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Repair manual
Testing & Diagnostics Lexus SC I
Step-by-step instructions on "Testing & Diagnostics" for Lexus SC I (1991–2001). Pick an article — removal, installation, adjustment and diagnostics with illustrations.
4subsections
43articles
40illustrations
Engine Controls - Basic Testing
3 articlesEngine Controls - Tests W/codes
33 articles- Engine Controls - Tests W/codes: Overview
- Engine Controls - Tests W/codes: Diagnosis 6
- Engine Controls - Tests W/codes: Component Locations
- Engine Controls - Tests W/codes: Other 1
- DTC P0100 - MASS AIRFLOW (MAF) SENSOR CIRCUIT
- DTC P0110 - INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT
- DTC P0115 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT
- DTC P0120 - THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION
- DTC P0125 - INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
- DTC P0130 - HEATED OXYGEN SENSOR FAULT (BANK NO. 1, SENSOR NO. 1) DTC P0150 - HEATED OXYGEN SENSOR FAULT (BANK NO. 2, SENSOR NO. 1)
- DTC P0133 - HEATED OXYGEN SENSOR (BANK NO. 1, SENSOR NO. 1) CIRCUIT SLOW RESPONSE DTC P0153 - HEATED OXYGEN SENSOR (BANK NO. 2, SENSOR NO. 1) CIRCUIT SLOW RESPONSE
- DTC P0135 - HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 1, SENSOR NO. 1) DTC P0141 - HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 1, SENSOR NO. 2) DTC P0155 - HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 2, SENSOR NO. 1)
- DTC P0136 - HEATED OXYGEN SENSOR CIRCUIT (BANK NO. 1, SENSOR NO. 2)
- DTC P0171 - SYSTEM TOO LEAN (FUEL TRIM) DTC P0172 - SYSTEM TOO RICH (FUEL TRIM)
- DTC P0325 - KNOCK SENSOR NO. 1 CIRCUIT DTC P0330 - KNOCK SENSOR NO. 2 CIRCUIT
- DTC P0335 OR P1335 - CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT
- DTC P0340 - CAMSHAFT POSITION (CMP) SENSOR CIRCUIT
- DTC P0385 - CRANKSHAFT POSITION (CKP) SENSOR CIRCUIT
- DTC P0401 - INSUFFICIENT EXHAUST GAS RECIRCULATION (EGR) FLOW DETECTED
- DTC P0402 - EXCESSIVE EGR FLOW DETECTED
- DTC P0420 - CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD
- DTC P0441 - INCORRECT EVAP PURGE FLOW
- DTC P0500 - VEHICLE SPEED SENSOR (VSS) MALFUNCTION
- DTC P0505 - IDLE CONTROL SYSTEM MALFUNCTION
- DTC P0510 - CLOSED THROTTLE POSITION (CTP) SWITCH MALFUNCTION
- DTC P1200 - FUEL PUMP RELAY CIRCUIT MALFUNCTION
- DTC P1300 - IGNITOR CIRCUIT MALFUNCTION
- DTC P1400 - SUB-THROTTLE POSITION (SUB-TP) SENSOR MALFUNCTION
- DTC P1401 - SUB-THROTTLE POSITION (SUB-TP) SENSOR CIRCUIT
- DTC P1500 - STARTER SIGNAL CIRCUIT MALFUNCTION
- DTC P1600 - ECM BATT MALFUNCTION
- DTC P1605 - KNOCK CONTROL ECM MALFUNCTION
- DTC P1780 - PARK/NEUTRAL POSITION SWITCH MALFUNCTION