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

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