Toyota Tacoma (2015-2018) Service Manual: Pattern Select Switch Power Mode Circuit

Toyota Tacoma (2015-2018) Service Manual / Ac60e Automatic Transmission / Transaxle / Automatic Transmission System(for 2tr-fe) / 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 ).

(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

Text in Illustration

*1	Pattern Select Switch Assembly

REPLACE PATTERN SELECT SWITCH ASSEMBLY

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

Text in Illustration

*a	Front view of wire harness connector (to Pattern Select Switch Assembly))

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
E21-14 (PWMS) - Body ground	Pattern select switch assembly pushed	Below 1 Ω
E21-14 (PWMS) - Body ground	Pattern select switch assembly not pushed	10 kΩ or higher

Text in Illustration

*a	Rear view of wire harness connector (to ECM)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

Transmission Fluid Temperature Sensor "A" Performance (P0711)

DESCRIPTION The No. 1 ATF temperature sensor converts the fluid temperature into a resistance value for use by the ECM. The ECM applies a voltage to the temperature sensor through terminal THO1 of ...

Transmission Control Switch Circuit

DESCRIPTION After moving the shift lever to S, it is possible to switch the shift range between "1" (S1 range) and "6" (S6 range) using the transmission control switch. Moving ...

Other materials:

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 Open or short is detected in shift solenoid valve SLU circuit for 1 second or more while d ...

Inspection
INSPECTION PROCEDURE 1. INSPECT PROPELLER SHAFT WITH CENTER BEARING ASSEMBLY (a) Using a dial indicator, check the propeller shaft runout. Maximum runout: 0.6 mm (0.0236 in.) If the shaft runout is greater than the maximum, replace the shaft. 2. INSPECT PROPELLER SHAFT (a) Using a dial ...

Front Camera Module Beam Axis Not Adjusted (C1AA9)
DESCRIPTION If forward recognition camera adjustment has not been performed or did not complete normally after the forward recognition camera was replaced with a new one, DTC C1AA9 will be stored. DTC No. Detection Item DTC Detection Condition Troubl ...