Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Tire Pressure Warning Light Circuit

DESCRIPTION

If the tire pressure warning ECU and receiver detects any problems, the tire pressure warning light blinks for 1 minute then illuminates, and tire pressure monitoring is disabled at the same time. At this time, the ECU stores a DTC in memory.

Connecting terminals TC and CG of the DLC3 makes the tire pressure warning light blink to output DTCs. The tire pressure warning ECU and receiver sends the tire pressure warning light illumination request signal to the main body ECU (multiplex network body ECU) via a direct line. The main body ECU (multiplex network body ECU) then sends the signal to the combination meter assembly via CAN communication.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
  • It is necessary to perform initialization (See page ) of the transmitter IDs into the tire ) after registration (See page pressure warning ECU and receiver if the ECU has been replaced. ) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.

PROCEDURE

1.

CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

(a) Check if CAN communication system DTCs are output (See page Result Result ).

Result

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B

B

GO TO CAN COMMUNICATION SYSTEM

A

2.

CHECK DTC OUTPUT (B1247)

(a) Clear the DTCs (See page (b) Turn the ignition switch off. ).

(b) Turn the ignition switch off.

(c) Turn the ignition switch to ON.

(d) Check for DTCs (See page OK: ).

OK:

DTC B1247 is not output.

NG

GO TO DTC (B1247)

OK

3.

CHECK OPERATION OF TIRE PRESSURE WARNING LIGHT (ACTIVETEST)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(f) Check the condition of the tire pressure warning light using the Techstream.

Combination Meter

Tester Display

Measurement Item

Control Range

Diagnostic Note

Indicat. Tire Pressure Warning System

Tire pressure warning light

OFF or ON

Confirm that the vehicle is stopped with the engine idling.

OK:

The tire pressure warning light turns on or off in accordance with the Techstream operation.

OK

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

NG

GO TO METER / GAUGE SYSTEM

TC and CG Terminal Circuit
DESCRIPTION Tire pressure warning system DTCs can be checked by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by blinking the tire pressure warning light. WIRING DI ...

Tire Position Not Identified
DESCRIPTION The tire pressure warning ECU and receiver identifies the tire position for each tire pressure warning valve and transmitter according to the wheel speed signals from the skid control ...

Other materials:

Installation
INSTALLATION PROCEDURE 1. INSPECT FRONT PROPELLER SHAFT ASSEMBLY (with Grease Fitting) HINT: When replacing the spider bearing, make sure that the grease fitting assembly hole is facing in the direction shown in the illustration. Text in Illustration *1 No. 1 Grease Fi ...

Steering Angle Sensor Zero Point Malfunction (C1290)
DESCRIPTION The skid control ECU (master cylinder solenoid) acquires steering angle sensor zero point every time the ignition switch is turned to ON and the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds. The ECU also stores the previous zero point. If the front wh ...

Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for both the LH and RH sides. The procedure described below is for the LH side. PROCEDURE 1. REMOVE NO. 1 FRONT WHEEL OPENING EXTENSION PAD (w/ Front Spoiler) 2. SEPARATE FRONT FENDER LINER (a) Remov ...

В© 2011-2024 Copyright www.ttguide.net