MECHANICAL SYSTEM TESTS
STALL SPEED TEST
HINT:
This test is to check the overall performance of the engine and transaxle.
CAUTION:
NOTICE:
(a) Connect the Techstream to the DLC3.
(b) Drive the vehicle until the transaxle fluid temperature has reached 50 to 80°C (122 to 176°F).
(c) Allow the engine to idle with the air conditioning and headlights off.
(d) Chock all 4 wheels.
(e) Set the parking brake and keep the brake pedal depressed firmly with your left foot.
HINT:
When the electric parking brake switch assembly is pulled 2 times (2 lock operations), the maximum amount of braking force is applied.
(f) Move the shift lever to D.
(g) Depress the accelerator pedal as much as possible with your right foot.
(h) Read the engine speed (stall speed) and release the accelerator pedal immediately.
Standard Value:
2400 +/- 150 rpm
Evaluation Test Result | Possible Cause |
---|---|
Stall speed is lower than standard value |
HINT: If the value is less than the specified value by 600 rpm or more, the torque converter assembly may be malfunctioning. |
Stall speed is higher than standard value |
|
SHIFT TIME LAG TEST
NOTICE:
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 shock can be felt. This is used for checking the condition of the clutch and brake.
(a) Connect the Techstream to the DLC3.
(b) Drive the vehicle until the transaxle fluid temperature has reached 50 to 80°C (122 to 176°F).
(c) Allow the engine to idle with the air conditioning off.
(d) Set the parking brake and keep the brake pedal depressed firmly.
HINT:
When the electric parking brake switch assembly is pulled 2 times (2 lock operations), the maximum amount of braking force is applied.
(e) 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 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 1.2 seconds
(f) 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 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 1.2 seconds
Evaluation Test Result | Possible Cause |
---|---|
D position time lag exceeds standard value |
|
R position time lag exceeds standard value |
|
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Start Function): Runnable Signal Malfunction (B2286,P0335)
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Steering Lock System: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Steering Lock System DTC No. Detection Item DTC Detection Condition Note Link B2781 Open / Short in Steering Lock ECU One of the following conditions is met (1-trip detection logic (Only output while a malfunction is present and the engine switch is o ...