Nissan Qashqai (2007-2010). Manual - part 1334

B2085 LOWBEAM SIG OPEN LINE

EXL-41

< COMPONENT DIAGNOSIS >

[XENON TYPE]

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B2085 LOWBEAM SIG OPEN LINE

Description

INFOID:0000000001089019

• Auto levelizer control unit inputs tail lamp signal from IPDM E/R.
• Auto levelizer control unit always outputs the voltage to detect the DTC.

DTC Logic

INFOID:0000000001089020

DTC DETECTION LOGIC

[B2085] LOWBEAM SIG OPEN LINE

DTC CONFIRMATION PROCEDURE

1.

ERASE DTC

1.

Turn the headlamp (LO) ON.

2.

Connect the CONSULT-III.

3.

Erase DTC memory of HEADLAMP LEVELIZER with self-diagnosis of CONSULT-III.

>> GO TO 2.

2.

DTC CONFIRMATION

Perform self-diagnosis of CONSULT-III.

Is B2085 detected?

YES

>> Refer to 

EXL-41, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000001089021

1.

CHECK TAIL LAMP SIGNAL INPUT WITH CONSULT-III

1.

Turn the headlamp (LO) ON.

2.

Connect the CONSULT-III.

3.

Select "LIGHT SIGNAL" of HEADLAMP LEVELIZER data monitor item.

4.

Check the monitor status.

Is the measurement value normal?

YES

>> Replace the auto levelizer control unit.

NO

>> GO TO 2.

2.

CHECK TAIL LAMP SIGNAL INPUT

1.

Turn ignition switch OFF.

2.

Disconnect the auto levelizer control unit connector.

3.

Turn ignition switch ON.

4.

With operating the lighting switch, check the voltage between the auto levelizer control unit harness con-
nector and the ground.

DTC detection condition

DTC erase conditions

Possible causes

Tail lamp signal is 6 V or less with tail lamp ON, or 2 V or more with 
tail lamp OFF, for 1.5 seconds or more.

Headlamp (LO) OFF

• Harness or connector
• IPDM E/R
• Auto levelizer control unit

Monitor item

Condition

Standard value

(Approx.)

LIGHT SIGNAL

Headlamp (LO) ON

6 V or more

EXL-42

< COMPONENT DIAGNOSIS >

[XENON TYPE]

B2085 LOWBEAM SIG OPEN LINE

Is the measurement value normal?

YES

>> Replace the auto levelizer control unit.

NO

>> Repair the harnesses between auto levelizer control unit and IPDM E/R.

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

Auto levelizer control unit

Ground

Connector

Terminal

Lighting switch

B43

6

OFF

0 V

1ST

Battery voltage

B2086 FRQ. OVER LIMIT

EXL-43

< COMPONENT DIAGNOSIS >

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B2086 FRQ. OVER LIMIT

Description

INFOID:0000000001089022

Auto levelizer control unit inputs vehicle speed signal (8-pulse) from combination meter.

DTC Logic

INFOID:0000000001089023

DTC DETECTION LOGIC

[B2086] FRQ. OVER LIMIT

DTC CONFIRMATION PROCEDURE

1.

ERASE DTC

1.

Turn the headlamp (LO) ON.

2.

Connect the CONSULT-III.

3.

Erase DTC memory of HEADLAMP LEVELIZER with self-diagnosis of CONSULT-III.

>> GO TO 2.

2.

DTC CONFIRMATION

1.

Start the engine.

2.

Drive the vehicle at 40 km/h.

3.

Perform self-diagnosis of CONSULT-III.

Is B2086 detected?

YES

>> Refer to 

EXL-43, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-39, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000001089024

1.

CHECK VEHICLE SPEED SIGNAL INPUT WITH CONSULT-III

1.

Turn the headlamp (LO) ON.

2.

Connect the CONSULT-III.

3.

Select "VEHICLE SPEED SIGNAL" of HEADLAMP LEVELIZER data monitor item.

4.

While driving at 40 km/h, check the monitor status.

Is the measurement value normal?

YES

>> Replace the auto levelizer control unit.

NO

>> GO TO 2.

2.

CHECK VEHICLE SPEED SIGNAL INPUT

1.

Turn ignition switch OFF.

2.

Disconnect the auto levelizer control unit connector.

3.

Turn ignition switch ON.

4.

While driving at 40 km/h, check the voltage between the auto levelizer control unit harness connector and
the ground.

DTC detection condition

DTC erase conditions

Possible causes

The vehicle speed is 340 km/h or more for 1.5 seconds or more.

Headlamp (LO) OFF

• Harness or connector
• Auto levelizer control unit

Monitor item

Condition

Standard value

(Approx.)

VEHICLE SPEED SIGNAL

While driving at 40 km/h

40 km/h

EXL-44

< COMPONENT DIAGNOSIS >

[XENON TYPE]

B2086 FRQ. OVER LIMIT

Is the measurement value normal?

YES

>> Replace the auto levelizer control unit.

NO

>> Repair the harnesses between auto levelizer control unit and combination meter.

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

Auto levelizer control unit

Ground

Connector

Terminal

B43

4

While driving 

at 40 km/h

PKIA1935E