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Home >> Suzuki >> 2009 >> Equator Base, 4D Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (VQ40DE) - (5 Of 5) >> Cooling Fan Circuit Check >> Diagnosis Procedure
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Diagnosis Procedure

DIAGNOSIS PROCEDURE

Step Action YES NO
CHECK IPDM E/R GROUND CIRCUIT 
  1. Turn ignition switch OFF.
  2. Disconnect IPDM E/R harness connectors E122, E124.
  3. Check harness continuity between IPDM E/R terminals 38, 59 and ground.

    Refer to WIRING DIAGRAM .

    Continuity should exist. 

  4. Also check harness for short to power.

OK or NG 
GO TO 2. Repair open circuit or short to power in harness or connectors.
CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN AND SHORT 
  1. Disconnect cooling fan motor harness connector.
G06441668Courtesy of SUZUKI OF AMERICA CORP.

  1. 2. Check harness continuity between the following; cooling fan motor terminal 1 and IPDM E/R terminal 20, cooling fan motor terminal 2 and IPDM E/R terminal 24. Refer to WIRING DIAGRAM .

    Continuity should exist. 

  2. 3. Also check harness for short to ground and short to power.

OK or NG 
GO TO 3. Repair open circuit or short to ground or short to power in harness or connectors.
CHECK COOLING FAN MOTOR GROUND CIRCUIT FOR OPEN OR SHORT 
  1. Check harness continuity between the following; cooling fan motor terminal 3 and ground, cooling fan motor terminal 4 and ground. Refer to WIRING DIAGRAM .

    Continuity should exist. 

  2. Also check harness for short to power.

OK or NG 
GO TO 4. Repair open circuit or short to power in harness or connectors.
CHECK COOLING FAN MOTOR 
Refer to [COOLING FAN CIRCUIT CHECK ].
OK or NG 
GO TO 5. Replace cooling fan motor.
CHECK INTERMITTENT INCIDENT 
Perform [SERVICE INFORMATION FOR ELECTRICAL INCIDENT: INTERMITTENT INCIDENT ]
OK or NG 
INSPECTION END Repair or replace harness or connector.