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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2002HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISBODY AND FRAMESEATSSEAT BACKTESTING AND INSPECTION
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Seat Back: Testing and Inspection
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Testing and Inspection
INSPECT FRONT SEAT BACK HEATER ASSEMBLY LH
a. Inspect the seat back heater assembly LH continuity.
If continuity is not as specified, replace the seat heater cushion assembly.
b. Inspect the seat cushion thermostat continuity.
1. Disconnect the seat back heater from the seat cushion heater.
2. Heat the thermostat with a light.
3. Inspect the seat cushion heater continuity between terminal, as shown.
If continuity is not as specified, replace the seat heater cushion heater assembly.
INSPECT FRONT SEAT BACK HEATER ASSEMBLY RH
a. Inspect the seat back heater assembly LH continuity.
If continuity is not as specified, replace the seat heater cushion assembly.
b. Inspect the seat cushion thermostat continuity.
1. Disconnect the seat back heater from the seat cushion heater.
2. Heat the thermostat with a light.
3. Inspect the seat cushion heater continuity between terminal, as shown.
If continuity is not as specified, replace the seat heater cushion heater assembly.
INSPECT FRONT SEAT BACK HEATER ASSEMBLY RH
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.