Gasoline engine management Toyota Corona 9 (T190)

Main relay of the fuel injection system
Schemes for switching on the main relay of the injection system: 1 - storage battery, 2 - main fuse-link 2.0L, 3 - fuse-link AM2 (30 A), 4 - ignition switch, 5 - EFI fuse (15 A), 6 - IGN fuse (7.5 A), 7 - main relay of...

Fuel pump relay switch
Schemes for switching on the fuel relay-switch: 1 - diagnostic connector, 2 - to the electronic control unit; to the main relay of the fuel injection system, 3 - to the ignition switch (models with manual transmission);...

Coolant and air intake temperature sensor
Characteristics of the coolant temperature sensor Note: Characteristic of the coolant temperature sensor for engines with a lean-burn combustion system) has somewhat tighter tolerance limits. Checking the coolant...

Manifold absolute pressure sensor
1. Check the supply voltage of the absolute pressure sensor in the intake manifold. A) Disconnect the sensor connector. b) Turn on the ignition. Using a voltmeter, measure the voltage between the terminals of the sensor...

Variable resistor — check
1. Check the supply voltage of the variable resistor. Disconnect the connector, turn on the ignition and measure the voltage between the terminals of the electronic control unit with a voltmeter "VCC" (or "VC") And "E2"...

Checking the knock sensor
1. Disconnect (-) wire from the negative battery terminal. 2. Remove the knock sensor by first disconnecting its connector. 3. Using an ohmmeter, verify that there is no continuity between the sensor terminal and the...

Pneumatic valve to increase the idle speed when the air conditioner is turned on
1. Remove the valve. 2. Check valve for open circuit. Using an ohmmeter, verify that there is no open circuit in the valve winding by measuring its electrical resistance. Valve winding resistance value (cold) is 4 ohms....

Electropneumatic valve system with variable intake manifold geometry
1. Remove the valve. 2. Check the valve. A. Using an ohmmeter connected to the valve connector terminals, verify that there is no open circuit in the valve winding by measuring its electrical resistance. Nominally»...

Oxygen Sensor — Check
Scheme of switching on the oxygen sensor (3S-FE, 4A-FE, 4S-FE, 7A-FE): 1 - oxygen sensor, 2 - to the main relay of the fuel injection system, 3 - diagnostic connector, 4 - electronic control unit 1. Warm up the engine...

Lean mixture sensor (4A-FE engine with Lean Burn system)
Lean mixture sensor switching circuit: 1 - lean mixture sensor, 2 - to the main relay of the ignition system, 3 - diagnostic connector, 4 - electronic control unit 1. Warm up the engine to normal operating temperature....

Electropneumatic valve for exhaust gas recirculation (3S-FE, 4S-FE, 5E-FE)
1 - to the pressure modulator of the exhaust gas recirculation system, 2 - from the exhaust gas recirculation system valve, 3 - electro-pneumatic valve. Valve switching circuit. 1 - electro-pneumatic valve, 2 - to the...

Air control valve (5E-FE)
1. Remove valve . 2. Check the valve. A) Using an ohmmeter, verify that there is no open circuit in the valve winding by measuring its electrical resistance. The resistance value of the valve winding (cold) is: 30-33...

Throttle damper (5E-FE models with automatic transmission)
1. Using an ohmmeter connected to the terminals of the valve connector, make sure that there is no open circuit in the valve winding by measuring its electrical resistance. Valve winding resistance value (V "cold"...

Fuel cut-off system in forced idle modes
Checking the speed corresponding to turning off and on the fuel control valve. 3S-FE, 4A-FE. 4S-FE and 7A-FE 1. Start the engine and warm it up to normal operating temperature. 2. Connect a tachometer to the IG...

Fuel pressure control system (3S-GE, 5E-FE)
Scheme of inclusion of system elements. 1 - electronic engine and automatic transmission control unit, 2 - electropneumatic valve of the fuel pressure control system, 3 - to the main relay of the fuel injection system....