Exhaust system service The exhaust system consists of the exhaust manifold or manifolds, catalytic converter, muffler and exhaust pipe. The elements of the exhaust system are attached to the body with brackets and hanging clips. Exhaust pipe...
Places of installation of units of the toxicity reduction system Mounting locations for emission reduction system units on a 4-cylinder engine 1. Diagnostic connector; 2. Vacuum distributor controlling the recirculation valve; 3. Recirculation valve; 4. Absolute pressure sensor in...
Technical characteristics of the toxicity control system Oxygen sensor voltage Open loop sensor 0.1 - 0.2 V Closed loop sensor 0.1 - 0.9 V crankshaft rotation sensor resistance 4-cylinder engines - on a warm engine 985 - 1600 Ohm - on a cold engine 1265 - 1890 ohms 6-cylinder...
OBD II Emissions Diagnostic System The OBD II system is designed to register and store sensor failures of the toxicity reduction system, as well as to check the status of sensors and actuators. Location of the 16-pin diagnostic connector Access to the...
Computer OBD II system (Powertrain Control Module) Typical PCM module mount 1. Module; 2. Facing of a sidewall; 3. Facing the nut; 4. connector; 5. Bottom cover; 6. Bottom panel Removing 1. Disconnect the battery from the ground. 2. Remove the glove box. 3. Disconnect...
Throttle position sensor — check and replace Examination 1. Disconnect connector (The sensor is located on the throttle body) and check for 5V between pins 2 (–) and 1 (+) with the ignition on. The numbers indicate the pins of the connector. 2. Connect the...
Manifold absolute pressure sensor Four-cylinder engines Examination 1. Disconnect connector (the sensor is located on the bulkhead of the engine compartment) and check for 5V between pins 1 (–) and 3 (+) with the ignition on. If there is no voltage,...
Mass Air Flow Sensor — Check and Replace Engines v6 Mass air flow sensor 1. Sensor; 2. connector; 3. Gasket Hot-wire sensor, mounted on the air duct. Examination 1. Disconnect the connector and, with the ignition on, check for battery voltage at terminal 4. If...
Intake air temperature sensor (IAT sensor) The IAT sensor is a thermistor whose resistance increases as the temperature drops. 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) Location of the ECT sensor on 4-cylinder engines Location of the ECT sensor on 6-cylinder engines The ECT sensor is a thermistor whose resistance increases as the temperature drops. Examination 1. To check, disconnect...
Crankshaft rotation sensor — check and replace On 4-cylinder engines, the sensor is mounted under the toothed belt cover, on V6 engines - above the crankshaft pulley. Mounting location of the crankshaft rotation sensor on 4-cylinder engines 1. Wire; 2. connector; 3....
Camshaft rotation sensor — check and replace 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 — check and replace The contact pressure sensor is mounted on the fitting of the hydraulic booster pump. The sensor is designed to maintain the idle speed of the engine during a parking maneuver. The sensor is faulty if the engine stalls...
Oxygen content sensor in exhaust gases Oxygen sensor 1. seat connector; 2. Secondary sensor connector; 3. Case; 4. Collar; 5. First sensor The oxygen sensor is designed to generate a signal, on the basis of which the computer determines the oxygen content in...
Knock sensor — check and replace The knock sensor is designed to detect detonation 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 — check and replace The sensor is designed to control the transmission and control fuel consumption. The signal from the sensor is a sequence of pulses. The sensor is attached to the transmission housing. Examination 1. Disconnect...
Idle air bypass valve (IAC valve) Bypass air valve 1. Bypass air valve; 2. Gasket; 3, 9. Vacuum hose; 4. Fast idle valve hose; 5. Bus ground connection; 6. Wire to ground; 7. Diagnostic socket.; 8. Bracket Examination With a warm engine idling, bridge...
Suction channel selection system (ACIS system) The suction channel selection system ensures that the air supply channel is switched depending on the engine load. The system drive is controlled by vacuum in the suction manifold. Vacuum lines of the ACIS system 1....
Exhaust gas recirculation system The system is designed to reduce the content of nitrogen oxides in exhaust gases. This is achieved by lowering the combustion temperature while redirecting part of the gases into the combustion chamber. The set of...
Gasoline vapor recovery system — check and replace Gasoline vapor recovery system (4 cylinder engine) 1. Spool valve; 2. Control valve; 3. Recirculation valve; 4. Converter; 5. Fitting for servicing the gasoline vapor absorption system; 6, 19, 20. Pneumatic distributor;...
Converter — check and replace Converter for vehicles with 4-cylinder engine 1, 6. Gasket; 2. Neutralizer; 3. Front exhaust pipe; 4, 5. Bracket Converter for vehicles with 6-cylinder engine 1, 6, 8. Gasket; 2. Front exhaust pipe; 3, 7. Bracket; 4....
How to keep the catalyst in working condition Replacing a failed catalyst will not be cheap, so it would be nice to know in advance what problems there are with it, how things are with them in the spare parts market. Until recently, we knew only the following about...