Dtc P1601 Injector Correction Circuit Malfunction (Eeprom)

Двигатель. Toyota Rav4. Aca30, 33, 38 Ala30
Система Управления Двигателем 2Ad-Ftv. Toyota Rav4. Aca30, 33, 38 Ala30

DESCRIPTION

INSPECTION PROCEDURE

CHECK INJECTOR COMPENSATION CODE

DTC P1601 Injector Correction Circuit Malfunction (EEPROM)


DESCRIPTION


DTC No.
DTC Detection Condition
Trouble Area
P1601
  1. Injector compensation code is not registered (1 trip detection logic)
  2. Wrong injector compensation code is registered (1 trip detection logic)
  1. Injector compensation code
  2. ECM
ПРИМЕЧАНИЕ:
  1. When an injector is replaced, the injector's compensation code must be input into the ECM. When the ECM is changed, all of the existing injector compensation codes must be input into the new ECM.
  2. Injector compensation codes are unique, 30-digit, alphanumeric values printed on the head portion of each injector. If an incorrect injector compensation code 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.

When replacing the ECM with a new one, input all the injector's compensation codes into the new ECM as follows:

  1. Prior to replacing the ECM, use the intelligent tester to read and save each injector's compensation code from the original ECM (see page RAV4_ACA30 RM000000TJ400AX.html).

  2. After installing a new ECM, input the saved compensation codes into the new ECM using the tester (see page RAV4_ACA30 RM000000TJ400AX.html).

  3. Turn the ignition switch off and then turn the tester OFF.

  4. Wait for at least 30 seconds.

  5. Turn the ignition switch on (IG) and then turn the tester ON.

  6. Clear DTC P1601 stored in the ECM using the tester (see page RAV4_ACA30 RM000000PDK01GX.html).

    УКАЗАНИЕ:
    1. 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.
    2. When you first turn ON the ignition switch after replacing the ECM or an injector(s), DTC P1601 is set. If an injector was replaced, the compensation code for the new injector will need to be registered in the ECM. If the ECM was replaced, the compensation codes for the injectors must be registered to the new ECM. Manually clear the DTC upon completion of compensation code registration.

INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (see page RAV4_ACA30 RM000000TJ400AX.html) and initialization (see page RAV4_ACA30 RM000000TIN009X.html).
1.CHECK INJECTOR COMPENSATION CODE

  1. Read the injector compensation code (see page RAV4_ACA30 RM000000TJ400AX.html).

    OK:
    Compensation codes stored in the ECM match compensation codes of the installed injectors.


NG
REGISTER INJECTOR COMPENSATION CODE
OK

REPLACE ECM