COOLING FAN SYSTEM > Cooling Fan Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE ELECTRIC COOLING FAN)

INSPECT ENGINE ROOM RELAY BLOCK (FAN NO. 1, FAN NO. 2 OR FAN NO. 3 RELAY VOLTAGE)

INSPECT ENGINE ROOM RELAY BLOCK (FAN NO. 1 RELAY AND FAN NO. 3 RELAY VOLTAGE)

INSPECT FAN NO. 1 RELAY

INSPECT FAN NO. 2 RELAY

INSPECT FAN NO. 3 RELAY

CHECK HARNESS AND CONNECTOR (FAN NO. 2 RELAY - BODY GROUND)

INSPECT COOLING FAN MOTOR

CHECK HARNESS AND CONNECTOR (COOLING FAN MOTOR - BODY GROUND)

CHECK HARNESS AND CONNECTOR (COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK)

INSPECT NO. 2 COOLING FAN MOTOR

CHECK HARNESS AND CONNECTOR (NO. 2 COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK)

INSPECT ENGINE ROOM RELAY BLOCK (FAN NO. 1 RELAY - FAN NO. 2 RELAY)

CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK - ECM)

CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK - NO. 2 INTEGRATION RELAY)

INSPECT FAN NO. 1 RELAY

INSPECT FAN NO. 3 RELAY

CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK - ECM)

CHECK HARNESS AND CONNECTOR (COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK)

CHECK HARNESS AND CONNECTOR (NO. 2 COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK)