Toyota RAV4 manuals

Toyota Sienna Service Manual: How to proceed with troubleshooting

HINT: *: Use the intelligent tester.

1 VEHICLE BROUGHT TO WORKSHOP

2 CUSTOMER PROBLEM ANALYSIS

  1. (a) Confirm problem symptoms

3 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.

Result:

CHECK MULTIPLEX COMMUNICATION SYSTEM

INSPECT MULTIPLEX COMMUNICATION CIRCUIT

4 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.

Result:

CHECK CAN COMMUNICATION SYSTEM

CHECK CAN COMMUNICATION SYSTEM

INSPECT CAN COMMUNICATION CIRCUIT

5 SRS WARNING LIGHT CHECK

  1. Proceed to Diagnosis System

6 CHECK FOR DTC*

  1. Proceed to DTC Check / Clear (5).

Result:

CHECK FOR DTC

GO TO STEP 8

7 DIAGNOSTIC TROUBLE CODE CHART

  1. Proceed to Diagnostic Trouble Code Chart

GO TO STEP 10

8 SYMPTOM SIMULATION

  1. Proceed to Diagnosis System

9 PROBLEM SYMPTOMS TABLE

  1. Proceed to Problem Symptoms Table

10 CIRCUIT INSPECTION

11 IDENTIFICATION OF PROBLEM

12 REPAIR OR REPLACEMENT

13 CONFIRMATION TEST

END

System description
1. GENERAL In conjunction with impact absorbing structure for a frontal collision, the SRS (Supplemental Restraint System) driver airbag and front passenger airbag were designed to supplemen ...

Problem symptoms table
HINT: Proceed to the troubleshooting for each circuit in the table below. AIRBAG SYSTEM Symptom Suspected Area The SRS warning light goes off after the primary check, ...

Other materials:

USE SIMULATION METHOD TO CHECK
DTC B0113/42 Short to B+ in Side Squib RH Circuit DESCRIPTION The side squib RH circuit consists of the center airbag sensor assembly and the front seat side airbag assembly RH. This circuit instructs the SRS to deploy when deployment conditions are met. DTC B0113/42 is recorded when a sh ...

On-vehicle inspection
1. FRONT SEAT SIDE AIRBAG ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnostic system check.  With the front seat side airbag assembly installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front seatback as ...

Installation
HINT:  Use the same procedures for the RH side and LH side.  The procedures listed below are for the LH side. 1. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY LH  Install the curtain shield airbag assembly LH with the 13 bolts in the order shown in the illustration. Tor ...

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