Toyota RAV4 manuals

Toyota Sienna Service Manual: Security Horn Circuit

DESCRIPTION

During the alarm sounding state, the relay in the ECU turns on and off in a cycle of approximately 0.2 seconds, causing the security horn to sound.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT SECURITY HORN ASSEMBLY

INSPECT SECURITY HORN ASSEMBLY

  1. Disconnect the T1 security horn connector.
  2.  Check the operation of the security horn.

Standard

Standard

2 CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - SECURITY HORN ASSEMBLY)

 CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - SECURITY HORN ASSEMBLY)

  1. Disconnect the B8 ECU connector.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPLACE MULTIPLEX NETWORK BODY ECU

Engine Hood Courtesy Switch Circuit
DESCRIPTION The engine hood courtesy switch is built in the engine hood lock assembly. The switch turns on when the engine hood is opened and turns off when the engine hood is closed. WIRING DIAG ...

Ignition Switch Circuit
DESCRIPTION When the ignition switch is turned to the ON position, battery positive voltage is applied to terminal IG of the ECU. When battery positive voltage is applied to terminal IG of the ECU ...

Other materials:

Diagnosis system
1. CHECK DLC3  The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not ...

Adjustment procedure
Hold the steering wheel and push the lever down. Adjust to the ideal position by moving the steering wheel horizontally and vertically. After adjustment, pull the lever up to secure the steering wheel. ...

Reassembly
1. INSTALL BACK DOOR STOPPER LOWER Install the 2 stoppers with the 4 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) 2. INSTALL BACK DOOR BASE STOPPER BRACKET Install the 2 brackets with the 4 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) 3. INSTALL BACK DOOR WITH MOTOR LOCK ASSEMB ...

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