Toyota Tacoma (2015-2018) Service Manual: Clutch Switch Circuit

Toyota Tacoma (2015-2018) Service Manual / Vf2cm Transfer / Touch Select 2-4 And High-low System / Clutch Switch Circuit

DESCRIPTION

While depressing the clutch pedal, the clutch start switch assembly sends a signal to terminal MTN of the 4 wheel drive control ECU. While the signal is input, switching between H4 and L4 is possible.

WIRING DIAGRAM

PROCEDURE

1.	READ VALUE USING TECHSTREAM (CLUTCH SWITCH)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Enter the following menus: Powertrain / Four Wheel Drive / Data List.

(f) According to the display on the Techstream, read the Data List.

Four Wheel Drive

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Clutch SW	Clutch start switch status/ ON or OFF	ON: Clutch pedal depressed OFF: Clutch pedal released	Used only for vehicles with a manual transmission. Displays OFF for vehicles with an automatic transmission.

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Clutch SW

Clutch start switch status/

ON or OFF

ON: Clutch pedal depressed

OFF: Clutch pedal released

Used only for vehicles with a manual transmission.

Displays OFF for vehicles with an automatic transmission.

OK:

The display changes according to the clutch pedal operation.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2.	CHECK SFI SYSTEM

(a) Check that the SFI system operates normally.

for 2TR-FE: See page
for 2GR-FKS: See page

OK:

SFI system operates normally.

Result

Result	Proceed to
OK	A
NG (for 2TR-FE)	B
NG (for 2GR-FKS)	C

CHECK SFI SYSTEM

3.	CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - CLUTCH START SWITCH ASSEMBLY)

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

(b) Disconnect the C8 clutch start switch assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F13-18 (MTN) - C8-1	Always	Below 1 Ω
F13-18 (MTN) or C8-1 - Body ground	Always	10 kΩ or higher

REPLACE 4 WHEEL DRIVE CONTROL ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

Transfer Shift Motor Limit Switch Circuit (P17AC)

DESCRIPTION When the transfer switches modes, the TL1, TL2 and TL3 terminals of the limit switch are in one of the ON/OFF combinations listed in the table below. Terminal Whe ...

Lost Communication with ECM / PCM "A" (U0100,U0122)

DESCRIPTION This DTC is output when communication is lost with the skid control ECU (brake actuator assembly) or ECM. DTC No. Detection Item DTC Detection Conditio ...

Other materials:

Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. Click here IGNITION SWITCH EXPRESSIONS (a) The type of ignition switch ...

HD Radio Tuner Malfunction (B1551,B15A0,B15AD,B15B0,B15B3,B15B4,B15B7)
DESCRIPTION These DTCs are stored when a malfunction occurs in the navigation receiver assembly. DTC No. DTC Detection Condition Trouble Area B1551 When one of the conditions below is met: "HD Radio" tuner decoder ...

Vacuum Warning Switch
Components COMPONENTS ILLUSTRATION On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT BRAKE FLUID LEVEL IN RESERVOIR 2. INSPECT BRAKE BOOSTER ASSEMBLY 3. INSPECT VACUUM WARNING SWITCH ASSEMBLY (a) Start the engine and stop it after 1 or 2 minutes. (b) Disconnect the ...