Toyota Corolla Cross: Lost Communication With ECM/PCM "A" Missing Message (U010087,...,U111787)
DESCRIPTION
These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly) and ECM, skid control ECU (brake actuator assembly), main body ECU (multiplex network body ECU), combination meter assembly, radio and display receiver assembly, hybrid vehicle control ECU or clearance warning ECU assembly, and data from the option connector (bus buffer ECU) cannot be received.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note |
|---|---|---|---|---|
| U010087 |
Lost Communication With ECM/PCM "A" Missing Message |
CAN communication malfunction between certification ECU (smart key ECU assembly) and ECM (1-trip detection logic*) |
ECM | DTC Output Confirmation Operation:
|
| U012987 |
Lost Communication with Brake System Control Module "A" Missing Message |
CAN communication error between certification ECU (smart key ECU assembly) and skid control ECU (brake actuator assembly) (1-trip detection logic*) |
Skid control ECU (brake actuator assembly) | DTC Output Confirmation Operation:
|
| U014087 |
Lost Communication with Body Control Module Missing Message |
CAN communication malfunction between certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) (1-trip detection logic*) |
Main body ECU (multiplex network body ECU) | DTC Output Confirmation Operation:
|
| U015587 |
Lost Communication with Instrument Panel Cluster (IPC) Control Module |
CAN communication malfunction between certification ECU (smart key ECU assembly) and combination meter assembly (1-trip detection logic*) |
Combination meter assembly | DTC Output Confirmation Operation:
|
| U016387 |
Lost Communication with Navigation Control Module Missing Message |
CAN communication malfunction between certification ECU (smart key ECU assembly) and radio and display receiver assembly (1-trip detection logic*) |
Radio and display receiver assembly | DTC Output Confirmation Operation:
|
| U029387 |
Lost Communication with Hybrid/EV Powertrain Control Module Missing Message |
CAN communication error between certification ECU (smart key ECU assembly) and hybrid vehicle control ECU (1-trip detection logic*) |
Hybrid vehicle control ECU | DTC Output Confirmation Operation:
|
| U111087 |
Lost Communication with Intuitive Parking Assist Module Missing Message |
CAN communication error between certification ECU (smart key ECU assembly) and clearance warning ECU assembly (1-trip detection logic*) |
Clearance warning ECU assembly | DTC Output Confirmation Operation:
|
| U111787 |
Lost Communication with Accessory Gateway Missing Message |
CAN communication malfunction between the certification ECU (smart key ECU assembly) and the option connector (bus buffer ECU) for approximately 10 seconds or more. |
Option connector (bus buffer ECU) | DTC Output Confirmation Operation:
|
- *: Only detected while a malfunction is present.
|
DTC Code | Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
|---|---|---|
|
U010087 | There is no effect on vehicle behavior. |
- |
| U012987 |
There is no effect on vehicle behavior. |
- |
| U014087 |
| - |
|
U015587 | The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. |
- |
| U016387 |
There is no effect on vehicle behavior. |
- |
| U029387 |
The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. |
- |
| U111087 |
There is no effect on vehicle behavior. |
- |
| U111787 |
The hybrid control system cannot be started using the wireless remote control function. |
- |
|
DTC No. | Data List and Active Test |
|---|---|
|
U010087 U012987 U014087 U015587 U016387 U029387 U111087 U111787 |
- |
CAUTION / NOTICE / HINT
NOTICE:
- When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Start Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
HINT:
When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
| 1. |
CHECK FOR DTC |
(a) Check for DTCs and note any DTCs that are output.
| NEXT | .gif) | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
READ NEXT:
Power Source Mode does not Change to ON (IG and ACC)
DESCRIPTION When the ignition switch cannot be turned to ACC or ON, interior verification may be abnormal or there may be a malfunction in the ACC relay or IG relay circuit. If interior verification c
Power Source Mode does not Change to ON (IG)
DESCRIPTION If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source
Power Source Mode does not Change to ON (ACC)
DESCRIPTION If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source
SEE MORE:
Left Rear Wheel Speed Sensor Circuit Short to Ground or Open (C050C14)
DESCRIPTION
Refer to DTC C050C12
Click here
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
DTC Output from
Note
C050C14
Left Rear Wheel Speed Sensor Circuit Short to Ground
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the following table, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
HINT: Using the GTS to read the Data List allows the values or states o
