Toyota 4Runner: Lost Communication with ECM (U0100,U0142,U0155)
DESCRIPTION
The air conditioning amplifier communicates with the ECM, main body ECU (multiplex network body ECU) and combination meter through the CAN communication system.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
U0100 |
Lost communication with the ECM. |
|
|
U0142 |
Lost communication with the main body ECU. |
|
|
U0155 |
Lost communication with the combination meter. |
|
PROCEDURE
|
1. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Result|
Result |
Proceed to |
|---|---|
|
CAN DTC is not output |
A |
|
CAN DTC is output |
B |
| A | .gif) |
USE SIMULATION METHOD TO CHECK |
| B | |
GO TO CAN COMMUNICATION SYSTEM |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is output during the DTC check, inspect the trouble
areas listed for that code. For details of the code, refer to the "See page ...
Driver Side Solar Sensor Short Circuit (B14A2)
DESCRIPTION
The automatic light control sensor (solar sensor), which is installed on the
upper side of the instrument panel, detects sunlight and controls the air conditioning
in auto mode. The ...
Other materials about Toyota 4Runner:
Tire Pressure Warning Receiver(w/ Antenna)
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE ROOF HEADLINING ASSEMBLY
(a) Remove the roof headlining assembly (See page
).
2. REMOVE TIRE PRESSURE WARNING ANTENNA AND RECEIVER
(a) Disconnect the connector.
...
Lost Communication with Front Airbag Sensor RH (B1612/83,B1613/83)
DESCRIPTION
The front airbag sensor RH circuit consists of the center airbag sensor and front
airbag sensor RH.
The front airbag sensor RH detects impacts to the vehicle and sends signals to
the center airbag sensor to determine if the airbag should be d ...
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