Speedometer - Revised Test A (Inaccurate)

NUMBER: 93-U-22

CORP.REF.NO: 208122

DATE: February 1993

SECTION: 8A, 8C

SUBJECT:
ELECTRICAL DIAGNOSIS VEHICLE SPEED SENSOR - SPEEDOMETER IS INACCURATE

MODELS/YEARS:
1991-93 EIGHTY EIGHT AND NINETY EIGHT

Diagnosis for Test A "SPEEDOMETER IS INACCURATE" symptom found in the below mentioned service manuals has been revised to avoid any confusion and misdiagnosis.

The following revised text in the 1991-93 Eighty Eight/Ninety Eight Service Manuals, Page 8A-33-1, should replace the following given text for proper system diagnosis.

THE TEXT WHICH STATES:

If scan tool and speedometer do not display the same speed, replace the instrument cluster (see Section 8C).

SHOULD BE REPLACED WITH:

If scan tool and speedometer do not display the same speed, do test B.