Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: SM Solenoid Circuit (C1225-C1228,C1468,C1469,C146A,C146B)

DESCRIPTION

The solenoid goes on when signals are received from the skid control ECU (master cylinder solenoid) and controls the pressure action on the wheel cylinders thus controlling the braking force.

DTC No.

DTC Detecting Conditions

Trouble Areas

C1225

Open or short in SMCR circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SMCR circuit

C1226

Open or short in SREA circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SREA circuit

C1227

Open or short in SREC circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SREC circuit

C1228

Open or short in STR circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • STR circuit

C1468

Open or short in SFRH or SFRR circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SFRH or SFRR circuit

C1469

Open or short in SFLH or SFLR circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SFLH or SFLR circuit

C146A

Open or short in SRRH or SRRR circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SRRH or SRRR circuit

C146B

Open or short in SRLH or SRLR circuit continues for 0.05 seconds or more.

  • Master cylinder solenoid
  • SRLH or SRLR circuit

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

RECONFIRM DTC

HINT:

This DTCs are set when a problem is identified in the master cylinder solenoid.

The solenoid circuit is in the master cylinder solenoid.

Therefore, solenoid circuit inspection and solenoid unit inspection cannot be performed. Be sure to check if the DTCs are output before replacing the master cylinder solenoid.

(a) Clear the DTC (See page ). (b) Check if the same DTCs are detected. ).

(b) Check if the same DTCs are detected.

Result

Proceed to

DTC output

A

DTC not output

B

A

REPLACE MASTER CYLINDER SOLENOID

B

END

Zero Point Calibration of Yaw Rate Sensor Undone (C1210,C1336)
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 ...

Acceleration Sensor Stuck Malfunction (C1232,C1243,C1245,C1279)
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 ...

Other materials:

Removal
REMOVAL PROCEDURE 1. REMOVE REAR SEAT ASSEMBLY LH (for Double Cab) Click here 2. REMOVE REAR SEAT ASSEMBLY RH (for Double Cab) Click here 3. REMOVE REAR DOOR SCUFF PLATE LH (for Double Cab) Click here 4. REMOVE REAR DOOR SCUFF PLATE RH (for Double Cab) HINT: Use the same procedure ...

Brake Switch "B" Circuit Short to Battery (P070312)
DESCRIPTION The purpose of this circuit is to prevent the engine from stalling while driving in lock-up when the brakes are suddenly applied. When the brake pedal is depressed, this switch sends a signal to the ECM. Then the ECM cancels the operation of the lock-up clutch while braking is in p ...

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 t ...

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