Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Suspension / Tire Pressure Monitoring / Tire Pressure Warning System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the tire pressure warning system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer to confirm the trouble.

HINT:

It is important to collect as much specific information as possible from the customer to allow for a quick repair.

3.	ADJUST TIRE PRESSURE*

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(f) Read the "ID Tire Inflation Pressure" values.

(g) Adjust all tire pressures to the standard values (See page ).

(h) Check the Data List (See page ).

HINT:

It takes approximately 2 or 3 minutes to display the updated tire pressure data.
If the problem is that the tire pressure was low, wait until all of the tire pressure data is received by the ECU. When the data is received, the tire pressure warning light turns off.

Result	Proceed to
Tire pressure warning light remains on	A
Tire pressure warning light goes off	B

GO TO STEP 9

4.	CHECK FOR DTC*

(a) Check for DTCs (See page ).

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

GO TO STEP 6

DTC CHART

(a) Refer to the Diagnostic Trouble Code Chart (See page ).

GO TO STEP 8

6.	PROBLEM SYMPTOMS TABLE

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

7.	CIRCUIT INSPECTION*

(a) Refer to the Electronic Circuit Inspection Procedure (See page ).

8.	REPAIR OR REPLACE

(a) Repair or replace parts based on the diagnosis result.

9.	CONFIRMATION TEST*

(a) Check the Data List to confirm that the tire inflation pressure has been received (See page ).

END

System Description

SYSTEM DESCRIPTION 1. DESCRIPTION OF SYSTEM (a) When the tire pressure warning system detects that the tire pressure of a tire is below the threshold, it illuminates the tire pressure warning ligh ...

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