Toyota Tacoma 2015-2018 Service Manual: Multi-terrain Select Indicator Light Remains ON

Toyota Tacoma 2015-2018 Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / Multi-terrain Select Indicator Light Remains ON

DESCRIPTION

Refer to Multi-terrain Select Indicator Light does not Come ON (See page WIRING DIAGRAM ).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

CHECK DTC

(a) Check for DTCs (See page Result ).

Result

Result	Proceed to
DTC is not output	A
DTC is output	B

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

3.	INSPECT SKID CONTROL ECU (PKB TERMINAL)

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

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
S1-28 (PKB) - Body ground	Multi-terrain select switch not pushed in	10 kΩ or higher
S1-28 (PKB) - Body ground	Multi-terrain select switch pushed in	Below 1 Ω

Text in Illustration

*a	Front view of wire harness connector (to Skid Control ECU (Master Cylinder Solenoid))

GO TO STEP 5

4.	REPLACE COMBINATION METER ASSEMBLY

(a) Replace the combination meter assembly a new one.

OK:

The multi-terrain select indicator light turns on or off in accordance with the switch operation.

REPLACE MASTER CYLINDER SOLENOID

END

5.	INSPECT DRIVE MONITOR SWITCH

(a) Remove the multi-terrain select switch (drive monitor switch) (See page (b) Inspect the multi-terrain select (drive monitor switch) (See page ).

(b) Inspect the multi-terrain select (drive monitor switch) (See page ).

REPLACE DRIVE MONITOR SWITCH

6.	INSPECT ROOF CONSOLE BOX ASSEMBLY

(a) Remove the roof console box assembly.

for Double Cab: (See page )
for Access Cab: (See page )

Text in Illustration

Component without harness connected

(Roof Console Box Assembly)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
R44-2 (SWI1) - 4	Always	Below 1 Ω
R44-3 (DN) - 7	Always	Below 1 Ω
R44-4 (ECU) - 6	Always	Below 1 Ω
R44-5 (UP) - 3	Always	Below 1 Ω
R44-12 (GND) - 5	Always	Below 1 Ω

Result

Result	Proceed to
OK	A
NG (for Double Cab)	B
NG (for Access Cab)	C

REPAIR OR REPLACE HARNESS OR CONNECTOR (MASTER CYLINDER SOLENOID - ROOF CONSOLE BOX ASSEMBLY)

REPLACE ROOF CONSOLE BOX ASSEMBLY

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