1997-2002 INFINITI QX4; ROOF CONSOLE TEMPERATURE DISPLAY READS INACCURATELY
If the ambient (outside) temperature display on a QX4 (JR50) vehicle reads inaccurately, particularly 7-10 °F too high (above the actual ambient temperature), use the service procedure in this bulletin to resolve the incident.
1998-2002 ALL INFINITI MODELS; DTC 1491 (VACUUM CUT VALVE BYPASS VALVE) DIAGNOSIS
This bulletin is an aid to the diagnostic procedures in the Service Manual for DTC P1491.
VARIOUS INFINITI MODELS; REVISED MAINTENANCE PROCEDURES
Starting with the 2002 model year, some vehicle maintenance procedures have been changed from similar procedures in past model years. The revisions have been integrated into the appropriate 2002 model year Service Manuals.
1997-2000 INFINITI QX4; FUEL INJECTOR CLEANING FOR VEHICLES WITH ROUGH IDLE, HESITATION OR MIL ON WITH DTC P0300-P0306 STORED
If after performing Service Manual diagnostic procedures for:
Rough idle,
Engine hesitation,
MIL On DTC P0300-P0306