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:

Disassembly
1. REMOVE STOP LIGHT SWITCH ASSEMBLY (a) Turn the stop light switch assembly counterclockwise and remove the stop light switch assembly. (b) Remove the stop light switch mounting adjuster from the brake pedal support sub-assembly. 2. REMOVE STOP LIGHT SWITCH CUSHION (a) Remove the stop ligh ...

Adjustment procedure
Manual seat Seat position adjustment lever Seatback angle adjustment lever Vertical height adjustment lever (driver’s side only) Lumbar support adjustment switch (driver’s side only)* *: If equipped Power seat Seat position adjustment switch Seatback angle a ...

Speed Limit Assist
Concept When the systems in the vehicle, e.g., Speed Limit Info, detect a change of the speed limit along the route, this new speed value can be applied for the following systems: Manual Speed Limiter. Cruise control. Active Cruise Control with Stop&Go function. The speed value is suggested ...