Power Source Control
- Stop Light Switch1
- Shift P Signal
- IG Relay Monitor (Inside)
- IG Relay Monitor (Outside)
- Latch Circuit
- Starter Request Signal
- Power Supply Condition
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000020GYI |
| Model Year Start: 2022 | Model: RAV4 HV | Prod Date Range: [12/2021 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): Power Source Mode does not Change to ON (READY); 2022 - 2024 MY RAV4 HV [12/2021 - ] | ||
|
Power Source Mode does not Change to ON (READY) |
DESCRIPTION
When the electrical key transmitter sub-assembly is in the cabin and the power switch is pressed, the certification ECU (smart key ECU assembly) receives a signal and changes the power source mode. Additionally, when the shift state is park (P) and the brake pedal is depressed, the hybrid control system can be started by pressing the power switch.
Related Data List and Active Test Items
|
Problem Symptom |
Data List and Active Test |
|---|---|
|
Power source mode does not change to ON (READY) |
Smart Key
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the power 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.
-
If the smart key system (for Start Function) has been canceled, enable the system before performing troubleshooting.
Click here
![2019 - 2022 MY RAV4 HV [11/2018 - 10/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): CUSTOMIZE PARAMETERS](/t3Portal/stylegraphics/info.gif)
- Inspect the fuses of circuits related to this system before performing the following procedure.
-
Before replacing the certification ECU (smart key ECU assembly) or an electrical key transmitter sub-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".
-
When disconnecting the cable from the negative (-) auxiliary battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.
Click here
PROCEDURE
|
1. |
CHECK POWER SWITCH CONDITION |
(a) Get into the vehicle while carrying an electrical key transmitter sub-assembly.
(b) Move the shift state park (P).
(c) With the brake pedal released, check that pressing the power switch causes the power source mode to change.
|
Result |
Proceed to |
|---|---|
|
Power source mode changes : Off → on (ACC) → on (IG) → off |
A |
|
Power source mode does not change to on (ACC) or on (IG) |
B |
|
Power source mode changes to on (IG) but not to on (ACC) |
C |
|
Power source mode changes to on (ACC) but not to on (IG) |
D |
| B |
|
GO TO SMART KEY SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG and ACC)) |
| C |
|
GO TO SMART KEY SYSTEM (for Start Function) (Power Source Mode does not Change to ON (ACC)) |
| D |
|
GO TO SMART KEY SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG)) |
|
|
2. |
READ VALUE USING TECHSTREAM (STOP LIGHT SWITCH1) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Power Source Control / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Stop Light Switch1 |
State of brake pedal |
OFF or ON |
OFF: Brake pedal released ON: Brake pedal depressed |
|
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Stop Light Switch1 |
OK:
The Techstream display changes correctly in response to the brake pedal operation.
| NG |
|
|
|
3. |
READ VALUE USING TECHSTREAM (SHIFT P SIGNAL) |
(a) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Shift P Signal |
State of brake pedal |
ON or OFF |
ON: Shift state park (P) OFF: Shift state not park (P) |
|
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Shift P Signal |
OK:
The Techstream display changes correctly in response to the shift state.
| NG |
|
|
|
4. |
READ VALUE USING TECHSTREAM (STARTER REQUEST SIGNAL) |
(a) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Starter Request Signal |
Hybrid control system start request signal status |
OFF or ON |
OFF: The power switch is not pressed ON: With the shift state park (P) and the brake pedal depressed, the power switch is pressed and held |
|
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Starter Request Signal |
NOTICE:
Check that the key indicator display is displayed on the multi-information display in the combination meter assembly, and then press the power switch.
OK:
The Techstream display changes correctly in response to the power switch operation.
| NG |
|
|
|
5. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU ASSEMBLY) |
(a) Disconnect the G54 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the A30 hybrid vehicle control ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G54-27 (ST2) - A30-4 (ST2) |
Always |
Below 1 Ω |
|
G54-27 (ST2) or A30-4 (ST2) - Other terminals and body ground |
Always |
10 kΩ or higher |
(d) Connect the G54 certification ECU (smart key ECU assembly) connector.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK |
|
GO TO HYBRID CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) for AWD with Nickel Metal Hydride Battery: Click here
for Lithium-ion Battery Click here
|
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
7. |
CHECK SECURITY INDICATOR LIGHT (IMMOBILISER FUNCTION UNSET) |
(a) Get into the vehicle while carrying an electrical key transmitter sub-assembly.
(b) Move the shift state park (P).
(c) Press the power switch with the brake pedal released and check that the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).
OK:
The security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).
HINT:
The immobiliser function can be determined to be operating correctly if the security indicator light changes from blinking to off at the same time that the power source mode changes to on (ACC).
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
GO TO SMART KEY SYSTEM (for Start Function) (Immobiliser System does not Operate Properly) |
|
8. |
CHECK SHIFT LOCK CONTROL UNIT ASSEMBLY (OUTPUT TO CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) |
|
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
|
9. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - SHIFT LOCK CONTROL UNIT ASSEMBLY) |
(a) Disconnect the G54 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the G26 shift lock control unit assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G54-22 (P) - G26-3 (P2) |
Always |
Below 1 Ω |
|
G54-22 (P) or G26-3 (P2) - Other terminals and body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
10. |
CHECK SHIFT LOCK CONTROL UNIT ASSEMBLY |
|
(a) Reconnect the certification ECU (smart key ECU assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
G54-22 (P) - Other terminals and body ground |
Power switch off |
9 V or higher |
| OK |
|
| NG |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
|
11. |
CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - POWER SUPPLY AND BODY GROUND) |
|
(a) Disconnect the stop light switch assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A40-7 (B) - Body ground |
Power switch off |
11 to 14 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A40-2 (GND) - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
12. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY) |
(a) Disconnect the M7 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the A29 hybrid vehicle control ECU assembly connector.
(c) Disconnect the A105 No. 2 skid control ECU (brake actuator assembly) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M7-25 (STP1) - A40-3 (L) |
Always |
Below 1 Ω |
|
M7-25 (STP1) or A40-3 (L) - Other terminals and body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
13. |
INSPECT STOP LIGHT SWITCH ASSEMBLY |
(a) Inspect the stop light switch assembly.
Click here
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
| NG |
|
|
|