INITIALIZATION
RESET TRANSAXLE COMPENSATION CODE
NOTICE:
HINT:
The ECM (ECT) memorizes the vehicle conditions when controlling the automatic transaxle assembly and engine assembly.
Therefore, if the automatic transaxle assembly or ECM has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information. The reset procedure is as follows:
(a) Make sure the shift lever is in P or N.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Transmission / Utility / A/T Code Reset.
Powertrain > Transmission > Utility Tester Display |
---|
A/T Code Reset |
(f) Press "Next" again to proceed.
NOTICE:
After the transaxle compensation code is initialized, perform Reset Memory and Perform Road Test to Allow ECM to Learn.
(g) Press "Exit".
RESET MEMORY
NOTICE:
HINT:
The ECM (ECT) memorizes the vehicle conditions when controlling the automatic transaxle assembly and engine assembly.
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Transmission / Utility / Reset Memory.
Powertrain > Transmission > Utility Tester Display |
---|
Reset Memory |
(e) Press "Next".
NOTICE:
After performing Reset Memory, be sure to perform Perform Road Test to Allow ECM to Learn.
PERFORM ROAD TEST TO ALLOW ECM TO LEARN
CAUTION:
(a) The Road Test procedure is as follows:
(1) Warm up the engine.
(2) According to the replaced parts, perform the appropriate road test shown below.
Replaced Parts | Road Test |
---|---|
| Perform pattern 1, 2 and 3 Pattern 1:*1
Pattern 2:
Pattern 3:*2
|
| Perform pattern 1 and 3 Pattern 1:*1
Pattern 3:*2
|
HINT:
Move the shift lever to M and select 5th gear.
Release the accelerator pedal and allow the vehicle to decelerate gradually.
When the vehicle decelerates to approximately 50 km/h (31 mph), downshift to 4th gear.
When the vehicle decelerates to approximately 40 km/h (25 mph), downshift to 3rd gear.
When the vehicle decelerates to approximately 30 km/h (19 mph), downshift to 2nd gear.
NOTICE:
(3) Repeat the road test until the shift shock and engine speed overrun (engine speed flare when shifting) reach an acceptable level.
NOTICE:
When repeating the acceleration/deceleration cycle of a road test pattern, bring the vehicle to a complete stop before accelerating again.
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Do-it-yourself
maintenance: Do-it-yourself service
precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure
as given in these sections.
Items
Parts and tools
12-volt battery condition
Grease
Conventional wrench (for terminal clamp bolts)
Brake fluid level
...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Back Door System (w/ Outside Door Control Switch): PBD Touch Sensor RH Circuit (B222B)
DESCRIPTION This DTC is stored when the multiplex network door ECU detects a malfunction of the power back door sensor assembly RH touch sensor. DTC No. Detection Item DTC Detection Condition Trouble Area B222B PBD Touch Sensor RH Circuit Multiplex network door ECU detects power bac ...