Lexus ES: Front Wheels Speed Sensor Signal Malfunction (C1783)
Lexus ES (XZ10) Service Manual / Suspension / Suspension Control / Adaptive Variable Suspension System / Front Wheels Speed Sensor Signal Malfunction (C1783)
DESCRIPTION
The speed sensors monitor the speed of the wheels and send an appropriate speed signal to the absorber control ECU through the skid control ECU (brake actuator assembly).
If a malfunction occurs in either a front speed sensor or rear speed sensor, DTC C1783 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory |
|---|---|---|---|---|---|
| C1783 | Front Wheels Speed Sensor Signal Malfunction | A speed sensor malfunction signal from the skid control ECU (brake actuator assembly) is detected for 1 second or more. | Electronically controlled brake system | Does not come on | Yes |
PROCEDURE
| 1. | GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM |
(a) Go to electronically controlled brake system.
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| NEXT | .gif) | END |
READ NEXT:
Steering Sensor Signal Malfunction (C1784)
DESCRIPTION Steering sensor signals are sent to the absorber control ECU via CAN communication. If a communication error is detected, DTC C1784 is stored. DTC No. Detection Item DTC Detection C
Master Cylinder Pressure Circuit (C1786)
DESCRIPTION The absorber control ECU stores this DTC when a malfunction signal from the master cylinder pressure sensor built into the brake actuator assembly is received via CAN communication. DTC
(Horizontality) G Sensor Malfunction (C1787)
DESCRIPTION The absorber control ECU receives a signal from the yaw rate and acceleration sensor (airbag ECU assembly) via CAN communication. DTC No. Detection Item DTC Detection Condition Tr
SEE MORE:
Removal
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration)
that must be performed after parts are removed and installed, or replaced during
front disc brake pad removal/installation are shown below.
Necessary Procedures After Parts Remo
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use these procedures to troubleshoot the heated steering wheel system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. INSPECT BATTERY VOLTAGE (a) Measure the battery voltage with the engine switch off.
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