Toyota Tundra (2015 year). Manual — part 2850
OK
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
HINT:
When the speedometer needle is not moving, first troubleshoot the meter/gauge system
.
PROCEDURE
1.
READ VALUE USING DATA LIST (VEHICLE SPEED)
(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) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(e) Check that the values indicated on the Techstream and on the combination meter are the same.
Tire Pressure Monitor
TESTER
DISPLAY
MEASUREMENT
ITEM/RANGE
NORMAL CONDITION
DIAGNOSTIC NOTE
Vehicle Speed
Vehicle speed/
min.: 0 km/h (0 mph)
max.: 255 km/h (158
mph)
Almost same as actual vehicle
speed
Speed indicated on combination
meter
OK:
Vehicle speed indicated on the Techstream indicates the actual speed.
NG
GO TO STEP 3
2.
CHECK DTC
(a) Perform a driving test.
(b) Check for DTCs.
HINT:
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2174/...
OK
The time required for DTC C2174 to be stored is 20 minutes.
Result
RESULT
PROCEED TO
DTC C2174 is not output
A
DTC C2174 is output
B
B
GO TO STEP 6
A
USE SIMULATION METHOD TO CHECK
3.
CHECK HARNESS AND CONNECTOR (ECU - COMBINATION METER)
(a) Disconnect the J31 tire pressure warning 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
J31-2 (SPD) - J28-29 (+S)
Always
Below 1 Ω
J31-2 (SPD) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2174/...
OK
4.
CHECK HARNESS AND CONNECTOR (COMBINATION METER - SKID CONTROL ECU)
(a) Disconnect the A17 skid control 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
A17-3 (SP1) - J28-30 (SI)
Always
Below 1 Ω
A17-3 (SP1) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
5.
CHECK DTC (SFI SYSTEM)
(a) Check for DTCs.
HINT:
for 1UR-FE
.
for 3UR-FE
.
for 3UR-FBE
.
Result
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2174/...
A
NEXT
NEXT
NEXT
RESULT
PROCEED TO
DTC P0500 is not output
A
DTC P0500 is output
B
B
REPLACE COMBINATION METER
6.
REPLACE TIRE PRESSURE WARNING ECU
(a) Replace the tire pressure warning ECU
.
7.
PERFORM REGISTRATION OF TRANSMITTER ID
(a) Perform registration
.
8.
PERFORM INITIALIZATION
(a) Perform initialization
.
9.
CHECK DTC
(a) Perform a driving test.
(b) Check for DTCs.
HINT:
TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2174/...
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