Nissan March K13. Manual - part 151

ECM

EC-65

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 1)]

C

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ECU DIAGNOSIS INFORMATION

ECM

Reference Value

INFOID:0000000005995470

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.
*1 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.

MAS A/F SE-B1

See 

EC-116, "Diagnosis Procedure"

.

B/FUEL SCHDL

See 

EC-116, "Diagnosis Procedure"

.

A/F ALPHA-B1

See 

EC-116, "Diagnosis Procedure"

.

COOLAN TEMP/S

• Engine: After warming up

More than 70

°

C (158

°

F)

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)

• 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

AIR COND SIG

• Engine: After warming up, idle 

the engine

Air conditioner switch: OFF

Off

Air conditioner switch: ON
(Compressor operates.)

On

EC-66

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 1)]

ECM

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

12

°

BTDC

2,000 rpm

25

°

 - 45

°

BTDC

CAL/LD VALUE

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

Idle

10% - 35%

2,500 rpm

10% - 35%

MASS AIRFLOW

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

Idle

1.0 - 4.0 g·m/s

2,500 rpm

2.0 - 10.0 g·m/s

PURG VOL C/V

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

Idle
(Accelerator pedal is not depressed even 
slightly, after engine starting)

0%

2,000 rpm

0% - 50%

EGR VOL CON/V

• Engine: After warming up
•  Shift lever: P or N
• Air conditioner switch: OFF
• No  load

Idle

0 - 1 step

Revving engine from idle up to 3,000 rpm 
quickly

0 - 33 step

INT/V TIM(B1)

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

Idle

−

5

°

 - 5

°

CA

When revving engine up to 2,000rpm 
Quickly

Approx. 0

°

 - 40

°

CA

INT/V SOL(B1)

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

Idle

0% - 2%

When revving engine up to 2,000rpm 
Quickly

Approx. 0% - 90%

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

Monitor Item

Condition

Values/Status

ECM

EC-67

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 1)]

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*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM inter-
nally. Thus, they differ from ECM terminals voltage signal.
*2: Although the state is indicated as "LOW," the cooling fan operates at high speeds.

COOLING FAN 

• Engine: After warning up, idle the 

engine

• Air conditioner switch: OFF

Engine coolant temperature is 98

°

C 

(208

°

F) or less

Off

Engine coolant temperature is between 
98

°

C (208

°

F) and 99

°

C (210

°

F)

LOW

*2

Engine coolant temperature is 100

°

C 

(212

°

F) or more

HIGH

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

• Engine speed: Above 3,900 rpm

OFF

ALT DUTY SIG

• Power generation voltage variable control: Operating

ON

• Power generation voltage variable control: Not operating

OFF

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

TRVL AFTER MIL

• Ignition switch: ON

Vehicle has traveled after MIL has turned 
ON.

0 - 65,535 km
(0 - 40,723 miles)

A/F S1 HTR(B1)

• Engine: After warming up, idle the engine

(More than 140 seconds after starting engine)

4 - 100%

ALT DUTY

• Engine: Idle

0 - 80%

BAT CUR SEN

• Engine speed: Idle

• Battery: Fuel charged

*3

• Selector lever: Neutral
• Air conditioner switch: OFF
• No  load

Approx 2,500 - 3,500 mV

A/F ADJ-B1

• Engine: Running

-0.330 - 0.330

P/N POSI SW

• Ignition switch: ON

Selector lever: Neutral

ON

Selector lever: Except above

OFF

INT/A TEMP SE

• Ignition switch: ON

Indicates intake air tempera-
ture.

AC PRESS SEN

• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 - 4.0 V

EGR TEMP SEN

• Engine: After warming up

Less than 4.8 V

FPCM

• Ignition switch: OFF

Off

• For 1 seconds after turning ignition switch: ON

Low

• Engine: Idle
• Engine coolant temperature: More than 10

°

C (50

°

F)

Mid

• Engine: Cranking

Hi

THRTL STK CNT B1

• Ignition switch: ON

A value corresponding to the 
number of cloggings in the 
throttle valve closed position

HO2 S2 DIAG2(B1)

NOTE:
The item is indicated, but not used.

—

A/F SEN1 DIAG2 
(B1)

NOTE:
The item is indicated, but not used.

—

Monitor Item

Condition

Values/Status

EC-68

< ECU DIAGNOSIS INFORMATION >

[HR12DE (TYPE 1)]

ECM

*3: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to 

PG-130, "How to

Handle Battery"

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:
• ECM is located in the engine room left side near battery. 
• When disconnecting ECM harness connector (A), loosen (C) it with

levers as far as they will go as shown in the figure.

- ECM  (1)
- Fasten (B)
• Connect a break-out box and harness adapter between the ECM

and ECM harness connector.

- Use extreme care not to touch 2 pins at one time.
- Data is for comparison and may not be exact.
• Specification data are reference values and are measured

between each terminals.

• Pulse signal is measured by CONSULT-III.

PBIA9221J

JMBIA0029ZZ

Terminal No.

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

1

(L)

107

(B)

Throttle control motor 
(Open)

Output

[Ignition switch: ON]
• Engine stopped
• Shift lever: 1st position
• Accelerator pedal: Fully depressed

2 V

2

(SB)

107

(B)

Throttle control motor power 
supply

Input

[Ignition switch: ON]

BATTERY VOLTAGE
(11 - 14 V)

3

(G)

107

(B)

A/F sensor 1 heater

Output

[Engine is running]
• Warm-up condition
• Idle speed

(More than 140 seconds after start-
ing engine)

2.9 - 8.8 V

JMBIA0213GB

JMBIA0030GB