COOLING FAN SYSTEM > Cooling Fan Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

INSPECT ECM (FANL AND FANH 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 FUSE (ECU-IG NO. 1 FUSE VOLTAGE)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

INSPECT FAN NO. 1 RELAY

INSPECT FAN NO. 2 RELAY

INSPECT FAN NO. 3 RELAY

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

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1 RELAY)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1 RELAY VOLTAGE)

CHECK HARNESS AND CONNECTOR (IG1 NO. 1 RELAY - BODY GROUND)

CHECK HARNESS AND CONNECTOR (IG1 NO. 1 RELAY - POWER MANAGEMENT CONTROL ECU)