Nissan March K13. Manual - part 223

DIAGNOSIS SYSTEM (ECM)

EC-353

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 2)]

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

BRAKE SW

ON/OFF

• Indicates [ON/OFF] condition from the stop lamp 

switch signal.

INJ PULSE-B1

msec

• Indicates the actual fuel injection pulse width 

compensated by ECM according to the input sig-
nals.

• When the engine is stopped, a certain 

computed value is indicated.

IGN TIMING

BTDC

• Indicates the ignition timing computed by ECM 

according to the input signals.

• When the engine is stopped, a certain 

value is indicated.

PURG VOL C/V

%

• Indicates the EVAP canister purge volume con-

trol solenoid valve control value computed by the 
ECM according to the input signals.

• The opening becomes larger as the value in-

creases.

AIR COND RLY

ON/OFF

• The air conditioner relay control condition (deter-

mined by ECM according to the input signals) is 
indicated.

FUEL PUMP RLY

ON/OFF

• Indicates the fuel pump relay control condition 

determined by ECM according to the input sig-
nals.

THRTL RELAY

ON/OFF

• Indicates the throttle control motor relay control 

condition determined by the ECM according to 
the input signals.

COOLING FAN

HI/LOW/OFF

• Indicates the condition of the cooling fan (deter-

mined by ECM according to the input signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop

HO2S1 HTR (B1)

ON/OFF

• Indicates [ON/OFF] condition of heated oxygen 

sensor 1 heater determined by ECM according to 
the input signals.

HO2S2 HTR (B1)

ON/OFF

• Indicates [ON/OFF] condition of heated oxygen 

sensor 2 heater determined by ECM according to 
the input signals.

VEHICLE SPEED

km/h or mph

• The vehicle speed computed from the vehicle 

speed signal sent from TCM is displayed.

IDL A/V LEARN

YET/CMPLT

• Displays the condition of Idle Air Volume Learn-

ing
YET: Idle air volume learning has not been per-
formed yet.
CMPLT: Idle air volume learning has already 
been performed successfully.

P/N POSI SW

ON/OFF

• Indicates [ON/OFF] condition from the park/neu-

tral position (PNP) switch signal.

INT/A TEMP SE

°

C or 

°

F

• The intake air temperature (determined by the 

signal voltage of the intake air temperature sen-
sor) is indicated.

TRVL AFTER MIL

km or mile

• Distance traveled while MIL is activated.

AC PRESS SEN

V

• The signal voltage from the refrigerant pressure 

sensor is displayed.

TURBO BST SEN

V

• The signal voltage of the manifold absolute pres-

sure sensor is displayed.

O2SEN HTR DTY

%

• Heated oxygen sensor 1 heater control value 

computed by ECM according to the input signals.

• The current flow to the heater becomes larger as 

the value increases.

Monitored item

Unit

Description

Remarks

EC-354

< SYSTEM DESCRIPTION >

[HR12DE (TYPE 2)]

DIAGNOSIS SYSTEM (ECM)

ACTIVE TEST MODE

Test Item

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

WORK SUPPORT MODE

Work Item

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

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

ENG COOLANT 
TEMP

• Engine: Return to the original 

trouble condition

• Change the engine coolant tem-

perature using CONSULT-III.

If trouble symptom disappears, see 
CHECK ITEM.

• Harness and connectors
• Engine coolant temperature 

sensor

• Fuel injector

FUEL INJECTION

• Engine: Return to the original 

trouble condition

• Change the amount of fuel injec-

tion using CONSULT-III.

If trouble symptom disappears, see 
CHECK ITEM.

• Harness and connectors
• Fuel injector
• Heated oxygen sensor 1

PURG VOL CONT/V

• Engine: After warming up, run en-

gine at 1,500 rpm.

• Change the EVAP canister purge 

volume control solenoid valve 
opening percent using CON-
SULT-III.

Engine speed changes according 
to the opening percent.

• Harness and connectors
• Solenoid valve

FUEL PUMP RELAY

• Ignition switch: ON (Engine 

stopped)

• Turn the fuel pump relay “ON” 

and “OFF” using CONSULT-III 
and listen to operating sound.

Fuel pump relay makes the operat-
ing sound.

• Harness and connectors
• Fuel pump relay

IGNITION TIMING

• Engine: Return to the original 

trouble condition

• Timing light: Set
• Retard the ignition timing using 

CONSULT-III.

If trouble symptom disappears, see 
CHECK ITEM.

• Perform Idle Air Volume Learn-

ing.

COOLING FAN*

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

and “OFF” CONSULT-III.

Cooling fan moves and stops.

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

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-III.

Engine runs rough or dies.

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

WORK ITEM

CONDITION

USAGE

FUEL PRESSURE RELEASE

• FUEL PUMP WILL STOP BY TOUCHING “START” DUR-

ING 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 RETURNS TO THE ORIGINAL COEF-
FICIENT.

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 tim-
ing

ECM

EC-355

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 2)]

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ECU DIAGNOSIS INFORMATION

ECM

Reference Value

INFOID:0000000005888308

VALUES ON THE DIAGNOSIS TOOL

Remarks:
• Specification data are reference values.
• Specification data are output/input values which are detected or supplied by the ECM at the connector.
*Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the
specification data in spite of the ignition timing not being adjusted to the specification data. this IGN TIMING
monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and
other ignition timing related sensors.

Monitor Item

Condition

Values/Status

ENG SPEED

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

Almost the same speed as 
the tachometer indication.

B/FUEL SCHDL

See 

EC-388, "Description"

.

A/F ALPHA-B1

See 

EC-388, "Description"

.

COOLAN TEMP/S

• Engine: After warming up

More than 70

°

C (158F)

HO2S1 (B1)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

0 - 0.3 V 

←→

 Approx. 0.6 - 

1.0 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

HO2S1 MNTR (B1)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm

LEAN 

←→

 RICH

Changes more than 5 times 
during 10 seconds

HO2S2 MNTR (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

LEAN 

←→

 RICH

VHCL SPEED SE

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

dication.

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

EC-356

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 2)]

ECM

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

LOAD SIGNAL

• Ignition switch: ON

Rear window defogger switch: ON
and/or Lighting switch: 2nd position

On

Rear window defogger switch and lighting 
switch: OFF

Off

IGNITION SW

• Ignition switch: ON 

→

 OFF 

→

 ON

On 

→

 Off 

→

 On

HEATER FAN SW

• Engine: After warming up, idle 

the engine

Heater fan switch: ON

On

Heater fan switch: OFF

Off

BRAKE SW

• Ignition switch: ON

Brake pedal: Fully released

Off

Brake pedal: Slightly depressed

On

INJ PULSE-B1

• Engine: After warming up
• Shift lever: Neutral 
• Air conditioner switch: OFF
• No  load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

IGN TIMING

• Engine: After warming up
• Shift lever: Neutral 
• Air conditioner switch: OFF
• No  load

Idle

1

°

 - 11

°

BTDC

2,000 rpm

25

°

 - 45

°

BTDC

PURG VOL C/V

• Engine: After warming up
• Shift lever: Neutral
• Air conditioner switch: OFF
• No  load

Idle

0%

2,000 rpm

0% - 50%

AIR COND RLY

• Engine: After warming up, idle 

the engine

Air conditioner switch: OFF

Off

Air conditioner switch: ON
(Compressor operates)

On

FUEL PUMP RLY

• For 1 seconds after turning ignition switch: ON
• Engine running or cranking

On

• Except above

Off

THRTL RELAY

• Ignition switch: ON

On

COOLING FAN 

• Engine: After warning up, idle the 

engine

• Air conditioner switch: OFF

Engine coolant temperature is 95

°

C 

(203

°

F) or less

Off

Engine coolant temperature is between 
95

°

C (203

°

F) and 99

°

C (210

°

F)

LOW

Engine coolant temperature is 100

°

C 

(212

°

F) or more

HIGH

HO2S1 HTR (B1)

• Engine: After warming up
• Engine speed: Below 3,600 rpm

On

• Engine speed: Above 3,600 rpm

Off

HO2S2 HTR (B1)

• Engine speed: Below 3,900 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at 

idle for 1 minute under no load

On

VEHICLE SPEED

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

dication.

Almost the same speed as 
speedometer indication

IDL A/V LEARN

• Engine: running

Idle air volume learning has not been per-
formed yet.

YET

Idle air volume learning has already been 
performed successfully.

CMPLT

Monitor Item

Condition

Values/Status