Entry And Start System (For Start Function) Power Source Mode Does Not Change To On (Ig)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - COWL SIDE JUNCTION BLOCK LH)

CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - INTEGRATION RELAY (IG2 MAIN RELAY))

CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - IG1 RELAY)

INSPECT INTEGRATION RELAY (IG2-MAIN RELAY)

INSPECT IG1 RELAY

INSPECT COWL SIDE JUNCTION BLOCK LH (IG1 NO. 1, IG1 NO. 2, IG1 NO. 3 RELAY)

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

DESCRIPTION

HINT:

When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. 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 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.
   
2. The entry and start system (for Start Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (Click here). Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
   
3. Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart (Click here).
   
4. If the entry and start system is disabled through the customize function, enable the system before performing troubleshooting (Click here).
   
5. Before replacing the certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) or main body ECU (multiplex network body ECU), refer to the entry and start system (for Start Function) precaution (Click here).
   
6. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
   
7. After completing repairs, confirm that the problem does not occur.
   

1. Using the GTS, check for DTCs.
   

   Result

   Result	Proceed to
   DTCs are not output	A
   Entry and start system (for Start Function) DTCs are output	B

1. Disconnect the E128 connector from the certification ECU (smart key ECU assembly).
   

2. Disconnect the 2I and 2J connectors from the connector from the cowl side junction block LH.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E128-3 (IG1D) - 2I-18	Always	Below 1 Ω
   2J-1 - Body ground
   E128-3 (IG1D) and 2I-18 - Body ground		10 kΩ or higher

1. Disconnect the 2H connector from the cowl side junction block LH.
   

2. Disconnect the 1R and 1S connectors from the integration relay.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   2H-18 - 1R-2	Always	Below 1 Ω
   1S-4 - Body ground
   2H-18 and 1R-2 - Body ground		10 kΩ or higher

1. Disconnect the 2H connector from the cowl side junction block LH.
   

2. Remove the IG1 relay.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   2H-17 - 1 (IG1 relay)	Always	Below 1 Ω
   2 (IG1 relay) - Body ground
   2H-17 and 1 (IG1 relay) - Body ground		10 kΩ or higher

1. Remove the integration relay.
   

2. Measure the resistance according to the value(s) in the table below.
   

   
   
   
   
   

   Text in Illustration

   *A	for RHD	*B	for LHD
   *1	Integration Relay (IG2 MAIN Relay)	-	-

   
   

   Standard Resistance:

   
   

   for RHD:

   Tester Connection	Condition	Specified Condition
   1X-1 - 1P-7	Battery voltage not applied to terminals 1R-2 and 1S-4	10 kΩ or higher
   	Battery voltage applied to terminals 1R-2 and 1S-4	Below 1 Ω

   
   

   for LHD:

   Tester Connection	Condition	Specified Condition
   1Y-1 - 1P-7	Battery voltage not applied to terminals 1R-2 and 1S-4	10 kΩ or higher
   	Battery voltage applied to terminals 1R-2 and 1S-4	Below 1 Ω

1. Remove the IG1 relay.
   

2. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	Battery voltage not applied to terminals 2 and 1	10 kΩ or higher
   	Battery voltage applied to terminals 2 and 1	Below 1 Ω

   Text in Illustration

   *1

   IG1 Relay

1. Remove the cowl side junction block LH.
   

   1. for LHD: Click here.
      
   2. for RHD: Click here.
      

2. Measure the resistance according to the value(s) in the table below.
   

   
   
   
   
   

   Text in Illustration

   *a

   Component without harness connected (Cowl Side Junction Block LH)

   -

   -

   
   

   Standard Resistance:

   
   

   Tester Connection	Condition	Specified Condition
   2G-1 - 2I-19	Battery voltage not applied to terminals 2I-18 and 2J-1	10 kΩ or higher
   	Battery voltage applied to terminals 2I-18 and 2J-1	Below 1 Ω
   2G-1 - 2I-33	Battery voltage not applied to terminals 2I-18 and 2J-1	10 kΩ or higher
   	Battery voltage applied to terminals 2I-18 and 2J-1	Below 1 Ω
   2G-1 - 2I-11	Battery voltage not applied to terminals 2I-18 and 2J-1	10 kΩ or higher
   	Battery voltage applied to terminals 2I-18 and 2J-1	Below 1 Ω

1. Measure the voltage according to the value(s) in the table below.
   

Standard Voltage:

Tester Connection	Condition	Specified Condition
E128-3 (IG1D) - Body ground	Engine switch on (ACC) → Engine switch on (IG)	1 V or less → 9 V or higher