Grand Cherokee 2WD V8-4.7L VIN J (2004)
Hydraulic Cooling Fan Solenoid Valve: Customer Interest
Cooling System - Intermittent MIL ON/DTC P1499 Set
NUMBER: 07-005-02
GROUP: Cooling
DATE: Dec. 16, 2002
THIS BULLETIN ES BEING PROVIDED IN ADVANCE. DO NOT ORDER PARTS OR PERFORM ANY ACTIONS RELATED TO THIS
BULLETIN UNTIL JAN. 20, 2003.
SUBJECT:
Newly Released Solenoid For DTC P1499 - Hydraulic Fan Solenoid Circuit Fault
OVERVIEW:
This bulletin involves the replacement of the hydraulic fan solenoid instead of the complete cooling fan module.
MODELS:
2001 - 2004
(WJ)
Grand Cherokee
2001 - 2004
(WG)
Grand Cherokee (International Markets)
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A HYDRAULIC COOLING SYSTEM (SALES CODE NMH).
SYMPTOM/CONDITION:
The customer may experience a MIL illumination due to DTC P1499 - Hydraulic Fan Solenoid Circuit. The MIL illumination may occur intermittently.
DIAGNOSIS:
1.
Proceed with this bulletin only if the cause of the MIL illumination is due to DTC P1499 - Hydraulic Fan Solenoid Circuit Fault.
2.
Refer to the 2002 or later Jeep Grand Cherokee - Powertrain Diagnostic Procedures Manual to properly diagnose DTC P1499.
3.
If the diagnostic procedures determine that the hydraulic fan solenoid is at fault, then perform the Repair Procedure.
NOTE:
THE HYDRAULIC FAN SOLENOID LISTED BELOW HAS BEEN RELEASED AS A SEPARATE ITEM. THE COMPLETE HYDRAULIC
FAN MODULE NO LONGER REQUIRES REPLACEMENT WHEN ONLY THE SOLENOID IS FOUND TO BE AT FAULT.
PARTS REQUIRED:
EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1.
With the engine off, disconnect the negative battery cable from the negative battery terminal.
2.
Raise the vehicle on a suitable lift.
3.
Clean the immediate area around the hydraulic fan solenoid of any debris.
