Entry And Start System Power Source Mode Does Not Change

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WHETHER DTC OUTPUT OCCURS

CHECK ENTRY AND START SYSTEM

INSPECT FUSE (AM2-2)

READ VALUE USING INTELLIGENT TESTER (RELAY MONITOR)

INSPECT IG1 RELAY

INSPECT IG2 RELAY

INSPECT ACC RELAY

CHECK HARNESS AND CONNECTOR (IG2 RELAY - MAIN BODY ECU)

CHECK HARNESS AND CONNECTOR (ACC RELAY - MAIN BODY ECU)

INSPECT ENGINE SWITCH

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

When one of the DTCs shown in the illustration above is detected, troubleshoot the DTC(s) by following the troubleshooting procedure relevant to the DTC(s). If the power source mode still cannot be changed normally, despite troubleshooting, one of the following may have occurred:

1. The LIN communication line is malfunctioning.
   
2. The certification ECU has determined that no key is inside the cabin.
   
3. The engine switch is malfunctioning.
   
4. The main body ECU is malfunctioning.
   

HINT:

If the vehicle is in key cancel mode, change to normal mode (RAV4_ACA30 RM000001VGI003X.html).

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and turn the intelligent tester on.
   

   HINT:

   When it is impossible to turn the engine switch on (IG), connect the intelligent tester to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

3. Enter the following menus: Body / Main Body / DTC.
   

4. Clear the DTCs.
   

   HINT:

   After all DTCs are cleared, check if the trouble occurs again 5 seconds after the engine switch is turned on (IG).

5. Check for DTCs again.
   

   OK:

   No DTC is output.
   

1. Remove the battery of the electrical key transmitter (RAV4_ACA30 RM000001VSG001X.html).
   

2. With the brake pedal (except M/T) or clutch pedal (for M/T) depressed, touch the TOYOTA mark of the key to the engine switch.
   

3. When operating the engine switch, check whether the engine switch changes to on (ACC) or on (IG).
   

   HINT:

   1. When the electrical key transmitter cannot be verified even when it is in the operational area, the engine start check can be performed by removing the transmitter battery from the electrical key transmitter and holding the transmitter against the engine switch.
      
   2. When performing the check, if the engine switch turns on (ACC) or on (IG), there is a problem with key certification inside the cabin.
      

   Result

   Result	Proceed to
   Does not change to on (ACC) or on (IG)	A
   Changes to on (ACC) and on (IG)	B

1. Remove the AM2-2 fuse from the engine room No. 1 relay block.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   AM2-2 fuse	Always	Below 1 Ω

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and turn the intelligent tester on.
   

3. Enter the following menus: Body / Main Body / Data List.
   

4. Read the display on the intelligent tester.
   
   

   Main Body

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   IG1 Relay Monitor(Inside)	IG1 inner relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
   IG2 Relay Monitor(Inside)	IG2 inner relay monitor/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
   ACC Relay Monitor	ACC relay monitor/ON or OFF	ON: Engine switch on (ACC) OFF: Engine switch off	-

   OK:

   When the engine switch is turned on (IG), IG1 Relay Monitor(Inside) is ON and IG2 Relay Monitor(Inside) is ON.
   When the engine switch is turned on (ACC), ACC Relay Monitor is ON.
   

1. Inspect the IG1 relay.
   

   1. Remove the IG1 relay from the instrument panel junction block.
      

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

      Standard Resistance:

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

1. Inspect the IG2 relay.
   

   1. Remove the IG2 relay from the engine room No. 1 relay block.
      

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

      Standard Resistance:

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

1. Inspect the ACC relay.
   

   1. Remove the ACC relay from the No. 5 relay block.
      

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

      Standard Resistance:

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

1. Remove the IG2 relay from the engine room No. 1 relay block.
   

2. Disconnect the E19 main body ECU connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   Relay block IG2 relay terminal 1 - E19-5 (IG2D)	Always	Below 1 Ω
   Relay block IG2 relay terminal 2 - Body ground	Always	Below 1 Ω
   Relay block IG2 relay terminal 1 or E19-5 (IG2D) - Body ground	Always	10 kΩ or higher

1. Remove the ACC relay from the No. 5 relay block.
   

2. Disconnect the E18 main body ECU connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   Relay block ACC relay terminal 1 - E18-4 (ACCD)	Always	Below 1 Ω
   Relay block ACC relay terminal 2 - Body ground	Always	Below 1 Ω
   Relay block ACC relay terminal 1 or E18-4 (ACCD) - Body ground	Always	10 kΩ or higher

1. Remove the engine switch (RAV4_ACA30 RM0000020P000NX.html).
   

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

   Standard Resistance:

   Tester Connection	Switch Condition	Specified Condition
   7 (SS1) - 5 (GND)	Pushed	Below 1 Ω
   2 (SS2) - 5 (GND)	Pushed	Below 1 Ω
   7 (SS1) - 5 (GND)	Not pushed	10 kΩ or higher
   2 (SS2) - 5 (GND)	Not pushed	10 kΩ or higher

1. Disconnect the E18 and E19 main body ECU connectors.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   E19-1 (AM1) - Body ground	Always	11 to 14 V
   E18-6 (AM2) - Body ground	Always	11 to 14 V

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E19-4 (GND2) - Body ground	Always	Below 1 Ω