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:

Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION If the skid control ECU (master cylinder solenoid) determines that the vehicle is being driven at a steep bank angle, the skid control ECU (master cylinder solenoid) stores DTC C1440 while VSC operation is temporarily disabled. It is not a malfunction if the system and sensor circ ...

Blind Spot Monitor Slave Module (C1AB7)
DESCRIPTION This DTC is stored when the blind spot monitor sensor RH detects an internal malfunction. DTC Code DTC Detection Condition Trouble Area C1AB7 The blind spot monitor sensor RH (slave) detects an internal malfunction. ...

Wireless Door Lock Buzzer
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE WIRELESS DOOR LOCK BUZZER (a) Disconnect the connector. (b) Using a clip remover, disengage the clamp to remove the wireless door lock buzzer. Installation ...