Toyota Tacoma (2015-2018) Service Manual: Acceleration Sensor Internal Circuit (C1419,C1435)
DESCRIPTION
The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system.
The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.
If there is trouble in the bus lines between the acceleration sensor (airbag sensor assembly) and the CAN communication system, DTCs U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.
These DTCs are also output when calibration has not been completed.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
C1419 |
Acceleration Sensor Internal Circuit |
A data malfunction signal is received from the acceleration sensor. |
Acceleration sensor (Airbag sensor assembly) |
|
C1435 |
Yaw Rate Sensor Internal Circuit |
A data malfunction signal is received from the yaw rate sensor. |
Yaw rate sensor (Airbag sensor assembly) |
CAUTION / NOTICE / HINT
NOTICE:
When replacing the yaw rate and acceleration sensor (airbag sensor assembly),
perform zero point calibration and store system information (See page
.gif)
).
HINT:
When U0124 and/or U0126 is output together with C1419 and/or C1435, inspect and
repair the trouble areas indicated by U0124 and/or U0126 first (See page
).
PROCEDURE
|
1. |
REPLACE AIRBAG SENSOR ASSEMBLY |
(a) Replace the airbag sensor assembly (See page
).
HINT:
If troubleshooting has been carried out according to the Problem Symptoms Table,
refer back to the table and proceed to the next step (See page
).
| NEXT | .gif) |
END |
High Power Supply Voltage Malfunction (C1417)
DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU
(brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS
operation.
This DTC ...
Open or Short in Master Cylinder Pressure Sensor (C1421,C1423,C1424,C142A,C1449)
DESCRIPTION
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C1421
Open or Short in Master Cylinder Pressure Sensor
...
Other materials:
Installation
INSTALLATION
PROCEDURE
1. INSTALL REAR ENGINE OIL SEAL
(a) Apply MP grease to the lip of a new rear engine oil seal.
NOTICE:
Keep the lip free of foreign matter.
(b) Using SST, tap in a new rear engine oil seal until its surface is
flush with the rear engine oil seal retainer ed ...
Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2) (P0778)
DESCRIPTION
Changing from 1st to 6th is performed by the ECM turning shift solenoid valves
SL1, SL2, SL3 and SL4 on and off. If an open or short circuit occurs in any of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves
to allow the vehicle to be operated ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE CONNECTOR COVER
(a) Disengage the 2 clips to remove the connector cover.
2. REMOVE REAR BUMPER PAD SUB-ASSEMBLY
(a) Separate the 2 license plate light assemblies as shown in the illustration.
...
