DESCRIPTION When selecting
ECO drive mode, the ECO drive mode switch (electric parking brake switch
assembly) operation signal is sent to the air conditioning amplifier
assembly. Following this, ECO drive mode control is activated for the
heater and air conditioning system and the hybrid vehicle control
system. WIRING DIAGRAM
 PROCEDURE
| 1. |
READ VALUE USING TECHSTREAM (CAN BUS CHECK) |
Click here 
|
Result | Proceed to | |
All of the ECUs and sensors that are currently connected to the CAN communication system are displayed |
A | | None
of the ECUs and sensors that are currently connected to the CAN
communication system are displayed, or some of them are not displayed |
B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
|
A |
 | |
| 2. |
CHECK DTC OUTPUT (HEALTH CHECK) | Click here
|
Result | Proceed to | |
No DTCs are output | A | |
DTCs are output | B |
| B |
| GO TO DTC CHART |
|
A | |
| |
| 3. |
READ VALUE USING TECHSTREAM (ECO SWITCH) |
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG).
(c) Enter the following menus: Body Electrical / Air Conditioner / Data List / ECO Switch. Body Electrical > Air Conditioner > Data List
|
Tester Display | | ECO Switch |
(d) Read the value displayed on the Techstream. Body Electrical > Air Conditioner > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition | |
ECO Switch | ECO drive mode switch condition |
ON or OFF | ECO drive mode switch being pushed and held: ON
ECO drive mode switch not operated: OFF |
|
Result | Proceed to | |
The Techstream display changes according to the ECO drive mode switch operation |
A | | The Techstream display does not change according to the ECO drive mode switch operation |
B |
| A |
| REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
B | |
| |
| 4. |
INSPECT ECO DRIVE MODE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) |
Click here
| NG |
| REPLACE ELECTRIC PARKING BRAKE SWITCH ASSEMBLY |
|
OK | |
| |
| 5. |
CHECK HARNESS AND CONNECTOR (ECO DRIVE MODE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) - BODY GROUND) |
(a) Disconnect the G24 ECO drive mode switch (electric parking brake switch assembly) connector.
| (b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G24-16 (GND1) - Body ground |
Always | Below 1 Ω | |
 |
|
*a | Front view of wire harness connector
(to ECO Drive Mode Switch (Electric Parking Brake Switch Assembly)) | | |
(c) Reconnect the G24 ECO drive mode switch (electric parking brake switch assembly) connector.
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 6. |
CHECK
HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - ECO DRIVE
MODE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)) |
(a) Disconnect the G36 air conditioning amplifier assembly connector. (b) Disconnect the G24 ECO drive mode switch (electric parking brake switch assembly) connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G36-20 (ECOS) - G24-11 (ECU) |
Always | Below 1 Ω | |
G36-20 (ECOS) or G24-11 (ECU) - Body ground |
Always | 10 kΩ or higher | |
 |
|
*a | Front view of wire harness connector
(to Air Conditioning Amplifier Assembly) | |
*b | Front view of wire harness connector
(to ECO Drive Mode Switch (Electric Parking Brake Switch Assembly)) | | |
(d) Reconnect the G24 ECO drive mode switch (electric parking brake switch assembly) connector.
(e) Reconnect the G36 air conditioning amplifier assembly connector.
| OK |
| REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
