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 FRONT BUMPER ASSEMBLY (a) w/ Fog Light: (1) Connect the 2 connectors. (b) Engage the 3 claws and guide to install the front bumper assembly. (c) Remove the protective tape. (d) Install the 6 clips. (e) Engage the clamp. (f) Connect the connector. (g) Insta ...

Voice Guidance does not Function
PROCEDURE 1. CHECK VOICE GUIDANCE SETTING (a) Check that the voice guidance settings are not off. OK: Voice guidance settings are not off. NG CHANGE VOICE GUIDANCE SETTINGS TO ON OK ...

Inspection
INSPECTION PROCEDURE 1. INSPECT CLUTCH DISC ASSEMBLY NOTICE: When replacing the clutch disc assembly, make sure to perform an inspection of the flywheel sub-assembly and clutch cover assembly. (a) Using a vernier caliper, measure the rivet depth. Minimum rivet depth: 0.3 mm ...

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