| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EEKH |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 10/2023] |
| Title: STOP AND START: STOP AND START SYSTEM: P253014; Ignition Switch Circuit Short to Ground or Open; 2019 - 2023 MY RAV4 [11/2018 - 10/2023] | ||
|
DTC |
P253014 |
Ignition Switch Circuit Short to Ground or Open |
DESCRIPTION
If the engine stop and start ECU receives the off signal from the ignition or starter switch assembly*1 or certification ECU (smart key ECU assembly)*2 when communication with the ECM is normal, the engine stop and start ECU will store DTC P253014.
- *1: w/o Smart Key System
- *2: w/ Smart Key System
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P253014 |
Ignition Switch Circuit Short to Ground or Open |
All of the following conditions are met for 10 seconds or more (1 trip detection logic):
|
|
Does not come on |
DTC stored |
SAE Code: P2531 |
CONFIRMATION DRIVING PATTERN
HINT:
-
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)
-
If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
- After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
- Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.
CONFIRMATION AFTER TROUBLESHOOTING
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs.
Powertrain > Stop and Start > Clear DTCs
(e) Start the engine and warm it up.
(f) Drive the vehicle at 7 km/h (4 mph) or more.
CAUTION:
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
(g) Depress the brake pedal and stop the vehicle.
(h) Keep the engine stopped by stop and start control for 10 second or more. (Keep the shift lever in D.)
(i) Release the brake pedal with the shift lever in D to start the engine.
(j) Check that DTCs are not output.
Powertrain > Stop and Start > Trouble Codes
STOP AND START SYSTEM OPERATION CHECK
HINT:
-
If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.
In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item "Status of Battery Charge Control" changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (51°F) or higher, the refresh charge will be completed.)
-
If the Techstream is not available and the Data List item "Status of Battery Charge Control" cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.
If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.
- After the refresh charge completes, turn the ignition switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
(a) Start the engine and warm it up.
(b) Turn the air conditioning system off.
(c) Drive the vehicle at 7 km/h (4 mph) or more.
CAUTION:
When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.
(d) Depress the brake pedal and stop the vehicle.
(e) Allow the engine to stop by stop and start control. (Keep the shift lever in D.)
(f) Release the brake pedal with the shift lever in D to start the engine.
WIRING DIAGRAM
w/ Smart Key System
w/o Smart Key System
CAUTION / NOTICE / HINT
NOTICE:
-
Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.
Click here
![2019 MY RAV4 [11/2018 - 10/2019]; STOP AND START: STOP AND START SYSTEM: REGISTRATION](/t3Portal/stylegraphics/info.gif)
-
After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.
Click here
-
After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.
Click here
-
When the engine stop and start ECU or oil pump with solenoid assembly is replaced, check the oil pump with solenoid assembly.
Click here
- Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
-
Using the Techstream, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.
Click here
-
DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.
Click here
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (IG SWITCH) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Stop and Start / Data List / IG Switch.
Powertrain > Stop and Start > Data List
|
Tester Display |
|---|
|
IG Switch |
(e) According to the display on the Techstream, read the Data List.
|
Techstream Display |
Result |
Proceed to |
|---|---|---|
|
IG Switch |
ON |
A |
|
OFF |
B |
| A |
|
|
|
2. |
CHECK ENGINE STOP AND START ECU (IG2 TERMINAL VOLTAGE) |
|
*a |
Component with harness connected (Engine Stop and Start ECU) |
- |
- |
(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A32-18 (IG2) - Body ground |
Ignition switch ON |
9.5 to 14 V |
| NG |
|
|
|
3. |
CHECK ENGINE STOP AND START ECU (+B TERMINAL VOLTAGE) |
|
*a |
Component with harness connected (Engine Stop and Start ECU) |
- |
- |
(a) Turn the ignition switch to ON.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A34-1 (+B) - Body ground |
Ignition switch ON |
9.5 to 14 V |
| OK |
|
REPLACE ENGINE STOP AND START ECU
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - EFI-MAIN NO. 1 RELAY) |
(a) Disconnect the engine stop and start ECU connector.
(b) Remove the EFI-MAIN NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A34-1 (+B) - 5 (EFI-MAIN NO. 1 relay) |
Always |
Below 1 Ω |
|
A34-1 (+B) or 5 (EFI-MAIN NO. 1 relay) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
INSPECT EFI-MAIN NO. 1 RELAY |
(a) Inspect the EFI-MAIN NO. 1 relay.
Click here
| OK |
|
GO TO ECM POWER SOURCE CIRCUIT
|
| NG |
|
REPLACE EFI-MAIN NO. 1 RELAY |
|
6. |
CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG2 NO. 2 RELAY)) |
(a) Disconnect the engine stop and start ECU connector.
(b) Disconnect the instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A32-18 (IG2) - 4D-32 |
Always |
Below 1 Ω |
|
A32-18 (IG2) or 4D-32 - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (POWER SOURCE) |
|
*a |
Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
(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 |
|---|---|---|
|
4L-1 - Body ground |
Always |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
|
|
8. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG2 NO. 2 RELAY) |
(a) Remove the instrument panel junction block assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4L-1 - 4D-32 |
Battery positive (+) → 4A-17 Battery negative (-) → 4D-3 |
Below 1 Ω |
|
4L-1 - 4D-32 |
Battery not connected to 4A-17 and 4D-3 |
10 kΩ or higher |
|
Result |
Proceed to |
|---|---|
|
OK (w/ Smart Key System) |
A |
|
OK (w/o Smart Key System) |
B |
|
NG |
C |
| B |
|
| C |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG2 NO. 2 RELAY) |
|
|
9. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG2 NO. 2 RELAY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) |
(a) Disconnect the instrument panel junction block assembly connector.
(b) Disconnect the certification ECU (smart key ECU assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4A-17 - G54-17 (IG1D) |
Always |
Below 1 Ω |
|
4A-17 or G54-17 (IG1D) - Body ground and other terminals |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
10. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG2 NO. 2 RELAY) - IGNITION OR STARTER SWITCH ASSEMBLY) |
(a) Disconnect the instrument panel junction block assembly connector.
(b) Disconnect the ignition or starter switch assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4A-17 - G28-8 (IG1) |
Always |
Below 1 Ω |
|
4A-17 or G28-8 (IG1) - Body ground and other terminals |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
11. |
INSPECT IGNITION OR STARTER SWITCH ASSEMBLY |
(a) Inspect the ignition or starter switch assembly.
Click here
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION OR STARTER SWITCH ASSEMBLY) |
| NG |
|
|
|