Note:
- - the check should be carried out at normal operating temperature of the working fluid (50-80°C);
- - the duration of each check should not exceed five seconds.
- - the test should be carried out by two technicians: one should observe the wheels outside the car, and the second should carry out the test itself inside the car.
1. RPM measurement:
A) Block all wheels with blocks.
b) Connect a tachometer.
V) Apply the parking brake.
G) Press the brake pedal all the way.
Table. Voltage at the connector terminals of the selector lock control unit
d) Start the engine.
e) Move the gear selector to the position "D". Press the accelerator pedal all the way. Take a quick reading of the tachometer and compare it with the nominal values.
Rotational speed with a fully braked vehicle:
- A241L - 2050-2350 rpm
- A245E (until 1994) — 2350-2650 rpm
- A245E (since 1994, 4A-FE) — 2050-2450 rpm
- A245E (since 1994, 7A-FE) - 2300-2700 rpm
- A241E - 2200-2500 rpm
- A540N - 2220-2520 rpm
Caution: If the rear wheels start spinning before the RPM reaches the required value for this test, then release the accelerator pedal and stop the test.
and) Repeat the test with the selector position in the range "R".
2. Analysis of the test results.
A) If the speed for both cases is the same, but less than required, then either the engine does not develop full power, or the freewheel of the torque converter reactor is damaged.
b) If the rotational speed is in the range "D" higher than required, then:
- too low pressure in the main line,
- there is a slip in the forward clutch,
- defective freewheel No. 2,
- Faulty freewheel reduction clutch (increasing) planetary row.
V) If the rotational speed is in the range "R" above required:
- too low pressure in the main line,
- there is a slip in the reverse clutch,
- slippage in the brake of the first gear and reverse gear,
- Faulty freewheel reduction clutch (increasing) planetary row.
G) If the rotational speed is higher than required in both ranges, then;
- too low pressure in the main line,
- the level of the working fluid in the transmission does not correspond to the required value,
- Faulty freewheel reduction clutch (increasing) planetary row.