Nissan Tiida C11. Manual - part 634

EC-1186

< COMPONENT DIAGNOSIS >

[K9K]

P1089 FUEL PUMP

P1089 FUEL PUMP

DTC Logic

INFOID:0000000001162661

DTC DETECTION LOGIC

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

EC-1136, "DTC Logic"

.

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

EC-1138, "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:0000000001162662

1.

CHECK LOW PRESSURE FUEL SUPPLY SYSTEM

Refer to 

EC-1043, "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-1044, "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-1044, "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

P1089 FUEL PUMP

EC-1187

< COMPONENT DIAGNOSIS >

[K9K]

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4.

CHECK HIGH PRESSURE SUPPLY PUMP (VOLUMETRIC CONTROL VALVE)

Refer to 

EC-1045, "BASIC INSPECTION : Special Repair Requirement [TEST 4: High Pressure Supply Pump

(Volumetric Control Valve) Check]"

.

Is the inspection result normal?

OK

>> GO TO 5.

NG

>> Replace or replace. Then GO TO 9.

5.

CHECK RAIL HIGH PRESSURE REGULATION 

Refer to 

EC-1048, "BASIC INSPECTION : Special Repair Requirement (TEST 5: Rail High Pressure Regula-

tion Check)"

.

Is the inspection result normal?

OK

>> GO TO 6.

NG

>> Replace or replace. Then GO TO 9.

6.

CHECK MAJOR LEAK IN FUEL INJECTORS/FUEL INJECTORS OPEN

Refer to 

EC-1052, "BASIC INSPECTION : Special Repair Requirement (TEST 6: Major Leak in Fuel Injectors/

Fuel Injectors Open)"

.

Is the inspection result normal?

OK

>> GO TO 7.

NG

>> Replace or replace. Then GO TO 9.

7.

CHECK INCORRECT FUEL INJECTION QUANTITY

Refer to 

EC-1053, "BASIC INSPECTION : Special Repair Requirement (TEST 7: Incorrect Fuel Injection

Quantity)"

.

Is the inspection result normal?

OK

>> GO TO 8.

NG

>> Replace or replace. Then GO TO 9.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> INSPECTIO END.

NO

>> Repair or replace. Then GO TO 9.

9.

CLEAR PRESSURE REGULATION

Perform “PRESS REG ADAPTIVE” in WORK SUPPORT mode with CONSULT-III.

>> INSPECTION END.

EC-1188

< COMPONENT DIAGNOSIS >

[K9K]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

Description

INFOID:0000000001162663

By default the valve is open when in the rest position and is actuated only when the engine is switched off; this
has a damping effect and helps to stop the engine.

DTC Logic

INFOID:0000000001162664

DTC DETECTION LOGIC

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

The DTC is declared present after the engine is started or following a load test.

• Special note:

If DTC P2101 2.DEF is displayed, first perform trouble diagnosis for DTC P0120. Refer to 

EC-1134,

"DTC Logic"

.

Diagnosis Procedure

INFOID:0000000001162665

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E15. Refer to Ground inspection in 

GI-58, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between electric throttle control actuator harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• IPDM E/R 
• Harness connectors E8, F8
• Harness for open or short between IPDM E/R and electric throttle control actuator
• Harness for open or short between ECM and electric throttle control actuator

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

4.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT-I

DTC No.

Trouble diagnosis name

Possible cause

P2101

THROTTLECONTROL MOTOR CIRCUIT
• 1.DEF: No signal
• 2.DEF:   
• 3.DEF: Values out of range
• 4.DEF: Signal incoherence

• Harness or connectors

(Throttle control motor circuit is open or 
shorted.)

• Throttle control motor

Electric throttle control actua-

tor

Ground

Voltage

Connector

Terminal

F7

1

Ground

Battery voltage

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-1189

< COMPONENT DIAGNOSIS >

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1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

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 or short to ground or short to power in harness or connectors.

5.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT-II

1.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

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

6.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT-III

1.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

2.

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

7.

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-1189, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace electric throttle control actuator.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace electric throttle control actuator.

NO

>> Repair or replace.

Component Inspection

INFOID:0000000001611036

1.

CHECK THROTTLE CONTROL MOTOR

1.

Turn ignition switch OFF.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F7

5

F11

72

Existed

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F7

2

F11

94

Existed

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F7

4

F11

90

Existed