Initial Inspection and Diagnostic Overview
Radiator Cooling Fan Control System CheckWiring Diagram
Troubleshooting
WARNING:
Keep hands, tools, and clothing away from radiator cooling fan to prevent personal injury. This fan is driven by electric motor that can turn on whether or not the engine is running. The fan motor can start automatically in response to ECT sensor signal if ignition switch is at "ON" position.
NOTE:
^ Before beginning troubleshooting, be sure to read Precautions for ECM Circuit Inspection:J24B.
^ When measuring circuit voltage, resistance and/or pulse signal of ECM, connect the special tool between ECM and ECM connectors.
Steps 1-4:
Steps 4-7:
Steps 8-10:
Steps 10-12:
