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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DESCRIPTION
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Dtc Check / Clear
DTC CHECK / CLEAR NOTICE: When the diagnosis system is changed from normal mode to check mode or vice versa, all DTCs and freeze frame data recorded in normal mode are cleared. Before changing modes, always check and make a note of DTCs and freeze frame data.
HINT:
DTCs which are stored in the
