DESCRIPTION
DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
---|---|---|---|
B2793 |
A transponder chip malfunction (1 trip detection logic*). |
|
Insert the key into the ignition key cylinder, turn the ignition switch from off to ON and wait at least 20 seconds. |
B2794 |
A key with an incomplete key ID code is used to turn the ignition switch to ON (1 trip detection logic*). |
||
B2797 |
A key with a BCC malfunction is used to turn the ignition switch to ON (1 trip detection logic*). |
||
B2798 |
Key ID code identification cannot be completed within the specified time (1 trip detection logic*). |
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
---|---|
Engine cannot be started |
- |
DTC No. |
Data List and Active Test |
---|---|
B2793 |
- |
B2794 |
- |
B2797 |
- |
B2798 |
- |
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs (See page ).
|
2. |
CHECK DTC OUTPUT |
(a) Perform "DTC Output Confirmation Operation" procedure.
(b) Check for DTCs (See page ).
HINT:
If DTC B2793, B2794, B2797, or B2798 is stored, clear the DTCs before checking the next key.
OK:
DTC B2793, B2974, B2797 and B2798 are not output.
Result
Result |
Proceed to |
---|---|
DTCs are output for all of the keys |
A |
DTCs are output for any of the keys |
B |
DTCs are not output |
C |
B | ![]() |
REPLACE KEY THAT DTC IS OUTPUT |
C | ![]() |
USE SIMULATION METHOD TO CHECK |
|
3. |
CHECK CONNECTION OF CONNECTOR |
(a) Check that the connector is properly connected to the transponder key coil.
(b) Check that the engine starts with the key.
OK:
Engine starts normally.
OK | ![]() |
END (CONNECTOR WAS NOT CONNECTED PROPERLY) |
|
4. |
REPLACE TRANSPONDER KEY COIL |
(a) Clear the DTCs (See page ).
(b) Replace the transponder key coil (See page
).
(c) Check that the engine starts with the key (See page
).
OK:
Engine starts normally.
OK | ![]() |
END (TRANSPONDER KEY COIL WAS DEFECTIVE) |
NG | ![]() |
REPLACE TRANSPONDER KEY ECU ASSEMBLY |
Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129)
DESCRIPTION
These DTCs are stored when a communication malfunction occurs between ECUs that
perform pre-collision system control.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U0100
Lost Communication with ECM ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT REFRIGERANT PRESSURE
(a) This method uses a refrigerant recovery unit set to locate problem areas.
Read the refrigerant pressure when the test conditions are established.
Test conditions:
Temperature at the air inlet with the air recirculation ...
Starter Relay
Inspection
INSPECTION
PROCEDURE
1. INSPECT STARTER RELAY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Connection
Specified Condition
3 - 5
...