Toyota CH-R Service Manual: How To Proceed With Troubleshooting

Toyota CH-R Service Manual / Tire Pressure Monitoring / Tire Pressure Warning System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the tire pressure warning system.
Make sure that the wireless door lock control system has exited diagnostic mode before performing the following procedure.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer to confirm the problem.

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

Click here

(e) Set the all tire pressure to the specified value.

NOTICE:

Refer to the link as the procedure for adjusting the tire pressures differs depending on the temperature of the tires.

Click here

(f) Display "ID Tire Inflation Pressure" in the Data List and check that the tire pressure values match the adjusted pressure amount.

HINT:

It may take a few minutes until the values are displayed.

(g) Perform initialization.

Click here

HINT:

The tire pressure warning system illuminates the tire pressure warning light to warn the driver when the following condition is met:

Due to the operation of the steering pad switch assembly, the tire pressure drops to approximately 75% or less of the tire pressure set during system initialization.

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

GO TO STEP 11

4.	CHECK ECU CONNECTED TO CAN BUS*

(a) Check the ECUs connected to the CAN bus.

Click here

Result	Proceed to
No malfunction appears	A
Malfunction appears	B

GO TO CAN COMMUNICATION SYSTEM

5.	CHECK FOR DTC (CAN COMMUNICATION SYSTEM)*

(a) Check for DTCs.

Click here

Result	Proceed to
CAN system DTCs are not output	A
CAN system DTCs are output	B

GO TO CAN COMMUNICATION SYSTEM

6.	CHECK FOR DTC*

(a) Check for DTCs.

Click here

Result	Proceed to
DTCs are output	A
DTCs are not output	B

GO TO STEP 8

DTC CHART

(a) Refer to Diagnostic Trouble Code Chart.

Click here

GO TO STEP 10

8.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

9.	CIRCUIT INSPECTION*

(a) Refer to Electronic Circuit Inspection Procedure.

Click here

10.	REPAIR OR REPLACE

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

11.	CONFIRMATION TEST*

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

Click here

(b) Perform initialization.

Click here

END

System Description

SYSTEM DESCRIPTION DESCRIPTION OF SYSTEM (a) The tire pressure warning system warns the driver when the tire pressure has decreased in order to decrease CO2 emissions and enhance safety. (b) The ...

Operation Check

OPERATION CHECK CHECK TIRE PRESSURE WARNING SYSTEM FUNCTION (a) Using the Data List, check that the current tire pressure is normal. Click here (1) Slowly reduce the tire pressure of the front ...

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