| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001KNE6 |
| Model Year Start: 2020 | Model: RAV4 | Prod Date Range: [10/2019 - 10/2023] |
| Title: STOP AND START: STOP AND START SYSTEM: P085012,P085014; Park/Neutral Switch Circuit Short to Battery; 2020 - 2023 MY RAV4 [10/2019 - 10/2023] | ||
|
DTC |
P085012 |
Park/Neutral Switch Circuit Short to Battery |
|
DTC |
P085014 |
Park/Neutral Switch Circuit Short to Ground or Open |
DESCRIPTION
The engine stop and start ECU detects malfunctions by comparing the conditions of the shift position signal and NSW signal. If a malfunction is detected, the engine stop and start ECU blinks the stop and start cancel indicator, prohibits stop and start control and stores DTC P085012 or P085014.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Memory |
Note |
|---|---|---|---|---|---|---|
|
P085012 |
Park/Neutral Switch Circuit Short to Battery |
Both of the following conditions are met for 15 seconds or more (2 trip detection logic):
|
|
Blinks |
DTC stored |
SAE Code: P0852 |
|
P085014 |
Park/Neutral Switch Circuit Short to Ground or Open |
Both of the following conditions are met for 2 seconds or more (2 trip detection logic):
|
|
Blinks |
DTC stored |
SAE Code: P0851 |
WIRING DIAGRAM
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
![2020 - 2021 MY RAV4 [10/2019 - 12/2021]; 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.
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-
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
-
When the ECM is replaced on a vehicle with a non-specified battery, it is necessary to perform battery type switching.
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-
Perform Registration (VIN registration or frame number registration) when replacing the ECM.
Click here
-
Make sure to perform Reset Memory (A/T initialization), when replacing the automatic transaxle assembly, ECM or engine assembly.
-
for 2WD:
Click here
-
for AWD:
Click here
-
for 2WD:
- 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.
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PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (SHIFT SW STATUS) |
(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 / Transmission / Data List / Shift SW Status (P, R, N, D Range).
Powertrain > Transmission > Data List
|
Tester Display |
|---|
|
Shift SW Status (P Range) |
|
Shift SW Status (R Range) |
|
Shift SW Status (N Range) |
|
Shift SW Status (D Range) |
(e) In accordance with the display on the Techstream, read the Data List.
Powertrain > Transmission > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
|---|---|---|---|
|
Shift SW Status (P Range) |
Park/Neutral position switch assembly status |
OFF or ON |
OFF: Shift lever not in P ON: Shift lever in P |
|
Shift SW Status (R Range) |
Park/Neutral position switch assembly status |
OFF or ON |
OFF: Shift lever not in R ON: Shift lever in R |
|
Shift SW Status (N Range) |
Park/Neutral position switch assembly status |
OFF or ON |
OFF: Shift lever not in N ON: Shift lever in N |
|
Shift SW Status (D Range) |
Park/Neutral position switch assembly status |
OFF or ON |
OFF: Shift lever not in D or S ON: Shift lever in D or S |
| NG |
|
|
|
2. |
READ VALUE USING TECHSTREAM (NEUTRAL POSITION SW) |
(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 / Transmission / Data List / Neutral Position SW.
Powertrain > Transmission > Data List
|
Tester Display |
|---|
|
Neutral Position SW |
(e) In accordance with the display on the Techstream, read the Data List.
Powertrain > Transmission > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
|---|---|---|---|
|
Neutral Position SW |
Park/Neutral position switch assembly status |
OFF or ON |
OFF: Shift lever not in P or N ON: Shift lever in P or N |
| OK |
|
|
|
3. |
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY |
(a) Inspect the park/neutral position switch assembly.
-
for 2WD:
Click here
-
for AWD:
Click here
| NG |
|
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) |
(a) Disconnect the engine stop and start ECU connector.
(b) Disconnect the park/neutral position switch assembly connector.
(c) Disconnect the ECM connector.
(d) Disconnect the certification ECU (smart key ECU assembly) connector. (w/ Smart Key System)
(e) Remove the ST NO. 1 relay from the No. 1 engine room relay block and No. 1 junction block assembly.
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A34-21 (STA) - C31-9 (L) |
Always |
Below 1 Ω |
|
A34-17 (CLL) - C31-4 (B) |
Always |
Below 1 Ω |
|
A34-21 (STA) or C31-9 (L) - Body ground and other terminals |
Always |
10 kΩ or higher |
|
A34-17 (CLL) or C31-4 (B) - Body ground and other terminals |
Always |
10 kΩ or higher |
| OK |
|
REPLACE ENGINE STOP AND START ECU
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY |
(a) Inspect the park/neutral position switch assembly.
-
for 2WD:
Click here
-
for AWD:
Click here
| NG |
|
REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY
|
|
|
6. |
CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY) |
(a) Disconnect the ECM connector.
(b) Disconnect the park/neutral position switch assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C41-26 (P) - C31-3 (PL) |
Always |
Below 1 Ω |
|
C41-25 (R) - C31-2 (RL) |
Always |
Below 1 Ω |
|
C41-24 (N) - C31-8 (NL) |
Always |
Below 1 Ω |
|
C41-23 (D) - C31-7 (DL) |
Always |
Below 1 Ω |
|
A24-23 (NSW) - C31-4 (B) |
Always |
Below 1 Ω |
| OK |
|
REPLACE ECM
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|