Radiator Fan Relay Output
NOTE:
For circuit identification and wiring diagram, see WIRING DIAGRAMS . After each repair procedure has been completed, reconnect all components. Perform appropriate POWERTRAIN VERIFICATION TEST 2 to ensure system is functioning properly. See the following:
- On 2.0L, perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TEST in SELF-DIAGNOSTICS - NEON & SX (CANADIAN) - 2.0L article.
- On 2.4L, perform POWERTRAIN VERIFICATION TEST VER-2 under VERIFICATION TEST in SELF-DIAGNOSTICS - SRT-4 - 2.4L article.
Possible Causes
- Radiator Fan Relay Operation
- Ground Circuit Open
- Radiator Fan Motor
- Fused B+ Circuit
- Radiator Fan Relay Output Circuit
- Radiator Fan Relay
Testing
- Turn the ignition on. With the DRBIII® scan tool, actuate the radiator fan relay. Is the radiator fan actuating? If yes, the radiator fan system is operating properly at this time. If no, go to next step.
- Turn the ignition off. Disconnect the radiator fan harness connector. Measure the resistance between the ground circuit in the radiator fan harness connector to ground. See Fig 1 or Fig 2 . Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the ground circuit for an open.
- Disconnect the radiator fan harness connector. Turn the ignition on. With the DRBIII® scan tool, actuate the radiator fan relay. Measure the voltage of the radiator fan relay output circuit in the radiator fan harness connector. See Fig 1 or Fig 2 . Is the voltage above 11.0 volts? If yes, replace the radiator fan motor. If no, go to next step.
- Turn the ignition off. Remove the radiator fan relay from the Power Distribution Center (PDC). See Figure for 2.0L or Figure for 2.4L. On all models, PDC is located in engine compartment. See Figure for 2.0L or Figure for 2.4L. Using a 12-volt test light connected to ground, probe the fused B+ circuit in the PDC. Does the test light illuminate brightly? If yes, go to next step. if no, repair the fused B+ circuit. Inspect fuses and replace as necessary.
- Turn the ignition off. Remove the radiator fan relay from the PDC. Disconnect the radiator fan harness connector. Measure the resistance of the radiator fan relay output circuit between the PDC and the radiator fan harness connector. Is the resistance below 5.0 ohms? If yes, replace the radiator fan relay. If no, repair the radiator fan relay output circuit for an open.