ignition LEXUS ES300 2005 Manual PDF

DIAGNOSTIC TESTER IMMOBILIZER FUNCTIONS ± SS005-01 Revised July 6, 2001
Page 13 of 14
D. Verify that keys are registered correctly by starting the engine with each newly
registered key.
NOTE:
If the vehicle starts, the new key code was registered correctly.
If the vehicle does not start with any key, perform the Immobilizer Reset function
again.
If only one of the registered keys will not start the vehicle, attempt to register the
key again following the Transponder Code Registration procedure (page 5 of
this bulletin).
5. Transponder ECU Replacement
When the Transponder ECU is replaced, the transponder keys must be registered,
auto registration closed, and ECU communication completed.
A. Replacement transponder ECUs are in auto registration mode. This allows
transponder keys to automatically register as they are inserted into the ignition
cylinder. It is possible to automatically register 3 Master Keys, and 1 Sub Key.
NOTE:
If 4 keys are registered at this time, auto registration mode is closed.
If less than 4 keys are registered at this time, auto registration mode must be closed
manually by cycling the ignition ON/OFF more than 5 times in 10 seconds.
If more than 4 keys need to be registered, use Transponder Code Registration
procedure (page 5 of this bulletin).
B. Once auto registration mode is closed, ECU Communication must be performed
between the transponder ECU and the Engine ECU. Complete ECU
communication using the following steps:
a. Insert registered Master Key into the ignition cylinder.
b. Turn ignition ON (engine OFF).
c. Short Tc and CG terminals of DLC3 using Diagnosis Check Wire
(SST 09843±18040 or equivalent) and leave for 30 minutes. (See Figure 10.)
16 15 14 13 12 11 10 9
87 654321
View of Connector Is From Passenger Compartment
FIGURE 10. DLC3
Tc = Pin 13
CG = Pin 4SST 09843±18040
d. After 30 minutes, turn ignition OFF and remove check wire from DLC3
e. Start the vehicle to confirm successful ECU communication.
NOTE:
If ECU communication is not completed correctly, the engine will not start and DTC
B2799 will be set. DTC B2799 will be cleared after engine starts correctly. Operation
Procedure
(Continued)
TRANSPONDER
ECU RESET
TRANSPONDER
ECU
REPLACEMENT

DIAGNOSTIC TESTER IMMOBILIZER FUNCTIONS ± SS005-01 Revised July 6, 2001
Page 14 of 14
HINT:
The security indicator light reveals the following information:
Always ON and NO key in IG
* = Transponder ECU in Auto Registration mode
Blinking and NO key in IG = Normal operation
Blinking Code 21 = Transponder Code Registration failed
Blinking Code 22 = Attempt was made to register an already
registered Transponder Code
* Immediately after the transponder ECU is installed, the security indicator will blink.
Blinks Code 2±2Code 2±1
1.8 sec
0.2
sec0.25 sec
0.25
sec1 sec
0.5
sec0.25 sec
0.25
sec1 sec
0.5
sec
6. Engine ECU Replacement
When the Engine ECU is replaced, ECU communication must be completed.
ECU Communication must be performed between the transponder ECU and the
Engine ECU. Complete ECU communication using the following steps:
A. Insert registered Master Key into the ignition cylinder.
B. Turn ignition ON (engine OFF).
C. Short Tc and CG terminals of DLC3 using Diagnosis Check Wire
(SST 09843±18040 or equivalent) and leave for 30 minutes. (See Figure 11.)
16 15 14 13 12 11 10 9
87 654321
FIGURE 11. DLC3
Tc = Pin 13
CG = Pin 4SST 09843±18040
View of Connector Is From Passenger Compartment
D. After 30 minutes, turn ignition OFF and remove check wire from DLC3
E. Start the vehicle to confirm successful ECU communication.
NOTE:
If ECU communication is not completed correctly, the engine will not start and DTC
B2799 will be set. DTC B2799 will be cleared after engine starts correctly. Operation
Procedure
(Continued)
TRANSPONDER
ECU
REPLACEMENT
ENGINE ECU
REPLACEMENT

ECM CALIBRATION: SHIFTING ENHANCEMENT ± TC004-03 Revised August 4, 2003
Page 5 of 6
2. Connect the Diagnostic Tester to the vehicle and select CURRENT ECU CAL from
the ECU REPROGRAM MAIN MENU. Determine the vehicle's current ECU
calibration (see Figure 2).
± The sample screen prints seen below are the 12.01a software version and may
differ from subsequent software versions.
Figure 2. Determining Current ECU Calibration
ECU REPROGRAM
MAIN MENU
1: GET CAL FROM PC
2: CURRENT ECU CAL
3: UPDATE ECU CAL
4: CAL ON TESTER
5: CLEAR CAL DATA
A
CURRENT ECU CAL
B
CALIBRATION ID
33341300
53328300
NOTE:
If Calibration ID matches ªPrevious Calibration IDº as shown in Calibration
Identification Chart on page 3, proceed with flash reprogramming.
If Calibration ID matches ªNew Calibration IDº as shown in Calibration Identification
Chart, this vehicle has already been programmed. Refer to TIS for diagnostic
procedures applicable to any stored DTCs.
3. If ECU calibration ID is not the same as the ªNew Calibration IDº listed previously,
proceed to Flash Reprogram ECM (PCM).
4. Flash Reprogram ECM (PCM)
Follow the procedures outlined in Lexus TSIB No. SS001±01,
ªECU Flash
Reprogramming Process,º
and flash the ECM (PCM) with the new calibration
file update.
NOTE:
If the ªCheck Engineº light is ON when the ignition is turned back on to begin the
reprogramming process, a scan tool cable problem exists. Refer to TSIB No.
SS001±01,
ªECU Flash Reprogramming Process.º
Repair
Procedure
(Continued)