Toyota Tacoma (2015-2018) Service Manual: Repair
REPAIR
PROCEDURE
1. REPAIR INTAKE VALVE SEATS
NOTICE:
- Repair the intake valve seat while checking the seating position.
- Keep the lip free of foreign matter.
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(a) Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification. |
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(b) Using 30° and 60° cutters, correct the valve seat so that the intake valve contacts the entire circumference of the seat. The contact should be in the center of the intake valve seat, and the intake valve seat width should be maintained within the specified range around the entire circumference of the intake valve seat. Text in Illustration
Standard width: 1.1 to 1.5 mm (0.0433 to 0.0591 in.) |
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(c) Hand-lap the intake valve and intake valve seat with an abrasive compound.
(d) Check the intake valve seating position.
2. REPAIR EXHAUST VALVE SEATS
NOTICE:
- Repair the seat while checking the seating position.
- Keep the lip free of foreign matter.
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(a) Using a 45° cutter, resurface the valve seat so that the valve seat width is more than the specification. |
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(b) Using 30° and 75° cutters, correct the exhaust valve seat so that the exhaust valve contacts the entire circumference of the seat. The contact should be in the center of the exhaust valve seat, and the exhaust valve seat width should be maintained within the specified range around the entire circumference of the exhaust valve seat. Text in Illustration
Standard width: 1.3 to 1.7 mm (0.0512 to 0.0669 in.) |
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(c) Hand-lap the exhaust valve and exhaust valve seat with an abrasive compound.
(d) Check the exhaust valve seating position.
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Perform "Inspection After Repairs" after replacing the cylinder head sub-assembly
or cylinder head LH (See page ).
PROCEDURE
1. INSTALL SPARK ...
Other materials:
Low Output Signal of Front Speed Sensor RH (Test Mode DTC) (C1271,C1272,C1401,C1402)
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to
the skid control ECU (master cylinder solenoid). These signals are used for brake
control.
The speed sensor rotors have rows of alternating N and S magnetic poles and their
magnetic fields change when t ...
Freeze Frame Data
FREEZE FRAME DATA
CHECK FREEZE FRAME DATA
HINT:
The ECU records vehicle and driving condition information as freeze frame data
the moment a DTC is stored.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: P ...
Transmission Fluid Temperature Sensor "A" Circuit Range/Performance (P071000)
DESCRIPTION
The No. 1 ATF temperature sensor converts the fluid temperature into a resistance
value for use by the ECM.
The ECM applies a voltage to the temperature sensor through terminal THO1 of
the ECM.
The sensor resistance changes with the ATF temperature. As the temperature becomes
hi ...
