DESCRIPTION
When the engine switch is pushed with the electrical key in the cabin, the power management control ECU receives signals to change the power source mode.
HINT:
To allow use of the Techstream to inspect the push-button start function when the power source mode is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between the Techstream and the power management control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)
WIRING DIAGRAM
PROCEDURE
1. |
CHECK DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
(c) Turn on and off any of the door courtesy light switches repeatedly at 1.5-second intervals or less until communication between the Techstream and vehicle starts.
(d) Enter the following menus: Body Electrical / All ECUs / Health Check.
(e) Clear the DTC.
(f) Check for DTCs again.
OK:
DTCs are not output.
NG |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
2. |
CHECK SMART KEY SYSTEM |
(a) Remove the battery of the electrical key transmitter (See page ). |
|
(b) Touch the logo side mark of the key or card key to the engine switch.
(c) Check that the engine switch can be turned on (IG).
OK:
Power source mode can be changed.
NG |
GO TO DIAGNOSIS PROCEDURE (Room Oscillator does not Recognize Key) |
|
3. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
|
4. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
|
5. |
READ VALUE USING TECHSTREAM |
(a) Reconnect the D42 connector to the power management control ECU.
(b) Enter the following menus: Body Electrical / Power Source Control / Data List.
(c) Read the Data List according to the display on the Techstream.
Power Source Control
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Start Switch1 |
Start switch 1/ON or OFF |
ON: Engine switch pushed OFF: Engine switch not pushed |
- |
Start Switch2 |
Start switch 2/ON or OFF |
ON: Engine switch pushed OFF: Engine switch not pushed |
- |
OK:
ON (engine switch is pushed) and OFF (engine switch is not pushed) appear on the screen.
OK |
REPLACE POWER MANAGEMENT CONTROL ECU |
|
6. |
INSPECT ENGINE SWITCH |
(a) Remove the engine switch (See page ). |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
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 |
Component without harness connected (Engine Switch) |
(c) Proceed to next step based on the inspection result.
Result |
Proceed to |
---|---|
OK |
A |
NG |
B |
NG |
C |
B |
REPLACE ENGINE SWITCH (for 2ZR-FE) |
C |
REPLACE ENGINE SWITCH (for 1AR-FE) |
|
7. |
CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - POWER MANAGEMENT CONTROL ECU AND BODY GROUND) |
(a) Disconnect the D43 connector from power management control ECU.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D13-7 (SS1) - D43-18 (SSW1) |
Always |
Below 1 Ω |
D13-7 (SS1) - Body ground |
Always |
10 kΩ or higher |
D13-2 (SS2) - D43-17 (SSW2) |
Always |
Below 1 Ω |
D13-2 (SS2) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Engine Switch) |
*2 |
Front view of wire harness connector (to Power Management Control ECU) |
OK |
REPLACE POWER MANAGEMENT CONTROL ECU |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE SWITCH - POWER MANAGEMENT CONTROL ECU OR BODY GROUND) |
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FOR COOLANT LEAK
HINT:
The sliding surface inside the engine water pump assembly is lubricated
by engine coolant. As some engine coolant is discharged during normal operation,
engine coolant residu ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The procedure listed below is for the LH side.
PROCEDURE
1. PRECAUTION
CAUTION:
Be sure to read Precaution thoroughly before servicing (See page
...
Front Axle Hub Bolt
Components
COMPONENTS
ILLUSTRATION
Replacement
REPLACEMENT
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The procedure listed below is for the LH side.
PROCEDURE
1. REMOVE FRONT WHEEL
2. SEP ...