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 |
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSION
HINT:
The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ign ...
Tachometer Malfunction
DESCRIPTION
In this circuit, the meter CPU receives engine speed signals from the ECM using
the CAN communication system. The meter CPU displays the engine speed, which is
calculated based on the data received from the ECM.
WIRING DIAGRAM
PROCEDURE
...