Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Clutch Switch Circuit

DESCRIPTION

Clutch switch circuit inspection is necessary for manual transmission vehicles.

When the clutch pedal is released, the ECM receives the positive (+) battery voltage through the ECU-IG NO. 2 fuse and ignition switch. While the clutch pedal is depressed, the clutch switch assembly sends a signal to terminal D of the ECM. The ECM cancels cruise control when terminal D receives the signal (voltage of below 1 V).

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (ECM - BATTERY)

(a) Disconnect the ECM connector.

(b) Turn the ignition switch to the ON position.

(b) Turn the ignition switch to the ON position.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

E12-27 (D) - Body ground

Clutch pedal depressed

Below 1 V

E12-27 (D) - Body ground

Clutch pedal released

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to ECM)

(d) Reconnect the ECM connector.

OK

PROCEED TO PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT CLUTCH SWITCH ASSEMBLY

(a) Remove the clutch switch assembly (See page ).

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C14-1 - C14-2

Clutch pedal depressed

10 kΩ or higher

C14-1 - C14-2

Clutch pedal released

Below 1 Ω

(c) Reinstall the clutch switch.

NG

REPLACE CLUTCH SWITCH ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (CLUTCH SWITCH ASSEMBLY - ECM)

(a) Disconnect the E12 ECM connector.

(b) Disconnect the C14 clutch switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C14-2 - Body ground

Always

10 kΩ or higher

C14-2 - E12-27 (D)

Always

Below 1 Ω

(d) Reconnect the clutch switch connector.

(e) Reconnect the ECM connector.

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH SWITCH ASSEMBLY - BATTERY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH SWITCH ASSEMBLY - ECM)

Brake System (P157800)
DESCRIPTION This DTC is output when the VSC system has a problem. Check the VSC system when this DTC is output. DTC No. DTC Detection Condition Trouble Area ...

Brake Switch "A" Signal Compare Failure (P057162)
DESCRIPTION When the brake pedal is depressed, stop light switch assembly sends a signal to the ECM. Upon receiving the signal, the ECM cancels the cruise control system. DTC Code ...

Other materials:

Data Signal Circuit between Radio Receiver and Extension Module
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Engine Immobiliser System Signal (Some Circuit Quantity, Reported via Serial Data) Invalid (B279986)
DESCRIPTION When there are communication malfunctions between the ECM and certification ECU (smart key ECU assembly), or when the communication ID codes do not match, the ECM stores this DTC. DTC Code DTC Detection Condition Trouble Area DTC Output C ...

Blind Spot Monitor Sensor Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Blind Spot Monitor Sensor Communication Stop Mode Either Condition is met: Communication stop for "Blind Spot Monitor Master" is indicated on the "Communic ...

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