Toyota Tundra. Manual — part 363

HOW TO PROCEED WITH TROUBLESHOOTING

HINT:



Use these procedures to troubleshoot the engine immobilizer system.



*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

2. INSPECT BATTERY VOLTAGE

Standard voltage: 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

3. CRANK ENGINE FOR MORE THAN 10 SECONDS

4. CHECK FOR DTC*

a. Check for DTCs and note any codes that are output (see DTC CHECK/CLEAR ).

b. Clear the DTCs (see DTC CHECK/CLEAR ).

c. Recheck for DTCs. Try to duplicate the DTC (SFI system and engine immobilizer system) by

simulating the symptoms indicated by the DTC.

Result

DTC RESULT CHART

B: Go to SFI SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

C: Go to SFI SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

D: Go to SFI SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )

E: Go to DIAGNOSTIC TROUBLE CODE CHART

A: Go to Next Step

5. PROBLEM SYMPTOMS TABLE

Result

Result

Proceed to

DTC is not output

A

SFI system (for 2UZ-FE) DTC is output

B

SFI system (for 3UR-FE) DTC is output

C

SFI system (for 3UR-FBE) DTC is output

D

Engine immobilizer system DTC is output

E

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Engine Immobilizer - Tundra

RESULTS

B: Go to step 7

A: Go to Next Step

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

a. See DATA LIST / ACTIVE TEST

b. See TERMINALS OF ECU

7. ADJUST, REPAIR OR REPLACE

8. CONFIRMATION TEST

NEXT: END

REGISTRATION

1. DESCRIPTION OF CODE REGISTRATION

a. When adding master keys or sub-keys (additional registration).

1. Register key code in the transponder key ECU.

CODE REGISTRATION SYSTEM REFERENCE CHART

b. After replacing the transponder key ECU (New key code registration).

1. Register the key code (immobilizer code) in the new transponder key ECU.

CODE REGISTRATION SYSTEM REFERENCE CHART

2. Register the ECU - ECM COMMUNICATION ID between the ECM and the new

transponder key ECU.

CODE REGISTRATION SYSTEM REFERENCE CHART

c. After replacing the ECM.

1. Reregister the ECU - ECM COMMUNICATION ID between the new ECM and the

Result

Proceed to

Fault is not listed in problem symptoms table

A

Fault is listed in problem symptoms table

B

Target ECU

See Procedure

Transponder key ECU Procedure "A"

Target ECU

See Procedure

Transponder key ECU Procedure "B"

Target ECU See Procedure

ECM

Procedure "C"

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Engine Immobilizer - Tundra

transponder key ECU.

CODE REGISTRATION SYSTEM REFERENCE CHART

d. After replacing the transponder key ECU and ECM.

1. Register the ECU - ECM COMMUNICATION ID between the new ECM and the new

transponder key ECU.

CODE REGISTRATION SYSTEM REFERENCE CHART

e. Erasure of key codes.

1. Erase all of the key codes except master key.

CODE REGISTRATION SYSTEM REFERENCE CHART

2. Erase all of the key codes.

CODE REGISTRATION SYSTEM REFERENCE CHART

2. NEW KEY REGISTRATION (PROCEDURE "B")

a. New key code registration

HINT:



This mode operates normally when no key codes are registered in the transponder key ECU.



When a new transponder key ECU is installed, key codes must be registered in the
transponder key ECU.



In this mode, a maximum of 3 key codes for 2 master keys and 1 sub-key can be registered.
The master keys and sub-key can be registered in any order because the transponder key
ECU can distinguish between different types of keys.



New key codes must be registered with the battery connected. The ignition switch can be
either ON or OFF.

CODE REGISTRATION REFERENCE

Target ECU

See Procedure

Transponder key ECU Procedure "C"

Target ECU

See Procedure

Transponder key ECU Procedure "C"

Target ECU

See Procedure

Transponder key ECU Procedure "D"

Target ECU

See Procedure

Transponder key ECU Procedure "D"

Procedure

Security Indicator Light Condition

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Engine Immobilizer - Tundra

b. End the new key code registration mode (when not using Techstream)

HINT:

The automatic key code registration mode can be forced to end when at least 1 key code
(immobilizer code) for a master key has been registered.

1. Turn the ignition switch ON and LOCK 5 times within 10 seconds using a master key that

has already been registered.

c. End the new key code registration mode (when using Techstream)

HINT:

The automatic key code registration mode can be forced to end when at least 1 key code
(immobilizer code) for a master key has been registered.

1. Insert the key into the ignition key cylinder and turn the Techstream ON.

2. Follow the instructions on the Techstream screen to end the new key code registration mode.

1. Start registration.

Security indicator light is blinking.

2. Insert one of master keys into the
ignition key cylinder.

Security indicator light turned on.

3. Select following items on the tester:

1. Body Electrical

2. Immobilizer

3. ID Utility

4. Immobilizer Code Registration

HINT:

After above operation, proceed
to next step in accordance with
prompts on the tester screen.

Security indicator light turned off for 1 SEC. and then
turned on.

4. Remove the key.

Security indicator light turned on.
HINT:
When the maximum number of the key codes is registered,
the security indicator light remains off until the last key
registered is removed. After it is removed, the security
indicator light starts blinking.

5. Register another key?
YES: Go to step 6.
NO: Go to step 7.
HINT:
Key codes for a maximum of 2 master
keys and 1 sub-key can be registered.
6. Insert another key into the ignition
key cylinder. Then go to step 4.

Security indicator light turned off for 1 SEC. and then
turned on.

7. End of registration.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Engine Immobilizer - Tundra