Toyota Tundra (2015 year). Manual — part 1187
Stop the vehicle.
8.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9.
Read the pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
10.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11.
Input the DTC: P0500.
12.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
ABNORMAL
DTC judgment completed
System abnormal
INCOMPLETE
DTC judgment not completed
Perform driving pattern after confirming DTC enabling conditions
N/A
Unable to perform DTC judgment
HINT:
If the judgment result shows ABNORMAL, the system has a malfunction.
13.
If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and
check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
14.
WIRING DIAGRAM
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0500; Vehicl...
OK
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other
data from the time the malfunction occurred.
PROCEDURE
1.
CHECK OPERATION OF SPEEDOMETER
HINT:
The vehicle speed sensor is operating normally if the speedometer reading is normal.
If the speedometer does not operate, check it by following the procedure described in Speedometer
Malfunction
.
NG
GO TO MALFUNCTION IN SPEEDOMETER
2.
READ VALUE USING TECHSTREAM (VEHICLE SPEED)
(a) Connect the Techstream to the DLC3.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0500; Vehicl...
OK
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Data List / Vehicle Speed.
(e) Drive the vehicle.
(f) Read the value displayed on the Techstream.
OK:
Vehicle speeds displayed on the Techstream and speedometer display are equal.
NG
GO TO STEP 3
OK
CHECK FOR INTERMITTENT PROBLEMS
3.
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)
(a) Disconnect the combination meter connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
J28-29 (+S) - A24-13 (SPD)
Always
Below 1 Ω
J28-29 (+S) or A24-13 (SPD) -
Body ground
Always
10 kΩ or higher
HINT:
If the wire has a short, check the speed signal circuit in other
systems related to the vehicle speed signal (e.g. the tire
pressure warning system, audio system, etc.).
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
(OTHER SYSTEMS RELATED TO SPEED SIGNAL)
4.
INSPECT COMBINATION METER ASSEMBLY (+S VOLTAGE)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0500; Vehicl...
OK
(a) Disconnect the combination meter connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
J28-29 (+S) - Body
ground
Ignition switch ON
4.5 to 5.5 V
HINT:
NG
REPLACE ECM
5.
INSPECT COMBINATION METER ASSEMBLY (SPD SIGNAL OUTPUT WAVEFORM)
(a) Move the shift lever to N.
(b) Jack up the vehicle.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER
CONNECTION
SWITCH CONDITION
SPECIFIED
CONDITION
J28-29 (+S) - Body
ground
Ignition
switch ON
Wheel is
turned slowly
Voltage generated
intermittently
HINT:
The output voltage should fluctuate up and down similarly to the
diagram when the wheel is turned slowly.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0500; Vehicl...
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