Toyota Sienna Service Manual: Transponder Chip Malfunction

Toyota Sienna Service Manual / Engine immobiliser / Problem symptoms table / Diagnostic trouble code chart / Transponder Chip Malfunction

DTC B2793 Transponder Chip Malfunction

DESCRIPTION

This DTC is output when a malfunction is found in the key during the key code registration or the key code is not registered normally. Replace the key when the key code registration is not performed normally and this DTC is detected.

DESCRIPTION

INSPECTION PROCEDURE

1 CHECK DTC OUTPUT

Delete the DTC.
Insert the key into the ignition key cylinder.
Check that no code is output.

OK: No DTC is output.

2 RE-REGISTER KEY

Delete the DTC.
Re-register the key and insert this key into the ignition key cylinder.

Check that the engine starts with the key.

OK: The engine starts

REPLACE KEY

Antenna Coil Open / Short

DTC B2784 Antenna Coil Open / Short DESCRIPTION The transponder key coil is built into the transponder key amplifier and receives a key code signal from the transponder chip in the key. This sign ...

Unmatched Encryption Code

DTC B2794 Unmatched Encryption Code DESCRIPTION This DTC is output when a key with an incomplete key code is inserted into the ignition key cylinder. DTC No. DTC Detection Condi ...

Other materials:

Cursor or Map Rotates when Vehicle Stopped
INSPECTION PROCEDURE 1 CHECK CONDITION Check with the customer if the vehicle has been turned by a turntable. OK: Vehicle has not been turned by turntable. HINT: If the vehicle is turned on a turntable with the ignition switch on, the system may store the angular velocity. As a ...

DTC check / clear
1. CHECK DTC Connect the intelligent tester to the DLC3. Connect the intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Data Link Connector 3 (DLC3). Turn the ignition switch to the ON posi ...

Check for short circuit
(a) If the wire harness is ground shorted (Fig. 5), locate the section by conducting a resistance check with the body ground (below). (b) Check the resistance with the body ground. (1) Disconnect connectors A and C and measure the resistance. Standard resistance (Fig. 6) HIN ...