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
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.
(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 |
|
*a |
Front view of wire harness connector (to ECM) |
(d) Reconnect the ECM connector.
| OK | .gif) |
PROCEED TO PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
|
2. |
INSPECT CLUTCH SWITCH ASSEMBLY |
|
(a) Remove the clutch switch assembly (See page
|
|
.gif)
(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 |
|
|
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:
Engine does not Start because No Initial Combustion
DESCRIPTION
When a key is inserted into the ignition key cylinder, the transponder
key coil receives the key ID code and sends it to the transponder key ECU
assembly.
If an error in communication between the transponder key coil and transponder
key ECU assembly occurs, this s ...
Installation
INSTALLATION
PROCEDURE
1. SET NO. 1 CYLINDER TO TDC/COMPRESSION
2. INSTALL CAMSHAFT TIMING GEAR BOLT
NOTICE:
There are different types of camshaft timing gear bolts. Make sure to check the
identification mark to determine the tightening torque.
*a
Identification Ma ...
ABS Warning Light Remains ON
DESCRIPTION
If any of the following is detected, the ABS warning light remains on.
The skid control ECU (master cylinder solenoid) connectors are disconnected
from the skid control ECU (master cylinder solenoid).
There is a malfunction in the skid control ECU (master cylinder soleno ...
