Nissan Versa (N17): Engine control system (EC)
Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC)
- Precaution
- Engine control system
- Structure and operation
- Engine control system
- Multiport fuel injection system
- Electric ignition system
- Air conditioning cut control
- Cooling fan control
- Evaporative emission system
- Intake valve timing control
- Exhaust valve timing control
- Engine protection control at low engine oil pressure
- Fuel filler cap warning system
- Automatic speed control device (ASCD)
- Automatic speed control device (ASCD)
- Diagnosis description
- Ecm
- Diagnosis and repair workflow
- Additional service when replacing ECM
- Accelerator pedal released position learning
- Throttle valve closed position learning
- Idle air volume learning
- Mixture ratio selflearning value clear
- Basic inspection
- Fuel pressure check
- How to set SRT code
- How to erase permanent DTC
- Trouble diagnosis specification value
- Power supply and ground circuit
- U0101 can comm circuit
- U1001 CAN comm circuit
- P0011 IVT control
- P0014 EVT control
- P0031, P0032 A/F sensor 1 heater
- P0037, P0038 HO2s2 heater
- P0075 IVT control solenoid valve
- P0078 EVT control solenoid valve
- P0101 MAF sensor
- P0102, P0103 MAF sensor
- P0111 IAT sensor
- P0112, P0113 IAT sensor
- P0116 ECT sensor
- P0117, P0118 ECT sensor
- P0122, P0123 TP sensor
- P0125 ECT sensor
- P0127 IAT sensor
- P0128 thermostat function
- P0130 A/F sensor 1
- P0131 A/F sensor 1
- P0132 A/F sensor 1
- P0137 HO2s2
- P0138 HO2s2
- P0139 HO2s2
- P014C, P014D, P015A, P015B, A/F sensor 1
- P0171 fuel injection system function
- P0181 FTT sensor
- P0182, P0183 FTT sensor
- P0196 EOT sensor
- P0197, P0198 EOT sensor
- P0222, P0223 TP sensor
- P0300, P0301, P0302, P0303, P0304 misfire
- P0327, P0328 KS
- P0335 CKP sensor (POC)
- P0340 CMP sensor (PHASE)
- P0420 three way catalyst function
- P0441 EVAP control system
- P0443 EVAP canister purge volume control solenoid valve
- P0444, P0445 EVAP canister purge volume control solenoid valve
- P0447 EVAP canister vent control valve
- P0448 EVAP canister vent control valve
- P0451 EVAP control system pressure sensor
- P0452 EVAP control system pressure sensor
- P0453 EVAP control system pressure sensor
- P0456 EVAP control system
- P0460 fuel level sensor
- P0461 fuel level sensor
- P0462, P0463 fuel level sensor
- P0500 VSS
- P0506 ISC system
- P0507 ISC system
- P050a, P050b, P050e cold start control
- P0520 EOP sensor
- P0524 engine oil pressure
- P0603 ECM power supply
- P0605 ECM
- P0607 ECM
- P0643 sensor power supply
- P0850 PNP switch
- P1078 EVT control position sensor
- P1148 closed loop control
- P117A air fuel ratio
- P1212 TCS communication line
- P1217 engine over temperature
- P1225 TP sensor
- P1226 TP sensor
- P1550 battery current sensor
- P1551, P1552 battery current sensor
- P1553 battery current sensor
- P1554 battery current sensor
- P1564 ASCD steering switch
- P1572 ASCD brake switch
- P1574 ASCD vehicle speed sensor
- P1715 Input speed sensor
- P1720 VSS
- P1805 brake switch
- P2096, P2097 A/F sensor 1
- P2100, P2103 throttle control motor relay
- P2101 electric throttle control function
- P2118 throttle control motor
- P2119 electric throttle control actuator
- P2122, P2123 APP sensor
- P2127, P2128 APP sensor
- P2135 TP sensor
- P2138 APP sensor
- Brake pedal position switch
- Clutch pedal position switch
- Cooling fan
- Electrical load signal
- Fuel injector
- Fuel pump
- Ignition signal
- Malfunction indicator lamp
- On board refueling vapor recovery (ORVR)
- Refrigerant pressure sensor
- Engine control system symptoms
- Normal operating condition
- IDLE SPEED
- Ignition timing
- Evaporative emission system
- EVAP leak check
- Positive crankcase ventilation
- Removal and installation
- Service data and specifications (SDS)
Engine cooling system (CO)
Other materials:
U0073 Communication bus a off
DTC Logic
DTC
Trouble diagnosis name
DTC detecting condition
Possible causes
U0073
Control Module Communication
Bus "A" Off
When the ignition switch is ON,
TCM detects a bus-off error
continuously for 2 seconds or
more.
Harness or connector
(CA ...
P0734 4GR Incorrect ratio
Description
This malfunction is detected when the A/T does not shift into 4GR position as
instructed by TCM. This is not
only caused by electrical malfunction (circuits open or shorted) but by
mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC ...
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