Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Toyota Highlander Limited, AWDFACTORY OEM SERVICE PROCEDURE
Service Data
IGNITION SYSTEM SERVICE DATA SPECIFICATION (2AZ-FE)
| Spark Plug | |||
| Recommended Spark Plug : | |||
| DENSO | SK20R11 | ||
| NGK | IFR611 | ||
| Electrode Gap | |||
| Standard | 1.0-1.1mm (0.039-0.043 in.) | ||
| Maximum | 1.2 mm (0.047 in.) | ||
| Camshaft Position Sensor | |||
| Resistance | |||
| At Cold | 835-1400 ohm | ||
| At Hot | 1060-1645 ohm | ||
| Crank Position Sensor | |||
| Resistance | |||
| At Cold | 985-1600 ohm | ||
| At Hot | 1265-1890 ohm | ||
IGNITION SYSTEM SERVICE DATA SPECIFICATION (1MZ-FE)
| Spark Plug | |||
| Recommended Spark Plug | |||
| DENSO | SK20R11 | ||
| NGK | IFR6A11 | ||
| Electrode Gap | |||
| Standard | 1.0-1.1mm (0.039-0.043 in.) | ||
| Maximum | 1.2mm (0.047 in.) | ||
| Crank Position Sensor | |||
| Resistance | |||
| At Cold | 835-1400 ohm | ||
| At Hot | 1060-1645 ohm | ||
| Crank Position Sensor | |||
| Resistance | |||
| At Cold | 1630-2740 ohm | ||
| At Hot | 2065-3225 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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