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:

Disassembly
1. REMOVE FRONT DIFFERENTIAL RING GEAR (a) Place matchmarks on the front differential ring gear and differential case. (b) Remove the 14 bolts. (c) Using a plastic hammer, tap on the front differential ring gear to remove it from the case. 2. REMOVE FRONT DIFFERENTIAL CASE FRONT TA ...

Installation
1. INSTALL SHOCK ABSORBER ASSEMBLY REAR LH (a) Install the rear spring bumper No.1 LH to the shock absorber assembly LH. (b) Support the rear axle beam assembly with a jack. (c) Install the rear shock absorber assembly rear LH, cushion retainer and nut to the rear axle beam. (d) ...

Dtc check / clear
1. DTC CHECK (SENSOR CHECK) (a) After the indicator check is completed, the system enters the DTC check mode automatically. (b) Read the codes displayed on the panel. Refer to the list of codes (See page AC-19) when reading the codes. (Trouble codes are output at the temperature display. ...

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