Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Center Differential Lock Position Switch (C1282)

DESCRIPTION

DTC C1282 is stored only in test mode.

DTC Code

DTC Detection Condition

Trouble Area

C1282

Stored during test mode.

  • Harness or connector
  • Transfer system
  • Skid control ECU (master cylinder solenoid)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (master cylinder solenoid), perform calibration (See page PROCEDURE PROCEDURE ).

PROCEDURE

1.

INSPECT SKID CONTROL ECU (EXI4)

(a) Disconnect the S1 skid control ECU (master cylinder solenoid) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

S1-29 (EXI4) - Body ground

  • Ignition switch ON
  • Transfer 2WD position

11 to 14 V

  • Ignition switch ON
  • Transfer 4WD position

Below 1.5 V

Text in Illustration

*a

Front view of wire harness connector

(to Skid Control ECU (Master Cylinder Solenoid))

NG

GO TO STEP 3

OK

2.

CHECK TEST MODE DTC

(a) Switch the vehicle to test mode, perform the 4WD detection switch signal check, and then check that DTC C1282 is cleared (See page Result Result ).

Result

Result

Proceed to

DTC is not cleared

A

DTC is cleared

B

A

REPLACE MASTER CYLINDER SOLENOID

B

USE SIMULATION METHOD TO CHECK

3.

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 4 WHEEL DRIVE CONTROL ECU AND A.D.D. POSITION SWITCH)

(a) Disconnect the S1 skid control ECU (master cylinder solenoid) connector.

(b) Disconnect the F13 4 wheel drive control ECU connector.

(c) Disconnect the A3 A.D.D. position switch (differential vacuum actuator assembly) connector.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

S1-29 (EXI4) - F13-2 (ADD)

Always

Below 1 Ω

S1-29 (EXI4) - A3-3 (ADD)

Always

Below 1 Ω

S1-29 (EXI4) - Body ground

Always

10 kΩ or higher

OK

GO TO TRANSFER SYSTEM (PROBLEM SYMPTOMS TABLE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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 ...

Steering Angle Sensor Zero Point Malfunction (C1290)
DESCRIPTION The skid control ECU (master cylinder solenoid) acquires steering angle sensor zero point every time the ignition switch is turned to ON and the vehicle is driven at 35 km/h (22 mph) ...

Other materials:

Skid Control Buzzer Circuit (C1AA7)
DESCRIPTION The forward recognition camera operates the pre-collision warning by sending a buzzer request signal to the skid control buzzer. If the forward recognition camera detects a malfunction in the skid control buzzer circuit, it will output DTC C1AA7. DTC No. Dete ...

Disassembly
DISASSEMBLY PROCEDURE 1. FIX VANE PUMP (a) Using SST, fix the vane pump assembly in a vise. SST: 09630-00014 09631-00132 NOTICE: When using a vise, do not overtighten it. 2. REMOVE VANE PUMP OIL RESERVOIR SUB-ASSEMBLY (a) Remove the 3 bolts and vane pump oil reservoir. (b) Remove the O-r ...

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL OIL PUMP COVER (a) Apply fresh engine oil to the drive and driven rotors. (b) Place the drive and driven rotors into the timing chain cover assembly with the marks facing the oil pump cover side. Text in Illustration *a ...

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