DTC CHG_f040: Communication Problem between Charger and Gateway [09/2013 - ]: Procedure

1. Connect the RAV4 EV diagnostic tool to the No. 2 DLC3.
2. Turn the power switch on (READY).
3. Turn the RAV4 EV diagnostic tool on.
4. Enter the following menus: Alert List.
5. Read the alert codes.
   RESULT
   
   

   Result	Proceed to
   CHG_f040 and CHG_f041*1 are output	A
   CHG_f040, CHG_f041*1 and electric vehicle charger internal fault alert codes*2 are output	B

   *1: CHG_f041 may not be output.

   *2: Electric vehicle charger internal fault alert codes are CHG_f002, CHG_f003, CHG_f004, CHG_f017, CHG_f054, CHG_f079, CHG_f080 and CHG_f081.

B → See step   4 

A: Go to next step 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect connector D4 from the electric vehicle charger.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect connector K28 from the EV gateway control ECU.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D4-4 (TSCH) - K28-13 (TSCH)	Power switch off	Below 1 Ω
   D4-10 (TSCL) - K28-3 (TSCL)	Power switch off	Below 1 Ω
   D4-4 (TSCH) or K28-13 (TSCH) - Body ground and other terminals	Power switch off	1 kΩ or higher
   D4-10 (TSCL) or K28-3 (TSCL) - Body ground and other terminals	Power switch off	1 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Electric Vehicle Charger Assembly)
   *b	Front view of wire harness connector (to EV Gateway Control ECU)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Connect the RAV4 EV diagnostic tool to the No. 2 DLC3.
2. Turn the power switch on (READY).
3. Turn the RAV4 EV diagnostic tool on.
4. Enter the following menus: Alert List.
5. Read the alert codes.
   RESULT
   
   

   Result	Proceed to
   CHG_f040 is output	A
   CHG_f040 and CHG_f041 are output	B

B → See step   5 

A → See step   6