DESCRIPTION
If an ECM that is incompatible with the immobiliser system is installed, the ECM stores this DTC.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B279C |
Theft Deterrent System Presence Detection |
An ECM that is incompatible with immobiliser system is installed. |
ECM |
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
---|---|
Engine cannot be started |
- |
DTC No. |
Data List and Active Test |
---|---|
B279C |
- |
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCs
|
2. |
CHECK FOR DTC |
(a) Start the engine.
(b) Check for DTCs.
Powertrain > Engine and ECT > Trouble CodesHINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
OK:
DTC B279C is not output.
Result |
Proceed to |
---|---|
DTC B279C is not output |
A |
DTC B279C is output |
B |
A | ![]() |
USE SIMULATION METHOD TO CHECK |
|
3. |
REPLACE ECM |
(a) Replace the current ECM with the proper ECM.
Click here
NEXT | ![]() |
END |
Toyota CH-R Service Manual > Can Communication System: Open in Bus 3 Main Bus Line
DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance
between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway
ECU) is 70 Ω or higher.
Symptom
Trouble Area
Resistance between terminals 6 ...
Toyota CH-R Service Manual > Immobiliser System(w/ Smart Key System): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Inspect the fuses and relays related to this system before inspecting
the suspected areas below.
If the problem only occurs in certain locations or at certain times
of day, check for wave interference.
If the optional components are installed, c ...