Power Source Mode does not Change to ON (ACC)

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): Power Source Mode does not Change to ON (ACC)
- Power Source Mode does not Change to ON (ACC)

DESCRIPTION

If the power switch is pressed with the electrical key transmitter sub-assembly in the cabin, the power management control ECU receives a signal and changes the power source mode.

HINT
When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* When using the Techstream with the power switch off, perform either of the following: 1) Turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins, or 2) connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus:
for Power Source Control: Body Electrical / Power Source Control / DTC.
for Smart Key: Body Electrical / Smart Key / DTC.
* The smart key system (for Start Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How To Proceed With Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
* Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart Smart Key System (for Start Function).
* If the smart key system is disabled through the customize function, enable the system before performing troubleshooting Smart Key System (for Start Function).
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.
* After completing repairs, confirm that the problem does not occur.

HINT

Related Data List and Active Test Items








PROCEDURE

1. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) B2274

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY B2274

NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal
OK -- Continue to next step.

3. INSPECT POWER MANAGEMENT CONTROL ECU B2274

NG -- REPLACE POWER MANAGEMENT CONTROL ECU Removal

OK -- CHECK RELAY CONTACT SIDE CIRCUIT