DESCRIPTION
The transmission control switch detects when the shift lever is moved to M.
Moving the shift lever to "+" once selects the next higher gear, and moving the shift lever to "-" once selects the next lower gear.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
1. | READ VALUE USING TECHSTREAM (Shift SW Status (S Range)) |
(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 / Data List
(e) Read the Data List according to the display on the Techstream.
Powertrain > Transmission > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Shift SW Status (S Range) | Sport (M) mode select switch status | ON or OFF |
| - |
Tester Display |
---|
Shift SW Status (S Range) |
Result | Proceed to |
---|---|
Data List values are normal | A |
Data List values are not normal | B |
B | ![]() | GO TO STEP 6 |
|
2. | READ VALUE USING TECHSTREAM (SPORT SHIFT UP SW AND SPORT SHIFT DOWN SW) |
(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 / Engine / Data List
(e) Read the Data List according to the display on the Techstream.
Powertrain > Engine > Data List Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
---|---|---|---|---|
Sport Shift Up SW | Sport shift up switch status | ON or OFF |
| - |
Sport Shift Down SW | Sport shift down switch status | ON or OFF |
| - |
Tester Display |
---|
Sport Shift Up SW |
Sport Shift Down SW |
Result | Proceed to |
---|---|
Data List values are normal | A |
Data List values are not normal | B |
A | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
3. | INSPECT TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY) |
(a) Disconnect the J21 transmission control switch connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() | REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH) |
|
4. | CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND) |
(a) Disconnect the J21 transmission control switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J21-2 (E) - Body ground | Always | Below 1 Ω |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. | CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) |
(a) Connect the J21 transmission floor shift assembly (transmission control switch) connector.
(b) Disconnect the A37 ECM connector.
(c) Disconnect the spiral cable sub-assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
A37-38 (SFTU) - Body ground | Shift lever held in "+" (Up shift) | Below 1 Ω |
Shift lever not held in "+" (Up shift) | 10 kΩ or higher | |
A37-37 (SFTD) - Body ground | Shift lever held in "-" (Down shift) | Below 1 Ω |
Shift lever not held in "-" (Down shift) | 10 kΩ or higher |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) |
6. | INSPECT TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY) |
(a) Disconnect the J21 transmission control switch connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
4 (IG) - 5 (S) | Shift lever in M, "+" or "-" | Below 1 Ω |
Shift lever not in M, "+" or "-" | 10 kΩ or higher |
NG | ![]() | REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH) |
|
7. | CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH (POWER SOURCE)) |
(a) Disconnect the J21 transmission control switch connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
J21-4 (IG) - Body ground | Engine switch on (IG) | 11 to 14 V |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. | CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) |
(a) Disconnect the J21 transmission control switch connector.
(b) Disconnect the A37 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J21-5 (S) - A37-17 (S) | Always | Below 1 Ω |
J21-5 (S) or A37-17 (S) - Body ground and other terminals | Always | 10 kΩ or higher |
OK | ![]() | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Brake Master Cylinder: Removal
REMOVAL CAUTION / NOTICE / HINT NOTICE: Make sure to release vacuum from the brake booster assembly before removing the brake master cylinder sub-assembly from the brake booster assembly. PROCEDURE 1. DRAIN BRAKE FLUID NOTICE: If brake fluid leaks onto any painted surface, immediately wash it off. 2 ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Airbag System: Front Airbag Sensor Lost Communication (LH) (B1617,B1618)
DESCRIPTION The front airbag sensor LH circuit consists of the airbag sensor assembly and front airbag sensor LH. The front airbag sensor LH detects impacts to the vehicle and sends signals to the airbag sensor assembly to determine if the airbags, pretensioners and selectable force limiter should b ...