Lexus ES: Lost Communication with Cruise Control Module Missing Message (U010487,U012287,U029387)
DESCRIPTION
The hybrid vehicle control ECU communicates with each sensor and ECU via CAN communication.
If any malfunction is detected in a CAN communication circuit, one or more CAN communication system DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from |
|---|---|---|---|---|---|
| U010487 | Lost Communication with Cruise Control Module Missing Message | When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication malfunction between the millimeter wave radar sensor assembly and hybrid vehicle control ECU is detected for approximately 1 second or more. |
| Does not come on | Hybrid vehicle control ECU |
| U012287 | Lost Communication with Vehicle Dynamics Control Module Missing Message | When the power switch is on (IG) and the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU is detected for approximately 2.6 seconds or more. |
| Does not come on | Hybrid vehicle control ECU |
| U029387 | Lost Communication with Hybrid Powertrain Control Module Missing Message | When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake booster with master cylinder assembly) and hybrid vehicle control ECU is detected for approximately 1 second or more. |
| Does not come on | Hybrid vehicle control ECU |
PROCEDURE
| 1. | CHECK FOR DTCs |
(a) Clear the DTCs.
Powertrain > Radar Cruise1 > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Powertrain > Radar Cruise1 > Trouble Codes| Result | Proceed to |
|---|---|
| DTC U010487, U012287 and U029387 are not output | A |
| DTC U010487, U012287 or U029387 is output | B |
| A | .gif) | USE SIMULATION METHOD TO CHECK |
| B | | GO TO CAN COMMUNICATION SYSTEM |
READ NEXT:
Lost Communication with Multi-axis Acceleration Sensor Module Missing Message (U012587,U012687,U012987,U015587,U029387,U110687)
DESCRIPTION The forward recognition camera communicates with each sensor and ECU via CAN communication. If any malfunction is detected in a CAN communication circuit, one or more CAN communication sys
Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message (U023587)
DESCRIPTION The forward recognition camera communicates with the millimeter wave radar sensor assembly via CAN communication. If a communication malfunction between the forward recognition camera and
Internal Control Module Software Incompatibility Not Programmed (U030051)
DESCRIPTION If the forward recognition camera cannot verify the vehicle information sent from the hybrid vehicle control ECU, the forward recognition camera stores DTC U030051. DTC No. Detection
SEE MORE:
Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via this circuit. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) (a) Disconnect the G5 ra
On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT GARAGE DOOR OPENER (a) Press each garage door opener ("HomeLink") switch and check that the ("HomeLink") indicator light turns on. If one or more of the garage door opener ("HomeLink") switches does not turn on the ("HomeLink") indicator light, check the
