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
|
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| 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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Reassembly
REASSEMBLY PROCEDURE 1. INSTALL OIL PUMP ROTOR SET
(a) Coat the drive rotor and driven rotor with engine oil and place them into the timing chain cover assembly with the rotor marks facing up. Check that the rotors rotate smoothly.
*a Rotor Mark
2. I
Components
COMPONENTS ILLUSTRATION
*A for RH Side
*B for LH Side
*1 NO. 1 FLOOR UNDER COVER
*2 NO. 2 FLOOR UNDER COVER
N*m (kgf*cm, ft.*lbf): Specified torque
- - ILLUSTRATION
*1 PARKING BRAKE SHOE ADJUSTING HOLE PLUG
*2 REAR A
