Toyota RAV4 manuals

Toyota Sienna Service Manual: Diagnosis Circuit

DESCRIPTION

DTC output mode is set by connecting terminals TC and CG of the DLC3.

DTCs are displayed by blinking the SRS warning light.

HINT:

WIRING DIAGRAM

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK MULTIPLEX COMMUNICATION SYSTEM

  1. Check if the multiplex communication system DTC is output.

HINT: The center airbag sensor assembly of this system is connected to the multiplex communication system.

Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

OK: The Multiplex communication system DTC is not output.

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

2 CHECK CAN COMMUNICATION SYSTEM

  1. Use the intelligent tester to check if the CAN communication system is functioning normally.

HINT: The ECM is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

OK: The CAN communication system is functioning normally.

REPAIR CAN COMMUNICATION CIRCUIT

3 CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM)

CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM)

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the connector from the ECM.
  3.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPAIR OR REPLACE WIRE HARNESS (TC OF DLC3 - TC OF ECM)

4 CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)

CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)

  1. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPAIR OR REPLACE WIRE HARNESS (CG OF DLC3 - BODY GROUND)

5 CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)

CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)

  1. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPAIR OR REPLACE WIRE HARNESS OR EACH ECU

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

SRS Warning Light does not Come ON
DESCRIPTION WIRING DIAGRAM INSPECTION PROCEDURE 1 CHECK BATTERY Measure the voltage of the battery. Standard voltage: 11 to 14 V CHECK AND REPLACE BATTERY OR CHARGING SYSTEM 2 CHECK CO ...

Occupant classification system
...

Other materials:

Reassembly
1. INSTALL NO. 2 SEAT LEG SUB-ASSEMBLY  Install the No. 2 seat leg sub-assembly with the 3 bolts and nut. Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf) NOTICE: Tighten the bolts and nuts in the order shown in the illustration.  Install the 3 clamps. 2. INSTALL NO. 2 SEAT ...

Circuit inspection
A description of the main areas of each circuit inspection is shown in the table below. Item Description Circuit Description The major role, operation of the circuit and its component parts are explained. Diagnostic Trouble Code No. and Detection item Indicates ...

Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION The stereo jack adapter sends an external device sound signal to the radio receiver through this circuit. The sound signal that has been sent is amplified by the stereo component amplifier or radio receiver, and then is sent to the speakers. If there is an open or short in th ...

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