Toyota Sienna Service Manual: 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.
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:
Security Indicator Light Circuit
DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security
indicator blinks due to a signal
output from the immobiliser system. The security indicator blinks continuously
due to a continuous signal
received from the immobiliser system while in the armed state.
...
Basic repair hint
(a) HINTS ON OPERATIONS
BASIC REPAIR HINT
1
Attire
• Always wear a clean uniform.
• Hat and safety shoes must be worn.
2
Vehicle protection
Prepare a grille cover, fender cover, seat cover and floor mat before
starting the
operation.
3
...
Crankshaft Position Sensor "A" Circuit
DTC P0335 Crankshaft Position Sensor "A" Circuit
DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent
DESCRIPTION
The Crankshaft Position (CKP) sensor system consists of a CKP sensor plate
and a pickup coil. The
sensor plate has 34 teeth and is installed on the cra ...
