Gasoline engine management SR20DE Nissan Serena 2 (C24)
Description of the system
Thanks to the integrated electronic engine control system (ECCS), ignition timing, fuel injection, idle speed control, etc. are controlled from a single central unit. To...
Thanks to the integrated electronic engine control system (ECCS), ignition timing, fuel injection, idle speed control, etc. are controlled from a single central unit. To...
Possible causes of malfunctions
Controls, sensors and actuators Listed below are the main sensors and actuators that are associated with ECCS controls.
Controls, sensors and actuators Listed below are the main sensors and actuators that are associated with ECCS controls.
Emergency operation mode of the control unit
When the emergency mode of the control unit is activated as a result of damage to the main sensors, control is carried out according to a pre-set program, while the...
When the emergency mode of the control unit is activated as a result of damage to the main sensors, control is carried out according to a pre-set program, while the...
Self-diagnosis function
General description If during self-diagnosis faults are detected in the main sensors required for the operation of the ECCS unit, fault codes are written into the...
General description If during self-diagnosis faults are detected in the main sensors required for the operation of the ECCS unit, fault codes are written into the...
Checking the idle speed
Standard idle speed. (after warming up) Checking idle speed. Make sure that all loads are disconnected from the engine: air conditioning, power steering pump and various...
Standard idle speed. (after warming up) Checking idle speed. Make sure that all loads are disconnected from the engine: air conditioning, power steering pump and various...
Checking and adjusting the ignition timing angle
Using a current loop, connect the strobe light to the primary circuit of the ignition coil of cylinder #1. (If using a conventional strobe light, install the sensor on...
Using a current loop, connect the strobe light to the primary circuit of the ignition coil of cylinder #1. (If using a conventional strobe light, install the sensor on...
Checking the concentration of CO and HC
Since the vehicle uses a wide-range feedback fuel-air ratio learning function, no adjustment of CO and HC concentrations is required. Warm up the engine for 10 minutes...
Since the vehicle uses a wide-range feedback fuel-air ratio learning function, no adjustment of CO and HC concentrations is required. Warm up the engine for 10 minutes...
Adjusting idle speed (training air supply at idle speed)
This procedure should be performed after replacing the AAC valve, throttle chamber or ECCS control unit, and also if the idle speed differs from the norm or after...
This procedure should be performed after replacing the AAC valve, throttle chamber or ECCS control unit, and also if the idle speed differs from the norm or after...
Checking fuel pressure
Simple check Squeeze the fuel hose with your fingers and make sure you feel pulsations when the pump is running. Checking with a fuel pressure gauge Fuel pressure relief...
Simple check Squeeze the fuel hose with your fingers and make sure you feel pulsations when the pump is running. Checking with a fuel pressure gauge Fuel pressure relief...
Checking the fuel cut-off function
Warm up the engine. Disconnect the wiring connector from the injector and connect the test lamp. When the engine speed reaches 4000 rpm, release the accelerator pedal...
Warm up the engine. Disconnect the wiring connector from the injector and connect the test lamp. When the engine speed reaches 4000 rpm, release the accelerator pedal...
Standard input/output voltages of the ECCS control unit
Electrical diagram ECCS control unit connector pin assignment () The names of the signals on the contacts of the diagnostic connector are indicated (sR motors do not use...
Electrical diagram ECCS control unit connector pin assignment () The names of the signals on the contacts of the diagnostic connector are indicated (sR motors do not use...
Control unit — removal and installation
1. Remove the glove box and the lower section of the instrument panel on the front passenger side, see Chapter Interior equipment . 2. Unscrew the 3 mounting nuts of the...
1. Remove the glove box and the lower section of the instrument panel on the front passenger side, see Chapter Interior equipment . 2. Unscrew the 3 mounting nuts of the...
Crankshaft angle sensor (built into the distributor)
Examination Remove the distributor from the engine (leave the connector connected). Turn the ignition key to the "ON" position. Slowly rotate the crankshaft angle sensor...
Examination Remove the distributor from the engine (leave the connector connected). Turn the ignition key to the "ON" position. Slowly rotate the crankshaft angle sensor...
Mass air flow sensor
Examination Remove the sensor (without disconnecting the connector). Blow air from the air cleaner side (ignition key in the ON position) and check the change in output...
Examination Remove the sensor (without disconnecting the connector). Blow air from the air cleaner side (ignition key in the ON position) and check the change in output...
Coolant temperature sensor
Check the resistance between terminals No.1 and No.2 of the engine coolant temperature sensor. Resistance: At engine coolant temperature of approx. 20°C: approx. 2.5 kN...
Check the resistance between terminals No.1 and No.2 of the engine coolant temperature sensor. Resistance: At engine coolant temperature of approx. 20°C: approx. 2.5 kN...
Oxygen sensor
Removal 1. Disconnect the electrical wiring connector. 2. Unscrew the sensor using a key (special tool).
Removal 1. Disconnect the electrical wiring connector. 2. Unscrew the sensor using a key (special tool).
Knock Sensor — Removal
1. Remove the knock sensor mounting bolt from underneath the vehicle. 2. Disconnect the connector and remove the knock sensor. The installation is carried out taking...
1. Remove the knock sensor mounting bolt from underneath the vehicle. 2. Disconnect the connector and remove the knock sensor. The installation is carried out taking...
Throttle Position Sensor
Removal 1. Remove the air duct and air cleaner housing. 2. Disconnect the electrical wiring connector. 3. Remove the sensor and throttle switches. The installation is...
Removal 1. Remove the air duct and air cleaner housing. 2. Disconnect the electrical wiring connector. 3. Remove the sensor and throttle switches. The installation is...
Ignition switch — check
Using a tester, check the conductivity between the contacts in all positions of the ignition switch.
Using a tester, check the conductivity between the contacts in all positions of the ignition switch.
Refrigerant pressure sensor
Examination Check that the output voltage increases as the refrigerant pressure increases. Removal See chapter Heater and air conditioner.
Examination Check that the output voltage increases as the refrigerant pressure increases. Removal See chapter Heater and air conditioner.
Hydraulic steering switch
Examination Start the engine. Disconnect the hydraulic switch wiring connector. Check the conductivity between contacts 1-2 of the hydraulic switch. Steering wheel does...
Examination Start the engine. Disconnect the hydraulic switch wiring connector. Check the conductivity between contacts 1-2 of the hydraulic switch. Steering wheel does...
Injectors — checking
Check the resistance between terminals 1 and 2 of the fuel injectors of each cylinder. Resistance (for all cylinders): approx. 14.5 Σ (at room temperature) Removal...
Check the resistance between terminals 1 and 2 of the fuel injectors of each cylinder. Resistance (for all cylinders): approx. 14.5 Σ (at room temperature) Removal...
High Voltage Cables — Checking
Check the resistance of the cables. Resistance (at room temperature): Cylinder cable #1: approx. 11 kΣ Cylinder cable #2: approx. 10 kΣ Cylinder cable #3: approx. 8 kΣ...
Check the resistance of the cables. Resistance (at room temperature): Cylinder cable #1: approx. 11 kΣ Cylinder cable #2: approx. 10 kΣ Cylinder cable #3: approx. 8 kΣ...
Power transistor (built into distributor) — check
If the signal shape from the transistor measured by the oscilloscope is abnormal, use an analog tester to check the resistance between the corresponding contacts of the...
If the signal shape from the transistor measured by the oscilloscope is abnormal, use an analog tester to check the resistance between the corresponding contacts of the...
Ignition coil (built into the distributor) — check
Check the resistance values below (at room temperature): Resistance of the primary winding of the ignition coil (between contacts 5-6): 2,2 kΣ Resistance of the...
Check the resistance values below (at room temperature): Resistance of the primary winding of the ignition coil (between contacts 5-6): 2,2 kΣ Resistance of the...
EGR valve — checking and removal
Examination Check the resistance between contacts 1-2, 2-3, 4-5, 5-6 of the valve. Resistance: approx. 22 kΣ (at 20°C) Removal 1. Remove the EGR pipe. 2. Disconnect the...
Examination Check the resistance between contacts 1-2, 2-3, 4-5, 5-6 of the valve. Resistance: approx. 22 kΣ (at 20°C) Removal 1. Remove the EGR pipe. 2. Disconnect the...
ACC valve — checking and removal
Examination Check the resistance between contacts 1-2, 2-3, 4-5, 5-6 of the valve. Resistance: approx.27-33 kΣ (at 20°C) Removal 1. Remove the throttle chamber. 2....
Examination Check the resistance between contacts 1-2, 2-3, 4-5, 5-6 of the valve. Resistance: approx.27-33 kΣ (at 20°C) Removal 1. Remove the throttle chamber. 2....
Fuel Pump — Checking and Removing
Examination Check the resistance between contacts 1-3 of the fuel pump. Resistance: approx. 1Ω (at room temperature). Removal See ch. Accelerator, fuel system and...
Examination Check the resistance between contacts 1-3 of the fuel pump. Resistance: approx. 1Ω (at room temperature). Removal See ch. Accelerator, fuel system and...
Oxygen sensor heating element
Examination Check the resistance between contacts No.1 and No.3 of the sensor. Resistance: approx. 4.00 (at room temperature) Removal See above section " Oxygen sensor ".
Examination Check the resistance between contacts No.1 and No.3 of the sensor. Resistance: approx. 4.00 (at room temperature) Removal See above section " Oxygen sensor ".
Radiator Fans — Checking
Disconnect the connector from the coolant temperature sensor and start the engine. The fans should run.
Disconnect the connector from the coolant temperature sensor and start the engine. The fans should run.
Carbon Canister Purge Control Valve — Checking and Removing
Examination Check the resistance between contacts 1-2 of the valve. Resistance: approx. 32 Σ (at 20°C) Check the continuity between channels A and B using a hand vacuum...
Examination Check the resistance between contacts 1-2 of the valve. Resistance: approx. 32 Σ (at 20°C) Check the continuity between channels A and B using a hand vacuum...
Relay location
The ECCS relay and ignition coils, fuel pump relay, radiator fan relay and air conditioning relay are located in the relay box in the engine compartment.
The ECCS relay and ignition coils, fuel pump relay, radiator fan relay and air conditioning relay are located in the relay box in the engine compartment.
Checking the Evaporative Emission (EVAP) System
Tank with carbon filter Visually check for cracks or damage. Place your finger on port C, use the hand pump to apply vacuum through port A and ensure there is continuity...
Tank with carbon filter Visually check for cracks or damage. Place your finger on port C, use the hand pump to apply vacuum through port A and ensure there is continuity...
Checking the crankcase ventilation system
Crankcase ventilation valve Examination While the engine is running at idle speed, disconnect the hose from the PCV valve. If the valve is working properly, a hissing...
Crankcase ventilation valve Examination While the engine is running at idle speed, disconnect the hose from the PCV valve. If the valve is working properly, a hissing...
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Link in different formats to this section
TEXTHTMLBB Code
- General information
- Control devices
- User manual
- Power unit
- Petrol engine SR20DE
- Diesel engine YD25DDTi
- Cooling and lubrication system
- Engine management SR20DE
- Engine management YD25DDTi
- Power and exhaust system
- Transmission
- Automatic gearbox
- Drive and cardan shafts
- Transfer case
- Chassis
- Front suspension
- Rear suspension
- Brake system
- Steering
- Body
- Safety system
- Interior (internal elements)
- Exterior (external elements)
- Doors, locks and windows
- Heating and air conditioning
- Electrical equipment
- Equipment and devices
- Lighting system
- Windshield wipers and washers
- Electrical circuits
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