| Last Modified: 01-30-2024 | 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.
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
-
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 |
|
|