Toyota Tundra. Manual — part 513

ILLUMINATION RESULT CHART

B: Go to step 5

C: Go TO LIGHTING SYSTEM (See PROBLEM SYMPTOMS TABLE )

D: Go to step 6

A: Go to Next Step

2. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - NAVIGATION RECEIVER AND

BATTERY)

a. Disconnect the J45 cable connector.

Fig. 177: Identifying J45 Cable Connector And K21 Receiver Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the K21 receiver connector.

Result

Proceed

to

Illumination comes on for all components except steering pad switch.

A

Illumination comes on for all components except navigation receiver.

B

No illumination (navigation receiver, glove box light, room light switch, etc.) comes
on.

C

Illumination comes on for all components except steering pad switch and navigation
receiver.

D

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

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

Standard resistance

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

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

Standard voltage

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

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

3. INSPECT STEERING PAD SWITCH ASSEMBLY

Fig. 178: Inspecting Steering Pad Switch Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the z3 switch connector.

Tester Connection

Condition Specified Condition

J45-4(EAU)-K21-6 (SWG) Always

Below 1 ohms

J45-4(EAU)-Body ground

Always

10 kohms or higher

Tester Connection

Switch Condition

Specified Condition

J45-12 (IL+2) -Body ground

Light control switch OFF

Below 1 V

Light control switch TAIL or HEAD

11 to 14 V

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2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

b. Connect the positive (+) lead to terminal 5 (IL+2) and the negative (-) lead to terminal 8 (EAU) of

the steering pad switch connector.

c. Check if the illumination for the steering pad switch comes on.

OK: Illumination for the steering pad switch comes on.

NG: REPLACE STEERING PAD SWITCH ASSEMBLY (See REMOVAL )

OK: Go to Next Step

4. INSPECT SPIRAL CABLE

a. Disconnect the z3 and J45 cable connectors.

Fig. 179: Identifying z3 And J45 Cable Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard resistance

SPIRAL CABLE TESTER CONNECTION SPECIFIED CONDITION

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

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

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

Fig. 180: Identifying K18 Receiver Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Tester Connection

Condition

Specified

Condition

z3-5(IL+2)-J45-12

(IL+2)

Spiral cable is turned 2.5 rotations

counterclockwise

Below 1 ohms

Spiral cable is centered

Spiral cable is turned 2.5 rotations clockwise

Z3-8(EAU)-J45-4(EAU)

Spiral cable is turned 2.5 rotations

counterclockwise

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 ).

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

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra