DESCRIPTION
When the engine switch is pushed with the key in the cabin, the power management control ECU receives signals to switch the power source mode.
HINT:
To allow use of the Techstream to inspect the push-button start function when the engine switch is off, repeatedly open and close any of the doors. Repeatedly opening and closing a door establishes communication between the Techstream and power management control ECU (opening and closing a door can also be simulated by operating a door courtesy light switch).
WIRING DIAGRAM
Refer to "Power Source Mode does not Change to on (IG and ACC)" (See page
).
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT DRIVER SIDE JUNCTION BLOCK ASSEMBLY (ACC RELAY) |
NG | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
|
4. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
CHECK POWER MANAGEMENT CONTROL ECU |
NG | ![]() |
REPLACE POWER MANAGEMENT CONTROL ECU |
|
7. |
CONFIRMATION TEST |
OK | ![]() |
USE SIMULATION METHOD TO CHECK |
NG | ![]() |
CHECK RELAY CONTACT SIDE CIRCUIT |
Open in One Side of CAN Branch Line
DESCRIPTION
If 2 or more ECUs and/or sensors do not appear on the Techstream "CAN Bus Check"
screen, one side of the CAN branch wire may be open (one side of the CANH [branch
wire]/CANL [branch wire] of the ECU and/or sensor is open).
...
AVC-LAN Circuit
DESCRIPTION
Each unit of the navigation system connected to the AVC-LAN (communication bus)
transfers the switch signals using the AVC-LAN.
If a short to +B or short to ground occurs in the AVC-LAN, the navigation system
will not function normally becaus ...