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Repair manual
Testing & Diagnostics Infiniti Q45 II
Step-by-step instructions on "Testing & Diagnostics" for Infiniti Q45 II (1996–2001). Pick an article — removal, installation, adjustment and diagnostics with illustrations.
5subsections
68articles
75illustrations
Engine Controls - Tests W/o Codes - I30 & Q45
2 articlesEngine Controls - Basic Testing
2 articlesEngine Controls - Self-Diagnostics - Testing - Q45
57 articles- Engine Controls - Self-Diagnostics - Testing - Q45: Overview 3
- DTC P0100: MASS AIRFLOW (MAF) SENSOR
- Engine Controls - Self-Diagnostics - Testing - Q45: Diagnosis 44
- DTC P0105: ABSOLUTE PRESSURE (AP) SENSOR
- DTC P0110: INTAKE AIR TEMPERATURE (IAT) SENSOR
- DTC P0115 OR P0125: ENGINE COOLANT TEMPERATURE (ECT) SENSOR
- DTC P0120 OR P1125: THROTTLE POSITION (TP) SENSOR
- DTC P0130 OR P0150: FRONT HEATED OXYGEN SENSORS (HO2S) CIRCUIT
- Engine Controls - Self-Diagnostics - Testing - Q45: Other 2
- DTC P0131 OR P0151: FRONT HEATED OXYGEN SENSORS (HO2S) LEAN SHIFT
- DTC P0132 OR P0152: FRONT HEATED OXYGEN SENSORS (HO2S) RICH SHIFT
- DTC P0133 OR P0153: FRONT HEATED OXYGEN SENSORS (HO2S) RESPONSE MONITORING
- DTC P0134 OR P0154: FRONT HEATED OXYGEN SENSORS (HO2S) HIGH VOLTAGE
- DTC P0135 OR P0155: FRONT HEATED OXYGEN SENSOR (HO2S) HEATER
- DTC P0137 OR P0157: REAR HEATED O2 SENSOR (HO2S) MINIMUM VOLTAGE MONITORING
- DTC P0138 OR P0158: REAR HEATED OXYGEN SENSOR (HO2S) MAXIMUM VOLTAGE MONITORING
- DTC P0139 OR P0159: REAR HEATED OXYGEN SENSOR (HO2S) RESPONSE MONITORING
- DTC P0140 OR P0160: REAR HEATED OXYGEN SENSOR (HO2S) HEATER
- DTC P0141 OR P0161: REAR HEATED OXYGEN SENSOR (HO2S) HEATER
- DTC P0171 OR P0174: FUEL INJECTION SYSTEM (LEAN)
- DTC P0172 OR P0175: FUEL INJECTION SYSTEM (RICH)
- DTC P0180: TANK FUEL TEMPERATURE (TFT) SENSOR
- DTC P0300-P0308: CYLINDER MISFIRE DETECTED
- DTC P0325 OR P0330: KNOCK SENSOR (KS)
- DTC P0335 OR P1336: CRANKSHAFT POSITION (CKP) SENSOR
- DTC P0340: CAMSHAFT POSITION (CMP) SENSOR
- DTC P0400 OR P1402: EGR FUNCTION
- DTC P0420 OR P0430: 3-WAY CATALYST (TWC) FUNCTION
- DTC P0440 OR P1440: EVAP CANISTER CONTROL SYSTEM LEAK
- DTC P0443: EVAP CANISTER PURGE VOLUME CONTROL VALVE
- DTC P0446: EVAP CANISTER VENT CONTROL VALVE
- DTC P0450: EVAP CONTROL SYSTEM PRESSURE SENSOR
- DTC P0500: VEHICLE SPEED SENSOR (VSS)
- DTC P0505: IDLE AIR CONTROL (IAC)
- DTC P0510: CLOSED THROTTLE POSITION (TP) SWITCH
- DTC P0600 OR P1605: A/T CONTROL
- DTC P0605: PCM-ECCS CONTROL MODULE
- DTC P0705 OR P1706: PARK/NEUTRAL POSITION SWITCH
- DTC P1105: MAP/BARO SWITCH SOLENOID VALVE
- DTC P1110 OR P1135: INTAKE VALVE TIMING CONTROL (IVTC)
- DTC P1120: SECOND THROTTLE POSITION SENSOR (STPS)
- DTC P1125: THROTTLE POSITION SENSOR
- DTC P1140: INTAKE VALVE TIMING CONTROL (IVTC) POSITION SENSOR
- DTC P1145: RIGHT INTAKE VALVE TIMING CONTROL (IVTC) POSITION SENSOR
- DTC P1210: TRACTION CONTROL SYSTEM (TCS) SIGNAL CIRCUIT
- DTC P1220: FUEL PUMP CONTROL MODULE (FPCM)
- DTC P1320: IGNITION SIGNAL
- DTC P1336: CRANKSHAFT POSITION (CKP) SENSOR
- DTC P1400: EGR VALVE & EVAP-CPCS OR EGRC SOLENOID VALVE
- DTC P1401: EGR TEMPERATURE SENSOR
- DTC P1402: EGR FUNCTION
- DTC P1440: EVAP CONTROL
- DTC P1444: EVAP CANISTER PURGE VOLUME CONTROL VALVE
- DTC P1490: EVAP VACUUM CUT VALVE BY-PASS VALVE
- DTC P1491: EVAP VACUUM CUT VALVE BY-PASS VALVE
- DTC P1492: EVAP CANISTER VENT CONTROL VALVE
- DTC P1493: EVAP CANISTER PURGE CONTROL SOLENOID VALVE