Nissan Frontier. Manual — part 611

DIAGNOSIS SYSTEM (ECM)

EC-1015

< SYSTEM DESCRIPTION >

[VQ40DE FOR MEXICO]

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

DTC WORK SUPPORT MODE

Test Item

TEST ITEM

CONDITION

JUDGEMENT

CHECK ITEM (REMEDY)

FUEL INJEC-
TION

• Engine: Return to the original

non-standard condition

• Change the amount of fuel injec-

tion using CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

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

IGNITION TIM-
ING

• Engine: Return to the original

non-standard condition

• Timing light: Set
• Retard the ignition timing using

CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Perform Idle Air Volume Learning.

POWER BAL-
ANCE

• Engine: After warming up, idle the

engine.

• A/C switch: OFF
• Shift lever: P or N
• Cut off each fuel injector signal

one at a time using CONSULT.

Engine runs rough or stops.

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

COOLING FAN*

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

OFF using CONSULT.

Cooling fan moves and stops.

• Harness and connectors
• Cooling fan motor
• IPDM E/R

ENG COOLANT
TEMP

• Engine: Return to the original

non-standard condition

• Change the engine coolant tem-

perature using CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Engine coolant temperature sen-

sor

• Fuel injector

FUEL PUMP RE-
LAY

• 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 operat-
ing sound.

• Harness and connectors
• Fuel pump relay

VIAS S/V-1

• Ignition switch: ON
• Turn solenoid valve ON and OFF

with CONSULT and listen for op-
erating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

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.

Engine speed changes according to
the opening percent.

• Harness and connectors
• Solenoid valve

FUEL/T TEMP
SEN

• Change the fuel tank temperature using CONSULT.

VENT CON-
TROL/V

• Ignition switch: ON (Engine

stopped)

• Turn solenoid valve ON and OFF

with the CONSULT and listen to
operating sound.

Solenoid valve makes an operating
sound.

• Harness and connectors
• Solenoid valve

V/T ASSIGN AN-
GLE

• Engine: Return to the original

non-standard condition

• Change intake valve timing using

CONSULT.

If malfunctioning symptom disap-
pears, see CHECK ITEM.

• Harness and connectors
• Intake valve timing control sole-

noid valve

ALTERNATOR
DUTY

• Engine: Idle
• Change duty ratio using CON-

SULT.

Battery voltage changes.

• Harness and connectors
• IPDM E/R
• Alternator

EC-1016

< SYSTEM DESCRIPTION >

[VQ40DE FOR MEXICO]

DIAGNOSIS SYSTEM (ECM)

*: DTC P1456 does not apply to D40 models but appears in DTC Work Support Mode screens.

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

EVAPORATIVE SYS-
TEM

EVP V/S LEAK P0456/P1456*

P0442

EC-1209

P0456

EC-1232

PURG VOL CN/V P1444

P0443

EC-1218

A/F SEN1

A/F SEN1(B1) P1278/P1279

P0133

EC-1141

A/F SEN1(B1) P1276

P0130

EC-1129

A/F SEN1(B2) P1288/P1289

P0153

EC-1141

A/F SEN1(B2) P1286

P0150

EC-1129

HO2S2

HO2S2(B1) P1146

P0138

EC-1153

HO2S2(B1) P1147

P0137

EC-1147

HO2S2(B1) P0139

P0139

EC-1161

HO2S2(B2) P1166

P0158

EC-1153

HO2S2(B2) P1167

P0157

EC-1147

HO2S2(B2) P0159

P0159

EC-1161

ECM

EC-1017

< ECU DIAGNOSIS INFORMATION >

[VQ40DE FOR MEXICO]

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ECU DIAGNOSIS INFORMATION

ECM

CONSULT Reference Value in Data Monitor Mode

INFOID:0000000009481704

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 cam shaft position sensor and other sensors related to ignition timing.

For outlines of following items, refer to

EC-1008, "CONSULT Function"

.

MONITOR ITEM

CONDITION

SPECIFICATION

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-1083

.

B/FUEL SCHDL

See

EC-1083

.

A/F ALPHA-B1
A/F ALPHA-B2

See

EC-1083

.

COOLAN TEMP/S

• Engine: After warming up

More than 70

°C (158°F)

A/F SEN1 (B1)
A/F SEN1 (B2)

• Engine: After warming up

Maintaining engine speed at 2,000 rpm Fluctuates around 2.2 V

HO2S2 (B1)
HO2S2 (B2)

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

are met

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

idle for 1 minute under no load.

0 - 0.3V

←→ Approx. 0.6 - 1.0

V

HO2S2 MNTR (B1)
HO2S2 MNTR (B2)

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

are met

- Engine: After warming up
- 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 value with the speedometer in-

dication.

Almost the same speed as the
speedometer indication

BATTERY VOLT

• Ignition switch: ON (Engine stopped)

11 - 14 V

ACCEL SEN 1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.65 - 0.87 V

Accelerator pedal: Fully depressed

More than 4.3 V

ACCEL SEN 2*

1

• Ignition switch: ON

(Engine stopped)

Accelerator pedal: Fully released

0.56 - 0.96V

Accelerator pedal: Fully depressed

More than 4.0 V

TP SEN 1-B1
TP SEN 2-B1*

1

• Ignition switch: ON

(Engine stopped)

• Shift lever: D

Accelerator pedal: Fully released

More than 0.36 V

Accelerator pedal: Fully depressed

Less than 4.75 V

EVAP SYS PRES

• Ignition switch: ON

Approx. 1.8 - 4.8 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-1018

< ECU DIAGNOSIS INFORMATION >

[VQ40DE FOR MEXICO]

ECM

P/N POSI SW

• Ignition switch: ON

Shift lever: P or N

ON

Shift lever: Except above

OFF

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 is ON
and/or lighting switch is in 2nd

ON

Rear window defogger switch is OFF
and lighting switch is OFF

OFF

IGNITION SW

• Ignition switch: ON

→ OFF → ON

ON

→ OFF → ON

HEATER FAN SW

• Engine: After warming up, idle the

engine

Heater fan: Operating.

ON

Heater fan: Not operating

OFF

BRAKE SW

• Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

INJ PULSE-B1
INJ PULSE-B2

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

Idle

13

° - 18° BTDC

2,000 rpm

25

° - 45° BTDC

CAL/LD VALUE

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

Idle

5% - 35%

2,500 rpm

5% - 35%

MASS AIRFLOW

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

Idle

2.0 - 6.0 g/s

2,500 rpm

7.0 - 20.0 g/s

PURG VOL C/V

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

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

0%

2,000 rpm

—

INT/V TIM (B1)
INT/V TIM (B2)

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

Idle

−5° - 5°CA

2,000 rpm

Approx. 0

° - 30°CA

INT/V SOL (B1)
INT/V SOL (B2)

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

Idle

0% - 2%

2,000 rpm

Approx. 0% - 50%

VIAS S/V-1

• Engine: After warming up

2,200 - 3,300 rpm

ON

Except above conditions

OFF

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 second after turning ignition switch ON
• Engine running or cranking

ON

• Except above conditions

OFF

VENT CONT/V

• Ignition switch: ON

OFF

THRTL RELAY

• Ignition switch: ON

ON

MONITOR ITEM

CONDITION

SPECIFICATION