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:

Situations when it is necessary to contact dealers before towing
The following may indicate a problem with your transaxle. Contact your Toyota dealer or commercial towing service before towing. The engine is running but the vehicle does not move. The vehicle makes an abnormal sound Towing with a sling-type truck Do not tow with a sling-type truck to p ...

Identification of noise source
1. Radio Description Radio frequency band  Radio broadcasts use the radio frequency bands shown in the table below Service area The service areas of AM and FM broadcasts are vastly different. Sometimes an AM broadcast can be received very clearly but an FM st ...

Steering Pad Switch Circuit
DESCRIPTION This circuit sends an operation signal from the steering pad switch to the radio receiver. If there is an open in the circuit, the audio system cannot be operated using the steering pad switch. If there is a short in the circuit, the same condition as that when the switch is ...

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