Code No.B1702: Reception error of key ID


caution Whenever the ECU is replaced, ensure that the input and output signal circuits are normal.

OPERATION



TROUBLE JUDGMENT



  • Diagnosis code No.B1702 is stored when there are other ignition keys or anything that interferes with the communication (things that generate radio waves such as magnets and an air-cleaning device that has a power plug) near the ignition key that is going to start the engine.
  • If the key ID is not sent to the immobilizer-ECU even when the ignition switch is turned to the ON position, diagnosis code No.B1702 is stored.
note Diagnosis code No.B1702 is always set along with diesel fuel system diagnosis code No.P0513.

PROBABLE CAUSES



  • Interference of the key ID
  • Malfunction of ignition key
  • Malfunction of immobilizer-ECU

DIAGNOSIS PROCEDURE


STEP 1. Check the ignition key inserted in the key cylinder for interference.


Q. Are there other ignition keys or anything that interferes with the communication (things that generate radio waves such as magnets and an air-cleaning device that has a power plug) near the ignition key inserted in the key cylinder?





STEP 2. Check with the spare key that has already been registered.



Q. Is diagnosis code No.B1702 set?





STEP 3. Check whether the diagnosis code is reset.


(1)Erase the diagnosis code.
(2)Turn the ignition switch to the "LOCK" (OFF) position once, and then turn it to the "ON" position again.
(3)On completion, check that diagnosis code No.B1702 is not reset.

Q. Is diagnosis code No.B1702 set?