A/C - Poor Performance

Information IB03-12-S001

Diagnosis Poor A/C Performance A/C Stops Blowing Cold A/C Cycles ON and OFF

ISSUE DATE: JULY, 2003

Affected Vehicles
2003 Isuzu Ascender (US) with automatic or manual HVAC auxiliary temperature control (RPO CJ2 or CJ3).

Service Information

Some vehicles may exhibit poor A/C performance due to an overcharged system. If the A/C system is overcharged, it may cause the A/C to stop blowing cold after extended idle or while driving in slow traffic at high ambient temperatures.

It has been found that the underhood label containing the A/C charge specification is incorrect.

The correct specification should read System Charge with Front and Rear -1.20 kg (2.65 lbs).





Use this new charge specification whenever the A/C system is serviced. Install new label, P/N 8-15103-173-0.