Nissan Teana J32. Manual - part 427

EC-246

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

P0850 PNP SWITCH

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES-1 >> VQ35DE engine: Go to 

EC-246, "Diagnosis Procedure (VQ35DE engine)"

.

YES-2 >> VQ25DE engine: Go to 

EC-247, "Diagnosis Procedure (VQ25DE engine)"

.

NO

>> INSPECTION END

5.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-246, "Component Function Check"

.

NOTE:
Use component function check to check the overall function of the park/neutral position (PNP) signal circuit.
During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?

YES

>> INSPECTION END

NO-1

>> VQ35DE engine: Go to 

EC-246, "Diagnosis Procedure (VQ35DE engine)"

.

NO-2

>> VQ25DE engine: Go to 

EC-247, "Diagnosis Procedure (VQ25DE engine)"

.

Component Function Check

INFOID:0000000003856712

1.

PERFORM COMPONENT FUNCTION CHECK

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO-1

>> VQ35DE engine: Go to 

EC-246, "Diagnosis Procedure (VQ35DE engine)"

.

NO-2

>> VQ25DE engine: Go to 

EC-247, "Diagnosis Procedure (VQ25DE engine)"

.

Diagnosis Procedure (VQ35DE engine)

INFOID:0000000003856713

1.

CHECK DTC WITH TCM

Refer to 

EC-389, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning part.

2.

CHECK STARTING SYSTEM

Turn ignition switch OFF, then turn it to START.

Does starter motor operate?

YES

>> GO TO 3.

NO

>> Refer to 

BCS-16, "COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)"

.

3.

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I

1.

Turn ignition switch OFF.

2.

Disconnect TCM harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between TCM harness connector and IPDM E/R harness connector.

B/FUEL SCHDL

4.0 - 31.8 msec

VHCL SPEED SE

More than 64 km/h (40 mph)

Selector lever

Suitable position

ECM

Ground

Condition

Voltage

Connector

Terminal

E16

102

Ground

Selector lever

P or N

Battery voltage

Except above

Approx. 0 V

P0850 PNP SWITCH

EC-247

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

C

D

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EC

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5.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

4.

CHECK PNP SIGNAL CIRCUIT FOR OPEN AND SHORT-II

1.

Disconnect IPDM E/R harness connectors.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-35, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

Diagnosis Procedure (VQ25DE engine)

INFOID:0000000003891373

1.

CHECK DTC WITH TCM

Refer to 

EC-389, "DTC Index"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning part.

2.

CHECK STARTING SYSTEM

Turn ignition switch OFF, then turn it to START.

Does starter motor operate?

YES

>> GO TO 3.

NO

>> Refer to 

BCS-16, "COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)"

.

3.

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I

1.

Turn ignition switch OFF and then ON.

2.

Check the voltage between Park/neutral position switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

TCM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F23

20

F12

72

Existed

ECM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E16

102

E10

30

Existed

Park/neutral position switch

Ground

Voltage

Connector

Terminal

F57

1

Ground

Battery voltage

EC-248

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

P0850 PNP SWITCH

Check the following.
• IPDM E/R connector F12
• 10A fuse (No. 42)
• Harness for open or short between Park/neutral position switch and fuse

>> Repair open circuit, short to ground or short to power in harness or connectors.

5.

CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I

1.

Turn ignition switch OFF.

2.

Disconnect Park/neutral position switch harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between Park/neutral position switch and IPDM E/R harness connector.

5.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

6.

CHECK PNP SIGNAL CIRCUIT FOR OPEN AND SHORT-II

1.

Disconnect IPDM E/R harness connectors.

2.

Disconnect ECM harness connector.

3.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

7.

CHECK PARK/NEUTRAL POSITION SWITCH

Refer to 

TM-214, "Component Inspection (Park/Neutral Position Switch)"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace Park/neutral position switch.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-35, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

Park/neutral position switch

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F57

2

F12

72

Existed

ECM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E16

102

E10

30

Existed

P1212 TCS COMMUNICATION LINE

EC-249

< COMPONENT DIAGNOSIS >

[VQ25DE, VQ35DE]

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EC

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P1212 TCS COMMUNICATION LINE

Description

INFOID:0000000003856715

This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.

DTC Logic

INFOID:0000000003856716

DTC DETECTION LOGIC

NOTE:
• If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC

U1000, U1001. Refer to 

EC-135, "DTC Logic"

.

• If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-242, "DTC Logic"

.

Freeze frame data is not stored in the ECM for this self-diagnosis.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for at least 10 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-249, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003856717

Go to 

BRC-62, "Work Flow"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1212

TCS communication line

ECM cannot receive the information from 
“ABS actuator and electric unit (control 
unit)” continuously.

• Harness or connectors

(The CAN communication line is open or short-
ed.)

• ABS actuator and electric unit (control unit)
• Dead (Weak) battery