THEFT DETERRENT / KEYLESS ENTRY IMMOBILISER SYSTEM Engine does not Start but Initial Combustion Occurs
DESCRIPTION
If the key ID codes of the door control transmitter assembly and transponder key ECU assembly match, the immobiliser system is unset and the engine start permission signal is sent to the ECM. When the ID codes of the transponder key ECU assembly and ECM match, the engine starts.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
If the transponder key ECU assembly or ECM is replaced, refer to Service Bulletin.
PROCEDURE
Clear the DTCs.
- Body Electrical > Immobiliser > Clear DTCs
- 50002 260
- Powertrain > Engine and ECT > Clear DTCs
- 50002 234
- Result:
Proceed to NEXT
NEXT
Check for DTCs.
- Body Electrical > Immobiliser > Trouble Codes
- 50001 260
- Powertrain > Engine and ECT > Trouble Codes
- 50001 234
- Result:
Result Proceed to DTCs are not output A DTCs are output B
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body Electrical / Engine and ECT / Data List.
Read the Data List according to the display on the GTS.
- Powertrain > Engine and ECT > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Immobiliser Fuel Cut Status of immobiliser system fuel cut ON or OFF - -
- Powertrain > Engine and ECT > Data List
-
Tester Display Immobiliser Fuel Cut - 50003 234 505
- OK:
OFF is displayed after the engine is started.
- Result:
Proceed to OK NG
OK
for 2ZR-FE: Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
for 1ZR-FE: Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
for 2NZ-FE: Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
NG
Using a registered door control transmitter assembly, turn the ignition switch to ON.
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
Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING
B
for 2ZR-FE
Using an oscilloscope, check the waveform.
*a | Component with harness connected
(ECM) |
*b | Waveform 1 |
*c | Waveform 2 | - | - |
Tester Connection | Condition | Tool Setting | Specified Condition |
---|---|---|---|
A40-28 (IMI) - Body ground | Ignition switch ON | 2 V/DIV., 500 ms./DIV. | Pulse generation
(See waveform) |
for 2NZ-FE or 1ZR-FE
Using an oscilloscope, check the waveform.
*a | Component with harness connected
(ECM) |
*b | Waveform 1 |
*c | Waveform 2 | - | - |
Tester Connection | Condition | Tool Setting | Specified Condition |
---|---|---|---|
A56-11 (IMI) - Body ground | Ignition switch ON | 2 V/DIV., 500 ms./DIV. | Pulse generation
(See waveform) |
- Result:
Result Proceed to Normal waveform A Waveform 1 not output, or has abnormal wavelength or shape B Waveform 2 not output, or has abnormal wavelength or shape C
A
B
C
for 2ZR-FE
Using an oscilloscope, check the waveform.
*a | Component with harness connected
(ECM) |
*b | Waveform |
Tester Connection | Condition | Tool Setting | Specified Condition |
---|---|---|---|
A40-29 (IMO) - Body ground | Within 3 seconds of starter operation and initial combustion, or within 3 seconds of ignition switch first being turned to ON after cable disconnected and reconnected to negative (-) battery terminal | 2 V/DIV., 500 ms./DIV. | Pulse generation
(See waveform) |
for 2NZ-FE or 1ZR-FE
Using an oscilloscope, check the waveform.
*a | Component with harness connected
(ECM) |
*b | Waveform |
Tester Connection | Condition | Tool Setting | Specified Condition |
---|---|---|---|
A56-10 (IMO) - Body ground | Within 3 seconds of the ignition switch first being turned to ON after cable is disconnected and reconnected to the negative (-) battery terminal | 2 V/DIV., 500 ms./DIV. | Pulse generation
(See waveform) |
- Result:
Result Proceed to Normal waveform A Waveform not output, or has abnormal wavelength or shape B
A
B
Register the communication ID between the transponder key ECU assembly and ECM.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Using a registered door control transmitter assembly, turn the ignition switch to ON.
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
B
Temporarily replace the ECM with a new one.
for 2ZR-FE: Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>REMOVAL
for 1ZR-FE: Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>ECM>REMOVAL
for 2NZ-FE: Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>ECM>REMOVAL
- Result:
Proceed to NEXT
NEXT
Register the ECU communication ID.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
for 2ZR-FE
Disconnect the E99 transponder key ECU assembly connector.
Disconnect the A40 ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E99-13 (EFIO) - A40-28 (IMI) Always Below 1 Ω E99-13 (EFIO) or A40-28 (IMI) - Body ground Always 10 kΩ or higher
for 2NZ-FE or 1ZR-FE
Disconnect the E99 transponder key ECU assembly connector.
Disconnect the A56 ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E99-13 (EFIO) - A56-11 (IMI) Always Below 1 Ω E99-13 (EFIO) or A56-11 (IMI) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Replace the transponder key ECU assembly with a new one.
- HINT:
-
Refer to Service Bulletin.
- NOTICE:
-
Key ID code registration is necessary when replacing the transponder key ECU assembly, refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Using a registered door control transmitter assembly, turn the ignition switch to ON.
Check that the engine starts 5 seconds after the ignition switch was turned to ON.
- OK:
Engine starts normally.
- Result:
Proceed to OK NG
OK
NG
for 2ZR-FE: Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
for 1ZR-FE: Click hereEngine / Hybrid System>1ZR-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
for 2NZ-FE: Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING