Toyota Corolla Cross: Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U110387)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system connected to the clearance warning ECU assembly.
HINT:
If CAN communication system DTCs are stored, they may also be stored in other systems.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
U010087 |
Lost Communication with ECM/PCM "A" Missing Message |
The clearance warning ECU assembly is unable to receive data from the ECM for 5.12 seconds or more |
CAN communication system |
|
U012687 |
Lost Communication with Steering Angle Sensor Module Missing Message |
The clearance warning ECU assembly is unable to receive data from the steering sensor for 5.04 seconds or more |
CAN communication system |
|
U012987 |
Lost Communication with Brake System Control Module Missing Message |
The clearance warning ECU assembly is unable to receive data from the skid control ECU for 5 seconds or more |
CAN communication system |
|
U014087 |
Lost Communication with Body Control Module Missing Message |
The clearance warning ECU assembly is unable to receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more |
CAN communication system |
|
U015587 |
Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message |
The clearance warning ECU assembly is unable to receive data from the combination meter assembly for 5 seconds or more |
CAN communication system |
|
U016487 |
Lost Communication with HVAC Control Module Missing Message |
The clearance warning ECU assembly is unable to receive data from the air conditioning amplifier assembly for 5 seconds or more |
CAN communication system |
|
U023387 |
Lost Communication with Side Obstacle Detection Control Module "B" Missing Message |
The clearance warning ECU assembly is unable to receive data from the blind spot monitor sensor LH (B) for 5 seconds or more |
CAN communication system |
|
U029387 |
Lost Communication with Hybrid/EV Powertrain Control Module Missing Message |
Lost communication with hybrid vehicle control ECU |
CAN communication system |
|
U110387 |
Lost Communication with Stop and Start Control Module Missing Message |
No communication between the engine stop and start ECU and the clearance warning ECU assembly for 5 second. |
CAN communication system |
PROCEDURE
|
1. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Clearance Warning > Clear DTCs
|
.gif)
|
2. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Clearance Warning > Trouble Codes|
Result |
Proceed to |
|---|---|
|
U010087, U012687, U012987, U014087, U015587, U016487, U023387, U029387 or U110387 is output |
A |
|
DTCs are not output |
B |
|
None of the above conditions are met |
C |
| A | .gif)
|
GO TO CAN COMMUNICATION SYSTEM
|
.gif)
| B |
|
USE SIMULATION METHOD TO CHECK |
| C |
|
GO TO DTC CHART |
READ NEXT:
Clearance Warning ECU Power Source Circuit
DESCRIPTION
This circuit provides power to operate the clearance warning
ECU assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system bef
Sensor Frozen Indication (Dirty or Frozen)
DESCRIPTION
When the ultrasonic sensor is dirty or frozen, "Parking Assist
Unavailable Please Clean Parking Assist Sensor" is displayed on the multi-information
display in the combinati
SEE MORE:
Operation Check
OPERATION CHECK CHECK THERMOSTAT IN FRONT SEAT CUSHION HEATER ASSEMBLY LH
(a) Remove the front seat cushion heater assembly LH.
for Manual Seat:
Click here
for Power Seat:
Click here
(b) Remove the front seatback heater assembly LH.
for Manual Seat:
Click here
Control Module Processor Watchdog/Safety MCU Failure (P060647)
MONITOR DESCRIPTION The ECM continuously monitors its main CPU and monitor IC. This self-check ensures that the ECM is functioning properly. If outputs from main CPU and monitor IC are different and deviate from the standard, the ECM will illuminate the MIL and store this DTC.
DTC No. Detect
