THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Entry Function) All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate
DESCRIPTION
When the entry operation and wireless operation of the door lock functions do not operate, a malfunction or wave interference may be occurring in either of the following: 1) the signal communication line between the door control with receiver ECU assembly and certification ECU (smart key ECU assembly) (the line used for entry and wireless operations); or 2) the electrical key transmitter sub-assembly. If the entry lock and wireless lock operations cannot be performed, there may be electrical key transmitter sub-assembly malfunctions, wave interference or problems in the communication which is used for the entry and wireless function between the door control with receiver ECU assembly and certification ECU (smart key ECU assembly).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
The smart entry and start system (for Entry 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 Entry Function) after confirming that the communication systems are functioning properly.
·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(CAN). 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.
·Check that there are no electrical key transmitter sub-assemblies in the vehicle.
·Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output.
·Inspect the fuses for circuits related to this system before performing the following procedure.
·Before replacing the certification ECU (smart key ECU assembly), refer to smart entry and start system (for Entry Function) Precaution.
·After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
·The door control with receiver ECU assembly has a constant voltage (5 V) supply circuit connected to terminal "+5".
PROCEDURE
Measure the voltage of the vehicle battery.
- Standard Voltage:
11 to 14 V
- HINT:
-
It may be possible to tell whether the vehicle battery is discharged by operating the horn.
-
If the voltage is below 11 V, recharge or replace the vehicle battery before proceeding to the next step.
- Result:
Proceed to NEXT
NEXT
Open the driver door using the mechanical key built into the electrical key transmitter sub-assembly.
Check for DTCs.
- Body Electrical > Entry&Start > Trouble Codes
- 50001 125
- OK:
DTCs are not output.
- Result:
Proceed to OK NG
OK
NG
When the door control switch on the power window regulator switch assembly is operated, check that the doors unlock and lock according to the switch operation.
Click hereVehicle Interior>DOOR LOCK>POWER DOOR LOCK CONTROL SYSTEM>OPERATION CHECK
- OK:
Door locks operate normally.
- Result:
Proceed to OK NG
OK
NG
Click hereVehicle Interior>DOOR LOCK>POWER DOOR LOCK CONTROL SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
Check the following antennas in key diagnostic mode.
- HINT:
- ·
Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.
·If the buzzer sounds with [CH1] displayed but not with [CH2], the electrical key transmitter sub-assembly cannot be detected by channel 2 due to a malfunction, such as wave interference.
Select either channel 1 or channel 2 and perform key diagnostic mode inspection for each channel.
| *a | 0.7 to 1 m (2.30 to 3.28 ft.) |
Check the electrical key antenna (for driver door):
When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the front door outside handle assembly (for driver door), check that the wireless door lock buzzer sounds.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 125 143
| *a | Inspection Point |
Check the No. 1 indoor electrical key antenna (front floor):
When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless door lock buzzer sounds.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 125 143
| *a | Inspection Point |
Check the No. 2 indoor electrical key antenna (rear floor):
When the electrical key transmitter sub-assembly is at either inspection point, check that the wireless door lock buzzer sounds.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 125 143
| *a | 0.7 to 1 m (2.30 to 3.28 ft.) |
Check the electrical key antenna (outside luggage compartment):
When the electrical key transmitter sub-assembly is brought within 0.7 to 1 m (2.30 to 3.28 ft.) of the electrical key antenna (outside luggage compartment), check that the wireless door lock buzzer sounds.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 125 143
- OK:
Wireless door lock buzzer sounds.
- Result:
Result Proceed to Diagnostic mode inspections fail for both channels A Diagnostic mode inspections succeed for both channels B Diagnostic mode inspection succeeds for only one of the channels C
A
B
C
Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.
- Result:
Result Proceed to Another registered electrical key transmitter sub-assembly is not available A Another registered electrical key transmitter sub-assembly is available B
A
B
Register a new electrical key transmitter sub-assembly.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Using another registered electrical key transmitter sub-assembly, check if an entry lock/unlock operation can be performed twice in succession.
- OK:
Entry lock/unlock operate normally.
- Result:
Proceed to OK NG
OK
NG
Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.
Press and hold the lock switch of the transmitter for 5 seconds and check the number of times that the electrical key transmitter sub-assembly LED illuminates.
- HINT:
- ·
The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. The certification ECU (smart key ECU assembly) displays "Yes" for the "Key Low Battery" item of the Data List when this voltage information indicates 2.2 V or less.
·Even if the transmitter battery is depleted, it is still possible to start the engine by holding the electrical key transmitter sub-assembly near the engine switch, depressing the brake pedal*1 or clutch pedal*2 and pressing the engine switch.
*1: except Manual Transaxle
*2: for Manual Transaxle
- Result:
Result Proceed to Electrical key transmitter sub-assembly LED does not illuminate when switch is pressed and held A Electrical key transmitter sub-assembly LED illuminates 3 times or more when switch is pressed and held B Electrical key transmitter sub-assembly LED illuminates once or twice but not a third time C
A
B
C
Click hereVehicle Interior>DOOR LOCK>TRANSMITTER BATTERY(w/ Smart Entry and Start System)>REPLACEMENT
Inspect the transmitter battery.
Remove the transmitter battery from the electrical key transmitter sub-assembly that does not operate.
Click hereVehicle Interior>DOOR LOCK>TRANSMITTER BATTERY(w/ Smart Entry and Start System)>REPLACEMENT
| *a | Lead Wire |
Attach a lead wire (0.60 mm (0.0236 in.) in diameter or less including wire sheath) with tape or equivalent to the negative terminal.
- NOTICE:
-
Do not wrap the lead wire around a terminal, wedge it between terminals, or solder it. The terminal may be deformed or damaged, and the transmitter battery will not be able to be installed correctly.
Carefully pull the lead wire out from the position shown in the illustration and install the previously removed transmitter battery.
| *a | GND |
Measure the voltage of the transmitter battery.
- HINT:
- ·
When measuring the transmitter battery voltage, bring the electrical key transmitter sub-assembly within the lock entry operating range while operating the lock sensor of a door handle to perform the measurement.
·Perform the measurement when the key is at room temperature.
·The key sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. When this voltage is 2.2 V or less the Data List item "Key Low Battery" displays "Yes".
- Standard Voltage:
Tester Connection Condition Specified Condition Transmitter battery positive (+) - Transmitter battery negative (-) Engine switch off, all doors closed and lock sensor touched 2.3 to 3.2 V
- Result:
Proceed to OK NG
OK
NG
Click hereVehicle Interior>DOOR LOCK>TRANSMITTER BATTERY(w/ Smart Entry and Start System)>REPLACEMENT
Bring the electrical key transmitter sub-assembly that was checked first near the door control with receiver ECU assembly and select the failed channel (the channel in which the buzzer did not sound) to recheck the key diagnostic mode.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 125 1508
- HINT:
- ·
When the electrical key transmitter sub-assembly is brought near the door control with receiver ECU assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
·If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
·There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
·If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
- OK:
Wireless door lock buzzer sounds.
- Result:
Proceed to OK NG
OK
NG
Bring the electrical key transmitter sub-assembly near the door control with receiver ECU assembly and perform a wireless and entry function operation check.
- HINT:
- ·
When the electrical key transmitter sub-assembly is brought near the door control with receiver ECU assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
·If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
·There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
·If a tool for checking radio waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
- OK:
Wireless and entry functions operate normally.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Main Body / Data List.
Read the Data List according to the display on the GTS.
- Body Electrical > Main Body > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note ACC SW Engine switch status OFF or ON OFF: Engine switch off
ON: Engine switch on (ACC)"ON" is displayed even though the engine switch is on (IG). IG SW Engine switch status OFF or ON OFF: Engine switch off
ON: Engine switch on (IG)"OFF" is displayed even though the engine switch is on (ACC).
- Body Electrical > Main Body > Data List
-
Tester Display ACC SW IG SW - 50003 123 31,30
- OK:
The GTS display changes correctly in response to the engine switch operation.
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Certification ECU (Smart Key ECU Assembly)) |
Disconnect the E108 certification ECU (smart key ECU assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E108-11 (E) - Body ground Always Below 1 Ω
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition E108-10 (CUTB) - Body ground Always 11 to 14 V E108-2 (+B) - Body ground Always 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
Disconnect the E109 certification ECU (smart key ECU assembly) connector.
Disconnect the L70 door control with receiver ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E109-5 (RCO) - L70-4 (+5) Always Below 1 Ω E109-17 (RDAM) - L70-5 (DATA) Always Below 1 Ω E109-6 (CSEL) - L70-2 (CSEL) Always Below 1 Ω E109-5 (RCO) or L70-4 (+5) - Body ground Always 10 kΩ or higher E109-17 (RDAM) or L70-5 (DATA) - Body ground Always 10 kΩ or higher E109-6 (CSEL) or L70-2 (CSEL) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *a | Component with harness connected
(Door Control with Receiver ECU Assembly) |
Connect the L70 door control with receiver ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition L70-1 (GND) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Connect the E108 and E109 certification ECU (smart key ECU assembly) connectors.
| *a | Component with harness connected
(Door Control with Receiver ECU Assembly) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition L70-4 (+5) - L70-1 (GND) Procedure:
1.Engine switch off
2.Electrical key transmitter sub-assembly switch not pressed
Below 1 V Procedure:
1.Engine switch off
2.Electrical key transmitter sub-assembly switch pressed
4.5 to 5.5 V L70-2 (CSEL) - L70-1 (GND) Engine switch off and all doors closed Below 1 V → pulse generation
- Result:
Proceed to OK NG
OK
NG
Using an oscilloscope, check the waveform.
| *a | Component with harness connected
(Door Control with Receiver ECU Assembly) |
*b | Waveform |
| *c | Before lock or unlock button of electrical key transmitter sub-assembly pressed | *d | After lock or unlock button of electrical key transmitter sub-assembly pressed |
- OK:
Tester Connection Condition Tool Setting Specified Condition L70-5 (DATA) - L70-1 (GND) Procedure:
1.Engine switch off
2.All doors locked
3.Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2
4.Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed
5 V/DIV., 500 ms/DIV. Pulse generation
(See waveform)
*1: For details about the areas that are outside the entry function detection area, refer to Operation Check.
*2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.
- Result:
Proceed to OK NG
OK
NG
Temporarily replace the certification ECU (smart key ECU assembly) with a new one.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Check that the wireless door lock functions operate normally.
- OK:
Wireless door lock function operates normally.
- Result:
Proceed to OK NG
OK
NG
Check if there is another electrical key transmitter sub-assembly available that is already registered to the vehicle.
- Result:
Result Proceed to Another registered electrical key transmitter sub-assembly is not available A Another registered electrical key transmitter sub-assembly is available B
A
B
Register a new electrical key transmitter sub-assembly.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Bring another registered electrical key transmitter sub-assembly near the door control with receiver ECU assembly and select the failed channel (the channel in which the buzzer did not sound) to recheck key diagnostic mode.
- HINT:
- ·
When the electrical key transmitter sub-assembly is brought near the door control with receiver ECU assembly, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
·If the inspection result is that the problem only occurs in certain locations or at certain times of day, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
·There may be wave interference if the vehicle is near broadcasting antennas, large video displays, wireless garage door opener systems, wireless security cameras, home security systems, etc. In this case, move the vehicle to a different location and check if there is any improvement.
·If a tool for checking electric waves, such as a signal strength meter, is available, move around the area while observing both the LF band (used by the vehicle antenna to form the detection area) and RF band (used by the electrical key transmitter sub-assembly for transmission) to check for locations where there is wave interference.
- OK:
Wireless door lock buzzer sounds.
- Result:
Proceed to OK NG
OK
NG
Disconnect the E109 certification ECU (smart key ECU assembly) connector.
Disconnect the L70 door control with receiver ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E109-6 (CSEL) - L70-2 (CSEL) Always Below 1 Ω E109-6 (CSEL) or L70-2 (CSEL) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Connect the E109 certification ECU (smart key ECU assembly) connector.
Connect the L70 door control with receiver ECU assembly connector.
| *a | Component with harness connected
(Door Control with Receiver ECU Assembly) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition L70-2 (CSEL) - L70-1 (GND) Engine switch off and all doors closed Below 1 V → pulse generation
- Result:
Proceed to OK NG
OK
NG
Using an oscilloscope, check the waveform.
- HINT:
-
Inspection should be performed while the electrical key antenna check in key diagnostic mode is being performed on the failed channel (the channel in which the buzzer did not sound).
| *a | Component with harness connected
(Door Control with Receiver ECU Assembly) |
*b | Waveform |
| *c | Before lock or unlock button of electrical key transmitter sub-assembly pressed | *d | After lock or unlock button of electrical key transmitter sub-assembly pressed |
- OK:
Tester Connection Condition Tool Setting Specified Condition L70-5 (DATA) - L70-1 (GND) Procedure:
1.Engine switch off
2.All doors locked
3.Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2
4.Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed
5 V/DIV., 500 ms/DIV. Pulse generation
(See waveform)
*1: For details about the areas that are outside the entry function detection area, refer to Operation Check.
*2: For details about the areas that are inside the wireless function operational area, refer to Operation Check.
- Result:
Proceed to OK NG
OK
NG
Temporarily replace the certification ECU (smart key ECU assembly) with a new one.
- HINT:
-
Refer to Service Bulletin.
- Result:
Proceed to NEXT
NEXT
Check that the wireless door lock function operates normally.
- OK:
Wireless door lock function operates normally.
- Result:
Proceed to OK NG
OK
NG