THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model) Security Indicator Light Does not Blink
DESCRIPTION
The certification ECU (smart key ECU assembly) blinks the security indicator light (telltale light assembly) when the immobiliser is set (ignition switch off).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Entry&Start. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
·The smart entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
·Before replacing the certification ECU (smart key ECU assembly) or main body ECU (multiplex network body ECU), refer to Service Bulletin.
·Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.
·After completing repairs, confirm that the problem does not recur.
·After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
Check for DTCs.
- Body Electrical > Entry&Start > Trouble Codes
- 50001 440
- Powertrain > Engine > Trouble Codes
- 50001 372
- OK:
DTCs are not output.
- Result:
Proceed to OK NG
OK
NG
Perform the Active Test according to the display on the GTS.
- Body Electrical > Entry&Start > Active Test
-
Tester Display Measurement Item Control Range Diagnostic Note Immobiliser Indicator Security indicator light OFF/ON -
- Body Electrical > Entry&Start > Active Test
-
Tester Display Immobiliser Indicator - 50004 440 2
- OK:
The security indicator light (theft warning indicator light assembly) operates normally.
- Result:
Proceed to OK NG
OK
NG
When the immobiliser is set, check that the security indicator light (theft warning indicator light assembly) blinks.*1
- OK:
The security indicator light (theft warning indicator light assembly) blinks normally.
When the theft deterrent system is in the arming preparation state, check that the security indicator light (theft warning indicator light assembly) illuminates.*2
- OK:
The security indicator light (theft warning indicator light assembly) illuminates normally.
- Result:
Result Proceed to *1 is NG (*2 is OK) A *2 is NG (*1 is OK) B
A
B
Disconnect the G170 certification ECU (smart key ECU assembly) connector.
Disconnect the G31 security indicator light (telltale light assembly) connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition G170-25 (IND) - G31-3 (LP) Always Below 1 Ω G170-25 (IND) or G31-3 (LP) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
Connect the G170 certification ECU (smart key ECU assembly) connector.
Connect the G31 security indicator light (telltale light assembly) connectors.
Using an oscilloscope, check the waveform.
- Measurement Condition:
Tester Connection Condition Specified Condition G170-25 (IND) - Body ground Ignition switch off → ON Pulse generation → Below 2 V
- Result:
Proceed to OK NG
OK
NG