Manual sections
Wiring diagrams- Abbreviations
- Accessory Drive Belts
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Repair manual
Testing & Diagnostics Toyota 4Runner III
Step-by-step instructions on "Testing & Diagnostics" for Toyota 4Runner III (1995–2003). Pick an article — removal, installation, adjustment and diagnostics with illustrations.
8subsections
69articles
342illustrations
Engine Controls - Basic Diagnostic Procedures - 4-CYLINDER
3 articlesEngine Controls - Basic Diagnostic Procedures - V6 & V8
3 articlesEngine Control System Self-Diagnostics - 4-CYLINDER
17 articles- Engine Control System Self-Diagnostics - 4-CYLINDER: Diagnosis 13
- DTC P0110: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT
- DTC P0115: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT
- DTC P0116: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT RANGE/PERFORMANCE
- DTC P0120: THROTTLE POSITION (TP) SENSOR CIRCUIT
- DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
- DTC P0130: HEATED OXYGEN SENSOR NO. 1 CIRCUIT
- DTC P0133: HEATED OXYGEN SENSOR NO. 1 CIRCUIT SLOW RESPONSE
- DTC P0135: HEATED OXYGEN SENSOR NO. 1 HEATER CIRCUIT
- DTC P0136: HEATED OXYGEN SENSOR NO. 2 CIRCUIT
- DTC P0141: HEATED OXYGEN SENSOR NO. 2 HEATER CIRCUIT
- DTC P0171 OR P0172: SYSTEM TOO LEAN/RICH
- Engine Control System Self-Diagnostics - 4-CYLINDER: Other
- DTC P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD
- DTC P0440: EVAPORATIVE EMISSION CONTROL SYSTEM
- DTC P0441: INCORRECT EVAP PURGE FLOW, OR DTC P0446: EVAP VENT CONTROL CIRCUIT
- DTC P1335: CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT
Engine Control System Self-Diagnostics - V6
34 articles- Engine Control System Self-Diagnostics - V6: Diagnosis 14
- DTC P0100: MASS AIRFLOW (MAF) METER CIRCUIT
- DTC P0110: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT
- DTC P0115: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT
- DTC P0116: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT RANGE/PERFORMANCE
- DTC P0120: THROTTLE POSITION (TP) SENSOR CIRCUIT
- DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL (EXCEPT CALIF. EMISSIONS)
- DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL (CALIF. EMISSIONS)
- DTC P0130: HEATED OXYGEN SENSOR NO. 1 CIRCUIT (EXCEPT CALIF. EMISSIONS)
- DTC P0133: HEATED OXYGEN SENSOR NO. 1 CIRCUIT SLOW RESPONSE (EXCEPT CALIF. EMISSIONS)
- DTC P0135: HEATED OXYGEN SENSOR NO. 1 HEATER CIRCUIT (EXCEPT CALIF. EMISSIONS)
- DTC P0136: HEATED OXYGEN SENSOR NO. 2 CIRCUIT
- DTC P0141: HEATED OXYGEN SENSOR NO. 2 HEATER CIRCUIT
- DTC P0171 OR P0172: SYSTEM TOO LEAN/RICH (EXCEPT CALIF. EMISSIONS)
- DTC P0171 OR P0172: SYSTEM TOO LEAN/RICH (CALIF. EMISSIONS)
- Engine Control System Self-Diagnostics - V6: Other
- DTC P0325 OR P0330: KNOCK SENSOR NO. 1 OR 2 CIRCUIT
- DTC P0335 OR P1335: CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT
- DTC P0340: CAMSHAFT POSITION (CMP) SENSOR CIRCUIT
- DTC P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (EXCEPT CALIF. EMISSIONS)
- DTC P0420: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (CALIF. EMISSIONS)
- DTC P0440: EVAPORATIVE EMISSION CONTROL SYSTEM
- DTC P0441: INCORRECT EVAP PURGE FLOW, OR DTC P0446: EVAP VENT CONTROL CIRCUIT
- DTC P0450: EVAP PRESSURE SENSOR CIRCUIT, OR DTC P0451: EVAP PRESSURE SENSOR RANGE/PERFORMANCE
- DTC P0500: VEHICLE SPEED SENSOR CIRCUIT
- DTC P0505: IDLE AIR CONTROL (IAC) SYSTEM CIRCUIT
- DTC P1130: AIR/FUEL SENSOR CIRCUIT RANGE/PERFORMANCE (CALIF. EMISSIONS)
- DTC P1133: AIR/FUEL SENSOR CIRCUIT RESPONSE (CALIF. EMISSIONS)
- DTC P1135: AIR/FUEL SENSOR HEATER CIRCUIT (CALIF. EMISSIONS)
- DTC P1300: IGNITOR CIRCUIT
- DTC P1335: CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT
- DTC P1520: STOPLIGHT SWITCH SIGNAL CIRCUIT (A/T ONLY)
- DTC P1600: ECM BATT CIRCUIT
- DTC P1780: PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT