HYBRID CONTROL SYSTEM PROBLEM SYMPTOMS TABLE

Table 1. Hybrid Control System
Symptom	Suspected Area	Link
Cannot enter EV drive mode	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	EV drive mode switch (Combination switch assembly)	Click here
	Pattern select switch EV mode circuit	Click here
	Combination meter assembly	Click here
EV mode indicator light does not illuminate	Combination meter assembly	Click here
	EV drive mode switch (Combination switch assembly)	Click here
	Pattern select switch EV mode circuit	Click here
EV mode indicator light does not turn off	Combination meter assembly	Click here
	EV drive mode switch (Combination switch assembly)	Click here
	Pattern select switch EV mode circuit	Click here
Cannot enter ECO mode	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	ECO mode switch (Combination switch assembly)	Click here
	Pattern select switch ECO mode circuit	Click here
	Combination meter assembly	Click here
ECO mode indicator light does not illuminate	ECO mode switch (Combination switch assembly)	Click here
	Pattern select switch ECO mode circuit	Click here
	Combination meter assembly	Click here
ECO mode indicator light does not turn off	ECO mode switch (Combination switch assembly)	Click here
	Pattern select switch ECO mode circuit	Click here
	Combination meter assembly	Click here
Cannot enter SPORT mode	CAN communication system (for LHD)	Click here
	CAN communication system (for RHD)	Click here
	SPORT mode switch (Combination switch assembly)	Click here
	Pattern select switch sport mode circuit	Click here
	Combination meter assembly	Click here
SPORT mode indicator light does not illuminate	SPORT mode switch (Combination switch assembly)	Click here
	Pattern select switch sport mode circuit	Click here
	Combination meter assembly	Click here
SPORT mode indicator light does not turn off	SPORT mode switch (Combination switch assembly)	Click here
	Pattern select switch sport mode circuit	Click here
	Combination meter assembly	Click here
Hesitation and/or poor acceleration	Brake override system	Click here
Shift position cannot be changed by shifting to "+" or "-"	Transmission control switch circuit	Click here
Power switch does not turn on (READY)	Battery voltage sensor (wrong assembly confirmation)*	Click here
	Entry and start system (for Start Function)	Click here
	ECU power source circuit	Click here
	Hybrid vehicle control ECU	Click here
	ECM	Click here
Loud rattle from hybrid vehicle transaxle	Check idle learning (w/ EGR System)	Click here
	Check idle learning (w/o EGR System)	Click here
	Check idle learning (w/ Canister Pump Module)	Click here
	Transmission input damper assembly	Click here
	Hybrid vehicle transaxle assembly	Click here
	Engine misfire	-

*: Check the part number of the battery voltage sensor.
If the battery voltage sensor had been replaced just before the malfunction occurred, check the part number of the battery voltage sensor.
Using the GTS, check the vehicle control history.
Click here

Tip:
If "Battery Smart Unit Mismatch" is displayed, the wrong type of battery voltage sensor is installed.
After installing the battery voltage sensor, perform the following to check that the power switch can be turned on (READY).
1. Turn the power switch on (READY).
2. Turn the power switch off and wait for 30 seconds or more.
3. Turn the power switch on (READY) again.

Tip:

The type of battery voltage sensor to be used varies depending on the vehicle model.
If the wrong type of battery voltage sensor is installed, the power switch cannot be turned on (READY).