Lexus ES: ECU Malfunction (B1370)
DESCRIPTION
This DTC is stored when the windshield wiper motor assembly detects an internal malfunction.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | DTC Output from |
|---|---|---|---|---|---|
| B1370 | ECU Malfunction |
| Windshield wiper motor assembly | ○ | Windshield wiper motor assembly |
PROCEDURE
| 1. | CLEAR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Wiper / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > Wiper > Clear DTCs
|
.gif)
| 2. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Wait 10 seconds or more.
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / Wiper / Trouble Codes.
(f) Check for DTCs.
Body Electrical > Wiper > Trouble Codes| Result | Proceed to |
|---|---|
| DTC B1370 is not output | A |
| DTC B1370 is output | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY |
READ NEXT:
Wiper Switch Signal Mismatch between LIN and Line (B1372)
DESCRIPTION Under normal operation, the windshield wiper motor assembly receives operation signals from the windshield wiper switch assembly via LIN communication. The windshield wiper motor assembly
Lost Communication with Wiper System LIN BUS (B1373)
DESCRIPTION The main body ECU (multiplex network body ECU) and windshield wiper motor assembly communicate via LIN communication. The main body ECU (multiplex network body ECU) stores this DTC if comm
Rain Sensor Malfunction (B1400)
DESCRIPTION This DTC is stored when the rain sensor detects an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area Memory DTC Output from B1400 Rain Se
SEE MORE:
Side Camera LH Response Malfunction (C2A6B)
DESCRIPTION During self diagnosis of the parking assist ECU, the parking assist ECU sends display mode ID signals to the side television camera assembly LH. This DTC is stored when the output of the side television camera assembly LH does not match the expected output. DTC No. Detection Item
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT RAIN SENSOR (a) Disconnect the rain sensor connector. *a Front view of wire harness connector (to Rain Sensor) (b) Measure the voltage according to the value(s) in the table below. Standard Voltage: Tester Connection Conditi
