Toyota CH-R Service Manual: Mechanical System Tests

MECHANICAL SYSTEM TESTS

SHIFT TIME LAG TEST

NOTICE:

  • This test must be conducted after checking and confirming that the engine is operating normally.
  • Perform this test while the CVT fluid temperature is between 50 and 100°C (122 and 212°F).
  • Perform this test with the A/C off.
  • Perform this test with the AUTO function (shift-linked function) of the electronic parking brake system off.

HINT:

When the shift lever is moved while the engine is idling, there will be a certain time lapse or lag before the shock can be felt. This is used for checking the condition of the clutches and brakes.

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

Powertrain > Engine and ECT > Data List

Tester Display

A/T Oil Temperature 1

(e) Drive the vehicle until the CVT fluid temperature has reached 50 to 100°C (122 to 212°F).

(f) Allow the engine to idle with the air conditioning off.

(g) Apply the parking brake and keep the brake pedal depressed firmly.

(h) Check the D position time lag.

(1) Move the shift lever to N and wait for 1 minute.

(2) Move the shift lever to D and measure the time until the shock is felt.

(3) Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests.

Standard Value:

D position time lag is less than 1.5 seconds.

(i) Check the R position time lag.

(1) Move the shift lever to N and wait for 1 minute.

(2) Move the shift lever to R and measure the time until the shock is felt.

(3) Repeat the 2 steps above 3 times, and calculate the average time of the 3 tests.

Standard Value:

R position time lag is less than 1.5 seconds.

CAUTION:

  • Do not perform a stall test if there are any people or objects near the vehicle.
  • The vehicle could begin moving suddenly, resulting in a serious accident.
  • Do not perform a stall test if any wheel chocks are out of position.
  • The vehicle could begin moving suddenly, resulting in a serious accident.
  • Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.
  • The vehicle could begin moving suddenly, resulting in a serious accident.

NOTICE:

  • This test must be performed after checking and confirming that the engine is normal.
  • Perform this test with the CVT fluid temperature between 50 and 100°C (122 and 212°F).
  • Perform this test with the air conditioning off.
  • Do not perform the stall speed test for more than 5 seconds.
  • When performing the stall speed test more than once, make sure to wait 15 seconds or more between tests.
  • Perform this test with the AUTO function (shift-linked function) of the electronic parking brake system off.

STALL SPEED TEST

HINT:

This test is to check the overall performance of the engine.

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

Powertrain > Engine and ECT > Data List

Tester Display

A/T Oil Temperature 1

(e) Drive the vehicle until the CVT fluid temperature has reached 50 to 100°C (122 to 212°F).

(f) Allow the engine to idle with the air conditioning off.

(g) Chock all 4 wheels.

(h) Enter the following menus: Powertrain / Engine and ECT / Active Test / Connect the TC and TE1.

Powertrain > Engine and ECT > Active Test

Tester Display

Connect the TC and TE1

(i) Apply the parking brake and keep the brake pedal firmly depressed with your left foot.

HINT:

When the electric parking brake switch assembly is pulled to the lock side 2 times (2 lock operations), the maximum amount of braking force is applied.

(j) Move the shift lever to D.

(k) Depress the accelerator pedal all the way down with your right foot.

(l) Read the engine speed (stall speed) and release the accelerator pedal immediately.

Stall Speed:

2200 +/- 300 rpm

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