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 CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the ...

Monitor Drive Pattern
MONITOR DRIVE PATTERN 1. TEST MONITOR DRIVE PATTERN FOR ECT CAUTION: Perform this drive pattern on a level surface and strictly observe the posted speed limits and traffic laws while driving. HINT: Performing this drive pattern is one method to simulate the ECM (ECT) malfunction detection c ...

TC and CG Terminal Circuit
DESCRIPTION Tire pressure warning system DTCs can be checked by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by blinking the tire pressure warning light. WIRING DIAGRAM PROCEDURE 1. CHECK CAN COMMUNICATION SYSTEM (a) Check for ...

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