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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ENTRY FUNCTION DETECTION AREA

INSPECT FUSE (AM2)

CHECK CONNECTORS

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY)

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

CHECK FOR DTCS

READ VALUE USING INTELLIGENT TESTER

INSPECT ENGINE SWITCH

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU AND BODY GROUND - ENGINE SWITCH)

DESCRIPTION

HINT:

To allow use of intelligent tester to inspect the push-button start function when the engine switch is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between intelligent tester and the main body ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Inspect entry detection area.
   

   1. When the electrical key is in either of the 2 inspection points in the illustration, the shift lever is in the P position and the brake pedal is depressed, check that the engine switch indicator illuminates in green.
      

      OK:

      Engine switch illuminates in green.
      

      HINT:

      If the engine switch does not illuminate, perform troubleshooting according to the PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 RM000000XI606RX.html).

1. Remove the AM2 fuse from the engine room J/B.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   AM2 fuse	Always	Below 1 Ω

1. Check that the connectors are securely connected and the terminals are not deformed or loose.
   

   OK:

   The connectors are securely connected and the terminals are not deformed or loose.
   

1. Disconnect the E6 and E7 ECU connectors.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   E7-6 (AM1) - Body ground	Always	11 to 14 V
   E6-1 (AM2) - Body ground	Always	11 to 14 V

1. Disconnect the IF and IM ECU connectors.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   IF-10 (GND1) - Body ground	Always	Below 1 Ω
   IM-9 (GND2) - Body ground	Always	Below 1 Ω

1. Delete the DTCs (CAMRY_ACV40 RM000000YEH05QX.html).
   

   HINT:

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

2. Check for DTCs again.
   

   OK:

   DTC is not output.
   

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Turn the intelligent tester on.
   

4. Enter the following menus: Body / Body / Data List.
   

5. Read the Data List according to the display on the intelligent tester.
   

   HINT:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

   
   

   Body:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   St SW 1	Start Switch 1/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-
   St SW 2	Start Switch 2/ON or OFF	ON: Engine switch on (IG) OFF: Engine switch off	-

   OK:

   ON (engine switch on (IG)) and OFF (engine switch off) appear on the screen.
   

1. Remove the engine switch (CAMRY_ACV40 RM0000026WR00UX.html).
   

   
   
   
   

2. Measure the resistance of the switch.
   

   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 E7 ECU connector.
   

   
   
   
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E52-7 (SS1) - E7-17 (SSW1)	Always	Below 1 Ω
   E52-2 (SS2) - E7-16 (SSW2)	Always	Below 1 Ω
   E52-5 (GND) - Body ground	Always	Below 1 Ω
   E52-7 (SS1) or E7-17 (SSW1) - Body ground	Always	10 kΩ or higher
   E52-2 (SS2) or E7-16 (SSW2) - Body ground	Always	10 kΩ or higher