ECM - MIL ON/False Code 43 Set

Bulletin No. T 87-70
File in Group 6E
Number 41
Corp. Ref. No. 736505
Date Feb. '87

SUBJECT: FALSE CODE 43

MODELS AFFECTED: 1987 CIMARRONS

Some 1987 Cimarrons may experience a condition of an intermittent "Service Engine Soon" light and a false Code 43 setting. This condition will occur at part throttle between 3400 and 4400 RPM.

This condition may be caused by an ECM Mem-Cal with a broadcast code that is listed in the "Previous Broadcast Code" column in the chart below.

To repair this condition, replace the Mem-Cal with the appropriate service part number listed below.

Service Service Previous
Emission Part Mem-Cal Broadcast Broadcast
System Transaxle Number I.D. * Code+ Code

FED Auto 16073192 3193 ADRY ADDB
FED Man 16073212 3213 ADSC ADDH
CAL Auto 16073196 3197 ADRZ ADDC
CAL Man 16073216 3217 ADSD ADDJ

* Mem-Cal I.D. can be read with a scan tool connected to the ALDL link.

+ Broadcast Code can be seen through the access hole on the top side of the Mem-Cal cover.

If replacing the Mem-Cal does not repair the condition, proceed with normal diagnosis for Code 43 as described in Section 6E3 of the 1987 Cimarron Service Information Manual.

For warranty purposes, use Labor Operation J6364 at .6 hours when replacing a Mem-Cal.