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 DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINS
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Computers and Control Systems: Technical Service Bulletins
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Technical Service Bulletins
- Recalls
- Customer Interest
- Canada - Engine Controls - MIL ON/DTC's P0420/P0430 Set
- Canada - Engine - MIL ON/DTC 1349 (VVTi Actuator) Set
- Canada - Brakes - ABS Lamp/MIL ON/DTC P0500 Set
- Canada - Engine Controls - Error When Reprogramming ECU
- Engine Controls - MIL ON/DTC's P0420/P0430 Stored
- Engine Controls - Error When Reprogramming ECU
- Air Bag System - MIL ON/DTC B1140 and B1141 Set
- Engine - MIL ON/DTC 1349 (VVTi Actuator) Set
- Brakes - ABS Lamp/MIL ON/DTC P0500 Set
- By Symptom
- Customer Interest
- Canada - Engine Controls - MIL ON/DTC's P0420/P0430 Set
- Canada - Engine - MIL ON/DTC 1349 (VVTi Actuator) Set
- Canada - Brakes - ABS Lamp/MIL ON/DTC P0500 Set
- Canada - Engine Controls - Error When Reprogramming ECU
- Engine Controls - MIL ON/DTC's P0420/P0430 Stored
- Engine Controls - Error When Reprogramming ECU
- Air Bag System - MIL ON/DTC B1140 and B1141 Set
- Engine - MIL ON/DTC 1349 (VVTi Actuator) Set
- Brakes - ABS Lamp/MIL ON/DTC P0500 Set
- False instrument warning light/gauges
- Recalls
- Customer Interest
- All Technical Service Bulletins
- Computers/Controls - Techstream(R) Reprogramming Procedure
- Canada - Engine Controls - Accelerator Pedal Sensor Precaution
- Fuel System - Accelerator Pedal Sensor Service Precaution
- Canada - Engine Controls - Techstream(R) ECU Re-Flash Procedure
- Canada - Engine Controls - MIL ON/DTC's P0420/P0430 Set
- Canada - Engine Controls - AF Sensor Identification
- Canada - Engine - MIL ON/DTC 1349 (VVTi Actuator) Set
- Canada - Engine Controls - ECU Reprogramming Procedure
- Canada - Emissions - OBD II Readiness Monitor Drive Patterns
- Canada - Brakes - ABS Lamp/MIL ON/DTC P0500 Set
- Canada - Diagnostic Program Card - Customize Function
- Canada - Engine Controls - Error When Reprogramming ECU
- Canada - Engine Controls - ECU Flash Reprogramming Process
- Engine Controls - A/F And O2 Sensor Identification
- Campaign - ECM Update For MIL ON/DTC P0420/P0430
- Engine Controls - MIL ON/DTC's P0420/P0430 Stored
- Engine/Transmission Controls - Resetting ECM Memory
- Engine Controls - O2 Sensor Monitor Threshold Values
- Engine Controls - Error When Reprogramming ECU
- Engine Controls - ECU Reprogramming Procedure
- Air Bag System - MIL ON/DTC B1140 and B1141 Set
- Engine - MIL ON/DTC 1349 (VVTi Actuator) Set
- Brakes - ABS Lamp/MIL ON/DTC P0500 Set
- Emissions - OBD II Readiness Monitor Drive Patterns
- Diagnostic Program Card - Customize Function
- Engine Controls - Bank 1/Bank 2 O2 Sensor identification
- Canada - ECM Reset Memory Function
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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.