THEFT DETERRENT / KEYLESS ENTRY SMART ENTRY AND START SYSTEM(for Start Function, HV Model) Power Source Mode does not Change to ON (IG)
DESCRIPTION
If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.
| Problem Symptom | Data List and Active Test |
|---|---|
| Power source mode does not change to ON but does change to ACC | Power Source Control
·
Power Supply Condition ·
IGP Relay Circuit (Outside) Monitor ·
IGP Relay Circuit (Inside) Monitor ·
IGR Relay Circuit (Outside) Monitor ·
IGR Relay Circuit (Inside) Monitor |
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 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.
·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), 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."
- 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
Using the GTS, check for certification ECU (smart key ECU assembly) DTCs.
- Body Electrical > Power Source Control > Trouble Codes
- 50001 223
- Body Electrical > Entry&Start > Trouble Codes
- 50001 125
- Result:
Result Proceed to DTCs are not output A Smart entry and start system (for Start Function) DTCs are output B
A
B
Disconnect the I197 certification ECU (smart key ECU assembly) connector.
Disconnect the 10E and 10F power distribution box assembly connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 10F-16 - I197-24 (IGPD) Always Below 1 Ω 10F-17 - I197-11 (IGRD) Always Below 1 Ω 10E-8 - Body ground Always Below 1 Ω 10F-16 or I197-24 (IGPD) - Other terminals and body ground Always 10 kΩ or higher 10F-17 or I197-11 (IGRD) - 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 I197 certification ECU (smart key ECU assembly) connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition I197-11 (IGRD) - Body ground Ignition switch ACC → Ignition switch ON 1 V or less → 9 V or higher I197-24 (IGPD) - Body ground Ignition switch ACC → Ignition switch ON 1 V or less → 9 V or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the I197 certification ECU (smart key ECU assembly) connector.
Disconnect the 10E, 10F, 10G and 10B power distribution box assembly connectors.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition 10B-1 - Body ground Ignition switch off 11 to 14 V
- Result:
Proceed to OK NG
OK
NG
Remove the power distribution box assembly.
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
| *a | Component without harness connected
(Power Distribution Box Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 10F-16 - 10A-11 Always Below 1 Ω
Connect the auxiliary battery terminal (+) to the 10F-17 terminal.
Connect the auxiliary battery terminal (-) to the 10E-8 terminal.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 10B-1 - 10G-33 Auxiliary battery voltage applied between terminals 10F-17 and 10E-8 Below 1 Ω 10B-1 - 10F-34 Auxiliary battery voltage applied between terminals 10F-17 and 10E-8 Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Remove the IGP-MAIN relay from the No. 1 engine room relay block and No. 1 junction block assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 10A-11 - IGP-MAIN relay terminal 2 Always Below 1 Ω IGP-MAIN relay terminal 1 - Body ground Always Below 1 Ω 10A-11 or IGP-MAIN relay terminal 2 - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *1 | IGP-MAIN Relay |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 3 - 5 Auxiliary battery voltage applied between terminals 1 and 2 Below 1 Ω Auxiliary battery voltage not applied between terminals 1 and 2 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG