Toyota Tundra. Manual — part 2526

Fig. 9: Front Passenger Side Seat Belt Warning Light - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK FOR DTC

a. Check for DTCs.

1. for CAN communication system (See CAN COMMUNICATION SYSTEM ).

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra

2. for Airbag system (see DTC CHECK/CLEAR ).

3. for Occupant classification system (see DTC CHECK/CLEAR ).

Result:

DTC RESULT CHART

B: Go TO CAN COMMUNICATION SYSTEM

C: Go TO AIRBAG SYSTEM (See DIAGNOSTIC TROUBLE CODE CHART )

D: Go TO OCCUPANT CLASSIFICATION SYSTEM (See DIAGNOSTIC TROUBLE CODE
TABLE )

A: Go to next step.

2. INSPECT FUSE (ECU-IG No. 1)

a. Remove the ECU-IG No. 1 fuse from the passenger side junction block.

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

Standard resistance

FUSE (ECU-IG No. 1) TESTER CONNECTION SPECIFIED CONDITION CHART

NG: REPLACE FUSE

OK: Go to next step.

3. PERFORM ACTIVE TEST BY TECHSTREAM (FRONT PASSENGER SEAT BELT WARNING

LIGHT)

a. Operate the Techstream according to the steps on the display and select "ACTIVE TEST" or

"Active Test".

Techstream

Combination Meter:

COMBINATION METER TECHSTREAM REFERENCE

Result

Proceed to

DTC is not output

A

CAN communication system DTC is output

B

Airbag system DTC is output

C

Occupant classification system DTC is output

D

Tester Connection Condition Specified Condition

ECU-IG No. 1 fuse Always

Below 1 ohms

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra

OK: Go to step 6

NG: Go to next step.

4. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL

COMBINATION METER AND BATTERY)

a. Disconnect the J37 panel connector.

b. Disconnect the J28 meter connector.

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

Standard resistance

HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL
COMBINATION METER AND BATTERY) TESTER CONNECTION SPECIFIED
CONDITION CHART

Standard voltage

HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL
COMBINATION METER AND BATTERY) TESTER CONNECTION SPECIFIED
CONDITION CHART

Item

Test Part

Control

Range

Diagnostic

Note

Indicat. Lamp P-seat

Belt

Front passenger side seat belt
warning light

ON or OFF

-

Tester Connection

Condition Specified Condition

J37-14 (PBEW) - J28-15 (P/SB) Always

Below 1 ohms

J37-14 (PBEW) - Body ground

Always

10 kohms or higher

Tester Connection

Switch Condition Specified Condition

J37-16 (IG+) - Body ground Ignition switch ON

11 to 14 V

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra

Fig. 10: Checking Harness And Connector (Integration Control And Panel Combination
Meter And Battery)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

5. INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY

2009 Toyota Tundra

2009 RESTRAINTS Seat Belt - Tundra