Relay Box (Relay No. 4).

See Fig. 2 .

Condenser Fan Relay (2000)Passenger Compartment Relay Box (Relay No.

2/41). See Fig. 1 .Condenser Fan Relay (2001-04) Engine Compartment Fuse/Relay Box (Relay No. 3).

See Fig. 2 .Cooling Fan Circuit Ground Point Left Front Of Engine Compartment. See Fig. 3 .Condenser Fan Circuit Ground Point Right Front Of Engine Compartment. See Fig. 4 .ECM Behind Center Console. See Fig. 5 .

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2000-04 ENGINE COOLING Electric Cooling Fans - S40 & V40

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jueves, 02 de julio de 2009 19:07:11 Page 1 2005 Mitchell Repair Information Company, LLC.

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Fig. 1: Locating Engine Compartment Fuse/Relay Box (2000) Courtesy of VOLVO CARS OF NORTH AMERICA.

Engine Coolant Temperature (ECT) Sensor Front Of Engine, Near Thermostat Housing

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Fig. 2: Locating Engine Compartment Fuse/Relay Box (2001-04) Courtesy of VOLVO CARS OF NORTH AMERICA.

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Fig. 3: Locating Cooling Fan Circuit Ground Point Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig. 4: Locating Condenser Fan Circuit Ground Point Courtesy of VOLVO CARS OF NORTH AMERICA.

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Fig. 5: Locating ECM Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig. 6: Identifying ECM Terminals Courtesy of VOLVO CARS OF NORTH AMERICA.

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SELF-DIAGNOSTIC SYSTEM

ELECTRIC COOLING FAN

The electric cooling fan and A/C condenser fan relays are controlled by the ECM. Relays will set a DTC. Engine Coolant Temperature Sensor (ECT) and A/C pressure sensor are also monitored by the ECM and will set DTCs.

For more information on the self-diagnostic system, see appropriate SELF-DIAGNOSTIC article in ENGINE PERFORMANCE.

COMPONENT TESTS

A/C PRESSURE SENSOR

This is a 3-wire sensor. Pin No. 1 is signal ground to ECM pin No. 77. Pin No. 3 is 5 volt reference from ECM pin No. 74. Pin No. 2 is A/C pressure signal to ECM pin No. 14. This signal should be about 0.9 V with the A/C off. With A/C on, the signal to the ECM is about 1.4-1.8 V.

CONDENSER FAN & ENGINE COOLING FAN LOW SPEED RELAYS

Resistance between relay terminals No. 1 and No. 2 should be about 75-105 ohms at 68F (20C). If not, replace relay. See Fig. 7 .

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Fig. 7: Identifying Relay Terminals (Condenser Fan & Low Speed Engine Fan) Courtesy of VOLVO CARS OF NORTH AMERICA.

ENGINE COOLING FAN HIGH SPEED RELAY

Resistance between relay terminals No. 1 and No. 2 should be about 75 ohms at 68F (20C). If not, replace relay. See Fig. 8 .

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Fig. 8: Identifying Relay Terminals (High Speed Engine Fan) Courtesy of VOLVO CARS OF NORTH AMERICA.

REMOVAL & INSTALLATION

COOLING FAN

Removal & Installation

1. Remove the front engine bay cover. Mark the EVAP hose and remove it from the canister purge valve. See Fig. 9 . Unplug the connector from the intake air temperature sensor on the charge air cooler (undo wiring from the shroud). Unplug the connector from the right side fan. Remove the two bolts at the top from the unit. Raise the car.

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Fig. 9: Locating EVAP Hoses, Canister Purge Valve & Intake Air Temperature Sensor Courtesy of VOLVO CARS OF NORTH AMERICA.

2. Remove both the engine splash guards from under engine. Remove the heat deflector plate. Remove the nuts for the engine pads. See Fig. 10 . Remove the front and rear screws. Remove the two screws from the engine pads. Lift the front-rear member down from the car.

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Fig. 10: Removing/Installing Front-Rear Member Courtesy of VOLVO CARS OF NORTH AMERICA.

3. Remove the connector fan at the left side. Move the EVAP hose out of the clamp. Remove the two bolts from underneath the charge air cooler hose. Move the complete fan unit downwards and move the hoses sidewards. See Fig. 11 .

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Fig. 11: Locating Cooling Fan Mounting Bolts & Connectors Courtesy of VOLVO CARS OF NORTH AMERICA.

4. To remove the fan blade and motor, remove the nut or clip. See Fig. 12 . Pull off the fan blade. Pull the cable out of the clamping and the connector. Remove the nuts or bolts and take the fan motor out.

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Fig. 12: Removing Fan Blade & Motor Courtesy of VOLVO CARS OF NORTH AMERICA.

5. Install the fan motor and tighten the bolt or nut to 89 INCH lbs. (10 N.m). Route the cables and fit the connectors. Install the fan blade and secure it with the clip or nut to 89 INCH lbs. (10 N.m). Route the wiring and fit the connectors.

6. Install the fan motor assembly in the car. Tighten the mounting bolt or nut to 89 INCH lbs. (10 N.m). Route the cables and fit the connectors. Install the fan blade and secure it with the clip or nut to 89 INCH lbs. (10 N.m). Route the wiring and fit the connectors.

NOTE: Position the rubber elements in the correct positions. The position of the mounting points for the front-rear member must be the same at both the front and the rear.

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Fig. 13: Installing Front-Rear Member Courtesy of VOLVO CARS OF NORTH AMERICA.

7. From underneath, install the front-rear member. Install heat shield. Install the front-rear member. Insert the two screws (B) through the engine pads. See Fig. 13 . Tighten the two screws. Install the front and rear engine screws (A). Tighten bolt screws to 51 ft. lbs. (69 N.m). Slacken off the screw (B) for the front engine pad. First tighten the screw for the rear engine pad to 41 ft. lbs. (55 N.m). Then tighten the screw for the front engine pad to 41 ft. lbs. (55 N.m).

8. Install Both engine splash guards. Tighten and fit parts from the top. Position the holder and fit the two fan mounting bolts to 89 INCH lbs. (10 N.m). Install the EVAP canister purge valve and fit the connector. Connect the fan connectors. Tighten the cables and tie up. Connect the cable of the intake air temperature sensor. Check the function and install the front engine-bay cover.

WIRING DIAGRAMS

2000

See S40 AIR CONDITIONING or V40 AIR CONDITIONING in SYSTEM WIRING DIAGRAMS in ELECTRICAL.

2001

See S40 AIR CONDITIONING or V40 AIR CONDITIONING in SYSTEM WIRING DIAGRAMS in

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ELECTRICAL.

2002


2003


2004


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Motor Parte 3

Documents

Transcript of Motor Parte 3