DESCRIPTION
When an internal malfunction occurs in the ID code box (immobiliser code ECU), the certification ECU (smart key ECU assembly) stores this DTC.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B2790 |
ID BOX EEPROM Malfunction |
An internal malfunction occurs in the ID code box (immobiliser code ECU) (EEPROM access malfunction). (1 trip detection logic*) |
|
DTC output confirmation operation:
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
---|---|
|
- |
DTC No. |
Data List and Active Test |
---|---|
B2790 |
- |
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
REPLACE ID CODE BOX (IMMOBILISER CODE ECU) |
(a) Replace the ID code box (immobiliser code ECU) with a new one.
Click here
|
2. |
CLEAR DTC |
(a) Clear the DTCs.
Click here
|
3. |
REGISTER RECOGNITION CODE |
(a) Register the recognition code to the ECUs.
Click here
|
4. |
REGISTER ECU COMMUNICATION ID |
(a) Register the ECU communication ID codes.
Click here
|
5. |
CHECK FOR DTC |
(a) Perform "DTC Output Confirmation Operation" procedure.
(b) Check for DTCs.
Click here
OK:
DTC B2790 is not output.
OK | ![]() |
END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE) |
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Toyota CH-R Service Manual > Pre-collision System: Lost Communication with Gateway Module (U1002)
DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U1002
Lost Communication with Gateway Module
When the ignition switch is ON, a communication error between the forward
recognition camera an ...
Toyota CH-R Service Manual > Door Control Transmitter(w/o Smart Key System): Removal
REMOVAL
CAUTION / NOTICE / HINT
NOTICE:
Take extra care when handling these precision electronic components.
PROCEDURE
1. REMOVE TRANSMITTER HOUSING COVER
(a) Using a screwdriver with its tip wrapped in protective tape, remove the transmitter
housing cover as shown in the illustration.
...