Table of contents: Head pressure sensor ↓ Transistor module ↓ Mixture composition correction valve ↓ Solenoid valves ↓ Throttle switch ↓ Coolant temperature sensor ↓ Control unit ↓ Crankshaft angle sensor ↓ Clutch release sensor ↓ Transmission neutral position sensor ↓ Idle speed correction switch when…↓ Vehicle speed sensor ↓
Head pressure sensor
1. The sensor is mounted on the left suspension cap.
2. Disconnect the battery from ground.
3. Loosen the screws, lift the sensor and disconnect the hose (2) and connector (1), remove the sensor.
4. Installation is carried out in reverse order.
Transistor module
Cm. subsection 7.7.6.
Mixture composition correction valve
See. subsection 6.1.10.2.
Solenoid valves
See. subsection 6.1.10.2, pp. 18–26.
To expand the work space, remove the air filter.
Throttle switch
Switch location
The throttle switch is mounted on the right side of the carburetor.
1. Remove two screws.
2. Disconnect the wires and remove the switch.
3. When installing, adjust the switch.
4. To adjust, warm up and stop the engine, disconnect the connector with the switch wires.
5. Connect the terminals of the shut-off valve with jumpers and connect an ohmmeter (the arrows indicate the terminals for connecting the ohmmeter).
6. Start the engine, bring the speed up to 2000 rpm and slowly reduce it, watching the ohmmeter, which should show a closed circuit, and at 1200 rpm - an open circuit (the switch is triggered).
7. If necessary, adjust the switch by bending the tongue.
8. Stop the engine and connect the connector.
Coolant temperature sensor
See. subsection 4.6.3.
Control unit
The unit is mounted either under one of the front seats or under the central section of the dashboard.
1. Disconnect the battery from ground.
2. Remove the seat or center section.
3. Loosen the screws and remove the unit, disconnect the wiring.
4. When installing, make sure all connections are correct.
Crankshaft angle sensor
The sensor is part of the ignition distributor design and cannot be removed separately.
If the sensor fails, the entire distributor assembly is replaced (see subsection 7.7.4).
Clutch release sensor
Mounted on the pedal block bracket.
1. Disconnect the battery from ground, remove the bottom panel.
2. Disconnect the wires, unscrew the nut and remove the switch.
3. When installing, check the clutch pedal adjustment and adjust the sensor.
4. To adjust, connect an ohmmeter to the sensor terminals and adjust the position so that when the pedal is released there is a break, and when it is slightly pressed there is a closed circuit.
5. Tighten the nut.
Transmission neutral position sensor
See. subsection 9.1.4.
Idle speed correction switch when operating the power steering
The switch is mounted in the power steering circuit, in the right rear part of the engine compartment.
1. Place the wheels in a straight-ahead position and disconnect the battery from ground.
2. Disconnect the connector from the switch.
3. Unscrew the switch and plug the hole in the tube, remove the seal.
4. Replace the seal when installing.
Vehicle speed sensor
The sensor is mounted in the speedometer.