Pattern Select Switch Power Mode Circuit [10/2013 - ]: Procedure

READ VALUE USING TECHSTREAM (CAN BUS CHECK) See step 2
B → See step 10

A: Go to next step
CHECK DTC OUTPUT (HEALTH CHECK) See step 3
B → GO TO DTC CHART

A: Go to next step

PERFORM ACTIVE TEST USING TECHSTREAM (COMBINATION METER)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Body Electrical / Combination Meter / Active Test / Indicat. Lamp ECT PWR.

Perform the "Indicat. Lamp ECT PWR" Active Test.

Tester Display	Description	Inspection Condition	Specified Condition
Indicat. Lamp ECT PWR	Pattern select indicator light (PWR)	POWER mode	Comes on

Result

Result	Proceed to
The POWER mode indicator light comes on	A
The POWER mode indicator light does not come on	B

B → See step 11

A: Go to next step

READ VALUE USING TECHSTREAM (PATTERN SWITCH (PWR/M))

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Data List / Pattern Switch (PWR/M).

Read the value displayed on the Techstream.

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Pattern Switch (PWR/M)	POWER mode switch condition/ ON or OFF	POWER mode switch ON: ON POWER mode switch OFF: OFF	-

Result

Result	Proceed to
The Techstream display changes according to the POWER mode switch operation.	A
The Techstream display does not changes according to the POWER mode switch operation.	B

B → See step 5

A → See step 9

INSPECT INTEGRATION CONTROL AND PANEL SUB-ASSEMBLY (POWER MODE SWITCH)

Remove the integration control and panel sub-assembly (POWER MODE switch).

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
L78-7 (PWR) - L78-5 (E)	POWER MODE Switch ON	Below 1 Ω
L78-7 (PWR) - L78-5 (E)	POWER MODE Switch OFF	10 kΩ or higher

TEXT IN ILLUSTRATION

*1	Component without harness connected (Integration Control and Panel Sub-assembly (POWER MODE Switch))

Install the integration control and panel sub-assembly.

NG → See step 8

OK: Go to next step

CHECK HARNESS AND CONNECTOR (POWER MODE SWITCH - BODY GROUND)

Disconnect connector L78 from the integration control and panel sub-assembly (POWER MODE switch).

Measure the resistance according to the value(s) in the table below.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
L78-5 (E) - Body ground	Always	Below 1 Ω

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to Integration Control and Panel Sub-assembly (POWER MODE Switch))

Connect the integration control and panel sub-assembly connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR (POWER MODE SWITCH - ECM)

Disconnect connector L78 from the integration control and panel sub-assembly (POWER MODE switch).
Disconnect connector A57 from the ECM.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
L78-7 (PWR) - A57-46 (PWMS)	Always	Below 1 Ω
L78-7 (PWR) or A57-46 (PWMS) - Body ground	Always	10 kΩ or higher

TEXT IN ILLUSTRATION

*1	Front view of wire harness connector (to Integration Control and Panel Sub-assembly (POWER MODE Switch))
*2	Front view of wire harness connector (to ECM)

Connect the integration control and panel sub-assembly connector.
Connect the ECM connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 12

REPLACE INTEGRATION CONTROL AND PANEL SUB-ASSEMBLY. Refer to COMPONENTS [10/2013 - ]
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2013 - ]
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2013 - ]
CHECK METER / GAUGE SYSTEM. Refer to PROBLEM SYMPTOMS TABLE [10/2013 - ]
REPLACE ECM. Refer to COMPONENTS [10/2013 - ]