Toyota Tundra. Manual — part 571

Fig. 400: Identifying z3 And J45 Cable Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY (See REMOVAL )

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

5. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - BATTERY)

a. Disconnect the K18 receiver connector.

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

Standard voltage

(EAU)

Spiral cable is centered

Spiral cable is turned 2.5 rotations clockwise

CAUTION: The spiral cable is an important part of the SRS airbag system.

Incorrect removal or installation of the spiral cable may prevent
the airbag from deploying. Be sure to read the PRECAUTION for
the supplemental restraint system (see PRECAUTION ).

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

HARNESS AND CONNECTOR (NAVIGATION RECEIVER - BATTERY) TESTER
CONNECTION SPECIFIED CONDITION

Fig. 401: Identifying K18 Receiver Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

6. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - COMBINATION

METER)

a. Disconnect the K18 display connector.

b. Disconnect the J28 meter connector.

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

Standard resistance

HARNESS AND CONNECTOR (NAVIGATION RECEIVER - COMBINATION METER)
TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Switch Condition

Specified Condition

K18-2 (ILL+) - Body ground

Light control switch TAIL or HEAD

11 to 14 V

Light control switch OFF

Below 1 ohms

Tester Connection

Condition Specified Condition

K18-12 (ILL-) - J28-37 (ILL-) Always

Below 1 ohms

K18-12 (ILL-) - Body ground

Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 402: Identifying K18 Display Connector And J28 Meter Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

PARKING BRAKE SWITCH CIRCUIT

DESCRIPTION

This circuit is from the parking brake switch to the navigation receiver.

WIRING DIAGRAM

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 403: Parking Brake Switch Circuit - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

1. CHECK BRAKE WARNING SWITCH

a. Check that the brake warning switch lights come on when the parking brake is applied and goes off

when it is released.

OK: The brake warning lights operate as specified above.

OK: Go to step 3

NG: Go to Next Step

2. INSPECT PARKING BRAKE SWITCH

a. Disconnect the A5 switch connector.

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

Standard resistance

PARKING BRAKE SWITCH TESTER CONNECTION SPECIFIED CONDITION

Tester Connection

Switch Condition

Specified Condition

A5-1 - Switch body

ON (When shaft is not pressed)

Below 1 ohms

OFF (When shaft is pressed)

10 Kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra