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 |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE NO. 1 BRAKE ACTUATOR BRACKET
(a) Using a 5 mm hexagon wrench, remove the bolt and No. 1 brake actuator
bracket.
(b) Using a screwdriver, remove the brake fl ...