Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Open in ABS Solenoid Relay Circuit (C146E,C146F)

DESCRIPTION

The ABS solenoid relay is built into the master cylinder solenoid.

This relay supplies power to each ABS solenoid. After the ignition switch is turned ON, if the initial check is OK, the relay turns on.

DTC No.

DTC Detecting Conditions

Trouble Areas

C146E

When either of following condition detected:

  1. Both of following conditions continue for at least 0.2 seconds.
    1. IG voltage between 9.5 V and 17 V.
    2. Relay contact open when relay ON
  2. Both of the following conditions continue for at least 0.2 seconds.
    1. IG voltage 9.5 V or less when relay ON.
    2. Relay contact remains open.
  • ABS NO. 2 fuse
  • ABS solenoid relay
  • ABS solenoid relay circuit
  • Master cylinder solenoid

C146F

The following condition continues for at least 0.2 seconds.

  • Relay contact closed immediately after turning IG switch to the ON position when the relay OFF.
  • ABS NO. 2 fuse
  • ABS solenoid relay
  • ABS solenoid relay circuit
  • Master cylinder solenoid

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the skid control ECU (master cylinder solenoid), perform zero point calibration (See page ). Inspect the fuses for circuits related to this system before performing ).
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

INSPECT SKID CONTROL ECU CONNECTOR (+BS TERMINAL VOLTAGE)

(a) Disconnect the skid control ECU connector.

(b) Measure the voltage.

Standard Voltage:

Tester Connection

Specified Condition

S1-31 (+BS) - Body ground

10 to 14 V

(c) Reconnect the skid control ECU connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK HARNESS OR CONNECTOR (GND - BODY GROUND)

(a) Disconnect the skid control ECU connectors.

(b) Measure the resistance.

Standard Resistance:

Tester Connection

Specified Condition

S1-1, 32 (GND1, GND2) - Body ground

Below 1 Ω

S2-4 (GND3) - Body ground

Below 1 Ω

(c) Reconnect the skid control ECU connectors.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT)

OK

3.

RECONFIRM DTC

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

(b) Check if the same DTCs are recorded.

Result

Proceed to

DTC output

A

DTC not output

B

A

REPLACE MASTER CYLINDER SOLENOID

B

END

Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) (C1277,...,C1416)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1277 C1278 Stored only during t ...

ECM Communication Circuit Malfunction (C1203)
DESCRIPTION The circuit sends TRAC, A-TRAC and VSC control information from the skid control ECU (master cylinder solenoid) to the ECM, and engine control information from the ECM to the skid con ...

Other materials:

Transmission Control Switch Circuit
DESCRIPTION After moving the shift lever to S, it is possible to switch the shift range between "1" (S1 range) and "6" (S6 range) using the transmission control switch. Moving the shift lever to "+" once raises the shift range by one, and moving the shift lever to ...

Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch
DESCRIPTION When the engine is running or the ignition switch is ON, the front power window regulator motor assembly RH is operated by the front power window regulator switch assembly RH. The front power window regulator motor assembly RH has motor, regulator, and ECU functions. HINT: If th ...

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals ...

© 2011-2019 Copyright www.ttguide.net