Toyota Tundra (2015 year). Manual — part 2854
Last Modified: 9-16-2014
6.6 J
Doc ID: RM0000018LV01GX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: ECU Power Source Circuit; 2015 MY Tundra
[08/2014 - ]
ECU Power Source Circuit
DESCRIPTION
This is the power source for the tire pressure warning ECU.
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.
INSPECT FUSE (ECU-IG No.1)
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: ECU P...
OK
(a) Remove the ECU-IG No. 1 fuse from the main body ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
ECU-IG No. 1 fuse
Always
Below 1 Ω
NG
GO TO STEP 3
2.
CHECK HARNESS AND CONNECTOR (ECU - BATTERY AND BODY GROUND)
(a) Disconnect the J31 ECU connector.
(b) Measure the voltage and resistance according to the value(s)
in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J31-7 (IG) - Body
ground
Ignition switch ON
11 to 14 V
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J31-9 (GND) - Body ground
Always
Below 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE TIRE PRESSURE WARNING ECU
3.
CHECK HARNESS AND CONNECTOR (ECU - BATTERY)
(a) Disconnect the J31 ECU connector.
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: ECU P...
(b) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
J31-7 (IG) - Body ground
Always
10 kΩ or higher
NG
REPLACE FUSE AND REPAIR OR REPLACE
HARNESS OR CONNECTOR
OK
REPLACE FUSE
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: ECU P...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM0000018LX044X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: TC and CG Terminal Circuit; 2015 MY Tundra
[08/2014 - ]
TC and CG Terminal Circuit
DESCRIPTION
WIRING DIAGRAM
HINT:
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
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: TC an...
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