Car exhaust system Toyota Camry 2 (XV20)

Exhaust system maintenance
The exhaust system consists of an exhaust manifold or manifolds, a catalytic converter, a muffler, and an exhaust pipe. The exhaust system components are attached to the body using brackets and hanger clamps. Exhaust...

Installation locations of emission control system units
Mounting locations of emission control system units on a 4-cylinder engine 1. Diagnostic connector; 2. Vacuum distributor controlling the recirculation valve; 3. Recirculation valve; 4. Manifold Absolute Pressure...

Technical characteristics of the toxicity reduction system
Oxygen sensor voltage The sensor is connected in an open-loop circuit 0.1 – 0.2 V The sensor is connected in a closed-loop circuit 0.1 – 0.9 V Crankshaft speed sensor resistance 4-cylinder engines - on a warm engine 985...

OBD II Emissions Diagnostic System
The OBD II system is designed to register and store failures of emission control system sensors, as well as to check the condition of sensors and actuators. Location of the 16-pin diagnostic connector Access to the...

OBD II system computer (Powertrain Control Module)
Typical PCM module mounting 1. Module; 2. Side paneling; 3. Threshold lining; 4. Connector; 5. Bottom cover; 6. Bottom panel Removal 1. Disconnect the battery from ground. 2. Remove the glove box. 3. Disconnect the...

Throttle Position Sensor — Checking and Replacing
Examination 1. Disconnect the connector (the sensor is located on the throttle body) and check for 5 V between terminals 2 (–) and 1 (+) with the ignition on. The connector terminals are indicated by numbers. 2. Connect...

Manifold Absolute Pressure Sensor
Four-cylinder engines Examination 1. Disconnect the connector (the sensor is located on the engine compartment bulkhead) and check for 5 V between terminals 1 (–) and 3 (+) with the ignition on. If there is no voltage,...

Mass Air Flow Sensor — Checking and Replacing
V6 engines Mass Air Flow Sensor 1. Sensor; 2. Connector; 3. Gasket The sensor is a hot-wire anemometer and is mounted on an air duct. Examination 1. Disconnect the connector and, with the ignition on, check for voltage...

Intake Air Temperature Sensor (IAT Sensor)
The IAT sensor is a thermistor whose resistance increases as the temperature decreases. Examination 1. On 4-cylinder engines, disconnect the connector from the sensor, which is located inside the air filter, check the...

Coolant Temperature Sensor (ECT Sensor)
ECT sensor location on 4-cylinder engines ECT sensor location on 6-cylinder engines The ECT sensor is a thermistor whose resistance increases as the temperature decreases. Examination 1. To check, disconnect the...

Crankshaft speed sensor — checking and replacement
On 4-cylinder engines, the sensor is mounted under the timing belt cover; on V6 engines, it is mounted above the crankshaft pulley. Mounting location of the crankshaft speed sensor on 4-cylinder engines 1. Wire; 2....

Camshaft Rotation Sensor — Checking and Replacing
On 4-cylinder engines, the sensor is mounted at the rear of the cylinder head; on V6 engines, at the front of the cylinder head. Examination 1. Disconnect the wiring connector and check the resistance of the sensor (in...

Power steering pressure contact sensor — checking and replacing
The contact pressure sensor is mounted on the nipple of the power steering pump. The sensor is designed to maintain engine idle speed during parking maneuvers. The sensor is faulty if the engine stalls or continues to...

Exhaust Gas Oxygen Sensor
Oxygen sensor 1. Seat connector; 2. Secondary sensor connector; 3. Cover; 4. Clamp; 5. First sensor The oxygen sensor is designed to generate a signal, based on which the computer determines the oxygen content in the...

Knock Sensor — Checking and Replacing
The knock sensor is designed to register knocking in the cylinders and reduce the ignition timing. On 4-cylinder engines, the sensor is screwed into the cylinder block under the head; on 6-cylinder engines, there are 2...

Vehicle Speed Sensor — Checking and Replacing
The sensor is designed to control the transmission and monitor fuel consumption. The signal from the sensor is a sequence of pulses. The sensor is mounted on the transmission housing. Examination 1. Disconnect the...

Idle Air Control Valve (IAC valve)
Air bypass valve 1. Air bypass valve; 2. Gasket; 3, 9. Vacuum hose; 4. Fast idle valve hose; 5. Ground connection bus; 6. Ground wire; 7. Diagnostic connector.; 8. Bracket Examination With the engine idling and warmed...

Suction Channel Selection System (ACIS system)
The intake channel selection system switches the air supply channel depending on the engine load. The system drive is controlled by the vacuum in the intake manifold. Vacuum lines ACIS-system 1. Idle air bypass valve;...

Crankcase ventilation system
Crankcase ventilation system 1. Spool valve; 2. Fresh air; 3. Crankcase gases

Exhaust gas recirculation system
The system is designed to reduce the content of nitrogen oxides in exhaust gases. This is achieved by reducing the combustion temperature by redirecting part of the gases into the combustion chamber. The set of system...

Evaporative Emission System — Checking and Replacing
Gasoline vapor recovery system (4-cylinder engine) 1. Spool valve; 2. Control valve; 3. Recirculation valve; 4. Neutralizer; 5. Nipple for servicing the gasoline vapor absorption system; 6, 19, 20. Pneumatic...

Neutralizer — Checking and Replacing
Neutralizer for a car with a 4-cylinder engine 1, 6. Gasket; 2. Neutralizer; 3. Front exhaust pipe; 4, 5. Bracket Neutralizer for a car with a 6-cylinder engine 1, 6, 8. Gasket; 2. Front exhaust pipe; 3, 7. Bracket; 4....

How to keep your catalytic converter in working order
Replacing a failed catalytic converter will not be cheap, so it would be good to know in advance what problems there are with it, and what the situation is with them on the spare parts market. Until recently, we knew...

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