Power Source Control
- Power Supply Condition
- ACC Relay Monitor
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001G22G |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): Power Source Mode does not Change to ON (ACC); 2019 - 2024 MY RAV4 [11/2018 - ] | ||
|
Power Source Mode does not Change to ON (ACC) |
DESCRIPTION
If the engine switch is pressed with the electrical key transmitter sub-assembly in the cabin, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode.
Related Data List and Active Test Items
|
Problem Symptom |
Data List and Active Test |
|---|---|
|
Power source mode does not change to on (ACC) but does change to on (IG) |
|
HINT:
Use this procedure to troubleshoot the malfunction that ACC mode of all the ECUs is not available.
When ACC mode of some ECUs is not available, check the ACC power source circuit related to the malfunctioning ECUs.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
- Make sure that no DTCs are output. If any DTCs are output, proceed to Diagnostic Trouble Code Chart.
-
If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting.
Click here
![2019 - 2020 MY RAV4 [11/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function, Gasoline Model): CUSTOMIZE PARAMETERS](/t3Portal/stylegraphics/info.gif)
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Before replacing the certification ECU (smart key ECU assembly), refer to the Registration.
Click here
- After completing repairs, confirm that the problem does not recur.
- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key, Power Source Control / Trouble Codes.
(e) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
Body Electrical > Power Source Control > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
Smart key system (for Start Function) DTCs are output |
B |
| B |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - POWER SUPPLY) |
|
(a) Disconnect the instrument panel junction block assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4K-1 - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(a) Remove the instrument panel junction block assembly.
Click here
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
(c) Connect a positive (+) lead from the battery to terminal 4A-30.
(d) Connect a negative (-) lead from the battery to terminal 4D-3.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4K-1 - 4A-40 |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
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