Nissan Qashqai (2007-2010). Manual - part 469

P0812 PNP SWITCH

EC-1395

< COMPONENT DIAGNOSIS >

[K9K]

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P0812 PNP SWITCH

DTC Logic

INFOID:0000000001115100

DTC DETECTION LOGIC

NOTE:
• If DTC P0812 is displayed, the reversing light will not work.

Diagnosis Procedure

INFOID:0000000000967593

1.

CHECK CAN COMMUNICATION LINE

Refer to 

LAN-59, "CAN Communication Signal Chart"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace.

2.

CHECK PNP SWITCH

Refer to 

TM-54, "PARK/NEUTRAL POSITION (PNP) SWITCH : Component Inspection"

.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace.

3.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

DTC No.

Trouble diagnosis name

Possible cause

P0812

REVERSE GEAR SIGNAL
• 1.DEF: Values outside the levels

• Harness or connectors

(CAN communication line is open or shorted.)

• Park/neutral position switch

EC-1396

< COMPONENT DIAGNOSIS >

[K9K]

P0830 ASCD CLUTCH SWITCH

P0830 ASCD CLUTCH SWITCH

Description

INFOID:0000000000969604

ASCD clutch switch signal is applied to the ECM through the ASCD clutch switch when the clutch pedal is
depressed.

DTC Logic

INFOID:0000000001115101

DTC DETECTION LOGIC

NOTE:
• Conditions for applying the diagnostic procedure to the stored DTCs:

The DTC is declared present after a series of actions on the clutch pedal during a road test [speed greater
than 90 km/h (54 mph)].

Diagnosis Procedure

INFOID:0000000000967598

1.

CHECK ASCD CLUTCH SWITCH SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD clutch switch harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between ASCD clutch switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

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

2.

CHECK ASCD CLUTCH SWITCH INPUT SIGNAL CIRCUIT

1.

Check the continuity between ASCD clutch switch harness connector and ground.

2.

Also check harness for short to power. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK ASCD CLUTCH SWITCH

Refer to 

EC-1401, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace ASCD clutch switch.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

DTC No.

Trouble diagnosis name

Possible cause

P0830

ASCD CLUTCH SWITCH CIRCUIT
• 1.DEF: No possible classification

• Harness or connectors

(ASCD clutch switch circuit is open or shorted.)

• ASCD clutch switch

ASCD clutch switch

Ground

Voltage

Connector

Terminal

E111

1

Ground

Battery voltage

ASCD clutch switch

Ground

Continuity

Connector

Terminal

E111

2

E60

Existed

P0830 ASCD CLUTCH SWITCH

EC-1397

< COMPONENT DIAGNOSIS >

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>> INSPECTION END

Component Inspection

INFOID:0000000000967599

1.

CHECK ASCD CLUTCH SWITCH-I

1.

Turn ignition switch OFF.

2.

Disconnect ASCD clutch switch harness connector.

3.

Check the continuity between ASCD clutch switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK ASCD CLUTCH SWITCH-II

1.

Adjust ASCD clutch switch installation. Refer to 

CL-5, "Inspection and Adjustment"

.

2.

Check the continuity between ASCD clutch switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD clutch switch.

Terminals

Condition

Continuity

1 and 2

Clutch pedal

Fully released

Existed

Slightly depressed

Not existed

Terminals

Condition

Continuity

1 and 2

Clutch pedal

Fully released

Existed

Slightly depressed

Not existed

EC-1398

< COMPONENT DIAGNOSIS >

[K9K]

P1089 FUEL PUMP

P1089 FUEL PUMP

DTC Logic

INFOID:0000000001115103

DTC DETECTION LOGIC

NOTE:
• NOTE:
- If DTC P1089 is displayed with DTC P0180, first perform trouble diagnosis for DTC P0180. Refer to

EC-1347, "DTC Logic"

.

- If DTC P1089 is displayed with DTC P0190, first perform trouble diagnosis for DTC P0190. Refer to

EC-1349, "DTC Logic"

.

• Conditions for applying the diagnostic procedure to the stored DTCs:

 The DTC appears when the engine is running.

• If the DTC is present:
- Malfunction indicator (Red) lights up.

Diagnosis Procedure

INFOID:0000000000970737

1.

CHECK LOW PRESSURE FUEL SUPPLY SYSTEM

Refer to 

EC-1262, "BASIC INSPECTION : Special Repair Requirement (TEST 1: Low Pressure Fuel Supply

System Check)"

.

Is the inspection result normal?

OK

>> GO TO 2.

NG

>> Replace or replace. Then GO TO 9.

2.

CHECK INTERNAL FUEL TRANSFER PUMP

Refer to 

EC-1263, "BASIC INSPECTION : Special Repair Requirement (TEST 2: Internal Fuel Transfer Pump

Check)"

.

Is the inspection result normal?

OK

>> GO TO 3.

NG

>> Replace or replace. Then GO TO 9.

3.

CHECK HIGH PRESSURE SUPPLY PUMP (PRESSURE CONTROL VALVE)

Refer to 

EC-1263, "BASIC INSPECTION : Special Repair Requirement [TEST 3: High Pressure Supply Pump

(Pressure Control Valve) Check]"

.

Is the inspection result normal?

OK

>> GO TO 4.

NG

>> Replace or replace. Then GO TO 9.

DTC No.

Trouble diagnosis name

Possible cause

P1089

FUEL RAIL PRESSURE REGULATION FUNCTION
• 1.DEF: High pressure supply pump (Pressure control valve) closed
• 2.DEF: High pressure supply pump (Pressure control valve) open
• 3.DEF: High pressure supply pump (Volumetric control valve) open
• 4.DEF: High pressure supply pump (Volumetric control valve) closed
• 5.DEF: Component malfunction: High pressure supply pump (Pressure 

control valve or Volumetric control valve)

• 6.DEF: High pressure supply pump (Pressure control valve) oscillation 
• 7.DEF: High pressure supply pump (Volumetric control valve)) oscilla-

tion

• Harness or connectors

[High pressure supply pump (volumetric 
control valve) circuit is open or shorted.]
[High pressure supply pump (Pressure 
control valve) circuit is open or shorted.]
(Fuel rail pressure sensor circuit is open or 
shorted.)

• High pressure supply pump
• High pressure supply pump (Pressure 

control valve)

• High pressure supply pump (Volumetric 

control valve)

• Fuel line
• Fuel rail
• Fuel injector
• Fuel rail pressure sensor
• Fuel rail pressure relief valve
• Air mixture with fuel
• Lack of fuel