Frequency solenoid valve test C The C frequency solenoid valve is activated when the engine speed is above 730 rpm or the engine speed is below 730 rpm and the coolant temperature is above 60°C. It manages the vacuum for the throttle regulator. With...
Checking the idle stroke solenoid valve Solenoid valve for increasing x.x. activated when the gearbox is in gear or the engine is cold. It creates a vacuum for the internal diaphragm of the x.x. to increase the speed when there is a load on the engine. Open...
Start-up Leak Solenoid Valve Operation Test The valve serves to release the vacuum from the throttle opener during starter operation. Disconnect the vacuum hose 26 from the vacuum manifold. Connect the vacuum pump and create a vacuum. Turn the ignition key to the...
Function test of frequency solenoid valve A The frequency solenoid valve A, being part of the M-system, receives signals from the oxygen content sensor through the control unit and opens the air control valve A at the moment when the air-fuel mixture becomes...
Checking the performance of the solenoid. frequency valve B The frequency solenoid valve B, being part of the X-system, receives signals from the control unit and opens the air control valve B at the time when the air-fuel mixture becomes too rich. Disconnect the lower solenoid...
Checking the performance of the feedback control solenoid valve The feedback control system serves to provide stoichiometric (ideal) proportions in the mixture of air with fuel, which can significantly improve the operation of a three-way catalyst to reduce the exhaust of...
Function test of the solenoid air suction control valve When the solenoid air intake control valve is turned on, the action of vacuum in the manifold causes the diaphragm in the air intake valve to rise. This forces clean air from the air cleaner to the exhaust manifold...
Checking the performance of the control solenoid valve of the anti-burner The backfire control solenoid valve controls the backfire valve by applying vacuum to a diaphragm that keeps it closed. The afterburner valve senses the change in vacuum in the air intake manifold during gear shifting...
Checking the performance of the air leakage solenoid valve The air leakage solenoid valve provides additional air to the air intake manifold. The solenoid valve opens while the engine is idling and when the intake air temperature is high. The solenoid valve serves to reduce the...
Checking the performance of the EFE system (start fuel vaporizer) To improve the performance of the engine during its warm-up, a heater is built into the carburetor insulator in the primary hole. The maximum temperature of the heater is controlled by changing the electrical resistance...
Checking the performance of the EFE system control module Disconnect the 7-pin connector from the EFE control module. Check for an electrical connection between the Black terminal and ground on the main wiring harness. If there is no electrical connection, then the break in...
Checking the power supply (IG1) and ground Check for an electrical connection between ground and terminal Black 32. If there is no electrical connection, then a break in the Black wire between point G2 and terminal 32 of the control unit should be repaired. If...
Power supply test (Bat) Switch off the ignition. Measure the voltage between Yellow/Blue (+) 22 and Black (-) 32 contacts. If there is battery voltage, then the Bat power supply is normal. If there is no voltage, then check fuse number 1 (10...
Checking the starter signal This signal is sent to the control unit during starter operation. Measure voltage between 30 (Blue/Red (+)) and 32 (black (-)) contacts with the ignition key in the START position. If battery voltage is present, then...
Checking the performance of the oxygen sensor The oxygen sensor detects the oxygen content in the exhaust gases and sends signals to the control unit. Warm up the engine to operating temperature until the cooling fan turns on. Measure the voltage between 31 (White...
Checking the performance of the TA sensor temperature sensor (TA) air intake is a thermistor (resistor whose resistance depends on temperature). The resistance of the thermistor decreases as the temperature of the incoming air increases, as shown in the figure....
Checking the functionality of the TW sensor coolant temperature sensor (TW) is a thermistor (resistor whose resistance depends on temperature). The resistance of the thermistor decreases with increasing coolant temperature, as shown in the figure. Warm up the...
Checking the ignition coil signal This signal allows the control unit to monitor the engine speed. Turn on the ignition. Measure voltage between 11 (blue (+)) and 32 (black (-)) contacts. If there is battery voltage, then the ignition coil signal is...
Checking the performance of the speed pulse generator The signal generated by the speed pulse generator consists of 4 pulses corresponding to each turn of the speedometer cable. Block the rear wheels and apply the parking brake. Jack up the front of the vehicle and support...
Function test of vacuum switch A Vacuum switch A sends signals to the control unit when the vacuum falls below 80 mm. rt. Art. Disconnect the #2 vacuum hose from the vacuum manifold and connect a vacuum pump to the hose. Turn on the ignition. Measure...
Function test of vacuum switch C Vacuum switch C sends signals to the control unit when the vacuum falls below 60 mm. rt. Art. Disconnect the #7 vacuum hose from the vacuum manifold and connect a vacuum pump to the hose. Turn on the ignition. Measure...
Function test of vacuum switch B Vacuum switch B sends signals to the control unit when the vacuum falls below 30 mm. rt. Art. Disconnect the #7 vacuum hose from the vacuum manifold and connect a vacuum pump to the hose. Turn on the ignition. Measure...
Clutch Switch Signal Function Test Turn on the ignition. Measure the voltage between 16 (pink (+)) and 32 (black (-)) contacts. If the voltage is less than 3 V, then see item A), if not - item B). A) Press the clutch pedal. Measure the voltage between 16...
Checking the automatic transmission position signal This signal is sent to the control unit when the transmission is in neutral or PARK. Turn on the ignition. While watching the automatic transmission gear indicator, shift the gear selector in all positions. If the...
Checking the air conditioner switch signal This signal is sent to the control unit when there is a need for the electrical circuits of the air conditioner (air conditioner switch). Start the engine. Turn on the compressor. Turn on the air conditioner (air...