Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Vehicle Interior / Door Lock / Key Reminder Warning System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedures to troubleshoot the key reminder warning 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 to the next step.

3.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally (See page ).

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

GO TO CAN COMMUNICATION SYSTEM

4.	PROBLEM SYMPTOMS TABLE

(a) Refer to the Problem Symptoms Table (See page ).

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

GO TO STEP 6

5.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page ).

(b) Terminals of ECU (See page ).

6.	REPAIR OR REPLACE

7.	CONFIRMATION TEST

END

System Diagram

SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Main body ECU (Multiplex network body ECU) Combination meter a ...

SYSTEM DESCRIPTION 1. KEY REMINDER WARNING SYSTEM DESCRIPTION (a) When the driver side door is opened while the ignition switch is ACC or off and the key is in the ignition key cylinder, this syst ...

Other materials about Toyota 4Runner:

Installation
INSTALLATION PROCEDURE 1. INSTALL STEREO COMPONENT AMPLIFIER ASSEMBLY (a) Install the stereo component amplifier to the No. 1 speaker assembly with box with the 3 bolts. 2. INSTALL NO. 1 SPEAKER ASSEMBLY WITH BOX (a) Attach the 2 claws, lower ...

Rear Occupant Classification Sensor RH Circuit Malfunction (B1783)
DESCRIPTION The rear occupant classification sensor RH circuit consists of the occupant classification ECU and rear occupant classification sensor RH. DTC B1783 is stored when a malfunction is detected in the rear occupant classification sensor RH circui ...

Toyota 4Runner: How To Proceed With Troubleshooting

System Diagram

System Description

Other materials about Toyota 4Runner: