Toyota Camry (XV70): Lost Communication With ECM/PCM "A" Missing Message (U010087,U010487,U012287)
DESCRIPTION
The ECM 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 |
DTC Output from |
|---|---|---|---|---|
|
U010087 | Lost Communication With ECM/PCM "A" Missing Message |
When the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake actuator assembly) and ECM is detected for approximately 1 second or more. |
CAN communication system |
Cruise Control |
|
U010487 | Lost Communication with Cruise Control Module Missing Message |
When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication malfunction between the forward recognition camera and ECM is detected for approximately 1 second or more. |
CAN communication system |
Cruise Control |
|
U012287 | Lost Communication with Vehicle Dynamics Control Module Missing Message |
When the ignition switch is ON and the dynamic radar cruise control system is operating, a communication malfunction between the skid control ECU (brake actuator assembly) and ECM is detected for approximately 3 seconds or more. |
CAN communication system |
Cruise Control |
PROCEDURE
| 1. |
CHECK FOR DTCs (Radar Cruise1) |
(a) Clear the DTCs.
Powertrain > Cruise Control > 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 > Cruise Control > 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
|
.gif)
| B |
| GO TO CAN COMMUNICATION SYSTEM |
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If any malfunction is detected in a CAN communication circuit, one or more CAN communication s
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DESCRIPTION
If the forward recognition camera cannot verify the vehicle information sent from the ECM, the forward recognition camera stores DTC U030051.
If the vehicle information stored in
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Installation
INSTALLATION PROCEDURE 1. INSTALL AIR FUEL RATIO SENSOR (for Bank 1)
HINT: Perform "Inspection After Repair" after replacing the air fuel ratio sensor.
Click here
(a) Using SST, install the air fuel ratio sensor to the exhaust manifold assembly RH (TWC: Front Catalyst).
SST: 09224
RSA (Road Sign Assist)
Summary of function
The RSA system recognizes specific
road signs using the front
camera and/or navigation system
(when speed limit information is
available) to provide information
to the driver via the display.
If the system judges that the vehicle is being driven over the speed
limit, pe
