RM3660EC _51 Engine / Hybrid System _080774 STOP AND START _0393362 STOP AND START SYSTEM C

STOP AND START  STOP AND START SYSTEM  P085012  Park/Neutral Switch Circuit Short to Battery  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):
·

Ignition switch ON.

·

NSW signal is off with the shift lever in P or N.


·

Wire harness or connector

·

Park/Neutral position switch assembly

·

ECM

·

Engine stop and start ECU


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):
·

Ignition switch ON.

·

NSW signal is on with the shift lever not in P or N.


·

Wire harness or connector

·

Park/Neutral position switch assembly

·

ECM

·

Engine stop and start ECU


Blinks DTC stored SAE Code: P0851

WIRING DIAGRAM

w/ Smart Entry and Start System


A446537E01
3.292,0.552 5.573,0.875 2.281,0.323 10 false from BKUP LP Fuse 3.656,4.052 5.729,4.719 2.073,0.667 10 false to ST Relay and Certification ECU (Smart Key ECU Assembly) 5.979,4.146 6.49,4.49 0.51,0.344 10 false A124 5.969,4.313 7,4.792 1.031,0.479 10 false Engine Stop and Start ECU 6.208,3.552 6.552,3.844 0.344,0.292 10 false STA 6.219,0.979 6.563,1.271 0.344,0.292 10 false CLL 5.948,3.417 6.292,3.708 0.344,0.292 10 false 21 5.948,0.854 6.292,1.146 0.344,0.292 10 false 17 0.552,0.979 1.042,1.271 0.49,0.292 10 false NSW 0.792,2.656 1.281,2.948 0.49,0.292 10 false P 0.781,3.24 1.271,3.531 0.49,0.292 10 false R 0.781,3.781 1.271,4.073 0.49,0.292 10 false N 0.792,4.417 1.281,4.708 0.49,0.292 10 false D 4.406,1.521 4.896,1.813 0.49,0.292 10 false C62 4.406,1.688 5.74,2.115 1.333,0.427 10 false Park/Neutral Position Switch Assembly 1.094,0.75 1.583,1.042 0.49,0.292 10 false 57 1.094,2.438 1.583,2.729 0.49,0.292 10 false 65 1.094,3.021 1.583,3.313 0.49,0.292 10 false 35 1.094,3.594 1.583,3.885 0.49,0.292 10 false 66 1.083,4.188 1.573,4.479 0.49,0.292 10 false 34 1.958,2.25 2.448,2.542 0.49,0.292 10 false PL 2.438,2.26 2.927,2.552 0.49,0.292 10 false RL 2.875,2.26 3.365,2.552 0.49,0.292 10 false NL 3.354,2.271 3.844,2.563 0.49,0.292 10 false DL 3.906,2.271 4.396,2.563 0.49,0.292 10 false L 2.698,1.406 3.188,1.698 0.49,0.292 10 false RB 3.885,1.396 4.375,1.688 0.49,0.292 10 false B 2.802,1.167 3.292,1.458 0.49,0.292 10 false 1 3.906,1.177 4.396,1.469 0.49,0.292 10 false 4 2.063,2.49 2.552,2.781 0.49,0.292 10 false 3 2.521,2.5 3.01,2.792 0.49,0.292 10 false 2 2.979,2.49 3.469,2.781 0.49,0.292 10 false 8 3.438,2.5 3.927,2.792 0.49,0.292 10 false 7 3.906,2.49 4.396,2.781 0.49,0.292 10 false 9 0.448,4.813 2.688,5.135 2.24,0.323 10 false ECM 1.063,0.969 1.521,1.167 0.458,0.198 10 false A46 1.052,4.385 1.51,4.583 0.458,0.198 10 false C78 1.052,2.667 1.51,2.865 0.458,0.198 10 false C78 1.042,3.229 1.5,3.427 0.458,0.198 10 false C78 1.052,3.792 1.51,3.99 0.458,0.198 10 false C78


w/o Smart Entry and Start System


A446538E01
3.271,0.542 5.844,0.854 2.573,0.313 10 false from BKUP LP Fuse 0.448,4.802 2.688,5.125 2.24,0.323 10 false ECM 3.688,4.073 5.771,4.5 2.083,0.427 10 false to ST Relay 6.01,4.125 6.531,4.438 0.521,0.313 10 false A124 6.01,4.292 7.063,4.792 1.052,0.5 10 false Engine Stop and Start ECU 6.208,3.552 6.552,3.844 0.344,0.292 10 false STA 6.219,0.979 6.563,1.271 0.344,0.292 10 false CLL 5.948,3.417 6.292,3.708 0.344,0.292 10 false 21 5.948,0.854 6.292,1.146 0.344,0.292 10 false 17 0.552,0.979 1.042,1.271 0.49,0.292 10 false NSW 0.792,2.656 1.281,2.948 0.49,0.292 10 false P 0.781,3.24 1.271,3.531 0.49,0.292 10 false R 0.781,3.781 1.271,4.073 0.49,0.292 10 false N 0.792,4.417 1.281,4.708 0.49,0.292 10 false D 1.052,0.958 1.542,1.25 0.49,0.292 10 false A46 4.406,1.521 4.896,1.813 0.49,0.292 10 false C62 4.406,1.688 5.74,2.115 1.333,0.427 10 false Park/Neutral Position Switch Assembly 1.104,0.75 1.594,1.042 0.49,0.292 10 false 57 1.104,2.427 1.594,2.719 0.49,0.292 10 false 65 1.104,3.021 1.594,3.313 0.49,0.292 10 false 35 1.104,3.583 1.594,3.875 0.49,0.292 10 false 66 1.104,4.188 1.594,4.479 0.49,0.292 10 false 34 1.958,2.25 2.448,2.542 0.49,0.292 10 false PL 2.438,2.26 2.927,2.552 0.49,0.292 10 false RL 2.875,2.26 3.365,2.552 0.49,0.292 10 false NL 3.354,2.271 3.844,2.563 0.49,0.292 10 false DL 3.906,2.271 4.396,2.563 0.49,0.292 10 false L 2.698,1.406 3.188,1.698 0.49,0.292 10 false RB 3.885,1.396 4.375,1.688 0.49,0.292 10 false B 2.802,1.167 3.292,1.458 0.49,0.292 10 false 1 3.906,1.177 4.396,1.469 0.49,0.292 10 false 4 2.063,2.49 2.552,2.781 0.49,0.292 10 false 3 2.521,2.5 3.01,2.792 0.49,0.292 10 false 2 2.979,2.49 3.469,2.781 0.49,0.292 10 false 8 3.438,2.5 3.927,2.792 0.49,0.292 10 false 7 3.906,2.49 4.396,2.781 0.49,0.292 10 false 9 1.063,3.802 1.552,4.094 0.49,0.292 10 false C78 2.333,0.167 5.313,0.719 2.979,0.552 10 false from Ignition Assembly 1.063,2.656 1.552,2.948 0.49,0.292 10 false C78 1.073,3.229 1.563,3.521 0.49,0.292 10 false C78 1.052,4.396 1.542,4.688 0.49,0.292 10 false C78


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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

After replacing the engine stop and start ECU or airbag sensor with ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

After replacing the engine stop and start ECU assembly, perform learning of the external backup boost converter (eco run vehicle converter assembly).

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

When the ECM is replaced on a vehicle with a non-specified battery, it is necessary to perform battery type switching.

Click hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>REGISTRATION

·

Before replacing the ECM, refer to Service Bulletin (for Immobiliser System).

·

Perform Registration (VIN registration or frame number registration) after replacing the ECM.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>REGISTRATION

·

Make sure to perform Reset Memory (CVT initialization), deceleration sensor zero point calibration and CVT oil pressure calibration when replacing the ECM or the oil pressure sensor.

Click hereDrivetrain>K313 (CVT)>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION

·

Inspect the fuses for circuits related to this system before performing the following procedure.



HINT:
·

Using the GTS, 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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>FREEZE FRAME DATA

·

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 hereEngine / Hybrid System>STOP AND START>STOP AND START SYSTEM>DTC CHECK / CLEAR



PROCEDURE

1.READ VALUE USING GTS (SHIFT SW STATUS)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS 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)
50003 373 15,14,13,28

e.

In accordance with the display on the GTS, 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

Result:
Proceed to
OK
NG



OK

2.READ VALUE USING GTS (SHIFT SW STATUS (N,P RANGE))

NG

5.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
2.READ VALUE USING GTS (SHIFT SW STATUS (N,P RANGE))
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Transmission / Data List / Shift SW Status (N,P Range).

Powertrain > Transmission > Data List
Tester Display
Shift SW Status (N,P Range)
50003 373 263

e.

In accordance with the display on the GTS, read the Data List.

Powertrain > Transmission > Data List
Tester Display Measurement Item Range Normal Condition
Shift SW Status (N,P Range) Park/neutral position switch assembly status ON or OFF ON: Shift lever in P or N
OFF: Shift lever not in P or N

Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
3.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
a.

Inspect the park/neutral position switch assembly.

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

NG

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>REMOVAL


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 Entry and Start System)


e.

Disconnect the ignition or starter switch assembly connector. (w/o Smart Entry and Start System)


f.

Remove the ST relay from the No. 1 engine room relay block and No. 1 junction block assembly.


g.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
A124-21 (STA) - C62-9 (L) Always Below 1 Ω
A124-17 (CLL) - C62-4 (B) Always Below 1 Ω
A124-21 (STA) or C62-9 (L) - Body ground and other terminals Always 10 kΩ or higher
A124-17 (CLL) or C62-4 (B) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ENGINE STOP AND START ECU

Click hereEngine / Hybrid System>STOP AND START>ENGINE STOP AND START ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY
a.

Inspect the park/neutral position switch assembly.

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>INSPECTION


Result:
Proceed to
OK
NG



OK

6.CHECK HARNESS AND CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

NG

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

Click hereDrivetrain>K313 (CVT)>PARK / NEUTRAL POSITION SWITCH>REMOVAL


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.

Disconnect the engine stop and start ECU connector.


d.

Disconnect the ignition or starter switch assembly connector. (w/o Smart Entry and Start System)


e.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
C78-65 (P) - C62-3 (PL) Always Below 1 Ω
C78-35 (R) - C62-2 (RL) Always Below 1 Ω
C78-66 (N) - C62-8 (NL) Always Below 1 Ω
C78-34 (D) - C62-7 (DL) Always Below 1 Ω
A46-57 (NSW) - C62-4 (B) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR