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.
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HOMESERVICE MANUALSTOYOTA2002HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISDIAGRAMSELECTRICAL DIAGRAMSHEATING AND AIR CONDITIONINGSYSTEM DIAGRAMSERVICE HINTSAUTOMATIC A/C
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Automatic A/C
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Automatic A/C
A3 A/C DUAL PRESSURE SW [A/C TRIPLE PRESSURE SW]
1 - 4 : Open with the pressure less than 2.0 kgf/sq.cm (28 psi, 196 kpa) or above 32 kgf/sq.cm (455 psi, 3138 kpa)
A10 A/C CONTROL ASSEMBLY
12 - GROUND : Always approx. 12 volts
2 - GROUND : Approx. 12 volts with the ignition SW at ON position
11 - GROUND : Always continuity
1 - 4 : Open with the pressure less than 2.0 kgf/sq.cm (28 psi, 196 kpa) or above 32 kgf/sq.cm (455 psi, 3138 kpa)
A10 A/C CONTROL ASSEMBLY
12 - GROUND : Always approx. 12 volts
2 - GROUND : Approx. 12 volts with the ignition SW at ON position
11 - GROUND : Always continuity
RENDER: 1.0x
NO RELATED
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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.