Dodge Journey: Fan, cooling

Description

Cooling
Fig. 67: COOLING SYSTEM - OVERVIEW

  1. - WINDSHIELD WASHER RESERVOIR
  2. - UPPER SUPPORT
  3. - FAN SHROUD
  4. - FAN MOTOR
  5. - LOWER RADIATOR HOSE

The radiator fan module includes a support shroud (2) with an electrically driven motor (1) with a fan blade.

The radiator fan module is attached to the radiator.

Operation

The radiator fans are controlled by the Powertrain Control Module (PCM) which energizes a high speed or low speed fan relay. The electric motor drives the cooling fan to produce air flow across the radiator fins.

Diagnosis and Testing

RADIATOR FAN CONTROL

Fan control is accomplished three ways. The fan runs when the air conditioning pressure reaches a set pressure, refer to RADIATOR FAN OPERATION charts. In addition to this control, the fan is turned on by the temperature of the coolant which is sensed by the coolant temperature sensor which sends the message to the Powertrain Control Module (PCM). The PCM turns on the fan through a fan relay. On models equipped with automatic transmission, a transmission fluid thermistor may have some influences on fan operation.

The Powertrain Control Module (PCM) provides fan control for the following conditions:

  • The fan will not run during cranking until the engine starts no matter what the coolant temperature is.
  • Fan will run when the air conditioning clutch is engaged, and once set compressor head pressure is reached. See charts.
  • Fan will run according to the following information charts.

RADIATOR FAN OPERATION - 2.4L ENGINE

RADIATOR FAN OPERATION - 3.5L ENGINE

ELECTRIC FAN MOTOR TEST

Refer to the appropriate Diagnostic Service Information for testing the fan motor with the scan tool.

For wiring diagrams of the fan motor systems refer to WIRING HARNESS - SERVICE INFORMATION .

Removal

REMOVAL

Cooling
Fig. 68: COOLING SYSTEM - OVERVIEW

  1. - WINDSHIELD WASHER RESERVOIR
  2. - UPPER SUPPORT
  3. - FAN SHROUD
  4. - FAN MOTOR
  5. - LOWER RADIATOR HOSE

1. Disconnect and isolate negative battery cable.

2. Remove windshield washer reservoir.

3. Drain cooling system below level of the upper radiator hose.

4. Remove upper radiator hose at radiator and position aside.

5. Disconnect radiator fan electrical connector.

6. Remove fasteners and un-clip radiator fan assembly from radiator.

7. Remove radiator fan assembly by lifting upward.

Inspection

Inspect fan blades for damage. If the fan blades are warped, cracked, or otherwise damaged, it must be replaced with only the recommended replacement part for adequate strength, performance and safety.

Check fan motor operation. If fan motor is inoperative, and the fan blades are not damaged, the fan motor can be replaced separately.

Installation

Cooling
Fig. 69: COOLING SYSTEM - OVERVIEW

  1. - WINDSHIELD WASHER RESERVOIR
  2. - UPPER SUPPORT
  3. - FAN SHROUD
  4. - FAN MOTOR
  5. - LOWER RADIATOR HOSE

1. Position radiator fan into retaining clips.

2. Install mounting bolts. Tighten bolts to 35 N.m (25 ft. lbs.)

3. Connect radiator fan electrical connector.

4. Install windshield washer reservoir.

5. Install upper radiator hose at radiator.

6. Fill cooling system.

7. Connect negative battery cable.

    Draincock, radiator
    Removal DRAINCOCK  Fig. 65: DRAINCOCK & RADIATOR TANK CAUTION: Use of pliers on draincock is not recommended. Damage may occur to radiator or draincock. NOTE: It is no ...

    Heater, engine block
    Description 2.4L Fig. 70: BLOCK HEATER 2.4L ENGINE - RETAINING CLIP - BLOCK HEATER CAUTION: The power cord must be secured in its retainer clips, and not positioned so it co ...

    See also:

    TO OPEN AND CLOSE THE HOOD
    Two latches must be released to open the hood. 1. Pull the hood release lever located under the left side of the instrument panel. Hood Release 2. Outside of the vehicle, locate the safety latch ...

    Ring(s), piston
    Standard Procedure PISTON RING FITTING Fig. 200: CHECK GAP ON PISTON RINGS - FEELER GAUGE 1. Wipe cylinder bore clean. Insert ring and push down with piston to ensure it is square in bore ...

    Installation
    Fig. 101: Check For Stretched Bolts - STRETCHED BOLT - THREADS ARE NOT STRAIGHT ON LINE - THREADS ARE STRAIGHT ON LINE - UNSTRETCHED BOLT NOTE: The cylinder head bolts (4) are tighte ...

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