THEFT DETERRENT / KEYLESS ENTRY ENTRY AND START SYSTEM(for Start Function) Security Indicator Light Does not Blink
DESCRIPTION
The certification ECU (smart key ECU assembly) blinks the security indicator light (combination meter assembly) when the immobiliser is set (engine switch off).
The certification ECU (smart key ECU assembly) receives the security indicator light signal from the main body ECU (multiplex network body ECU) via CAN communication when the theft deterrent system is in the arming preparation state or alarm sounding state. Then, the certification ECU (smart key ECU assembly) blinks the security indicator light (radio receiver assembly).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When using the GTS with the engine 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 Model Code "KEY REGIST" 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 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 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 the 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".
·When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
PROCEDURE
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical or Powertrain / Entry&Start, Engine / Trouble Codes.
Check for DTCs.
- Body Electrical > Entry&Start > Trouble Codes
- 50001 125
- Powertrain > Engine > Trouble Codes
- 50001 372
- OK:
DTCs are not output.
- Result:
Proceed to OK NG
OK
NG
Enter the following menus: Body Electrical / Entry&Start / Active Test.
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 125 28
- OK:
The security indicator light (combination meter assembly) operates normally.
- Result:
Proceed to OK NG
OK
NG
When the immobiliser is set, check that the security indicator light (combination meter assembly) blinks.*1
- OK:
The security indicator light (combination meter assembly) blinks normally.
When the theft deterrent system is in the arming preparation state, check that the security indicator light (combination meter assembly) illuminates.*2
- OK:
The security indicator light (combination meter assembly) illuminates normally.
- Result:
Result Proceed to *1 is NG (*2 is OK) A *2 is NG (*1 is OK) B
A
B
for LHD:
for RHD:
Disconnect the N156 certification ECU (smart key ECU assembly) connector.
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition N156-20 (IND) - N23-7 (LP) Always Below 1 Ω N156-20 (IND) or N23-7 (LP) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Reconnect the certification ECU (smart key ECU assembly) connector.
Reconnect the N23 combination meter assembly connector.
Using an oscilloscope, check the waveform.
| *a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
- | - |
- Measurement Condition:
Tester Connection Switch Condition Specified Condition N156-20 (IND) - Body ground Engine switch off → on (IG) Pulse generation → Below 2 V
- Result:
Proceed to OK NG
OK
NG