Engine Cooling Fan - V6: Other Dodge Stratus I

AVENGER & SEBRING

On models without A/C, single fan is turned on in accordance with coolant temperature. On models with A/C, dual 2-speed cooling fans operate simultaneously and are turned on when coolant temperature becomes excessive or A/C head pressure indicates A/C operation. On models with automatic transmission, a fluid thermistor may have some influence on fan operation.

PCM controls fan operation through a radiator fan relay. Fan(s) should not operate during engine cranking. Fans should always operate when A/C clutch is engaged and engine is running.

CIRRUS, SEBRING CONVERTIBLE & STRATUS

On all models, dual 2-speed cooling fans operate simultaneously and are turned on when coolant temperature becomes excessive or A/C head pressure indicates A/C operation. On Cirrus, Sebring Convertible and Stratus with automatic transaxle, a fluid thermistor may have some influence on fan operation. See COOLING FAN OPERATING TEMPERATURE (CIRRUS, SEBRING CONVERTIBLE & STRATUS) table.

Without A/C operation, cooling fans turn on or off when coolant temperature sensor signals PCM that coolant temperature has reached a specified temperature. See COOLING FAN OPERATING TEMPERATURE (CIRRUS, SEBRING CONVERTIBLE & STRATUS) table. Regardless of vehicle speed, fans will turn off when coolant temperature drops.

COOLING FAN 2.5L (CIRRUS, SEBRING CONVERTIBLE & STRATUS)

CONCORDE, INTREPID, LHS & VISION

The dual cooling fans operate simultaneously and are turned on whenever coolant temperature sensor or A/C pressure transducer (on compressor discharge line) sends a signal to the Powertrain Control Module (PCM). The PCM turns on the fans through the low and high speed fan motor relays.

When A/C is not operating, cooling fan operation is controlled by coolant temperature sensor signal to PCM. Signal indicates when coolant has reached a specified temperature. See COOLING FAN OPERATING TEMPERATURE (CONCORDE, INTREPID, LHS & VISION) table. Fans will operate independently of coolant temperature when A/C pressure signal reaches a predetermined level. Fans will not operate during engine cranking, regardless of coolant temperature.

COOLING FAN OPERATING TEMPERATURE (CONCORDE, INTREPID, LHS & VISION)

COOLING FAN MOTOR

Note. If motor is noticeably overheated, system voltage may be too high. Check charging system.

Disconnect cooling fan harness connector. Using jumper wires, connect battery voltage and ground to cooling fan motor terminals. (Scheme 19) If cooling fan operates, repair wire harness between fan relay(s) and cooling fan motor. See WIRING DIAGRAMS. If cooling fan does not operate, replace cooling fan motor.

Scheme 19

Scheme 20

Disconnect cooling fan motor harness connector. Observe correct polarity. Connect battery voltage to fan motor harness connector terminals. (Scheme 21) If cooling fan motor fails to operate, replace fan motor.

Scheme 21

1. Disconnect electric fan motor harness connector. Connect 12-volt battery negative lead to Black wire terminal of fan motor connector terminal and battery positive lead to Tan wire terminal of fan motor connector terminal. Fan motor should operate at low speed.
2. Connect battery positive lead to Yellow wire terminal of fan motor connector terminal. Motor should operate at high speed. Replace fan motor if it fails to operate properly.

RADIATOR/CONDENSER FAN RELAYS & PCM

Note. On some models, if PCM detects problem with cooling fan system, a related DTC will set. For additional information on DTC and trouble shooting using DRB scan tool, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE section below.

1. «TESTS W/CODES - 2.5L»(ref-24762) (for Sebring Coupe & Avenger)
2. «TESTS W/CODES - 2.5L»(ref-24776) (for Sebring Convertible)
3. «TESTS W/CODES - 2.5L»(ref-24768) (for Cirrus & Stratus)
4. «TESTS W/CODES - 3.5L»(ref-24772) (for 3.5L LHS)
5. «TESTS W/CODES - 3.3L»(ref-24770) (for Concorde, Intrepid & Vision)
6. «TESTS W/CODES - 3.5L»(ref-24772) (for Concorde, Intrepid & Vision) NOTE: Condenser fan relays may be externally different from radiator fan relays, but terminal location/position and testing procedures are identical.

Scheme 22

Scheme 23

1. Warm engine to normal operating temperature. Cycle A/C switch on and off. Listen for clicking sound at fan relays in Power Distribution Center (PDC), in front of left strut tower. (Scheme 22)or (Scheme 23).
2. If clicking sound is heard, relay is okay. If no clicking sound is heard, install known-good relay(s), and cycle A/C switch again. If clicking sound is still not heard, check circuit to relay using next step.
3. Remove radiator and condenser fan relays. Relays are located in Power Distribution Center (PDC), in front left strut tower.
4. Using DVOM, check continuity with and without battery power connected between terminals No. 1 and 3 of each relay. (Scheme 23) Ensure continuity exists between terminals No. 1 and 3 without battery power connected. Ensure continuity exists between terminals No. 4 and 5 with battery power connected. If continuity is not as specified, replace appropriate relay. CAUTION: Check cooling fan motor operation before checking fan relay and PCM. Ensure PCM is securely grounded.

Scheme 24

Scheme 25

1. Turn ignition on. Check voltage at Red/Light Green wire of low speed and high speed radiator fan relays. Radiator fan relays are located in Power Distribution Center (PDC). (Scheme 24) A label identifying components and circuits is located under PDC cover.
2. If battery voltage is present, go to next step. If battery voltage is not present, check for open or shorted Red/Light Green wire. Check for an open fuse No. 19 (fuse No. 17 on Sebring Convertible), located in PDC.
3. Connect jumper wire between Red/Light Green wire and Dark Green/Light Green wire of low speed radiator fan relay. Move jumper wire to Red/Light Green wire and Yellow/Violet wire (Yellow/Red wire on Sebring Convertible) of high speed radiator fan relay. If fan operates at low and high speeds, go to next step. If fan fails to operate, check for open or shorted Dark Green/Light Green wire and/or Yellow/Violet wire (Yellow/Red wire on Sebring Convertible) between radiator fan relay and fan motor connector.
4. Warm engine to normal operating temperature. Check for loose connections at fan motor and fan motor relays. If all connections are okay, check for Diagnostic Trouble Codes (DTCs). If PCM detects a problem with cooling fans, a DTC will set. NOTE: For additional information on DTCs and trouble shooting using DRB scan tool, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE section. «TESTS W/CODES - 2.5L»(ref-24762) (for Sebring Coupe & Avenger) «TESTS W/CODES - 3.5L»(ref-24772) (for 3.5L LHS) «TESTS W/CODES - 2.5L»(ref-24776) (for Sebring Convertible) «TESTS W/CODES - 2.5L»(ref-24768) (for Cirrus & Stratus) «TESTS W/CODES - 2.5L»(ref-24776) (for Sebring Convertible)
5. If DTC indicates RAD FAN RELAY CIRCUIT, turn ignition switch to RUN position. Check voltage at Light Green/Black wire of low and high speed fan relay connectors. If battery voltage is present, go to next step. If voltage is 0-1 volt, go to step 7).
6. Turn ignition off. Disconnect PCM harness connector. PCM is located on left front corner of engine compartment. Turn ignition on. Check voltage between PCM harness connector terminals No. 55 (Dark Blue/Tan wire) and No. 69 (Dark Blue/Pink wire). (Scheme 25) If battery voltage is present, and female terminals are not damaged, replace PCM and retest system. If voltage is not present, repair open or shorted Dark Blue/Tan wire or Dark Blue/Pink wire from the low or high speed radiator fan relay to PCM.
7. Turn ignition off. Disconnect PCM harness connector. PCM is located on left front corner of engine compartment. Turn ignition on. Check voltage at Light Green/Black wire of low and high speed fan relay connectors. If battery voltage is present, replace PCM. If voltage reading is 0-1 volt, go to next step.
8. Turn ignition on. Check voltage at Dark Blue/Tan wire of low speed radiator fan relay connector and Dark Blue/Pink wire of high speed radiator fan relay connector. If battery voltage is present, repair open or shorted Dark Blue/Tan wire or Dark Blue/Pink wire between fan relay and PCM. Turn ignition off, then reconnect PCM harness connector. Retest system. CAUTION: Check electric fan motor operation before checking fan relay. Ensure PCM is securely grounded.

Scheme 26

Scheme 27

1. Check for loose connections at fan motor and fan motor relay. If all connections are okay, check for Diagnostic Trouble Codes (DTCs). If DTCs are not present, go to next step. NOTE: DTCs are obtained by using DRB scan tool. For additional information, see appropriate TESTS W/CODES article in ENGINE PERFORMANCE section below. «TESTS W/CODES - 3.5L»(ref-24772) (for 3.5L LHS) «TESTS W/CODES - 3.3L»(ref-24770) (for Concorde, Intrepid & Vision) «TESTS W/CODES - 3.5L»(ref-24772) (for Concorde, Intrepid & Vision)
2. With ignition on and engine at normal operating temperature, check for battery voltage on both sides of cooling fan relay fuse. Cooling fan fuse and high and low cooling fan relays are located in fuse/relay block, in front of left strut tower. (Scheme 26)
3. If battery voltage is not present, repair shorted or open Red/Light Green wire circuit. If battery voltage is present, remove low speed or high speed fan motor relay. Using ohmmeter, ensure continuity exists between terminals No. 1 and 3. (Scheme 27) If continuity does not exist, replace relay.
4. Connect battery voltage to terminal No. 1 and battery negative to terminal No. 3. (Scheme 27) Check continuity between relay terminals No. 2 and 4. Continuity should not exist with battery voltage disconnected. Replace relay is continuity is not specified.

Electric Cooling Fan Wiring Diagram (Avenger & Sebring - 2.5L). Scheme 28

Electric Cooling Fan Wiring Diagram (Cirrus, Sebring Convertible & Stratus). Scheme 29

Electric Cooling Fan Wiring Diagram (Concorde, Intrepid, LHS & Vision). Scheme 30