Toyota Tundra. Manual — part 2492

B: Go to step 2

C: Go to step 4

D: Go to step 6

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

2. INSPECT IGNITION KEY CYLINDER LIGHT

a. w/ Engine Immobilizer System:

1. Remove the ignition key cylinder light (see REMOVAL ).

Fig. 75: Identifying Ignition Key Cylinder Light Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. w/o Engine Immobilizer System:

1. Remove the ignition key cylinder light (see REMOVAL ).

c. Connect the battery's positive (+) lead to terminal 2 (ILL+) and the negative (-) lead to terminal 6

(ILL-), and then check that the light turns on.

OK: Ignition key cylinder light turns on.

Result

RESULT CHART

B: REPLACE IGNITION KEY CYLINDER LIGHT (See REMOVAL )

NG (Only foot light does not turn on)

C

NG (Only map light does not turn on)

D

Result

Proceed to

OK

A

NG (w/ Engine Immobilizer System)

B

NG (w/o Engine Immobilizer System)

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Lighting - Tundra

C: REPLACE IGNITION KEY CYLINDER LIGHT (See INSPECTION PROCEDURE)

A: Go to next step

3. CHECK HARNESS AND CONNECTOR (IGNITION KEY CYLINDER LIGHT - MAIN BODY

ECU AND BATTERY)

Fig. 76: Identifying Ignition Key Cylinder Light And Main Body ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Disconnect the J20*1 or J99*2 light connector.

HINT:

*1: w/ Engine Immobilizer System

*2: w/o Engine Immobilizer System

b. Disconnect the DD ECU connector.

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

Standard voltage

w/ Engine Immobilizer System

IGNITION KEY CYLINDER LIGHT - MAIN BODY ECU AND BATTERY VOLTAGE
(W/ENGINE IMMOBILIZER SYSTEM)

w/o Engine Immobilizer System

IGNITION KEY CYLINDER LIGHT - MAIN BODY ECU AND BATTERY VOLTAGE
(W/O ENGINE IMMOBILIZER SYSTEM)

Tester Connection

Condition Specified Condition

J20-2 (ILL+) - Body ground Always

11 to 14 V

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Lighting - Tundra

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

Standard resistance

w/ Engine Immobilizer System

IGNITION KEY CYLINDER LIGHT - MAIN BODY ECU AND BATTERY RESISTANCE
(W/ENGINE IMMOBILIZER SYSTEM

w/o Engine Immobilizer System

IGNITION KEY CYLINDER LIGHT - MAIN BODY ECU AND BATTERY RESISTANCE
(W/O ENGINE IMMOBILIZER SYSTEM

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE MAIN BODY ECU

4. INSPECT FOOT LIGHT

a. Remove the foot light (see REMOVAL ).

Tester Connection

Condition Specified Condition

J99-2 (ILL+) - Body ground Always

11 to 14 V

Tester Connection

Condition Specified Condition

J20-6 (ILL-) - DD-51 (ILE) Always

Below 1 ohms

J20-6 (ILL-) - Body ground Always

10 kohms or higher

Tester Connection

Condition Specified Condition

J99-6 (ILL-) - DD-51 (ILE) Always

Below 1 ohms

J99-6 (ILL-) - Body ground Always

10 kohms or higher

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Lighting - Tundra

Fig. 77: Identifying Foot Light Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Connect the battery's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1, and then

check that the light turns on.

OK: Foot light turns on.

NG: REPLACE FOOT LIGHT (see REMOVAL )

OK: Go to next step

5. CHECK HARNESS AND CONNECTOR (FOOT LIGHT - MAIN BODY ECU AND BATTERY)

a. Disconnect the J51 light connector.

b. Disconnect the DD ECU connector.

Fig. 78: Identifying Foot Light And Main Body ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

Standard voltage

FOOT LIGHT - MAIN BODY ECU AND BATTERY VOLTAGE

Tester Connection Condition Specified Condition

J51-1 - Body ground Always

11 to 14 V

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Lighting - Tundra