Electric Cooling Fan: Testing

Cooling Fan With Integrated Control Unit on the Motronic ME 2.7 and 2.7.1 is controlled by the ECM. Cooling fan module will set a Diagnostic Trouble Code (DTC). Engine Coolant Temperature Sensor (ECT) faults are also monitored by the ECM and will set a DTC.

To check for and erase stored diagnostic trouble codes with scan tool. See RETRIEVING & ERASING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. For more information on the self-diagnostic system, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.