Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001KSBS |
Model Year Start: 2020 |
Model: Corolla Hatchback |
Prod Date Range: [09/2019 - 09/2022] |
Title: M20A-FKS (ENGINE CONTROL): SFI SYSTEM: P085011; Park/Neutral Switch Circuit Short to Ground; 2020 - 2022 MY Corolla Corolla Hatchback [09/2019 - 09/2022] |
DTC
|
P085011
|
Park/Neutral Switch Circuit Short to Ground
|
DESCRIPTION
The neutral position switch detects whether the shift lever is in neutral or not and outputs a signal to the ECM. The neutral position switch is installed to the transaxle and is connected to the ECM via a wire harness.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
MIL
|
Memory
|
Note
|
P085011
|
Park/Neutral Switch Circuit Short to Ground
|
Diagnosis condition:
Abnormal condition:
-
The neutral position switch output voltage is less than 0.12 V.
Malfunction time:
Trip logic:
Detection conditions:
Sensors/components used for detection:
|
-
Short in neutral position switch circuit
-
Neutral position switch
-
ECM
|
Does not come on
|
DTC stored
|
-
SAE Code: P0851
-
DTC for Mexico Models: Does not apply
|
MONITOR DESCRIPTION
When the ignition switch is turned ON and the output voltage of the neutral position switch is less than 0.12 V for 3 seconds or more, the ECM determines that the neutral position switch circuit is malfunctioning and stores a DTC.
MONITOR STRATEGY
Required Sensors/Components
|
Neutral position switch
|
Frequency of Operation
|
Continuous
|
CONFIRMATION DRIVING PATTERN
HINT:
-
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
-
Connect the Techstream to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the Techstream on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the ignition switch off and wait for at least 30 seconds.
-
Turn the ignition switch to ON [A].
-
Turn the Techstream on.
-
Wait 5 seconds or more [B].
-
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
-
Read the pending DTCs.
HINT:
-
If a pending DTC is output, the system is malfunctioning.
-
If a pending DTC is not output, perform the following procedure.
-
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
-
Proceed to the next screen and enter the DTC to be checked.
-
Check the DTC judgment result.
Techstream Display
|
Description
|
NORMAL
|
-
DTC judgment completed
-
System normal
|
ABNORMAL
|
-
DTC judgment completed
-
System abnormal
|
INCOMPLETE
|
-
DTC judgment not completed
-
Perform driving pattern after confirming DTC enabling conditions
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Read Freeze Frame Data using the Techstream. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1.
|
READ VALUE USING TECHSTREAM (NEUTRAL POSITION SWITCH OUTPUT VOLTAGE)
|
HINT:
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
(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 / Engine / Data List / Neutral Position Switch Output Voltage.
Powertrain > Engine > Data List
Tester Display
|
Neutral Position Switch Output Voltage
|
(e) Record the Neutral Position Switch Output Voltage value.
(f) Turn the ignition switch off.
(g) Turn the Techstream off.
(h) Disconnect the neutral position switch connector.
(i) Turn the ignition switch to ON.
(j) Turn the Techstream on.
(k) Enter the following menus: Powertrain / Engine / Data List / Neutral Position Switch Output Voltage.
Powertrain > Engine > Data List
Tester Display
|
Neutral Position Switch Output Voltage
|
(l) Compare the Data List value when the connector is connected and when the connector is not connected.
Result
|
Proceed to
|
The value of Neutral Position Switch Output Voltage changes
|
A
|
The value of Neutral Position Switch Output Voltage does not change
|
B
|
A
|
|
|
2.
|
CHECK TERMINAL VOLTAGE (NEUTRAL POSITION SWITCH)
|
*a
|
Front view of wire harness connector
(to Neutral Position Switch)
|
(a) Disconnect the neutral position switch connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
C63-1 (W1) - Body ground
|
Ignition switch ON
|
4.5 to 5.5 V
|
NG
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (NEUTRAL POSITION SWITCH - ECM)
|
(a) Disconnect the neutral position switch connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
C63-1 (W1) - C76-83 (VCNP)
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
4.
|
CHECK TERMINAL VOLTAGE (NEUTRAL POSITION SWITCH)
|
*a
|
Front view of wire harness connector
(to Neutral Position Switch)
|
(a) Disconnect the neutral position switch connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
C63-2 (TMN) - Body ground
|
Ignition switch ON
|
3.0 to 5.5 V
|
NG
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (NEUTRAL POSITION SWITCH - ECM)
|
(a) Disconnect the neutral position switch connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
C63-2 (TMN) or C76-106 (NPSW) - Body ground and other terminals
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|