Crankcase ventilation system Prevents the ingress of crankcase gases into the atmosphere due to the afterburning of these gases mixed with air in the engine combustion chambers. The main causes of system failure are a clogged hose, or a sticking...
Gasoline vapor recovery system Provides absorption of gasoline vapors in a special tank with an absorber and prevents them from entering the atmosphere. On the vehicles in question, a purge solenoid valve is provided for ventilation of the fuel tank,...
Recirculation system — general information Designed to reduce the temperature of fuel combustion and reduce emissions of nitrogen oxides. This is achieved by redirecting part of the exhaust gases into the combustion chamber. The system includes a recirculation...
Recirculation valve — check, removal and installation 1. On a warm engine idling, create a vacuum of 8 mm. rt. post on the valve fitting. If the idle speed drops by 100 rpm when a vacuum is created, and when the vacuum is removed, the speed is restored, then the valve is...
Engine processor unit — removal and installation Processor engine block (ECM on manual transmission vehicles or PCM on automatic transmission vehicles) provides automatic control of all engine systems (including power, ignition, etc.). On 1995 Odysseys, a separate...
Oxygen concentration sensor in exhaust gases The sensor monitors the oxygen content in the exhaust gases and generates an output voltage of 0.1 V (high oxygen content, lean mixture) up to 0.9 V (low oxygen content, enriched mixture). The changing output voltage...
Oxygen sensor — removal and installation 1. Raise the vehicle. 2. Disconnect the connector from the sensor, being careful as the sensor head is fragile. 3. Unscrew the sensor from the exhaust pipe with a special key. 4. Installation is carried out in the...
Idle air corrector (IAC valve) The valve provides redirection of part of the air flow around the throttle pipe. The valve is controlled by the engine processor unit. The valve limiter screw sets the minimum airflow corresponding to normal idle speed....
Coolant temperature sensor (ECT sensor) The coolant temperature sensor is a thermistor (resistor whose resistance value depends on temperature). As the temperature of the sensor decreases, its resistance increases and vice versa. In the event of a sensor...
Intake air temperature sensor (IAT sensor) The sensor is mounted on the suction manifold. The resistance of the sensor must correspond to that shown on the graph (photo). To remove the sensor, disconnect the battery from the ground, disconnect the connector and...
Manifold absolute pressure sensor (MAP sensor) The MAP sensor provides information to the PCM about engine load (about vacuum in the suction manifold). The signal from the sensor varies from 0.5 to 3 V. The signal voltage from the sensor must correspond to that...
Throttle Position Sensor (TPS — Sensor) The throttle position sensor is located on the end of the throttle shaft. The signal from this sensor is used by the processor unit to adjust the composition of the mixture and the ignition timing. The sensor cannot be...
Crankshaft angle sensor — check, removal and installation The sensor determines the engine speed and the angle of rotation of the crankshaft, on the basis of which the ignition timing is determined and corrected. On Odyssey models, the sensor is also used to detect misfiring...
Crankshaft speed fluctuation sensor (CKF sensor) The CKF sensor is designed to monitor interruptions in the operation of cylinders. The sensor generates a signal if the crankshaft speed fluctuation goes beyond certain limits. The resistance between the sensor leads...
Knock sensor A piezoelectric type sensor that monitors the occurrence of detonation in the engine cylinders. The sensor can only be checked with a scanner. The reason for the abnormal operation of the sensor may be incorrect...
Vehicle speed sensor (VSS sensor) The sensor generates a signal for the speed of rotation of the axle shaft, which is fed to the speedometer and to the PCM unit. Resistance between sensor leads. should be 190-250 ohms. To remove the sensor, disconnect...
Location of emission control and engine control systems Arrangement of devices and instruments of systems for reducing toxicity and automatic control of the engine (CR-V): 1. Crankshaft rotation sensor (TDC sensor); 2. Coolant temperature sensor; 3. Throttle angle sensor; 4....