A/T Control Module - Diagnostic Manual Supplement

9216chevy01

Number: 90-313-7A

Section: 7A

Date: August 1990

Corporate Bulletin No.: 037107


Subject: AUTOMATIC TRANSAXLE CONTROL MODULE DIAGNOSIS


Model and Year: 1990 PRIZM


TO: ALL CHEVROLET DEALERS

The following information should be used in addition to the diagnostic information already in A240E Automatic Transaxle General Information and On-Vehicle Service Section 7A- 2 of the 1990 GEO Prizm Service Manual Supplement. (ST 373-90 Supp.)














AUTOMATIC TRANSAXLE CONTROL MODULE DIAGNOSIS Figures 1 through 4

For Automatic Transaxle Control Module system diagnosis, see Automatic Transaxle Diagnostic Charts (Figures 1 through 4).














READING AUTOMATIC TRANSAXLE DIAGNOSTIC CODE

Figures 5 through 11





VOLTAGE READING AT A/T CONTROL MODULE CONNECTOR
CAVITIES