Toyota Sienna Service Manual: Unlock warning switch

Door control switch

INSPECTION 1. INSPECT DOOR CONTROL SWITCH ASSEMBLY  Measure the resistance according to the value(s) in the table below. Standard resistance HINT: If the result is not as spec ...

Front door lock

INSPECTION 1. INSPECT FRONT DOOR W/ MOTOR LOCK ASSEMBLY LH  Apply battery voltage to the door lock and check operation of the motor. OK HINT: If the result is not as specified, ...

Other materials:

TS and CG Terminal Circuit
DESCRIPTION The Test Mode (signal check) circuit detects trouble in the sensor or switch signal, which cannot be detected by the DTC check. Connecting terminals TS and CG of the DLC3 starts the check. WIRING DIAGRAM INSPECTION PROCEDURE 1 CHECK HARNESS AND CONNECTOR (BETWEEN SKID CONTR ...

Problem symptoms table
HINT:  Use the table below to help determine the cause of the problem symptom. The likely causes of the problem are indicated in descending order. Check each suspected area in order. Repair or replace faulty parts or perform adjustments as necessary.  Inspect the fuse and rel ...

General information
A large number of ECU controlled systems are used in the SIENNA. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU controlled system's c ...