Toyota Camry (XV70): Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012687,U012987,U014087)
DESCRIPTION
When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
U010087 | Lost Communication with ECM/PCM "A" Missing Message |
3 seconds after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the ECM and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
|
U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message |
3 seconds after the ignition switch is turned to ON, while the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the airbag sensor assembly and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
|
U012687 | Lost Communication with Steering Angle Sensor Module Missing Message |
3 seconds after the ignition switch is turned to ON, a communication error between the steering sensor and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
|
U012987 | Lost Communication with Brake System Control Module Missing Message |
3 seconds after the ignition switch is turned to ON, a communication error between the skid control ECU (brake actuator assembly) and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
|
U014087 | Lost Communication with Body Control Module Missing Message |
3 seconds after the ignition switch is turned to ON, a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more. |
CAN communication system |
PROCEDURE
| 1. |
CHECK FOR DTCs |
(a) Clear the DTCs.
Chassis > Front Recognition Camera > 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.
Chassis > Front Recognition Camera > Trouble Codes|
Result | Proceed to |
|---|---|
|
CAN communication system DTC is not output |
A |
| CAN communication system DTC is output |
B |
| A |
.gif) | USE SIMULATION METHOD TO CHECK
|
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| B |
| GO TO CAN COMMUNICATION SYSTEM |
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Internal Control Module Software Incompatibility Not Programmed (U030051,U030057)
DESCRIPTION The forward recognition camera receives vehicle information from the ECM via the CAN communication line.
When the forward recognition camera is unable to determine the vehicle informatio
Software Incompatibility with Body Control Module Not Programmed (U032251)
DESCRIPTION The forward recognition camera receives vehicle information from the main body ECU (multiplex network body ECU) via CAN communication.
DTC U032251 is stored when the forward recognition
Software Incompatibility with Body Control Module Invalid/Incompatible Software Component (U032257)
DESCRIPTION The forward recognition camera receives vehicle information from the main body ECU (multiplex network body ECU) via CAN communication.
DTC U032257 is stored when the vehicle information
SEE MORE:
On-vehicle Inspection
ON-VEHICLE INSPECTION 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 WHEEL Click here
2. DISCONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY
Click here 3. SEPARATE REAR DISC BRAKE C
Right Rear Wheel Speed Sensor Circuit Intermittent (C05121F)
DESCRIPTION Refer to DTC C051212 Click here
DTC No. Detection Item
DTC Detection Condition Trouble Area
C05121F Right Rear Wheel Speed Sensor Circuit Intermittent
The speed sensor signal is excessively noisy.
The calculated change in wheel speed is more
