THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, Gasoline Model) Power Source Mode does not Change to ON (IG and ACC)
DESCRIPTION
When the ignition switch cannot be turned to ACC or ON, interior verification may be abnormal or there may be a malfunction in the ACC relay or IG relay circuit. If interior verification cannot be performed, the certification ECU (smart key ECU assembly) may be malfunctioning or communication may not be possible between the No. 1 indoor electrical key antenna assembly (front floor), No. 2 indoor electrical key antenna assembly (rear floor) ), No. 1 indoor electrical key antenna assembly (inside luggage compartment) and the electrical key transmitter sub-assembly and door control receiver.
When an electrical key transmitter sub-assembly is brought into the cabin, its key ID code is compared with the key ID code stored in the certification ECU (smart key ECU assembly). If these codes do not match, key verification will fail and the ignition switch will not be able to be turned to ACC or ON.
When a door is unlocked and an electrical key transmitter sub-assembly is brought into the cabin, the certification ECU (smart key ECU assembly) activates the indoor electrical key antenna assemblies to form the interior detection area. The electrical key transmitter sub-assembly then responds to the detection signals with its key ID code. This response signal is received by the door control receiver and sent to the certification ECU (smart key ECU assembly).
| Problem Symptom | Data List and Active Test |
|---|---|
| Power source mode does not change to on (IG) or on (ACC) | Power Source Control
·
Push Start Switch 1 ·
Push Start Switch 2 ·
Push Start Switch 3 ·
IGP Relay Monitor (Outside) ·
ACC Relay Monitor ·
IGR Relay Monitor (Outside) ·
Power Supply Condition |
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.
·Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.
·If the smart entry and start system (for Start Function) has been disabled, enable the system before performing troubleshooting.
·Inspect the fuses for circuits related to this system before performing the following procedure.
·Before replacing the certification ECU (smart key ECU assembly) or an electrical key transmitter sub-assembly, refer to Service Bulletin.
·After completing repairs, confirm that the problem does not recur.
·After performing repairs, confirm that no DTCs are output by performing "DTC Output Confirmation Operation."
·The indoor electrical key antenna assemblies have an antenna coil between each terminal.
·The door control receiver is also related to interior certification.
- HINT:
- ·
If interior verification is unsuccessful, Operation History may be stored.
·If Operation History has been stored, refer to the Operation History List to determine the detection conditions and narrow down trouble areas.
- Body Electrical > Entry&Start > Utility
-
Tester Display Vehicle Control History (RoB) - 50005 440 62
PROCEDURE
Get into the vehicle while carrying the electrical key transmitter sub-assembly that has already been registered.
Move the shift lever to P.
Press the engine switch with the brake pedal released and check that the power source mode changes.
- Result:
Result Proceed to Power source mode cannot be changed when electrical key transmitter sub-assembly is in push button start function operation range for front side A Power source mode cannot be changed when electrical key transmitter sub-assembly is in push button start function operation range for rear side B Power source mode does not change when the electrical key transmitter sub-assembly is inside the push-button start function operation range only for the luggage compartment C Power source mode cannot be changed D
A
B
C
D
Install the transmitter battery to the electrical key transmitter sub-assembly.
Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (front floor) and perform a smart entry and start system check.
- NOTICE:
-
Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the No. 1 indoor electrical key antenna assembly (front floor).
- HINT:
- ·
As the effect of wave interference decreases by moving the electrical key transmitter sub-assembly close to each indoor electrical key antenna assembly, it may be possible to check whether wave interference is the cause of the problem.
·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:
The engine starts when the electrical key transmitter sub-assembly is held near each indoor electrical key antenna assembly and the engine switch is pressed with the brake pedal depressed.
- Result:
Proceed to OK NG
OK
NG
Check the following antennas in key diagnostic mode.
| *a | Inspection Point |
The illustrations shown are examples only.
Check the No. 1 indoor electrical key antenna assembly (front floor).
When the electrical key transmitter sub-assembly is at either inspection point, check that the buzzer sounds.
- HINT:
- ·
Select either channel 1 or channel 2 and perform the 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.
·It is possible to check which No. 1 indoor electrical key antenna assembly or No. 2 indoor electrical key antenna assembly (front floor, rear floor or inside luggage compartment) is operating by the sounding of the buzzer.
·When the buzzer sounds for all indoor electrical key antenna assemblies, they can be judged as operating properly and a malfunction in the certification ECU (smart key ECU assembly), which performs verification, is suspected.
·When the buzzer does not sound for all indoor electrical key antenna assemblies, it can be judged that the certification ECU (smart key ECU assembly), which controls the indoor electrical key antenna assemblies, is malfunctioning.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 440 2541
- Result:
Result Proceed to The buzzer does not sound A The buzzer sounds B
A
B
Disconnect the G170 certification ECU (smart key ECU assembly) connector.
Disconnect the G172 No. 1 indoor electrical key antenna assembly (front floor) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition G170-4 (CLG5) - G172-1 (ANTE5) Always Below 1 Ω G170-5 (CG5B) - G172-2 (CLGB) Always Below 1 Ω G170-4 (CLG5) or G172-1 (ANTE5) - Other terminals and body ground Always 10 kΩ or higher G170-5 (CG5B) or G172-2 (CLGB) - Other terminals and body ground Always 10 kΩ or higher
Reconnect the G170 certification ECU (smart key ECU assembly) connector.
- Result:
Proceed to OK NG
OK
NG
Using an oscilloscope, check the waveform.
| *a | Front view of wire harness connector
(to No. 1 Indoor Electrical Key Antenna Assembly (Front Floor)) |
*b | Waveform |
| *c | For 30 seconds after closing any door | *d | After 30 seconds or more have elapsed since any door closed |
- OK:
Tester Connection Condition Tool Setting Specified Condition G172-1 (ANTE5) - G172-2 (CLGB) Procedure:
1.Ignition switch off
2.Electrical key transmitter sub-assembly not inside vehicle
3.Within 30 seconds of closing any door
5 V/DIV., 500 ms./DIV. Pulse generation
(See waveform)
- Result:
Proceed to OK NG
OK
NG
Install the transmitter battery to the electrical key transmitter sub-assembly.
Bring the electrical key transmitter sub-assembly near the No. 2 indoor electrical key antenna assembly (rear floor) and perform a smart entry and start system check.
- NOTICE:
-
Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the center of the No. 2 indoor electrical key antenna assembly (rear floor).
- HINT:
- ·
Check that the customize setting "Ignition Available Area" is set to "All".
·As the effect of wave interference decreases by moving the electrical key transmitter sub-assembly close to each indoor electrical key antenna assembly, it may be possible to check whether wave interference is the cause of the problem.
·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:
The engine starts when the electrical key transmitter sub-assembly is held near each indoor electrical key antenna assembly and the engine switch is pressed with the brake pedal depressed.
- Result:
Proceed to OK NG
OK
NG
Check the following antennas in key diagnostic mode.
| *a | Inspection Point |
The illustrations shown are examples only.
Check the No. 2 indoor electrical key antenna assembly (rear floor).
When the electrical key transmitter sub-assembly is at either inspection point, check that the buzzer sounds.
- HINT:
- ·
Select either channel 1 or channel 2 and perform the 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.
·It is possible to check which No. 1 indoor electrical key antenna assembly or No. 2 indoor electrical key antenna assembly (front floor, rear floor or inside luggage compartment) is operating by the sounding of the buzzer.
·When the buzzer sounds for all indoor electrical key antenna assemblies, they can be judged as operating properly and a malfunction in the certification ECU (smart key ECU assembly), which performs verification, is suspected.
·When the buzzer does not sound for all indoor electrical key antenna assemblies, it can be judged that the certification ECU (smart key ECU assembly), which controls the indoor electrical key antenna assemblies, is malfunctioning.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 440 2541
- Result:
Result Proceed to The buzzer does not sound A The buzzer sounds B
A
B
Disconnect the M59 certification ECU (smart key ECU assembly) connector.
Disconnect the N67 No. 2 indoor electrical key antenna assembly (rear floor) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition M59-1 (CLG6) - N67-1 (ANTE6) Always Below 1 Ω M59-2 (CG6B) - N67-2 (CLGB) Always Below 1 Ω M59-1 (CLG6) or N67-1 (ANTE6) - Other terminals and body ground Always 10 kΩ or higher M59-2 (CG6B) or N67-2 (CLGB) - Other terminals and body ground Always 10 kΩ or higher
Reconnect the M59 certification ECU (smart key ECU assembly) connector.
- Result:
Proceed to OK NG
OK
NG
Using an oscilloscope, check the waveform.
| *a | Front view of wire harness connector
(to No. 2 Indoor Electrical Key Antenna Assembly (Rear Floor)) |
*b | Waveform |
| *c | For 30 seconds after closing any door | *d | After 30 seconds or more have elapsed since any door closed |
- OK:
Tester Connection Condition Tool Setting Specified Condition N67-1 (ANTE6) - N67-2 (CLGB) Procedure:
1.Ignition switch off
2.Electrical key transmitter sub-assembly not inside vehicle
3.Within 30 seconds of closing any door
5 V/DIV., 500 ms./DIV. Pulse generation
(See waveform)
- Result:
Proceed to OK NG
OK
NG
Install the transmitter battery to the electrical key transmitter sub-assembly.
Bring the electrical key transmitter sub-assembly near the No. 1 indoor electrical key antenna assembly (inside luggage compartment) and perform an smart entry and start system check.
- HINT:
-
Check that the customize setting "Ignition Available Area" is set to "All".
- NOTICE:
-
Communication may not be possible if the electrical key transmitter sub-assembly is within 0.2 m (0.656 ft.) of the center of the No. 1 indoor electrical key antenna assembly (inside luggage compartment).
- HINT:
- ·
As the effect of wave interference decreases by moving the electrical key transmitter sub-assembly close to each indoor electrical key antenna assembly, it may be possible to check whether wave interference is the cause of the problem.
·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.
- OK:
The engine starts when the electrical key transmitter sub-assembly is held near each indoor electrical key antenna assembly and the engine switch is pressed with the brake pedal depressed.
- Result:
Proceed to OK NG
OK
NG
Check the following antennas in key diagnostic mode.
| *a | Inspection Point |
The illustrations shown are examples only.
Check the No. 1 indoor electrical key antenna assembly (inside luggage compartment).
When the electrical key transmitter sub-assembly is at either inspection point, check that the buzzer sounds.
- HINT:
- ·
Select either channel 1 or channel 2 and perform the 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.
·It is possible to check which No. 1 indoor electrical key antenna assembly or No. 2 indoor electrical key antenna assembly (front floor, rear floor or inside luggage compartment) is operating by the sounding of the buzzer.
·When the buzzer sounds for all indoor electrical key antenna assemblies, they can be judged as operating properly and a malfunction in the certification ECU (smart key ECU assembly), which performs verification, is suspected.
·When the buzzer does not sound for all indoor electrical key antenna assemblies, it can be judged that the certification ECU (smart key ECU assembly), which controls the indoor electrical key antenna assemblies, is malfunctioning.
- Body Electrical > Entry&Start > Utility
-
Tester Display Communication Check(Key Diag Mode) - 50005 440 2541
- Result:
Result Proceed to The buzzer does not sound A The buzzer sounds B
A
B
Disconnect the M59 certification ECU (smart key ECU assembly) connector.
Disconnect the M61 No. 1 indoor electrical key antenna assembly (inside luggage compartment) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition M59-10 (CLG7) - M61-1 (ANTE7) Always Below 1 Ω M59-9 (CG7B) - M61-2 (CLGB) Always Below 1 Ω M59-10 (CLG7) or M61-1 (ANTE7) - Other terminals and body ground Always 10 kΩ or higher M59-9 (CG7B) or M61-2 (CLGB) - Other terminals and body ground Always 10 kΩ or higher
Reconnect the M59 certification ECU (smart key ECU assembly) connector.
- Result:
Proceed to OK NG
OK
NG
Using an oscilloscope, check the waveform.
| *a | Front view of wire harness connector
(to No. 1 Indoor Electrical Key Antenna Assembly (Inside Luggage Compartment)) |
*b | Waveform |
| *c | For 30 seconds after closing any door | *d | After 30 seconds or more have elapsed since any door closed |
- OK:
Tester Connection Condition Tool Setting Specified Condition M61-1 (ANTE7) - M61-2 (CLGB) Procedure:
1.Ignition switch off
2.Electrical key transmitter sub-assembly not inside vehicle
3.Within 30 seconds of closing any door
5 V/DIV., 500 ms./DIV. Pulse generation
(See waveform)
- 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 electrical key transmitter sub-assembly for 5 seconds and check the number of times that the 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. "Yes" is displayed for the Data List item Key Low Battery 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 and pressing the engine switch.
- Result:
Result Proceed to LED illuminates 3 times or more when switch is pressed and held A LED does not illuminate when switch is pressed and held B LED illuminates once or twice but not a third time C
A
B
C
Check that the entry lock and unlock functions operate on each door.
- HINT:
-
If the door control receiver is defective, code verification does not begin in the cabin and the entry lock and unlock functions do not operate.
- Result:
Result Proceed to Entry functions operate normally for all doors A An entry function does not operate normally for a door B
A
B
Read the Data List according to the display on the GTS.
- Body Electrical > Power Source Control > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Push Start Switch 1 Engine switch 1 status OFF or ON OFF: Engine switch not pressed
ON: Engine switch pressed·If the engine switch is pressed for a short time, the display may not change.
·Use this item to determine if the engine switch input signal is malfunctioning.
Push Start Switch 2 Engine switch 2 status OFF or ON OFF: Engine switch not pressed
ON: Engine switch pressed·If the engine switch is pressed for a short time, the display may not change.
·Use this item to determine if the engine switch input signal is malfunctioning.
Push Start Switch 3 Engine switch 3 status OFF or ON OFF: Engine switch not pressed
ON: Engine switch pressed·If the engine switch is pressed for a short time, the display may not change.
·Use this item to determine if the engine switch input signal is malfunctioning.
- Body Electrical > Power Source Control > Data List
-
Tester Display Push Start Switch 1 Push Start Switch 2 Push Start Switch 3 - 50003 454 201,202,203
- OK:
The value of "Push Start Switch1", "Push Start Switch2" and "Push Start Switch3" change correctly in response to the engine switch operation.
- Result:
Proceed to OK NG
OK
NG
Measure the voltage while checking the Data List on the GTS.
Read the Data List according to the display on the GTS.
| *a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
- | - |
- Body Electrical > Power Source Control > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note Power Supply Condition Power supply state OFF, ACC ON, IGR ON, IGP ON or Starter ON OFF: Ignition switch off
ACC ON: Ignition switch ACC
IGR ON: Ignition switch ON
IGP ON: Ignition switch ON
Starter ON: Sending engine start request signal-
- Body Electrical > Power Source Control > Data List
-
Tester Display Power Supply Condition - 50003 454 405
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition A126-11 (IGRD) - Body ground Ignition switch off Below 1 V Ignition switch ACC Below 1 V Ignition switch ON 9 V or higher A126-24 (IGPD) - Body ground Ignition switch off Below 1 V Ignition switch ACC Below 1 V Ignition switch ON 9 V or higher G170-21 (ACCD) - Body ground Ignition switch off Below 1 V Ignition switch ACC 8.5 V or higher Ignition switch ON 8.5 V or higher
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to Power Distribution Box Assembly) |
Disconnect the power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 6B-36 - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
for M20C-FKS:
for M20D-FKS:
- Result:
Proceed to OK NG
OK
NG
for M20C-FKS:
for M20D-FKS:
Disconnect the G170 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 G170-19 (SSW1) - G171-12 (SS1) Always Below 1 Ω G170-27 (SSW2) - G171-6 (SS2) Always Below 1 Ω G170-23 (SSW3) - G171-11 (SS3) Always Below 1 Ω G170-30 (AGND) - G171-3 (GND) Always Below 1 Ω G170-19 (SSW1) or G171-12 (SS1) - Other terminals and body ground Always 10 kΩ or higher G170-27 (SSW2) or G171-6 (SS2) - Other terminals and body ground Always 10 kΩ or higher G170-23 (SSW3) or G171-11 (SS3) - Other terminals and body ground Always 10 kΩ or higher G170-30 (AGND) or G171-3 (GND) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
- NOTICE:
-
Do not wrap the lead wire ground 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.
- Result:
Proceed to OK NG
OK
NG