Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Invalid Data Received from Deceleration Sensor (C1442,C1443)

DESCRIPTION

The airbag sensor assembly has a built-in yaw rate and acceleration sensor.

The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1442

Invalid Data Received from Acceleration Sensor

When voltage at terminal +BS is 9.5 to 17.4 V, sensor invalid information received from acceleration sensor is ON continuously for 10 seconds or more.

Acceleration sensor (Airbag sensor assembly)

C1443

Invalid Data Received from Yaw Rate Sensor

When voltage at terminal +BS is 9.5 to 17.4 V, sensor invalid information received from yaw rate sensor is ON continuously for 10 seconds or more.

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 PROCEDURE PROCEDURE ).

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs (See page ). (b) Turn the ignition switch off. ).

(b) Turn the ignition switch off.

(c) Start the engine and idle it for 60 seconds, and then stop the engine.

(d) Check if the same DTC is recorded (See page Result Result ).

Result

Result

Proceed to

DTCs C1442 and/or C1443 are output

A

DTCs C1442 and C1443 are not output

B

A

REPLACE AIRBAG SENSOR ASSEMBLY

B

USE SIMULATION METHOD TO CHECK

Open in ABS Solenoid Relay Circuit (C146E,C146F)
DESCRIPTION The ABS solenoid relay supplies power to the ABS solenoid and TRAC solenoid. The solenoid relay is turned on 1.5 seconds after the ignition switch is turned ON, and is turned off if an ...

Acceleration Sensor Stuck Malfunction (C1232,C1243,C1245)
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 ...

Other materials:

Removal
REMOVAL PROCEDURE 1. REMOVE NO. 2 ENGINE UNDER COVER SUB-ASSEMBLY (w/ Off Road Package) 2. REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY 3. DRAIN ENGINE COOLANT 4. REMOVE RADIATOR GRILLE (See page ) 5. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH (See page ) 6. REMOVE NO. 2 OIL COOLER INLET ...

Precaution
PRECAUTION 1. IGNITION SWITCH EXPRESSIONS (a) The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ignition Switch (Position) Engine ...

Open in ABS Solenoid Relay Circuit (C146E,C146F)
DESCRIPTION The ABS solenoid relay supplies power to the ABS solenoid and TRAC solenoid. The solenoid relay is turned on 1.5 seconds after the ignition switch is turned ON, and is turned off if an open or short in the solenoid is detected by the self diagnosis performed when the engine starts ...

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