Toyota Tacoma (2015-2018) Service Manual: 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 |
MIL |
|---|---|---|---|---|
|
U010087 |
Lost Communication With ECM/PCM "A" Missing Message |
While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the ECM continuously receives a communication cut-off signal from the skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 for approximately 1 second or more. |
|
Does not come on |
|
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 error between the millimeter wave radar sensor assembly and ECM is detected for 1 second or more. |
|
Does not come on |
|
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 error between the skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 and the ECM is detected for approximately 2.6 seconds or more. |
|
Does not come on |
- *1: for Hydraulic Brake Booster
- *2: for Vacuum Brake Booster
PROCEDURE
|
1. |
CHECK FOR DTCs |
(a) Clear the DTCs.
Click here .gif)
(b) Perform the following procedure.
HINT:
If the following procedure is not performed, the previously output DTC cannot be detected.
- Turn the ignition switch to ON.
- Turn the dynamic radar cruise control system on using the cruise control main switch.
- Drive the vehicle at 36 km/h (22 mph) or more for 5 seconds or more.
(c) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC U010087, U010487 and U012287 are not output |
A |
|
DTC U010087, U010487 or U012287 is output |
B |
| A | .gif) |
USE SIMULATION METHOD TO CHECK |
| B | |
GO TO CAN COMMUNICATION SYSTEM |
Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129)
DESCRIPTION
The millimeter wave radar sensor assembly and ECM communicate with each sensor
and ECU via CAN communication.
If any malfunction is detected in a CAN communication circuit, one or more ...
Brake System (P157800)
DESCRIPTION
This DTC is stored when a malfunction is detected in the vehicle stability control
system.
DTC No.
Detection Item
DTC Detection Condition
Tr ...
Other materials:
Tire inflation pressure
■ Tire inflation pressure
The recommended cold tire inflation pressure and tire size is displayed on the
tire and loading information label.
Regular Cab and Double Cab models
Access Cab models
■ Inspection and adjustment procedure
1. Tire valve
2. Tire pressure gauge
Re ...
Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
Always use a new grommet and valve core when installing the tire pressure
warning valve and transmitter.
Check that the washer and nut are not damaged, and replace them if necessary.
If installing a new tire pressure warning valv ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The vehicle stability control system troubleshooting procedures are
based on the premise that the CAN communication system is functioning normally.
Check the CAN communication system first before troubleshooting the vehicle
stability control system ...
