Toyota Tundra Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

(a) Connect the Techstream to the DLC3.

(b) Start the engine and turn the tester ON.

(c) Warm up the engine.

(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2) or Control the VVT System (Bank 1) or Control the VVT System (Bank 2) or Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2).

(e) Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

OK:

Tester Operation

Specified Condition

OCV OFF

Normal engine speed

OCV ON

Soon after OCV switched from OFF to ON, engine idles roughly or stalls

If the result is not as specified, check the oil control valve, wiring and camshaft timing gear.

HINT:

  • Control the VVT Linear (Bank 1): Command to activate exhaust and intake side oil control valves of bank 1 (Control range: Between -128 to 127%).
  • Control the VVT Linear (Bank 2): Command to activate exhaust and intake side oil control valves of bank 2 (Control range: Between -128 to 127%).
  • Control VVT System (Bank 1): Command to activate oil control valve of bank 1 (Control range: ON/OFF).
  • Control VVT System (Bank 2): Command to activate oil control valve of bank 2 (Control range: ON/OFF).
  • Control the VVT Exhaust Linear (Bank 1): Command to activate exhaust side oil control valve of bank 1 (Control range: Between -128 to 127%).
  • Control the VVT Exhaust Linear (Bank 2): Command to activate exhaust side oil control valve of bank 2 (Control range: Between -128 to 127%).
    Installation

    Removal

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