Toyota Tundra (2015 year). Manual — part 2853
OK
SWITCH CONDITION
SPECIFIED CONDITION
Tire pressure warning reset switch off
Tire pressure warning light blinks.
NG
GO TO STEP 2
OK
USE SIMULATION METHOD TO CHECK
2.
INSPECT TIRE PRESSURE WARNING RESET SWITCH
(a) Remove the tire pressure warning reset switch
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
1 - 2
ON (Switch is pressed and held)
Below 1 Ω
OFF (Switch is not pressed)
10 kΩ or higher
NG
REPLACE TIRE PRESSURE WARNING RESET
SWITCH
3.
CHECK HARNESS AND CONNECTOR (RESET SWITCH - ECU AND BODY GROUND)
(a) Disconnect the J43 reset switch connector.
(b) Disconnect the J31 ECU connector.
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pre...
(c) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J31-1 (CLSW) - J43-1
Always
Below 1 Ω
J31-1 (CLSW) - Body ground
Always
10 kΩ or higher
J43-2 - Body ground
Always
Below 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE TIRE PRESSURE WARNING ECU
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pre...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM0000018LW032X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pressure Warning Light Circuit; 2015 MY
Tundra [08/2014 - ]
Tire Pressure Warning Light Circuit
DESCRIPTION
If the tire pressure warning ECU detects a disconnected connector or an open circuit between the tire pressure
warning ECU and combination meter, the tire pressure warning light turns off 10 seconds after the ignition switch
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the
Techstream and write them down before removal.
It is necessary to perform initialization
after registration
PROCEDURE
1.
PERFORM ACTIVE TEST USING TECHSTREAM (COMBINATION METER)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and the Techstream on.
(d) Start the engine.
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pre...
OK
(e) Enter the following menus: Body / Combination Meter / Active Test.
TESTER DISPLAY
TEST PART
CONTROL
RANGE
DIAGNOSTIC NOTE
Indicat. Tire Pressure
Warning System
Tire pressure
warning light
ON or OFF
Perform the test with the vehicle stopped
and engine idling
OK:
The warning light turns on/off when operating the Techstream.
NG
GO TO METER / GAUGE SYSTEM
2.
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECU)
(a) Disconnect the J31 ECU connector.
(b) Disconnect the J28 meter connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J31-5 (IND) - J28-13 (TIRE)
Always
Below 1 Ω
J31-5 (IND) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK ECU POWER SOURCE CIRCUIT
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pre...
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