Toyota Tacoma 2015-2018 Service Manual: Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U0142)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor.
HINT:
If CAN communication system DTCs are stored, they may also be stored for other systems.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
U0100 |
Lost communication with ECM |
CAN communication system |
|
U0126 |
Lost communication with steering sensor |
|
|
U0129 |
Lost communication with skid control ECU (brake actuator assembly) |
|
|
U0142 |
Lost communication with main body ECU (driver side junction block assembly) |
CAUTION / NOTICE / HINT
NOTICE:
When checking for DTCs, make sure that the blind spot monitor main switch assembly (warning canceling switch assembly) is on.
PROCEDURE
|
1. |
CHECK DTC |
(a) Clear the DTCs (See page .gif)
).
(b) Check for DTCs (See page ).
|
Result |
Proceed to |
|---|---|
|
DTCs are output |
A |
|
No DTCs are output |
B |
HINT:
- If CAN communication system DTCs are stored, they may also be stored for other systems.
- If the CAN communication system has been inspected and repaired, the DTCs will not be output when rechecking for DTCs.
- If these DTCs are output frequently, duplicate the conditions that cause
the problem symptoms and perform the inspection again, even though the DTC
was not output when rechecking for DTCs (See page
).
| A | .gif) |
GO TO CAN COMMUNICATION SYSTEM |
| B | |
USE SIMULATION METHOD TO CHECK |
Lost Communication with Blind Spot Monitor Slave Module (U0232)
DESCRIPTION
This DTC is stored when the blind spot monitor sensor LH judges that there is
a communication problem with the blind spot monitor sensor RH.
DTC Code
DTC Detectio ...
Short to +B in Buzzer (C1ABD,C1ABE)
DESCRIPTION
DTC C1ABD is stored when the blind spot monitor sensor RH detects a
+B short in rear cross traffic alert buzzer (blind spot monitor buzzer)
circuit.
DTC C1ABE is stored ...
Other materials:
Panel Switches do not Function
PROCEDURE
1.
CHECK PANEL SWITCH
(a) Check for foreign matter around the switches that might prevent operation.
OK:
No foreign matter is found.
NG
REMOVE ANY FOREIGN MATTER FOUND
OK
...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE HOOD BULGE ASSEMBLY (w/ Hood Bulge)
(a) Remove the 4 nuts.
(b) Disengage the clip from back side of the hood panel to remove the hood bulge
assembly together with the air intake guide.
2. REMOVE NO. 2 HOOD BU ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...