Lexus ES: Diagnostic Trouble Code Chart
Lexus ES (XZ10) Service Manual / Vehicle Interior / Wiper / Washer / Wiper And Washer System (for Hv Model) / Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Wiper and Washer System| DTC No. | Detection Item | DTC Output from | Link |
|---|---|---|---|
| B1245 | Lost Communication with Wiper ECU LIN | Main Body | |
| B1279 | Lost Communication with Humidity/Rain Sensor LIN | Main Body | |
| B1370 | ECU Malfunction | Windshield wiper motor assembly | |
| B1372 | Wiper Switch Signal Mismatch between LIN and Line | Wiper | |
| B1373 | Lost Communication with Wiper System LIN BUS | Main Body | |
| B1400 | Rain Sensor Malfunction | Rain sensor | |
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Lost Communication with Wiper ECU LIN (B1245)
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
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
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
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Basic Inspection
CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic engine check shown in the following procedure, the location of the problem ca
Open Circuit in ABS Motor Relay Circuit (C146C,C146D)
DESCRIPTION The ABS motor relay is built into the brake booster with master cylinder assembly. During ABS, TRAC, VSC, brake hold, secondary collision brake or brake assist operation, the skid control ECU (brake booster with master cylinder assembly) turns on the ABS motor relay to run the pump motor
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