Power Source Mode does not Change to ON (IG)
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 DIAGRAMRefer to DTC B2271 (See page
).
PROCEDURE
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)
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| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) |
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CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)
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| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) |
|
INSPECT IG1 RELAY
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| NG | ![]() | REPLACE IG1 RELAY |
|
CHECK HARNESS AND CONNECTOR
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| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
CHECK HARNESS AND CONNECTOR
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| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
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| NG | ![]() | REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
|
INSPECT IG2 RELAY
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| NG | ![]() | REPLACE IG2 RELAY |
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CHECK HARNESS AND CONNECTOR
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| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
CHECK HARNESS AND CONNECTOR (IG2 RELAY - BODY GROUND)
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| OK | ![]() | REPLACE POWER MANAGEMENT CONTROL ECU |
| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Test yourself
A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.
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