Toyota Tacoma (2015-2018) Service Manual: Pattern Select Switch Power Mode Circuit
DESCRIPTION
The ECM memory contains the programs for the normal and PWR shift patterns.
By following the programs corresponding to the signals from the pattern select switch assembly, park/neutral position switch and other various sensors, the ECM switches the shift solenoid valves on and off, and controls the transmission gear ratio.
WIRING DIAGRAM
PROCEDURE
|
1. |
INSPECT PATTERN SELECT SWITCH ASSEMBLY |
|
(a) Remove the pattern select switch assembly (See page
|
|
.gif)
).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 (E) - 4 (B) |
Pattern select switch assembly pushed |
Below 1 Ω |
|
1 (E) - 4 (B) |
Pattern select switch assembly not pushed |
10 kΩ or higher |
|
*1 |
Pattern Select Switch Assembly |
| NG | .gif) |
REPLACE PATTERN SELECT SWITCH ASSEMBLY |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - BODY GROUND) |
|
(a) Disconnect the pattern select switch assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P20-1 (E) - Body ground |
Always |
Below 1 Ω |
|
*a |
Front view of wire harness connector (to Pattern Select Switch Assembly) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - ECM) |
|
(a) Disconnect the ECM connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E13-28 (PWMS) - Body ground |
Pattern select switch assembly pushed |
Below 1 Ω |
|
E13-28 (PWMS) - Body ground |
Pattern select switch assembly not pushed |
10 kΩ or higher |
|
*a |
Rear view of wire harness connector (to ECM) |
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Torque Converter Clutch Pressure Control Solenoid Control Circuit Open (P275613)
DESCRIPTION
Refer to the system description for DTC P27567F (See page
).
DTC No.
DTC Detection Condition
Trouble Area
SAE
P275613
...
Other materials:
CD cannot be Ejected
PROCEDURE
1.
CHECK OPERATION
(a) Press the disc eject switch of the navigation receiver assembly for 5 seconds
or more and check that the CD is ejected.
OK:
CD is ejected.
NG
REPLACE NAVIGATION RECEIVER ASSEMBLY
...
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL-SAFE OPERATION AND DEACTIVATION CONDITION
DIFFERENTIAL SYSTEM (w/ Differential Lock)
DTC No.
Fail-safe Operation
Fail-safe Deactivation Condition
U0122
All switching prohibited
When rear differential is locked ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (w/ Intermittent function)
(a) Remove the steering column cover.
(b) Check the front wiper intermittent operation.
Text in Illustration
*a
Component with harness connected
(Windshield Wiper Sw ...
