Toyota Tacoma (2015-2018) Service Manual: Neutral Position Switch Circuit
DESCRIPTION
The ECM uses the neutral position switch installed to the manual transmission assembly to detect when the transmission is in the neutral position.
WIRING DIAGRAM
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (NEUTRAL SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Neutral Switch.
(e) Read the value when the shift lever is in neutral and any other position
OK:
|
Tester Display |
Condition |
Normal Condition |
|---|---|---|
|
Neutral Position Switch |
Shift lever is in neutral |
ON |
|
Shift lever is in any position other than neutral |
OFF |
| OK | .gif) |
USE SIMULATION METHOD TO CHECK |
|
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|
2. |
CHECK TERMINAL VOLTAGE (VC) |
(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
|
*a |
Component with harness connected (ECM) |
- |
- |
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E10-23 (VC) - E9-23 (ETHW) |
Ignition switch ON |
4.8 to 5.2 V |
| NG | |
GO TO SFI SYSTEM |
|
|
3. |
CHECK HARNESS AND CONNECTOR (ECM - NEUTRAL POSITION SWITCH) |
(a) Disconnect the E9, E10 and E11 ECM connectors.
(b) Disconnect the N37 neutral position switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E10-23 (VC) - N37-1 (W1) |
Always |
Below 1 Ω |
|
E11-22 (NPSW) - N37-2 (TMN) |
Always |
Below 1 Ω |
|
E9-23 (ETHW) - N37-3 (F+) |
Always |
Below 1 Ω |
|
E10-23 (VC) or N37-1 (W1) - Body ground |
Always |
10 kΩ or higher |
|
E11-22 (NPSW) or N37-2 (TMN) - Body ground |
Always |
10 kΩ or higher |
|
E9-23 (ETHW) or N37-3 (F+) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK TERMINAL VOLTAGE (NPSW) |
(a) Measure the voltage according to the value(s) in the table below.
|
*a |
Component with harness connected (ECM) |
- |
- |
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E11-22 (NPSW) - E9-23 (ETHW) |
Ignition switch ON, shift lever in neutral |
2.7 to 4.3 V |
|
Ignition switch ON, shift lever in any position other than neutral |
0.7 to 1.9 V |
| OK | |
REPLACE ECM |
|
|
5. |
REPLACE NEUTRAL POSITION SWITCH |
(a) Replace the neutral position switch.
Click here .gif)
|
|
6. |
READ VALUE USING TECHSTREAM (NEUTRAL SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / Neutral Switch.
(e) Read the value when the shift lever is in neutral and any other position
OK:
|
Tester Display |
Condition |
Normal Condition |
|---|---|---|
|
Neutral Switch |
Shift lever is in neutral |
ON |
|
Shift lever is in any position other than neutral |
OFF |
| OK | |
END |
| NG | |
REPLACE ECM |
Cruise SET Indicator Light Circuit
DESCRIPTION
The ECM illuminates the cruise control SET indicator by sending indicator output
demand signals to the combination meter assembly via CAN communication. The cruise
control SET indicat ...
Other materials:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...
Manual Transmission Unit
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
*1
SHIFT DETENT BALL PLUG
*2
SHIFT DETENT BALL COMPRESSION SPRING
*3
MANUAL TRANSMISSION FILLER PLUG
*4
SHAFT DETENT BALL
*5
...
Fail-safe Chart
FAIL-SAFE CHART
If there is a problem with sensor signals or actuator systems, the skid
control ECU prohibits power supply to the brake actuator assembly and informs
the ECM of a VSC system malfunction.
The brake actuator assembly turns off the solenoids and the ECM stops
its ...
