A/C - Revised On-Board Diagnosis

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Bulletin: 91-8-29

Date: May '91

Ref. No.: 91-162-8

Corp. Ref. No.: 108113


SUBJECT:
ELECTRICAL SYSTEMS MANUAL UPDATE - SECTION: CLIMATE CONTROL DUAL AIR CONDITIONING (CJ2) (REVISED ON-BOARD DIAGNOSIS PROCEDURE)

MODELS AFFECTED:
1991 PARK AVENUE/PARK AVENUE ULTRA


The On-Board Diagnostics for Dual Air Conditioning (CJ2) on page 384 of the 1991 Park Avenue/Park Avenue Ultra Electrical Systems Manual have been revised. In ECC OVERRIDE, the "Comments" portion of 119~ F: Update Ambient Temperature to Actual lacks the procedure for immediate updating of ambient temperature sensor input.

"Comments" following "Output Number 119~ F" should read: Push Warm or Cool Button for Immediate Update. Without performing this procedure, the sensor itself may take as long as six hours to update its input.

Please update your Electrical Systems Manual accordingly.