Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT TRANSPONDER KEY COIL (IGNITION KEY CYLINDER LIGHT)

(a) Apply battery voltage to the connector and check the light illumination condition.

OK:

Condition

Specified Condition

Battery positive (+) → Terminal 2 (ILL+)

Battery negative (-) → Terminal 4 (ILL-)

Illuminates

If the result is not as specified, replace the transponder key coil (ignition key cylinder light).

*a	Component without harness connected (Transponder Key Coil (Ignition Key Cylinder Light))

Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Push Switch / Key Unlock Warning Switch Malfunction (B2780)
DESCRIPTION This DTC is stored if the transponder key ECU assembly does not detect that the unlock warning switch assembly is on even when the ignition switch is ON. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2780 Push Switch / Key Unlock Warning Switch Malfunction The unlock ...

Toyota Tundra Owners Manual