Toyota Tundra Service Manual: Steering Pad Switch Circuit

DESCRIPTION

The forward recognition camera receives a lane departure alert switch signal from the steering pad switch assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

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PROCEDURE

1.

INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Remove the steering pad switch assembly.

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(b) Inspect the steering pad switch assembly.

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NG

REPLACE STEERING PAD SWITCH ASSEMBLY

OK

2.

INSPECT SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

(a) Remove the spiral with sensor cable sub-assembly.

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(b) Inspect the spiral with sensor cable sub-assembly.

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NG

REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA)

(a) Disconnect the J45 spiral with sensor cable sub-assembly connector.

(b) Disconnect the W9 forward recognition camera connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J45-11 (DIST) - W9-3 (LKSW)

Always

Below 1 Ω

J45-11 (DIST) or W9-3 (LKSW) - Body ground

Always

10 kΩ or higher

(d) Connect the W9 forward recognition camera connector.

(e) Connect the J45 spiral with sensor cable sub-assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

CHECK HARNESS AND CONNECTOR (SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY - ECM)

(a) Disconnect the J45 spiral with sensor cable sub-assembly connector.

(b) Disconnect the A24 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J45-2 (ECC) - A24-59 (ECCS)

Always

Below 1 Ω

J45-2 (ECC) or A24-59 (ECCS) - Body ground

Always

10 kΩ or higher

(d) Connect the J45 spiral with sensor cable sub-assembly connector.

(e) Connect the A24 ECM connector.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Problem Symptoms Table

    System Description

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