B2775

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM (w/ Smart Key System): B2775: Interior Verification Abnormal (To Theft Deterrent ECU)

DTC B2775 - Interior Verification Abnormal (To Theft Deterrent ECU)

DESCRIPTION

This DTC is output when: 1) there is no response from the certification ECU, 2) the ECU communication ID was unable to be registered properly, 3) a communication error occurs between the transponder key ECU and certification ECU.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC
(a) Delete the DTC Engine Immobiliser System (w/ Smart Key System).
(b) Check for DTCs when turning the power switch ON (IG) without inserting the key into the key slot.

Result:





B -- NORMAL
A -- Continue to next step.

2. CHECK CERTIFICATION ECU (VERIFICATION)
(a) Check that the smart indicator on the meter is ON.

Result:





B -- GO TO SMART KEY SYSTEM (for Door lock)
A -- Continue to next step.

3. CHECK TRANSPONDER KEY ECU
(a) Insert the key into the key slot.
(b) Check that the power switch can be turned ON (IG).
OK:
Power switch can be turned ON (IG).
OK -- REREGISTER ECU COMMUNICATION ID CODE
NG -- Continue to next step.

4. CHECK FOR DTC (IMMOBILISER SYSTEM DTC)
(a) Check for DTCs and note any codes that are output Engine Immobiliser System (w/ Smart Key System).
(b) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.

Result:





NG -- GO TO DTC CHART
OK -- Continue to next step.

5. REREGISTER ECU COMMUNICATION ID CODE
(a) Reregister the ECU communication ID code with a transponder key ECU and certification ECU Engine Immobiliser System (W/ Smart Key System).
(b) Check that the power switch can be turned ON (IG) even if the key is not inserted into the key slot.
OK:
Power switch can be turned ON (IG) without key in key slot
OK -- NORMAL
NG -- Continue to next step.

6. CHECK TRANSPONDER KEY ECU (OPERATION)
(a) Temporarily replace the transponder key ECU with a new or normally functioning one.
(b) Check that the power switch can be turned ON (ACC or IG) and the hybrid control system can be started.

Result:





C -- GO TO SMART KEY SYSTEM
B -- REPLACE CERTIFICATION ECU
A -- END (TRANSPONDER KEY ECU IS DEFECTIVE)