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Wiring diagrams- Abbreviations
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Repair manual
Testing & Diagnostics Lexus LS III
Step-by-step instructions on "Testing & Diagnostics" for Lexus LS III (2000–2003). Pick an article — removal, installation, adjustment and diagnostics with illustrations.
4subsections
50articles
79illustrations
Engine Controls - Basic Diagnostic Procedures
3 articlesEngine Controls - Trouble Shooting - No Codes
2 articlesEngine Controls - System & Component Testing - GS300, IS300, GS430 & LS430
3 articlesEngine Controls - Self-Diagnostics - LS430
42 articles- Engine Controls - Self-Diagnostics - LS430: Overview
- Engine Controls - Self-Diagnostics - LS430: Diagnosis 13
- Engine Controls - Self-Diagnostics - LS430: Other 1
- DTC P0100: MASS AIRFLOW (MAF) SENSOR CIRCUIT
- DTC P0101: MASS AIRFLOW (MAF) SENSOR CIRCUIT RANGE/PERFORMANCE FAULT
- 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 FAULT
- DTC P0120: THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION
- DTC P0121: THROTTLE POSITION (TP) SENSOR "A" CIRCUIT RANGE/PERFORMANCE FAULT
- DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
- DTC P0128: THERMOSTAT FAULT
- DTC P0130/P0150: HEATED OXYGEN SENSOR CIRCUIT MALFUNCTION
- DTC P0133/P0153: HEATED OXYGEN SENSOR CIRCUIT SLOW RESPONSE
- DTC P0135/P0155: HEATED OXYGEN SENSOR HEATER CIRCUIT (BANK NO. 1 OR 2 SENSOR NO. 1) OR DTC P0141/P0161: HEATED OXYGEN SENSOR HEATER CIRCUIT (BANK NO. 1 OR 2 SENSOR NO. 2)
- DTC P0136/P0156: HEATED OXYGEN SENSOR CIRCUIT MALFUNCTION
- DTC P0171/P0172: SYSTEM TOO LEAN/RICH (BANK NO. 1) OR DTC P0174/P0175: SYSTEM TOO LEAN/RICH (BANK NO. 2)
- DTC P0301-P0308: CYLINDERS NO. 1-8 MISFIRE DETECTED
- DTC P0325/P0330: KNOCK SENSOR CIRCUIT MALFUNCTION
- DTC P0420/P0430: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD
- DTC P0440: EVAP SYSTEM MALFUNCTION
- DTC P0441: INCORRECT EVAP PURGE FLOW OR DTC P0446: EVAP VENT CONTROL FAULT
- DTC P0450: EVAP PRESSURE SENSOR FAULT OR DTC P0451: EVAP PRESSURE SENSOR RANGE/PERFORMANCE MALFUNCTION
- DTC P0500: VEHICLE SPEED SENSOR (VSS) MALFUNCTION
- DTC P0505: IDLE CONTROL SYSTEM MALFUNCTION
- DTC P1120: ACCELERATOR PEDAL POSITION SENSOR CIRCUIT MALFUNCTION
- DTC P1121: ACCELERATOR PEDAL POSITION SENSOR CIRCUIT MALFUNCTION
- DTC P1125: THROTTLE CONTROL MOTOR CIRCUIT MALFUNCTION
- DTC P1127: ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) ACTUATOR POWER SOURCE CIRCUIT MALFUNCTION
- DTC P1128: THROTTLE CONTROL MOTOR LOCK MALFUNCTION
- DTC P1129: ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) MALFUNCTION
- DTC P1300, P1305, P1310, P1315, P1320, P1325, P1330 OR P1340: IGNITOR CIRCUIT MALFUNCTION
- DTC P1335: CRANKSHAFT POSITION (CKP) SENSOR MALFUNCTION (WHILE RUNNING)
- DTC P1345/P1350: VARIABLE VALVE TIMING (VVT) SENSOR CIRCUIT MALFUNCTION
- DTC P1346/P1351: VARIABLE VALVE TIMING (VVT)
- DTC P1349/P1354: VARIABLE VALVE TIMING (VVT)
- DTC P1520: STOPLIGHT SWITCH SIGNAL MALFUNCTION
- DTC P1600: ECM BATT MALFUNCTION
- DTC P1633: ELECTRONIC THROTTLE CONTROL SYSTEM (ETCS) CIRCUIT ECM MALFUNCTION
- DTC P1645: GATEWAY ECU MALFUNCTION
- DTC P1656/P1663: OIL CONTROL VALVE (OCV)
- DTC P1780: PARK/NEUTRAL POSITION SWITCH MALFUNCTION