Toyota Sienna Service Manual: Engine immobiliser

Security horn assembly

INSPECTION 1. INSPECT SECURITY HORN ASSEMBLY  Check operation of the horn. Standard If the result is not a ...

Engine immobiliser system

PARTS LOCATION SYSTEM DESCRIPTION The engine immobiliser system has been designed to prevent the vehicle from being stolen. This system uses a transponder key ECU that stores the key code of t ...

Other materials:

System normal condition check
1. CHECK NORMAL CONDITION  If the symptom is applicable to any of the following, it is intended behavior, and not a malfunction. Symptom Answer A longer route than expected is chosen. Depending on the road conditions, the radio and navigation assembly m ...

Inspection
1. INSPECT REAR SPEED SENSOR (a) Remove the seat cushion and seatback. (b) Disconnect the speed sensor connector. (c) Measure the resistance between terminals 1 and 2 of the speed sensor connector OK: Resistance: 1.1 +- 0.2 kΩ at 25 +- 5 °C (d) Measure the resistance between ea ...

Diagnosis system
1. CHECK BATTERY VOLTAGE Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge the battery before proceeding. 2. CHECK DLC3 (a) The ECU uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 f ...