| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VJLD |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): Engine does not Start but Initial Combustion Occurs; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
Engine does not Start but Initial Combustion Occurs |
DESCRIPTION
The key ID code of the transponder chip inside the IG key is compared against the key ID code registered in the transponder key ECU assembly. While checking the code, the transponder key ECU assembly supplies electrical power to the transponder chip in the key by means of the transponder key coil. If the codes match, the immobiliser is then UNSET (released), and after the E/G start permission signal is sent to the ECM, if communication is functioning properly, E/G start can be performed.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
When replacing the key and transponder key ECU assembly, refer to the Registration (See page
![2016 - 2020 MY Sienna [12/2015 - ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): REGISTRATION](/t3Portal/stylegraphics/info.gif)
).
-
When replacing the ECM, refer to the INITIALIZATION (See page
).
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Check for DTCs (See page
).
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
Result
|
Result |
Proceed to |
|---|---|
|
No DTC output |
A |
|
DTC output |
B |
| B |
|
|
|
2. |
READ VALUE USING TECHSTREAM (IMMOBILISER FUEL CUT) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine and ECT / Data List.
Engine and ECT
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Immobiliser Fuel Cut |
Status of immobiliser fuel cut / ON or OFF |
- |
- |
OK:
The item in the Data List indicates "OFF"
Result
|
Result |
Proceed to |
|---|---|
|
NG |
A |
|
OK |
B |
| B |
|
|
|
3. |
CHECK WHETHER ENGINE STARTS |
(a) It leaves for 5 seconds by the ignition switch ON status, and the engine starting operation is done.
Result
|
Result |
Proceed to |
|---|---|
|
Engine cannot be started |
A |
|
Engine can be started |
B |
| B |
|
|
|
4. |
CHECK ECM (TERMINAL IMI) |
(a) Using an oscilloscope, check the waveform.
Text in Illustration
|
*a |
Component with harness connected (ECM) |
*b |
Component with harness connected (Transponder Key ECU Assembly) |
|
*c |
Waveform 1 |
*d |
Waveform A |
|
*e |
Waveform B |
*f |
160 ms |
|
*g |
510 ms |
- |
- |
Measurement Condition
|
Item |
Content |
|---|---|
|
Tester Connection |
A39-40 (IMI) - D151-13 (EFIO) |
|
Tool Setting |
2 V/DIV., 500 ms./DIV. |
|
Condition |
Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected |
HINT:
The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
OK:
Waveform is output normally (refer to illustration).
Result
|
Result |
Proceed to |
|---|---|
|
Normal waveform |
A |
|
Waveform (waveform A) not output, or has abnormal wavelength or shape |
B |
|
Waveform (waveform B) not output, or has abnormal wavelength or shape |
C |
| B |
|
| C |
|
|
|
5. |
CHECK ECM (TERMINAL IMO) |
(a) Using an oscilloscope, check the waveform.
Text in Illustration
|
*a |
Component with harness connected (ECM) |
*b |
Component with harness connected (Transponder Key ECU Assembly) |
|
*c |
Waveform 1 |
*d |
Waveform C |
|
*e |
160 ms |
*f |
510 ms |
Measurement Condition
|
Item |
Content |
|---|---|
|
Tester Connection |
A39-29 (IMO) - D151-12 (EFII) |
|
Tool Setting |
2 V/DIV., 500 ms./DIV. |
|
Condition |
Within 3 seconds after starter operates and initial combustion occurs, or within 3 seconds after ignition switch first turned to ON after battery disconnected and reconnected |
HINT:
The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
OK:
Waveform is output normally (refer to illustration).
Result
|
Result |
Proceed to |
|---|---|
|
Normal waveform |
A |
|
Waveform 1 (Waveform C) not output, or has abnormal wavelength or shape |
B |
| B |
|
|
|
6. |
REGISTER ECU COMMUNICATION ID |
(a) Register the communication ID between the transponder key ECU assembly and ECM (See page
).
|
|
7. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
Result
|
Result |
Proceed to |
|---|---|
|
Engine can be started |
A |
|
Engine cannot be started |
B |
| A |
|
END (REGISTERED COMMUNICATION ID WAS DEFECTIVE) |
| B |
|
|
8. |
REPLACE ECM |
(a) Temporarily replace the ECM with a new one (See page
).
|
|
9. |
REGISTER ECU COMMUNICATION ID |
(a) Reregister the ECU communication ID (See page
).
|
|
10. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
| OK |
|
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
|
|
11. |
CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - ECM) |
(a) Disconnect the D151 transponder key ECU assembly connector.
(b) Disconnect the A39 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D151-13 (EFIO) - A39-40 (IMI) |
Always |
Below 1 Ω |
|
D151-13 (EFIO) or A39-40 (IMI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
12. |
REPLACE TRANSPONDER KEY ECU ASSEMBLY |
(a) Replace the transponder key ECU assembly with a new one (See page
).
NOTICE:
Key ID code registration is necessary when replacing the transponder key ECU assembly, refer to Registration (See page
).
|
|
13. |
CHECK WHETHER ENGINE STARTS |
(a) Using a registered key, turn the ignition switch to ON.
(b) Check that the engine starts 5 seconds after the ignition switch was turned to ON.
OK:
Engine starts normally.
| OK |
|
END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE) |
| NG |
|
|
|