Toyota Tundra (2015 year). Manual — part 2148

(a) Disconnect the W3 ECU connector.

(b) Disconnect the W7 switch connector.

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

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

W3-1 (UP) - W7-6 (UP)

Always

Below 1 Ω

W3-2 (DWN) - W7-5 (DWN)

Always

Below 1 Ω

W3-6 (OPN) - W7-4 (OPN)

Always

Below 1 Ω

W3-7 (CLS) - W7-3 (CLS)

Always

Below 1 Ω

W7-6 (UP) - Body ground

Always

10 kΩ or higher

W7-5 (DWN) - Body ground

Always

10 kΩ or higher

W7-3 (CLS) - Body ground

Always

10 kΩ or higher

W7-4 (OPN) - Body ground

Always

10 kΩ or higher

W7-7 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE SLIDING ROOF DRIVE GEAR

SUB-ASSEMBLY (SLIDING ROOF ECU)

Last Modified: 9-16-2014

6.6 J

Doc ID: RM0000030NW00QX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

READ VALUE USING TECHSTREAM (IGNITION SWITCH SIGNAL)

(a) Use the Data List to check if the ignition switch signal is functioning properly

.

Sliding Roof

TESTER DISPLAY

TEST PART

CONTROL RANGE

DIAGNOSTIC

NOTE

Ignition (MPX)

Ignition switch signal (MPX signal)/ON or

OFF

ON: Ignition switch

ON

OFF: Ignition switch

off

-

Ignition (Direct

Signal)

Ignition switch signal/ON or OFF

ON: Ignition switch

ON

OFF: Ignition switch

-

OK

TESTER DISPLAY

TEST PART

CONTROL RANGE

DIAGNOSTIC

NOTE

off

OK:

GO TO STEP 2

OK

REPLACE SLIDING ROOF DRIVE GEAR

SUB-ASSEMBLY (SLIDING ROOF ECU)

2.

INSPECT FUSE (S/ROOF, ECU-IG No.2)

(a) Remove the S/ROOF and ECU-IG No.2 fuses from the main body ECU.

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

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

S/ROOF fuse

Always

Below 1 Ω

ECU-IG No.2 fuse

Always

Below 1 Ω

NG

REPLACE FUSE

3.

CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU - BATTERY AND BODY
GROUND)

(a) Disconnect the W3 ECU connector.

(b) Measure the voltage according to the value(s) in the table

below.

Standard voltage :

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

W3-9 (IG) - Body ground Ignition switch ON 11 to 14 V

W3-9 (IG) - Body ground Ignition switch off Below 1 V

W3-10 (B) - Body ground Always

11 to 14 V

(c) Measure the resistance according to the value(s) in the table

below.

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

W3-8 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE SLIDING ROOF DRIVE GEAR

SUB-ASSEMBLY (SLIDING ROOF ECU)