Nissan Teana J32. Manual - part 1114

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< FUNCTION DIAGNOSIS >

STARTING SYSTEM

VQ25DE : Component Description

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VQ35DE

VQ35DE : System Diagram

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VQ35DE : System Description

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The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts. 

1.

Park/neutral position switch

2.

Starter motor

3.

IPDM E/R

A.

CVT assembly

B.

Engine room dash panel (LH)

Component part

Description

Park/neutral position switch

Park/neutral position switch supplies power to the starter relay in-
side IPDM E/R when the selector lever is shifted to the P or N po-
sition.

IPDM E/R

CPU inside IPDM E/R controls the starter relay. Ignition relay in-
side IPDM E/R supplies power to the park/neutral position switch 
when ignition switch is ON or START.

Starter motor

The starter motor plunger closes and the motor is supplied with 
battery power, which in turn cranks the engine, when the “S” ter-
minal is supplied with electric power.

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STARTING SYSTEM

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< FUNCTION DIAGNOSIS >

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VQ35DE : Component Parts Location

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VQ35DE : Component Description

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1.

Starter motor

2.

BCM

3.

TCM

4.

IPDM E/R

A.

Converter housing

B.

Behind the combination meter

C.

Engine room dash panel (LH)

JPBIA1756ZZ

Component part

Description

TCM

TCM supplies power to the starter relay and starter control relay 
inside IPDM E/R when the selector lever is shifted to the P or N 
position.

BCM

BCM controls the starter relay inside IPDM E/R.

IPDM E/R

CPU inside IPDM E/R controls the starter control relay.

Starter motor

The starter motor plunger closes and the motor is supplied with 
battery power, which in turn cranks the engine, when the “S” ter-
minal is supplied with electric power.

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< COMPONENT DIAGNOSIS >

B TERMINAL CIRCUIT

COMPONENT DIAGNOSIS

B TERMINAL CIRCUIT

Description

INFOID:0000000003860425

The “B” terminal is constantly supplied with battery power.

Diagnosis Procedure

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CAUTION:

Perform diagnosis under the condition that engine cannot start by the following procedure.
1.

Remove fuel pump fuse.

2.

Crank or start the engine (where possible) until the fuel pressure is released.

1.

CHECK “B” TERMINAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Check that starter motor “B” terminal connection is clean and tight.

3.

Check voltage between starter motor “B” terminal and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check harness between battery and starter motor for open circuit.

2.

CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)

1.

Shift the selector lever to “P” or “N” position.

2.

Check voltage between battery positive terminal and starter motor “B” terminal.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between the battery and the starter motor for poor continuity.

3.

CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)

1.

Shift the selector lever to “P” or “N” position.

2.

Check voltage between starter motor case and battery negative terminal.

Is the inspection result normal?

YES

>> “B” terminal circuit is OK. Further inspection is necessary. Refer to 

STR-2, "Work Flow"

.

NO

>> Check the starter motor case and ground for poor continuity.

Terminals

Voltage (Approx.)

(+)

(–)

Starter motor “B” terminal

Terminal

F49 (VQ25DE)
F10 (VQ35DE)

2 Ground

Battery 

voltage

Terminals

Condition

Voltage (Approx.)

(+)

(–)

Starter motor

“B” terminal

Terminal

Battery positive terminal

F49 (VQ25DE)
F10 (VQ35DE)

2 

When the ignition switch is 

in START position

Less than

 0.5 V

Terminals

Condition

Voltage (Approx.)

(+)

(–)

Starter motor case

Battery negative terminal

When the ignition switch is in 

START position

Less than 0.2 V

S TERMINAL CIRCUIT

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< COMPONENT DIAGNOSIS >

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S TERMINAL CIRCUIT

Description

INFOID:0000000003860427

The starter motor magnetic switch is supplied with power when the ignition switch is turned to START with the
selector lever “P” or “N”.

Diagnosis Procedure

INFOID:0000000003860428

CAUTION:

Perform diagnosis under the condition that engine cannot start by the following procedure.
1.

Remove fuel pump fuse.

2.

Crank or start the engine (where possible) until the fuel pressure is released.

1.

CHECK “S” CONNECTOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect “S” terminal.

3.

Shift the selector lever to “P” or “N” position.

4.

Check voltage between starter motor harness connector and ground.

Is the inspection result normal?

YES

>> “S” terminal circuit is OK. Further inspection is necessary. Refer to 

STR-2, "Work Flow"

.

NO

>> GO TO 2.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect IPDM E/R connector.

2.

Check continuity between starter motor “S” terminal and IPDM E/R harness connector.

Is the inspection result normal?

YES

>> Inspect IPDM E/R and power supply circuit. Refer to 

STR-2, "Work Flow"

.

NO

>> Repair the harness.

Terminals

Condition

Voltage (Approx.)

(+)

(–)

Starter motor harness 

connector

Terminal

F50 (VQ25DE)
F47 (VQ35DE)

1 Ground

When the ignition switch 

is in START position

Battery voltage

Starter motor “S” terminal

IPDM E/R harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

F50 (VQ25DE)
F47 (VQ35DE)

1

E10

80

Existed