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
Body Electrical > Smart Key > Clear DTCs
|
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
Body Electrical > Smart Key > Trouble CodesOK:
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 > Air Conditioning System(for Automatic Air Conditioning System With Side-mounted
Air Conditioner Pressure Sensor): Terminals Of Ecu
TERMINALS OF ECU
AIR CONDITIONING AMPLIFIER ASSEMBLY
HINT:
Check from the rear of the connector while it is connected to the air conditioning
amplifier assembly.
Terminal No.
(Symbol)
Wiring Color
Terminal Description
Condition
Specif ...
Toyota CH-R Service Manual > Steering Column Assembly: Disassembly
DISASSEMBLY
CAUTION / NOTICE / HINT
NOTICE:
Do not drop the power steering ECU assembly, strike it with tools or
subject it to impacts.
If the power steering ECU assembly is subjected to an impact, replace
it with a new one.
Do not pull the wire harness.
Do not allow a ...