2003 Lexus IS 300 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Service Data

IGNITION COMPONENTS SERVICE SPECIFICATION

High-tension cord Resistance: Maximum 25 kohm per cord
Spark plug Recommended spark plug: DENSO made SK16R-P11
Correct electrode gap for new plug 1.1 mm (0.043 in.)
Maximum electrode gap for used plug 1.2 mm (0.047 in.)
Ignition coil Primary coil resistance: at cold 0.33 - 0.52 ohm
Primary coil resistance: at hot 0.42 - 0.61 ohm
Secondary coil resistance: at cold 8.5 - 14.7 kohm
Secondary coil resistance: at hot 10.8 - 17.2 kohm
Camshaft position sensor Resistance: at cold 835 - 1,400 ohm
Resistance: at hot 1,060 - 1,645 ohm
Crankshaft position sensor Resistance: at cold 1,630 - 2,740 ohm
Resistance: at hot 2,065 - 3,225 ohm
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.

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