Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT RADIATOR CAP SUB-ASSEMBLY

CAUTION:

Do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

(a) Measure the valve opening pressure.

(1) If there are water stains or foreign matter on rubber packing 1, 2 or 3,

(1) If there are water stains or foreign matter on rubber packing 1, 2 or 3, clean it by using water and finger scouring.

(2) Check that rubber packing 1, 2 and 3 are not deformed, cracked or swollen.

(3) Check that rubber packing 3 and 4 are not stuck together.

(4) Apply engine coolant to rubber packing 2 and 3.

(5) When using the radiator cap tester, tilt it 30° or more.

Text in Illustration

*1

Radiator Cap Sub-assembly

*a

Radiator Cap Tester

*b

More than 30°

(6) Pump the radiator cap tester several times and check the maximum pressure.*1

Pumping speed:

1 pump per second

HINT:

*1: Even if the radiator cap sub-assembly cannot maintain the maximum pressure, it is not necessarily defective.

Standard Judgment Criterion:

Item

Specified Condition

Standard value

(for brand-new cap)

93 to 123 kPa (1.0 to 1.3 kgf/cm2, 14 to 18 psi)

Minimum standard value

(for used cap)

79 kPa (0.8 kgf/cm2, 11 psi)

If the maximum pressure is less than the minimum standard value, replace the radiator cap sub-assembly.

2. INSPECT FINS FOR BLOCKAGE

(a) If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.

NOTICE:

  • To avoid damaging the fins, the injection direction should be at right angles to the core surface.
  • If the steam cleaner is too close to the core, there is a possibility of damaging the fins, so keep the following injection distances.

    Standard Injection Distance:

    Injection Pressure

    Specified Condition

    2942 to 4903 kPa

    (30.0 to 50.0 kgf/cm2, 427 to 711 psi)

    300 mm (11.8 in.)

    4903 to 7845 kPa

    (50.0 to 80.0 kgf/cm2, 711 to 1138 psi)

    500 mm (19.7 in.)

  • If the fins are bent, straighten them with a screwdriver or pliers.
  • Do not expose electronic components to water.

(b) Dry the fins with compressed air.

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE RADIATOR DRAIN COCK PLUG (a) Remove the radiator drain cock plug from the radiator assembly. (b) Remove the O-ring from the radiator drain cock plug. 2. REMOVE RAD ...

Other materials:

How To Proceed With Troubleshooting
HOW TO PROCEED WITH TROUBLESHOOTING 1. OPERATION FLOW HINT: Perform troubleshooting in accordance with the procedures below. The following is an outline of basic troubleshooting procedures. Confirm the troubleshooting procedures for the circuit you are working on before beginning troubleshoot ...

Disposal
DISPOSAL CAUTION / NOTICE / HINT CAUTION: Before performing pre-disposal deployment of any SRS part, review and closely follow all applicable environmental and hazardous material regulations. Pre-disposal deployment may be considered hazardous material treatment. PROCEDURE 1. PRECAUTION ...

Inspection
INSPECTION PROCEDURE 1. INSPECT FUEL INJECTOR ASSEMBLY NOTICE: This inspection aims at inspecting the fuel injectors for opens or shorts, because the fuel injectors of this vehicle are a high-pressure type and cannot be inspected for fuel injection volume. (a) Measure the resistance accordi ...

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