Nissan Note E12. Manual - part 180

DIAGNOSIS SYSTEM (ECM)

EC-59

< SYSTEM DESCRIPTION >

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NOTE:

Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

WORK SUPPORT MODE

Work Item

LO SPEED CUT

NON/CUT

Indicates the vehicle cruise 
condition.
NON: Vehicle speed is main-
tained at the ASCD set speed.
CUT: Vehicle speed de-
creased to excessively low, 
and ASCD operation is cut off.

AT OD MONITOR

ON/OFF

Indicates [On/Off] condition of 
CVT O/D according to the in-
put signal from the TCM.

AT OD CANCEL

ON/OFF

Indicates [On/Off] condition of 
CVT O/D cancel request sig-
nal.

CRUISE LAMP

ON/OFF

Indicates [ON/OFF] condition 
of CRUISE lamp determined 
by the ECM according to the 
input signals.

SET LAMP

ON/OFF

Indicates [ON/OFF] condition 
of SET lamp determined by 
the ECM according to the in-
put signals.

KICKDOWN POS

ON/OFF

Indicates [ON/OFF] condition 
of kickdown determined by 
the ECM according to the in-
put signals.

CLUTCH P/P SW

ON/OFF

Indicates [ON/OFF] condition 
clutch pedal position switch 
signals.

Models other than M/T mod-
els always display OFF.

VTC DTY EX B1

%

• The control value of the ex-

haust valve timing control 
solenoid valve (determined 
by ECM according to the in-
put signals) is indicated.

• The advance angle be-

comes larger as the value 
increases.

THRTL STK CNT B1

—

Not used.

EOP SENSOR

mV

The signal voltage of EOP 
sensor is displayed.

HO2 S2 DIAG2(B1)

INCMP/CMPLT

NOTE:
The item is indicated, but not 
used.

A/F SEN1 DIAG2(B1)

INCMP/CMPLT

NOTE:
The item is indicated, but not 
used.

Monitored item

Unit

Monitor Item Selection

Description

Remarks

MAIN

SIGNALS

ECU INPUT

SIGNALS

EC-60

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (ECM)

*: This function is not necessary in the usual service procedure.

ACTIVE TEST MODE

Test Item

*: Leaving cooling fan OFF with CONSULT while engine is running may cause the engine to overheat.

DTC WORK SUPPORT MODE

WORK ITEM

CONDITION

USAGE

FUEL PRESSURE RELEASE

Fuel pump will stop by touching “START” during idling.
Crank a few times after engine stalls.

When releasing fuel pressure from fuel line

IDLE AIR VOL LEARN

The idle air volume that keeps the engine within the 
specified range is memorized in ECM.

When learning the idle air volume

SELF-LEARNING CONT

The coefficient of self-learning control mixture ratio re-
turns to the original coefficient.

When clearing mixture ratio self-learning 
value

TARGET IDLE RPM ADJ*

Idle condition

When setting target idle speed

TARGET IGN TIM ADJ*

Idle condition

When adjusting target ignition timing

CLSD THL POS LEARN

Ignition on and engine stopped.

When learning throttle valve closed position

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

ENG COOLANT 
TEMP

• Engine: Return to the original trouble con-

dition

• Change the engine coolant temperature 

using CONSULT.

If trouble symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Engine coolant temperature 

sensor

• Fuel injector

FUEL INJECTION

• Engine: Return to the original trouble con-

dition

• Change the amount of fuel injection using 

CONSULT.

If trouble symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1

PURG VOL CONT/V

• Engine: After warming up, run engine at 

1,500 rpm.

• Change the EVAP canister purge volume 

control solenoid valve opening percent us-
ing CONSULT.

Engine speed changes ac-
cording to the opening per-
cent.

• Harness and connectors
• Solenoid valve

FUEL PUMP RELAY

• Ignition switch: ON (Engine stopped)
• Turn the fuel pump relay “ON” and “OFF” 

using CONSULT and listen to operating 
sound.

Fuel pump relay makes the 
operating sound.

• Harness and connectors
• Fuel  pump  relay

COOLING FAN*

• Ignition switch: ON
• Turn the cooling fan “LOW”, “HI” and “OFF” 

CONSULT.

Cooling fan moves and stops.

• Harness and connectors
• IPDM E/R (Cooling fan relay)
• Cooling fan motor

IGNITION TIMING

• Engine: Return to the original trouble con-

dition

• Timing light: Set
• Retard the ignition timing using CONSULT.

If trouble symptom disap-
pears, see CHECK ITEM.

Perform Idle Air Volume Learn-
ing.

POWER BALANCE

• Engine: After warming up, idle the engine.
• A/C switch OFF
• Shift lever: Neutral 
• Cut off each fuel injector signal one at a 

time using CONSULT.

Engine runs rough or dies.

• Harness and connectors
• Compression
• Fuel injector
• Power transistor
• Spark plug
• Ignition coil

INT V/T ASSIGN 
ANGLE

• Engine: Return to the original non-stan-

dard condition

• Change intake valve timing using CON-

SULT.

If malfunctioning symptom 
disappears, see CHECK 
ITEM.

• Harness and connectors
• Intake valve timing control so-

lenoid valve

EXH V/T ASSIGN 
ANGLE

• Engine: Return to the original non-stan-

dard condition

• Change exhaust valve timing using CON-

SULT.

If malfunctioning symptom 
disappears, see CHECK 
ITEM.

• Harness and connectors
• Exhaust valve timing control 

solenoid valve

DIAGNOSIS SYSTEM (ECM)

EC-61

< SYSTEM DESCRIPTION >

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Test Item

SRT & P-DTC MODE

SRT STATUS Mode

For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT screen; for items whose SRT

codes are not set, “INCMP” is displayed.

SRT WORK SUPPORT Mode

This mode enables a technician to drive a vehicle to set the SRT while monitoring the SRT status.

Test mode

Test item

Corresponding DTC No.

Reference page

HO2S2

HO2S2 (B1) P1146

P0138

EC-188, "DTC Logic"

HO2S2 (B1) P1147

P0137

EC-183, "DTC Logic"

HO2S2 (B1) P0139

P0139

EC-196, "DTC Logic"

A/F SEN1

A/F SEN1 (B1) P1278/P1279

P0133

EC-179, "DTC Logic"

A/F SEN1 (B1) P1276

P0130

EC-170, "DTC Logic"

EC-62

< ECU DIAGNOSIS INFORMATION >

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ECM

ECU DIAGNOSIS INFORMATION

ECM

Reference Value

INFOID:0000000009022472

VALUES ON THE DIAGNOSIS TOOL

NOTE:

• The following table includes information (items) inapplicable to this vehicle. For information (items) applica-

ble to this vehicle, refer to CONSULT display items.

• Numerical values in the following table are reference values.

• These values are input/output values that ECM receives/transmits and may differ from actual operations.

Example: The ignition timing shown by the timing light may differ from the ignition timing displayed on the

data monitor.

This occurs because the timing light shows a value calculated by ECM according to signals received from

the camshaft position sensor and other sensors related to ignition timing.

• For outlines of following items, refer to 

EC-53, "CONSULT Function"

.

Monitor Item

Condition

Values/Status

ENG SPEED

• Run engine and compare CONSULT value with the tachometer indication.

Almost the same speed as 
the tachometer indication.

MAS A/F SE-B1

See 

EC-129, "Description"

.

B/FUEL SCHDL

See 

EC-129, "Description"

.

A/F ALPHA-B1

See 

EC-129, "Description"

.

COOLAN TEMP/S

• Engine: After warming up

More than 70

°C (158F)

A/F SEN1 (B1)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

Fluctuates around 2.2 V

HO2S2 (B1)

• Revving engine from idle up to 3,000 rpm quickly after the following conditions 

are met.

- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at 

idle for 1 minute under no load

0 - 0.3 V 

←→ Approx. 0.6 - 

1.0 V

HO2S2 MNTR (B1)

LEAN 

←→ RICH

VHCL SPEED SE

• Turn drive wheels and compare CONSULT value with the speedometer indi-

cation.

Almost the same speed as 
speedometer indication

BATTERY VOLT

• Ignition switch: ON (Engine stopped)

11 - 14 V

ACCEL SEN 1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.6 - 0.9 V

Accelerator pedal: Fully depressed

4.0 - 4.8 V

ACCEL SEN 2

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.6 - 0.9 V

Accelerator pedal: Fully depressed

3.9 - 4.8 V

TP SEN 1-B1

• Ignition switch: ON

(Engine stopped)

• Shift lever: 1st

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

TP SEN 2-B1

• Ignition switch: ON

(Engine stopped)

• Shift  lever:1st

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

START SIGNAL

• Ignition switch: ON 

→ START → ON

OFF 

→ ON → OFF

CLSD THL POS

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

ON

Accelerator pedal: Slightly depressed

OFF

AIR COND SIG

• Engine: After warming up, idle 

the engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates.)

ON

PW/ST SIGNAL

• Engine: After warming up, idle 

the engine

Steering wheel: Not being turned

OFF

Steering wheel: Being turned

ON