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)
Internal Control Module Random Access Memory (RAM) Error
DESCRIPTION
The ECM continuously monitors its own internal memory status, internal
circuits, and output signals
transmitted to the throttle actuator. This self-check ensures that the ECM is
functioning properly. If any
malfunction is detected, the ECM sets the appropriate DTC and illumina ...
Cooling fan relay
On-vehicle inspection
1. Cooling fan relay
(a) Remove the relay from engine room relay block No.
1.
(b) Measure the resistance of the relay.
Standard resistance
If the result is not as specified, replace the cooling
fan relay.
(c) Install the relay to engine room relay block No. ...
Short in Front Pretensioner Squib RH Circuit
DTC B0130/63 Short in Front Pretensioner Squib RH Circuit
DESCRIPTION
The front pretensioner squib RH circuit consists of the center airbag sensor
assembly and the front seat
outer belt assembly RH.
This circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0130/63 ...