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, FWDFACTORY OEM SERVICE PROCEDURE
Service Data
FUEL SYSTEM SERVICE DATA SPECIFICATION (2AZ-FE)
| Fuel Pressure | 304 - 343 kPa (3.1 - 3.5 kgf/cm2 , 44 - 50 psi) | |
| Fuel Injector | ||
| Resistance At 20° C (68° F) | 13.4 - 14.2ohm | |
| Injection Volume | 69 - 82 cm2 (4.1 - 4.9 cu in.) per 15 seconds | |
| Difference Between Each Cylinder | 13 cm3 (0.8 cu in.) or less | |
| Fuel Leakage | 1 Drop Or Less Per 12 Minutes | |
| Fuel Pump Resistance At 20° C (68° F) | 0.2 - 3.0ohm | |
FUEL SYSTEM SERVICE DATA SPECIFICATION (1MZ-FE)
| Fuel Pressure | 304 - 343 kPa (3.1 - 3.5 kgf/cm2 , 44 - 50 psi) | |
| Fuel Injector | ||
| Resistance At 20° C (68° F) | 13.4 - 14.2ohm 6 | |
| Injection Volume | 0 - 73 cm2 (3.7 - 4.5 cu in.) Per 15 Seconds | |
| Difference Between Each Cylinder | 13 cm3 (0.8 cu in.) Or Less | |
| Fuel Leakage | 1 Drop Or Less Per 12 Minutes | |
| Fuel Pump Resistance At 20° C (68° F) | 0.2 - 3.0ohm | |
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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