Fuel Pressure Regulator Vacuum Relief System - Changes

Classification:
AM94-003

Section
Amendments

Model:
1994 J30 (JY32)

Reference
TECHNICAL BULLETIN ITB94-O59

Date
November 11, 1994

1994 J3O CHANGES TO THE FUEL PRESSURE REGULATOR
VACUUM RELIEF SYSTEM

APPLIED VIN JNKAY21DIRM11O359

The PRVR (Pressure Regulator Vacuum Relief) system has been changed on all J3O's produced after the above listed VIN as follows.

^ The PRVR control solenoid valve and fuel temperature sensor have been eliminated.
^ The Vacuum hose routing for the fuel pressure regulator has been changed.
^ The PRVR control of the ECM has been eliminated.
As a result, the following diagnostic procedures are not applicable for vehicles produced after the VIN shown above.

^ Diagnostic Procedure 12 (Page EF & EC-114)
FUEL TEMPERATURE SENSOR (Diagnostic trouble NO.42)

^ Diagnostic Procedure 33 (Page EF & EC 174)
PRVR CONTROL (Not self-diagnostic item)




Engine and Emission Control Overall System
(System Diagram)

Please paste the amended page in your copies of the 1994 J3O Service Manual.

PAGE NUMBER CORRECTION

EF & EC-8 Deletion of Pressure Regulator Vacuum Relief solenoid