Checking the components of the variator control system
Note:
- - The procedure for checking the accelerator pedal position sensor is given in the chapter "fuel injection system".
- - For a detailed procedure for checking the engine start inhibit switch, see "Checking and adjusting the engine start inhibit switch and the CVT control cable".
- The procedure for checking the brake light switch is given in chapter "Brake system".
1. Checking the start inhibit switch.
Check the start inhibit switch circuit according to the table below.
Table. Checking the switch.
Selector position | Circuit closed between pins |
R | 3-8 and 9-10 |
R | 7-8 |
N | 4-8 and 9-10 |
D | 1 -8 |
Ds | 5-8 |
Holes for measuring pressure in the lines of the hydraulic control system of the variator. DA - converter inlet pressure, DR - converter outlet pressure, FWD - forward clutch, REV - reverse brake, RED - RED pressure.
2. Checking the variator control relay.
A) Remove the relay.
b) Connect the voltmeter and power supply as shown.
V) When connecting and disconnecting the power supply wire, check the continuity between the terminals "1" And "4" connector.
Power supply | Conductivity |
Connected | Eat |
Disconnected | No |
G) Replace relay if necessary.
3. Checking the solenoid valves.
A) Disconnect the connector and remove the solenoid valve block cover.
Solenoid valve block. 1 - solenoid valve for controlling the torque converter lock-up clutch; 2- pressure control solenoid valve torque converter clutch; 3- switching; 4- solenoid valve for pressure control in the fuel line
The location of the components of the variator control system. A - turbine shaft speed sensor, B - driven pulley speed sensor, C - main line pressure sensor, D - control relay, E - variator fluid pressure sensor, F - drive pulley speed sensor, G - start inhibit switch, H - working fluid temperature sensor, I - accelerator pedal position sensor, J - brake light switch, K - diagnostic connector, L - selector position sensor (models with manual shift mode), M - electronic engine and variator control unit.
b) Measure the resistance at the connector terminals of each solenoid valve.
Rated resistance (at 20°C) - 2.9 - 3.5 ohms
V) If the measured resistance is not within specification, replace the faulty solenoid valve.
Note: If necessary, replace the solenoid valve block assembly.
4. Checking the CVT fluid temperature sensor.
A) Remove the sensor.
b) Using an ohmmeter, measure the resistance between the leads "1" And "2" sensor connector at different temperatures of the working fluid.
Table. Rated values.
Temperature | Resistance |
0°C | 16.70-20.50 kOhm |
20°C | 7.30 - 8.90 kOhm |
Table. Rated values.
Temperature | Resistance |
40°C | 3.40 - 4.20 kOhm |
60°С | 1.90-2.20 kOhm |
80°С | 1.00-1.20 kΩ |
100°C | 0.57 - 0.69 kOhm |
Note: when the working fluid is heated to a temperature of 125°C, the range indicator "N" will start flashing, but when the temperature drops to 115°C, the flashing will stop.
V) If a malfunction is detected in the fluid temperature sensor, replace the sensor.
5. Checking the selector position sensor.
Check the condition of the circuit between the terminals of the sensor connector at various positions of the selector according to the table below.
Table. Checking the sensor.
6. (Models with steering wheel up/down switch) Checking the gear selector position sensor on the steering wheel.
A) Remove the lower steering wheel cover.
b) Disconnect the connector from the sensor.
V) Using an ohmmeter, measure the resistance between terminals ''1" And "2" sensor connector.
Table. Nominal values.
Switch position | Resistance |
overdrive | 990 - 1010 Ohm |
Downshift | 388 - 396 Ohm |
Checking and adjusting the engine start inhibit switch and the CVT control cable
1. Checking the condition of the circuit at the terminals of the engine start inhibit switch connector.
A) Disconnect the start inhibit switch connector.
b) Check the condition of the circuit between the terminals of the connector at various positions of the switch according to the table below.
Table. Checking the switch.
2. Check the compliance of the included gears with each position of the variator selector and the correct operation of the variator in each of the ranges. Make adjustments if necessary.
3. Set the variator selector to position "N".
4. Loosen the adjusting nut securing the CVT control cable to the start inhibit switch lever.
5. Place the hand lever in neutral position ("N").
6. Loosen the bolts securing the start inhibit switch and turn it until the holes in the switch and in the start inhibit switch lever are aligned (section "A-A" on the image).
Adjustment of the CVT control cable and start inhibit switch. 1 - bolts, 2 - start inhibit switch lever, 3 - start inhibit switch.
7. Without changing the position of the start inhibit switch, tighten the mounting bolts.
Tightening torque - 10 - 12 Nm
8. Lightly tension the CVT control cable in the direction of the arrow in the figure and tighten the adjusting nut.
Tightening torque - 10 - 14 Nm
Adjustment of the CVT control cable and start inhibit switch (continuation). 1 - adjusting nut, 2 - start inhibit switch lever.
9. Make sure the CVT selector is in position "N".
10. Check the correspondence of the included gears to each position of the variator selector and the correct operation of the gearbox in each of the ranges.
Checking the operation of the variator selector
1. Raise the parking brake lever.
2. Move the variator selector from position to each position and check that the selector shifts are smooth and crisp.
3. Check that the engine starts when the selector is in the "R" or "N", and that the engine cannot be started when the selector is in other positions.
4. Start the engine, release the parking brake lever and check the operation of the transmission control mechanism.
(Models without manual shift mode) When moving the selector from position "N" V "D", "Ds" or "L" the car must move forward, and when the selector is moved to the "R" the vehicle must move in reverse.
(Models with manual shift mode) When moving the selector from position "N" V "D", "Ds" or "1" - "6" the car must move forward, and when the selector is moved to the "R" the vehicle must move in reverse.
5. Stop the engine.
6. Turn the ignition key to position "ON", move the variator selector from position "R" into position "R" and make sure that when the variator selector is in position "R", the reversing lights come on and the buzzer sounds.
Note: the ignition lock and selector interlock systems do not allow the inclusion of unacceptable modes of operation of the variator, if switching can lead to breakage, therefore, to move the selector from the position "R" to other positions, you need to press the brake pedal and turn the key in the ignition switch to any position, except "LOCK".
Models without manual shift mode.
Models with manual shift mode.
Checking and adjusting the ignition lock mechanism
1. Checking the operation of the ignition lock system.
A) Check that if, with the brake pedal depressed, the ignition key is in the "LOCK" or extracted, then the selector cannot be moved from the position "R" to any other without pressing the selector latch.
b) Check that if the ignition key is in any position other than "LOCK", then the selector can be translated from the position "R" to any other when the brake pedal is depressed and the release button is pressed. Check up smoothness of movement of the selector.
V) Check that it is not possible to turn the ignition key to the "LOCK" in any position of the selector, except "R" (brake pedal released). Check that the ignition key can be smoothly moved to the position "LOCK", when the selector is in position "R" (brake pedal released).
G) If the operation of the system differs from the above, adjust the ignition lock cable.
2. Adjustment of a cable of blocking of the lock of ignition.
A) Remove the bottom of the center console (see chapter "Body").
b) Set the selector to position "R" and the ignition key to position "LOCK".
V) Loosen the nut securing the ignition lock cable.
G) Slightly pull the locking cam in the direction "A", indicated by the arrow in the figure and, holding it in this position, tighten the nut securing the ignition lock cable.
d) Install the bottom of the center console (see chapter "Body").
Checking and adjusting the CVT selector lock system
1. Checking the operation of the selector lock system.
A) Check that if, with the brake pedal depressed, the ignition key is in the "ACC", then the selector cannot be translated from the position "R" to any other without pressing the selector latch.
b) Check that if, with the brake pedal depressed, the ignition key is in the "ACC", then the selector can be translated from the position "R" to any other by pressing the selector latch.
V) Check that if, with the brake pedal released and the release button pressed, the ignition key is in the "ACC", then the selector can be translated from the position "R" into position "R".
G) If the operation of the system differs from the above, then adjust the selector lock cable.
2. Adjusting the CVT selector lock cable.
A) Remove the bottom of the center console (see chapter "Body").
b) Set the selector to position "R"
V) Loosen the selector lock cable nut.
G) Adjust the position of the cable so that its edge is located in the middle of the red mark of the locking cam, as shown in the figure.
d) Tighten the cable nut.
e) Install the bottom of the center console (see chapter "Body").
CVT control cable adjustment
1. Remove the battery and battery bracket.
2. Move the variator selector to position "N"
3. Loosen the CVT control cable nut.
4. Lightly pull the cable in the direction "A", indicated by the arrow in the figure and, holding it in this position, tighten the nut for fastening the variator control cable.
Tightening torque - 12±2 Nm
5. Install the battery bracket and battery.