P1489 JEEP - High Speed Radiator Fan Control Relay Condition
- Faulty Radiator Fan Control Relay
- Radiator Fan Control Relay harness is open or shorted
- Radiator Fan Control Relay circuit poor electrical connection
When is the code detected?The Engine Control Module (ECM) has detected an open or shorted condition in the radiator fan relay circuit
- Engine Light ON (or Service Engine Soon Warning Light)
P1489 Jeep DescriptionWith the key on or engine running, system voltage over 10v, the Powertrain Control Module (PCM) detects a shorted or open condition in the high speed Radiator Fan Relay circuit for 3 seconds. Test the fan relay resistance (it should be 30-70 ohms). Refer to code repair chart in other manuals or media.
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