Tercel Sedan 2-Door L4-1456cc 1.5L SOHC (3E-E) (1991)
EGR Valve Position Sensor: Technical Service Bulletins
Engine Control - False Code 71, New ECM
REF.: ENGINE
NO.: EN91-010
DATE:
AUGUST 2,1991
MODEL:
TERCEL
ENGINE CONTROL COMPUTER
To prevent false "check engine light " (diagnostic code 71) indication, the ECU programming has been changed.
DIAGNOSIS PROCEDURE:
When check engine light (diagnostic code 71) condition is encountered, first verify the EGR system is operating correctly by following check procedures
outlined in the 1991 Tercel Repair Manual No. RM195U under the following sections:
1.
Emission Control System (EC10-14)
2.
EFI System (F170-73)
If no problems are found with the EGR system, replace the ECU.
PRODUCTION EFFECTIVE:
VIN
DATE
From
JT2EL4***MOO93581
March 1991
NOTE:
Production effective breakpoints are for reference only. The Part Number on the ECU in the vehicle should be verified in all instances.
PART NUMBER INFORMATI0N:
PREVIOUS P/N
NEW PIN
YEAR
SPEC.
TRANS
PART NAME
89661-16080
89661-16081
1991
CAL.
M/TM
ECU