Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Acceleration Sensor Malfunction (C1420)

DESCRIPTION

Refer to DTCs C1419 and C1435 (See page ).

DTC Code

DTC Detection Condition

Trouble Area

C1420

After the difference between GL1 and GL2 becomes 0.6 G or more with the vehicle stationary, the difference remains 0.4 G or more for 60 seconds or more.

  • Sensor installation
  • Yaw rate and acceleration sensor (airbag sensor assembly)

WIRING DIAGRAM

Refer to DTCs C1232, C1243 and C1245 (See page CAUTION / NOTICE / HINT ).

CAUTION / NOTICE / HINT

NOTICE:

When replacing the yaw rate and acceleration sensor (airbag sensor assembly), perform calibration (See page ). PROCEDURE ).

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check for DTCs (See page ). Result ).

Result

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

A

2.

CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION

(a) Check that the yaw rate and acceleration sensor (airbag sensor assembly) is installed properly (See page ). OK: ).

OK:

The sensor is tightened to the specified torque.

The sensor is not installed at an angle.

OK

REPLACE AIRBAG SENSOR ASSEMBLY

NG

INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY

Acceleration Sensor Internal Circuit (C1419,C1435)
DESCRIPTION The skid control ECU (master cylinder solenoid) receives signals from the yaw rate and acceleration (airbag sensor assembly) via the CAN communication system. The airbag sensor assembl ...

Open in Stop Light Switch Circuit (C1425)
DESCRIPTION The skid control ECU (master cylinder solenoid) inputs stop light switch signals and the brake operation condition. The skid control ECU (master cylinder solenoid) has an open detectio ...

Other materials:

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR BUMPER ASSEMBLY (a) Using an engine lifter or equivalent, engage the 2 pins to install the rear bumper assembly as shown in the illustration. Text in Illustration *a Pin - - NOTICE: Using pl ...

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the causes of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected area ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE INTAKE VALVE (a) Using SST, compress the inner compression spring and remove the valve spring retainer locks. SST: 09202-70020 SST: 09202-00021 09202-01010 09202-01020 (b) Remove the valve s ...

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