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

Toyota Tacoma (2015-2018) Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / 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

NOTICE:

When replacing the skid control ECU (master cylinder solenoid), perform calibration (See page 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
S1-29 (EXI4) - Body ground	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))

GO TO STEP 3

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

REPLACE MASTER CYLINDER SOLENOID

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.

(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

GO TO TRANSFER SYSTEM (PROBLEM SYMPTOMS TABLE)

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:

Illumination for Panel Switch does not Come on with Tail Switch ON
PROCEDURE 1. CHECK VEHICLE SIGNAL (OPERATION CHECK) (a) Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check (See page ). (b) Check that the display changes between ON and OFF according to the light control ...

Precaution
PRECAUTION 1. EXPRESSIONS OF IGNITION SWITCH HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section. Expression Ignition Switch (Position) ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Smart Key System DTC Code Detection Item See page B27A1 Open in Driver Side Electrical Antenna Circuit B27A5 Open in Front Floor Electrical Key Oscillator Circuit ...