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
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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 |
(d) Reconnect the ECM connector.
|
Proceed to |
|
OK |
|
NG |
| OK | .gif) |
PROCEED TO PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
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|
2. |
INSPECT CLUTCH SWITCH ASSEMBLY |
|
(a) Remove the clutch switch assembly. Click here |
|
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(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C14-1 - C14-2 |
Switch pin free |
10 kΩ or higher |
|
C14-1 - C14-2 |
Switch pin pushed in |
Below 1 Ω |
(c) Reinstall the clutch switch.
|
Proceed to |
|
OK |
|
NG |
| 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.
|
Proceed to |
|
OK |
|
NG |
| OK | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH SWITCH ASSEMBLY - BATTERY) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (CLUTCH SWITCH ASSEMBLY - ECM) |
Vehicle Information Not Obtained (C1A02)
DESCRIPTION
When a new millimeter wave radar sensor assembly is installed, it receives vehicle
specification information (destination, steering wheel position, 2WD or 4WD, etc.)
from the main bod ...
Cruise Control Switch Circuit
DESCRIPTION
The cruise control main switch is used to turn the dynamic radar cruise control
system on and off, as well as operate 7 functions: SET, - (COAST), TAP-DOWN, RES
(RESUME), + (ACCEL), T ...
Other materials:
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL SAFE OPERATION
If there is a problem with any sensor signals or hydraulic brake booster
systems, the skid control ECU prohibits the power supply to the actuator
in the hydraulic brake booster and informs the ECM of VSC system failure.
The hydraulic brake b ...
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal.
Therefore, make sure to read the disconnecting the cable from the negative (-)
battery terminal notices before p ...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the power mirror control
system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
