Fan Relays

CAUTION: Check electric fan motor operation before checking fan relay. Ensure PCM is securely grounded.

Check for loose connections on fan motor and at fan motor relay. If all connections are okay, fault codes must be checked. If no fault codes are present, go to next step.
NOTE: Fault codes are obtained by attaching Diagnostic Readout Box II (DRB-II) to diagnostic connector located near battery. For additional information, see appropriate ENGINE PERFORMANCE article in the ENGINE PERFORMANCE Section.
With ignition on and engine at normal operating temperature, check for battery voltage on both sides of cooling fan relay fuse. Cooling fan relay fuse and high and low speed fan relays are located in fuse/relay box in front of left strut tower. SeeFig 1 .
If battery voltage is not present, repair short or open in Red/Light Green wire circuit. If battery voltage is present, remove low speed or high speed fan motor relay. Using an ohmmeter, ensure continuity exists between terminals No. 1 and 3. See Fig 2 . If continuity does not exist, replace relay.

Connect ohmmeter to relay terminals No. 2 and 4. Check continuity with and without battery connected. See RADIATOR & CONDENSER FAN MOTOR RELAY CONTINUITY table. Replace relay if continuity is not as specified.

RADIATOR & CONDENSER FAN MOTOR RELAY CONTINUITY

Battery Connected ⁽¹⁾

Continuity

Yes

Continuity Between Terminals No. 2 & 4

No Continuity Between Terminals No. 2 & 4

⁽¹⁾	Positive battery terminal connected to terminal No. 1 and negative terminal connected to terminal No. 3. See Fig 2 .

Fig 1: Locating Radiator Fan Fuse & Relays

Courtesy of CHRYSLER CORP.

Fig 2: Locating Radiator Fan Relay Terminals

Courtesy of CHRYSLER CORP.