Toyota Tundra Service Manual: Power Source Circuit

Toyota Tundra Service Manual / Audio, Visual, Telematics / Park Assist / Monitoring / Blind Spot Monitor System / Power Source Circuit

DESCRIPTION

This circuit provides power to operate the blind spot monitor sensor.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH, BLIND SPOT MONITOR SENSOR LH - BATTERY AND BODY GROUND)

(a) Disconnect the blind spot monitor sensor RH connector.

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)

Front view of wire harness connector

(to Blind Spot Monitor Sensor LH)

(b) Disconnect the blind spot monitor sensor LH connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
S6-10 (BRGD) - Body ground or other terminal	Always	Below 1 Ω
S5-10 (BLGD) - Body ground or other terminal	Always	Below 1 Ω

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
S6-5 (BRB) - Body ground	Ignition switch ON	11 to 14 V
S6-5 (BRB) - Body ground	Ignition switch off	Below 1 V
S5-5 (BLB) - Body ground	Ignition switch ON	11 to 14 V
S5-5 (BLB) - Body ground	Ignition switch off	Below 1 V

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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Toyota Tundra Service Manual: Power Source Circuit

Parts Location

Precaution

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