Toyota Tundra (2015 year). Manual — part 1105
If the judgment result shows INCOMPLETE or N/A, perform the following procedure.
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.
19.
WIRING DIAGRAM
Refer to DTC P0013
.
INSPECTION PROCEDURE
ABNORMAL BANK
ADVANCED TIMING OVER
(VALVE TIMING OUT OF SPECIFIED RANGE)
RETARDED TIMING OVER
(VALVE TIMING OUT OF SPECIFIED RANGE)
Bank 1
P0014
P0015
Bank 2
P0024
P0025
If DTC P0014 or P0015 is displayed, check the bank 1 VVT system for exhaust camshaft circuit.
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
If DTC P0024 or P0025 is displayed, check the bank 2 VVT system for exhaust camshaft circuit.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014, P0015, P0024 OR
P0025)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Read DTCs.
Result
RESULT
PROCEED TO
P0014, P0015, P0024 or P0025
A
P0014, P0015, P0024 or P0025 and other DTCs
B
HINT:
If any DTCs other than P0014, P0015, P0024 or P0025 are output, troubleshoot those DTCs first.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,...
A
OK
B
GO TO DTC CHART
2.
PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV)
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
(c) Warm up the engine.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust
Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).
(e) Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream.
OK:
TESTER OPERATION
SPECIFIED CONDITION
0%
Normal engine speed
100%
Engine idles roughly or stalls
NG
GO TO STEP 4
3.
CHECK WHETHER DTC OUTPUT RECURS (DTC P0014, P0015, P0024 OR P0025)
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
(c) Clear DTCs
.
(d) Warm up the engine.
(e) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
Pattern.
(f) Read the output pending DTCs using the Techstream.
OK:
No pending DTC output.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,...
OK
NG
GO TO STEP 4
OK
CHECK FOR INTERMITTENT PROBLEMS
4.
CHECK VALVE TIMING (CHECK FOR LOOSENESS IN TIMING CHAIN OR JUMPED
TOOTH)
(a) Remove the cylinder head cover LH and RH.
HINT:
If the alignment marks are not as shown, turn the crankshaft one revolution clockwise.
If the result is not as specified, check mechanical parts related to valve timing for looseness in the timing
chain, jumped teeth, etc.
OK:
Alignment marks on camshaft timing gears are aligned as shown in the illustration.
NG
CHECK ENGINE MECHANICAL SYSTEM
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,...
OK
5.
INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY (OCV)
(a) Remove the OCV
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
1 - 2
20°C (68°F)
6.9 to 7.9 Ω
(c) Apply positive (+) battery voltage to terminal 1 and negative (-) battery voltage to terminal 2. Check
the valve operation.
OK:
Valve moves quickly.
NG
REPLACE CAMSHAFT OIL CONTROL VALVE
ASSEMBLY
6.
INSPECT OIL CONTROL VALVE FILTER
(a) Remove the oil control valve filter
.
(b) Check that the filter is not clogged.
OK:
Filter is not clogged.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,...
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