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Automatic Transmission (U151E): Wiring Lexus RX II facelift

Automatic Trans 2 illustrations ~360 words

WIRING DIAGRAM

See WIRING DIAGRAM .

Scheme 578

Scheme 578: INSPECTION PROCEDURE
Scheme 578: INSPECTION PROCEDURE

Scheme 579

Scheme 579
Scheme 579
  1. READ VALUE OF DATA LIST HINT: According to the DATA LIST displayed by the OBD II scan tool or intelligent tester, you can read the value of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one method to shorten labor time. Warm up the engine. Turn the ignition switch off. Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3. Turn the ignition switch to the on position. Turn on the tester.. Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST". According to the display on the tester, read the "DATA LIST". DATA LIST DATA LIST Item Measurement Item/Range (display) Normal Condition STOP LIGHT SW Stop light SW Status/ON or OFF Brake pedal is depressed: ON Brake pedal is released: OFF NOTE: In the table below, the value listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether apart is faulty or not. NG: Go to step 2 OK: GO TO STEP 3
  2. INSPECT STOP LIGHT SWITCH ASSEMBLY Remove the stop light switch assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION AND SPECIFIED CONDITION Switch position Tester Connection Specified Condition Switch pin free 1 - 2 Below 1 ohms Switch pin pushed in 10 kohms or higher Switch pin free 3 - 4 10 kohms or higher Switch pin pushed in Below 1 ohms NG: REPLACE STOP LIGHT SWITCH ASSEMBLY OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - ECM) Install the stop light switch assembly. Measure the voltage according to the value(s) in the table below when the brake pedal is depressed and released. Voltage TESTER CONNECTION AND SPECIFIED CONDITION Condition Tester Connection Specified Condition Brake pedal is depressed E6 - 19 (STP) - Body ground 10 to 14 V Brake pedal is released Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE ECM

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