ECM - Code 34 MAP Sensor Set
Number: 82-157Section: 6E (VIt)
Date: May, 1984
Subject: CODE 34 DIAGNOSTIC INFORMATION
Model and Year: 1982 CAVALIER, CHEVETTE CITATION AND CAMARO
TO: ALL CHEVROLET DEALERS
This information applies to Federal and California 1982 Cavaliers and California only 1982 Chevettes with manual transmissions and 1982 Citation and Camaro with manual transmission and 2.8L V6 engines (engine Code X in Citation and Code 1 in Camaro).
When diagnosing a vehicle exhibiting a Code 34 (map sensor), the diagnostic charts in Section 6E of the service manual should be followed. If the diagnostic chart indicates the map sensor is functioning properly, a new PROM should be installed as shown on the attached chart. This PROM has been calibrated to prevent a Code 34 from being set when the map sensor is functioning properly.
NOTICE: The ECM part number of the 1982 Cavalier will have to be known in order to select the proper replacement PROM. This number is located in the upper right hand corner of the ECM identification label. This label is located on the ECM, next to the PROM access window.
SERVICE PROM APPLICATION CHART
Service
Model PROM
ECM Part Number* Package
*See Notes A and B
at End of Chart
1982 Camaro (1FA00)
2.8L V6, Federal Emission System 16025371 (A) 1225916
1982 Chevette (1TA00)
1.6L L4, California Emission System 16017171 (A) 1225566
1982 Citation (1XA00)
2.8L V6, Federal Emission System 16017191 (A) 1225767
1982 Cavalier
All models with 4:10 Axle 16026231 (A) 1225752
Station Wagon (1JD35)
- With A/C 16020521 (A) 1225754
16023801 (B) 1226718
- Without A/C 16018211 (B) 1226718
16020531 (A) 1225755
16023811 (B) 1226719
16018251 (B) 1226719
Two Door Notchback (1JD27)
- With A/C 16020381 (A) 1225757
16023761 (B) 1226716
- Without A/C 16018161 (B) 1226716
^ Federal w/Manual Steering 16020541 (A) 1225756
^ Federal w/Power Steering 16020391 (A) 1225589
^ All California 16020391 (A) 1225589
SERVICE PROM APPLICATION CHART
Service
PROM
Model ECM Part Number* Package
*See Notes A and B at End of Chart
1982 Cavalier (Continued)
Two Door Hatchback (1JD77)
- With A/C
16020381 (A) 1225757
16023761 (B) 1226716
- Without A/C 16018161 (B) 1226716
^ With Power Steering 16020391 (A) 1225589
16023771 (B) 1226717
^ With Manual Steering 16018201 (B) 1226717
16023821 (B) 1226720
Four Door Notchback (1JD69) 16018101 (B) 1226720
- With A/C
16020381 (A) 1225757
16023761 (B) 1226716
- Without A/C (16018161) (B) 1226716
^ With Power Steering 16020391 (A) 1225589
16023771 (B) 1226717
^ With Manual Steering 16018201 (B) 1226717
16023821 (B) 1226720
16018101 (B) 1226720
NOTE A: This ECM may have been replaced by service ECM, P/N 16019710 (1225500).
NOTE B: This ECM may have been Creplaced by Service ECM, P/N 16018000 (1225330).