Toyota 4Runner: Multi-terrain Select Indicator Light does not Come ON

Toyota 4Runner Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / Multi-terrain Select Indicator Light does not Come ON

DESCRIPTION

When the ON/OFF switch of the multi-terrain select switch is turned on, multi-terrain select control is enabled and the multi-terrain select indicator light illuminates.

After selecting a road surface type using the mode selector switch of the multi-terrain select switch, the system optimizes throttle control and brake fluid pressure control for wheels that slip when accelerating, which allows the power lost when the wheels slip during acceleration to be distributed to all 4 wheels.

The slip indicator light blinks while the system is operating.

The system can operate under the following conditions:

The vehicle stability control system is normal.
The vehicle speed is 12 km/h (7 mph) or less.
Crawl control is not operating.
The selected road surface is "Mud & Sand" and the transfer is set to H4 or L4, or the selected road surface is "Loose Rock", "Mogul" or "Rock" and the transfer is set to L4.

When there is a malfunction in the multi-terrain select system, the multi-terrain select indicator light blinks.

WIRING DIAGRAM

PROCEDURE

1.	CHECK CAN COMMUNICATION LINE

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Select CAN Bus Check from the System Selection Menu screen and follow the prompts on the screen to inspect the CAN bus (See page ).

OK:

CAN Bus Check indicates no malfunctions in CAN communication.

GO TO CAN COMMUNICATION SYSTEM (HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS)

2.	CHECK FOR DTC

(a) Check for DTCs (See page ).

Result

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

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

3.	READ VALUE USING TECHSTREAM (OFF-ROAD GUIDANCE SWITCH (MULTI-TERRAIN SELECT SWITCH))

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / D-SEAT SW / Data List.

D-SEAT SW

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Off-road Guidance Switch	Multi-terrain select switch/ ON or OFF	ON: Multi-terrain select switch on OFF: Multi-terrain select off	-

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Off-road Guidance Switch

Multi-terrain select switch/ ON or OFF

ON: Multi-terrain select switch on

OFF: Multi-terrain select off

OK:

The Techstream displays ON or OFF according to multi-terrain select switch operation.

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

4.	CHECK TERMINAL VOLTAGE AND RESISTANCE (IG, +B, GND)

REPLACE DRIVE MONITOR SWITCH

REPAIR OR REPLACE HARNESS OR CONNECTOR

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