Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: ECU Malfunction (B1370)
DESCRIPTION
This DTC is stored when the front wiper motor and link assembly (wiper ECU) detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | DTC Output from |
|---|---|---|---|---|---|
| B1370 | ECU Malfunction | When the battery voltage is 9.5 V or more, a malfunction is detected for 10 seconds or more during the wiper ECU self-check. | Front wiper motor and link assembly | ○ | Front wiper motor and link assembly |
PROCEDURE
| 1. | CLEAR DTC |
(a) Clear the DTCs.
Click here .gif)
|
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| 2. | CHECK FOR DTC |
(a) Turn the engine switch on (IG).
(b) Check for DTCs.
Click here
| Result | Proceed to |
|---|---|
| DTC B1370 is not output. | A |
| DTC B1370 is output. | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE FRONT WIPER MOTOR AND LINK ASSEMBLY |
Lost Communication with Humidity/Rain Sensor LIN (B1279)
DESCRIPTION The main body ECU (multiplex network body ECU) and rain sensor communicate via LIN communication. The main body ECU (multiplex network body ECU) stores this DTC if communication becomes ab ...
Wiper Switch Signal Mismatch between LIN and Line (B1372)
DESCRIPTION Under normal operation, the front wiper motor and link assembly (wiper ECU) receives operation signals from the windshield wiper switch assembly via LIN communication. The windshield front ...
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Rear Combination Light Assembly (w/ Rear No. 2 Seat): Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. REMOVE REAR NO. 2 SEAT ASSEMBLY Click here 2. REMOVE REAR DOOR SCUFF PLATE Click here 3. REMOVE REAR DOOR INSIDE SCUFF PLATE Click here 4. ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Charging System: Terminals Of Ecm
TERMINALS OF ECM CHECK ECM HINT: The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of t ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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