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.
1987 Toyota 4Runner SR5, 22-RTEFACTORY OEM SERVICE PROCEDURE
TCCS System
- Description
- Operation
- Diagnosis & Testing
- Trouble Shooting
- Diagnostic Circuit Check
- Injector Circuit Check
- Main Relay & Circuit
- "Check Engine" Light "Off"
- Stop Light Switch "On"
- Trouble Code 2 Airflow Meter & Circuit
- Trouble Codes 3 & 6 Igniter & Circuit
- Trouble Code 4 Coolant Temperature Sensor & Circuit
- Trouble Code 5 Oxygen Sensor
- Trouble Code 7 TPS Sensor & Circuit
- Trouble Code 8 Intake Air Temperature Sensor & Circuit
- Trouble Code 10 Ignition & Starter Circuit
- TCCS Voltage & Resistance Specifications
- Wiring Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
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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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