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Symptom: *CHECKING THE ELECTRIC RADIATOR FAN OPERATION POSSIBLE CAUSES ACTUATE THE RADIATOR FAN RELAY WITH THE DRB CHECK FOR RADIATOR FAN RELAY CONTROL FAULT FUSED B+ CIRCUIT OPEN POWERTRAIN CONTROL MODULE - RELAY CONTROL OPEN RADIATOR FAN - SHORTED RADIATOR FAN RELAY OUTPUT CIRCUIT SHORTED TO GROUND RADIATOR FAN RELAY OUTPUT CIRCUIT OPEN RADIATOR FAN GROUND CIRCUIT OPEN RADIATOR FAN - OPEN TEST ACTION APPLICABILITY 1 Turn the ignition on. All Yes → The test is complete. No → 2 Turn the ignition off. All Yes → Replace and program the Powertrain Control Module in accor- No → 3 Turn the ignition off. All Yes → No → Repair the Fused B+ circuit for an open. 240 DRIVEABILITY - DIESEL |