05L6N -- 07
05 -- 14
--
DIAGNOSTICS
ECD SYSTEM (1ND -- TV)
COROLLA Supplement (RM1129E)
READING REGISTERED DATA
NOTICE:
S
When an injector is replaced, the injector ’s code number must be input into the ECM. When the
ECM is changed, all of the existing injector code numbers must be input into the new ECM.
S
An injector code number is unique. The 10 -- digit alphanumeric code imprinted on the head por -
tion of an injector is its code number. If an incorrect injector code number is input into the ECM,
the engine assembly may rattle or engine idling may become rough. In addition, engine failure
may occur and the life of the engine may be shortened.
1. After replacing the injector(s) with a new one(s), input the code number(s) of the injector(s) into
the ECM as follows:
(a) Input the c ode number(s), which is/are imprinted on the head portion(s) of the new injector(s), to the
intelligent tester II.
(b) Input the new code number(s) into the ECM using the tester
(c)
Turn the tester OFF and then turn the ignition switch to OFF.
(d)
Wait for at least 30 seconds.
(e)
Turn the ignition switch to ON and then turn the tester ON.
(f) Clear DTC P0603 stored in the ECM using the tester
2.
When you replace the ECM with a new one, input all the injectors’ compensation codes into the
new ECM as follows:
(a)
Prior to replacing the ECM, read and save each injector’s compensation code, stored in the original
ECM, using the intelligent tester II
(b)
After installing a new ECM, input the saved compensation codes into the new ECM using the tester
(c)
Turn the tester OFF and then turn the ignition switch to OFF.
(d)
Wait for at least 30 seconds.
(e)
Turn the ignition switch to ON and then turn the tester ON.
(f) Clear DTC P0603 stored in the ECM using the tester
HINT:
S
Each injector has different fuel injection characteristics. In order to optimize the fuel injections, the ECM
uses the compensation codes to balance the different fuel injections between each injector.
S
When you first turn the ignition switch to ON after replacing the ECM or an injector(s), DTC P0603 is
set. This is to inform you that an injector compensation code(s) is/are required to be registered. Manu-
ally clear the DTC upon completion of the compensation code registration.
To Alphabetical Index
To Sub Index
TOYOTA COROLLA REPAIR MANUAL SUPP 1129E