2010 Lexus GX 460FACTORY OEM SERVICE PROCEDURE

Service Data

Camshaft Timing Oil Control Valve

Tester Connection Condition Specified Condition
1 - 2 20 °C (68 °F) 6.9 to 7.9 Ω

Throttle Body

Tester Connection Condition Specified Condition
1 (M-) - 2 (M+) 20 °C (68 °F) 0.3 to 100 Ω

Mass Air Flow Meter

Tester Connection Condition Specified Condition
4 (THA) - 5 (E2) -20 °C (-4 °F) 12.5 k to 16.9 kΩ
20 °C (68 °F) 2.19 k to 2.67 kΩ
60 °C (140 °F) 0.50 k to 0.68 kΩ

Engine Coolant Temperature Sensor

Tester Connection Condition Specified Condition
1 - 2 Approx. 20 °C (68 °F) 2.32 k to 2.59 kΩ
Approx. 80 °C (176 °F) 0.310 k to 0.326 kΩ

Knock Sensor

Tester Connection Condition Specified Condition
1 - 2 20 °C (68 °F) 120 to 280 kΩ

Air Fuel Ratio Sensor (for Bank 1)

Tester Connection Condition Specified Condition
1 (HA1A) - 2 (+B) 20 °C (68 °F) 1.8 to 3.4 Ω

Air Fuel Ratio Sensor (for Bank 2)

Tester Connection Condition Specified Condition
1 (HA2A) - 2 (+B) 20 °C (68 °F) 1.8 to 3.4 Ω

Heated Oxygen Sensor (for Bank 1)

Tester Connection Condition Specified Condition
1 (HT1B) - 2 (+B) 20 °C (68 °F) 11 to 16 Ω

Heated Oxygen Sensor (for Bank 2)

Tester Connection Condition Specified Condition
1 (HT2B) - 2 (+B) 20 °C (68 °F) 11 to 16 Ω

Spark Plug

Recommended spark plug Correct electrode gap for new spark plug Maximum electrode gap for used spark plug Standard insulation resistance
SK20HR11 Correct electrode gap for new spark plug 1.0 to 1.1 mm (0.0394 to 0.0433 in.) 1.3 mm (0.0512 in.) 10 MΩ or higher
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.