DTC B2796 No Communication in Immobiliser System
DTC B2798 Communication Malfunction No. 2
DESCRIPTION
These codes are stored in the memory when a key that does not have a transponder chip is inserted or if communication between the key and transponder key ECU is impossible.
DTC No. |
DTC Detection Condition |
Trouble Area |
B2796 |
No communication |
|
B2798 |
Communication error |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Transponder key ECU:
OK: UNSET (Ignition switch on) appears on the screen.
2 CHECK KEYS
OK: The engine starts
3 READ VALUE OF INTELLIGENT TESTER
Transponder key ECU:
OK: NORMAL (Antenna coil is normal) appears on the screen.
4 CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - TRANSPONDER KEY AMPLIFIER)
Resistance
5 INSPECT TRANSPONDER KEY ECU ASSEMBLY
Voltage
Resistance
6 REPLACE TRANSPONDER KEY AMPLIFIER
OK: The engine starts.
END (TRANSPONDER KEY AMPLIFIER DEFECTIVE)
DTC B2797 Communication Malfunction No. 1
DESCRIPTION
This DTC is output when an error occurs in normal communication.
HINT: Some noise found in the communication line.
DTC No. |
DTC Detection Condition |
Trouble Area |
B2797 |
Keys are positioned too close to each other, or noise occurred in communication line. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK KEY
Result
2 CHECK DTC OUTPUT
OK: No DTC is output.
3 CHECK TRANSPONDER KEY AMPLIFIER
Check that no noise is included in the waveform (an example of noise is shown on the left).
Result
4 CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - TRANSPONDER KEY AMPLIFIER)
Resistance
5 REPLACE TRANSPONDER KEY AMPLIFIER
OK: The engine starts
END (TRANSPONDER KEY AMPLIFIER DEFECTIVE)
Black Screen
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
Check that the display is not in "Screen OFF" mode.
OK:
The display setting is not in "Screen OFF" mode.
2 CHECK IMAGE QUALITY SETTING
Check that the screen color quality can be set.
OK:
Setting is possible.
PRESS PA ...
Installation
1. INSTALL STEERING PAD
Support the steering pad with one hand as shown in
the illustration.
Connect the 2 connectors to the steering pad.
NOTICE:
When handling the airbag connector, take care
not to damage the airbag wire harness.
Connect the horn connector.
...
Brake Switch "B" Circuit High
DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling while
driving in lock-up condition when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signals to the ECM. Then
the ECM cancels the
operation of the lock-up clutch while ...