Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the airbag system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

3.	CHECK CAN COMMUNICATION SYSTEM*

(a) Check for DTCs (See page ).

Result	Proceed to
DTC is not output	A
DTC is output	B

GO TO CAN COMMUNICATION SYSTEM

4.	WARNING LIGHT CHECK

5.	CHECK DTC (Present and Past DTCs)*

(a) Check for DTCs (See page ).

Result	Proceed to
DTC is not output	A
DTC is output	B

GO TO PROBLEM SYMPTOMS TABLE

DTC CHART

7.	CIRCUIT INSPECTION

REPAIR

9.	CLEAR DTC (Present and Past DTCs)*

10.	CHECK DTC (Present and Past DTCs)*

(a) Check for DTCs (See page ).

Result	Proceed to
DTC is not output	A
DTC is output	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

11.	CONFIRMATION TEST

END

System Diagram

SYSTEM DIAGRAM Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method Center Airbag Sensor ECM ...

System Description

SYSTEM DESCRIPTION 1. GENERAL (a) In conjunction with the impact absorbing structure for a front collision, the SRS (Supplemental Restraint System) steering pad, instrument panel passenger airba ...

Other materials about Toyota 4Runner:

Disassembly
DISASSEMBLY PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page ). 2. REMOVE DOOR PULL HANDLE (a) Using moulding rem ...

Removal
REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system (See page ). NOTICE: When disconnecting the cable, s ...