FUNCTION

Diagnostic test mode | Function
Work support | This mode enables a technician to adjust some devices faster and more accurately by following the indications on the CONSULT-III unit.
Self-diagnostic results | Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data can be read and erased quickly.*
Data monitor | Input/Output data in the ECM can be read.
Active test | Diagnostic Test Mode in which CONSULT-III drives some actuators apart from the ECMs and also shifts some parameters in a specified range.
DTC & SRT confirmation | The status of system monitoring tests and the self-diagnosis status/results can be confirmed.
Function test | This mode is used to inform customers when the vehicle requires periodic maintenance.
ECU part number | ECM part number can be read.
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.

- Diagnostic trouble codes
- 1st trip diagnostic trouble codes
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values

WORK SUPPORT MODE
Work Item

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 returns to the original coefficient.

When clearing mixture ratio self-learning value
EVAP SYSTEM CLOSE | Close the EVAP canister vent control valve in order to make EVAP system close under the following conditions.

- Ignition switch ON
- Engine not running
- Ambient temperature is above 0°C (32°F).
- No vacuum and no high pressure in EVAP system
- Fuel tank temp. is more than 0°C (32°F).
- Within 10 minutes after starting “EVAP system close”
- When trying to execute “EVAP system close” under the condition except above, CONSULT-III will discontinue it and display appropriate instruction.
  NOTE：
  When starting engine, CONSULT-III may display “Battery voltage is low. Charge battery”, even when using a charged battery.

When detecting EVAP vapor leak in the EVAP system
VIN REGISTRATION |

- In this mode, VIN is registered in ECM.

When registering VIN in ECM
TARGET IDLE RPM ADJ* |

- Idle condition

When setting target idle speed
TARGET IGN TIM ADJ* |

- Idle condition

When adjusting target ignition timing
ECT HISTORY | Refer to “Engine coolant temperature history”.
ENG OIL TEMP HISTORY | Refer to “Engine oil temperature history”.
ECT HISTORY CLEAR |

- Ignition switch ON

When erase engine coolant temperature history.
ENG OIL TEMP HISTORY CLEAR |

- Ignition switch ON

When erase engine oil temperature history.
*: This function is not necessary in the usual service procedure.

Engine coolant temperature history

- Since an engine coolant temperature reaching a certain temperature and a travel distance are displayed, the adequacy of LLC concentration and coolant level for high performance driving can be checked by using temperatures stored in history. In addition to this, the presence or absence of malfunctions in cooling system can be checked.

  Display item | Description
  ECT PEAK [°C] or [°F] | ECM stores temperature and displays the highest temperature when engine coolant became the temperature more than 110°C (230°F).
  ODO [km] or [mile] | Display the travel distance of highest engine coolant temperature.

  NOTE：
  - Engine coolant temperature history is updated when highest engine coolant temperature changed.
  - Engine coolant temperature history is not stored when engine coolant temperature less than 110°C (230°F).
  ■ CAUTION ■
  - Check the coolant when engine coolant temperature history is stored. Refer to Inspection.
  - After the check of the coolant or repair, perform “ECT HISTORY CLEAR” with “WORK SUPPORT” mode of CONSULT-III, and erase engine coolant temperature history.

Engine oil temperature history

- Since an engine oil temperature reaching a certain temperature and a travel distance are displayed, maintenance interval of engine oil can be checked by using temperature stored in history.

  Display item | Description
  ENG OIL TEMP PEAK [°C] or [°F] | ECM stores temperature and displays the highest temperature when engine oil became the temperature more than110°C (230°F).
  ODO [km] or [mile] | Display the travel distance of highest engine oil temperature.

  NOTE：
  - Engine oil temperature history is updated when highest engine oil temperature changed.
  - Engine oil temperature history is not stored when engine oil temperature less than 110°C (230°F).
  ■ CAUTION ■
  - Confirm the maintenance interval of engine oil when engine oil temperature history is stored, because the maintenance interval of engine oil changes by temperature. Refer to Introduction of Periodic Maintenance.
  - After engine oil temperature history confirmation, perform “ENG OIL TEMP HISTORY CLEAR” with “WORK SUPPORT” mode of CONSULT-III, and erase engine oil temperature history.

SELF-DIAG RESULTS MODE
Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to DTC Index.
How to Read DTC and 1st Trip DTC
DTCs and 1st trip DTCs related to the malfunction are displayed in “Self-diag results”.

- When ECM detects a 1st trip DTC, “1t” is displayed for “TIME”.
- When ECM has detected a current DTC, “0” is displayed for “TIME”.
- If “TIME” is neither “0” nor “1t”, the DTC occurred in the past and ECM shows the number of times the vehicle has been driven since the last detection of the DTC.

Freeze Frame Data and 1st Trip Freeze Frame Data

Freeze frame data item* | Description
DIAG TROUBLE CODE [PXXXX] |

- The engine control component part/control system has a trouble code the is displayed as PXXXX. (Refer to DTC Index.)

FUEL SYS-B1 |

- “Fuel injection system status” at the moment a malfunction is detected is displayed.
- One of the following mode is displayed.
  Mode2: Open loop due to detected system malfunction
  Mode3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
  Mode4: Closed loop - using oxygen sensor(s) as feedback for fuel control
  Mode5: Open loop - has not yet satisfied condition to go to closed loop

FUEL SYS-B2
CAL/LD VALUE [%] |

- The calculated load value at the moment a malfunction is detected is displayed.

COOLANT TEMP [°C] or [°F] |

- The engine coolant temperature at the moment a malfunction is detected is displayed.

L-FUEL TRM-B1 [%] |

- “Long-term fuel trim” at the moment a malfunction is detected is displayed.
- The long-term fuel trim indicates much more gradual feedback compensation to the base fuel schedule than short-term fuel trim.

L-FUEL TRM-B2 [%]
S-FUEL TRM-B1 [%] |

- “Short-term fuel trim” at the moment a malfunction is detected is displayed.
- The short-term fuel trim indicates dynamic or instantaneous feedback compensation to the base fuel schedule.

S-FUEL TRM-B2 [%]
ENGINE SPEED [rpm] |

- The engine speed at the moment a malfunction is detected is displayed.

VEHICL SPEED [km/h] or [mph] |

- The vehicle speed at the moment a malfunction is detected is displayed.

ABSOL TH·P/S [%] |

- The throttle valve opening angle at the moment a malfunction is detected is displayed.

B/FUEL SCHDL [msec] |

- The base fuel schedule at the moment a malfunction is detected is displayed.

INT/A TEMP SE [°C] or [°F] |

- The intake air temperature at the moment a malfunction is detected is displayed.

INT MANI PRES [kPa] |

- These items are displayed but are not applicable to this model.

COMBUST CONDITION
*: The items are the same as those of 1st trip freeze frame data.

DATA MONITOR MODE
Monitored Item

×: Applicable
Monitored item | Unit | Description | Remarks
ENG SPEED | rpm |

- Indicates the engine speed computed from the signal of the crankshaft position sensor (POS) and camshaft position sensor (PHASE).

- Accuracy becomes poor if engine speed drops below the idle rpm.
- If the signal is interrupted while the engine is running, an abnormal value may be indicated.

MAS A/F SE-B1 | V |

- The signal voltage of the mass air flow sensor is displayed.

- When the engine is stopped, a certain value is indicated.
- When engine is running, specification range is indicated in “SPEC”.

MAS A/F SE-B2
B/FUEL SCHDL | msec |

- “Base fuel schedule” indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction.

- When engine is running, specification range is indicated in “SPEC”.

A/F ALPHA-B1 | % |

- The mean value of the air-fuel ratio feedback correction factor per cycle is indicated.

- When the engine is stopped, a certain value is indicated.
- This data also includes the data for the air-fuel ratio learning control.
- When engine is running, specification range is indicated in “SPEC”.

A/F ALPHA-B2
COOLAN TEMP/S | °C or °F |

- The engine coolant temperature (determined by the signal voltage of the engine coolant temperature sensor) is displayed.

- When the engine coolant temperature sensor is open or short-circuited, ECM enters fail-safe mode. The engine coolant temperature determined by the ECM is displayed.

A/F SEN1 (B1) | V |

- The A/F signal computed from the input signal of the air fuel ratio (A/F) sensor 1 is displayed.

A/F SEN1 (B2)
HO2S2 (B1) | V |

- The signal voltage of the heated oxygen sensor 2 is displayed.

HO2S2 (B2)
HO2S2 MNTR (B1) | RICH/LEAN |

- Display of heated oxygen sensor 2 signal:
  RICH: means the amount of oxygen after three way catalyst is relatively small.
  LEAN: means the amount of oxygen after three way catalyst is relatively large.

- When the engine is stopped, a certain value is indicated.

HO2S2 MNTR (B2)
VHCL SPEED SE | km/h or mph |

- The vehicle speed computed from the vehicle speed signal sent from combination meter is displayed.

BATTERY VOLT | V |

- The power supply voltage of ECM is displayed.

ACCEL SEN 1 | V |

- The accelerator pedal position sensor signal voltage is displayed.

- ACCEL SEN 2 signal is converted by ECM internally. Thus, they differs from ECM terminal voltage signal.

ACCEL SEN 2
TP SEN 1-B1 | V |

- The throttle position sensor signal voltage is displayed.

- TP SEN 2-B1 signal is converted by ECM internally. Thus, they differs from ECM terminal voltage signal.

TP SEN 2-B1
FUEL T/TMP SE | °C or °F |

- The fuel temperature (determined by the signal voltage of the fuel tank temperature sensor) is displayed.

INT/A TEMP SE | °C or °F |

- The intake air temperature (determined by the signal voltage of the intake air temperature sensor) is indicated.

EVAP SYS PRES | V |

- The signal voltage of EVAP control system pressure sensor is displayed.

FUEL LEVEL SE | V |

- The signal voltage of the fuel level sensor is displayed.

START SIGNAL | ON/OFF |

- Indicates start signal status [ON/OFF] computed by the ECM according to the signals of engine speed and battery voltage.

- After starting the engine, [OFF] is displayed regardless of the starter signal.

CLSD THL POS | ON/OFF |

- Indicates idle position [ON/OFF] computed by ECM according to the accelerator pedal position sensor signal.

AIR COND SIG | ON/OFF |

- Indicates [ON/OFF] condition of the air conditioner switch as determined by the air conditioner signal.

P/N POSI SW | ON/OFF |

- Indicates [ON/OFF] condition from the park/neutral position (PNP) signal.

PW/ST SIGNAL | ON/OFF |

- [ON/OFF] condition of the power steering system (determined by the signal voltage of the power steering pressure sensor signal) is indicated.

LOAD SIGNAL | ON/OFF |

- Indicates [ON/OFF] condition from the electrical load signal.
  ON: Rear window defogger switch is ON and/or lighting switch is in 2nd position.
  OFF: Both rear window defogger switch and lighting switch are OFF.

IGNITION SW | ON/OFF |

- Indicates [ON/OFF] condition from ignition switch signal.

HEATER FAN SW | ON/OFF |

- Indicates [ON/OFF] condition from the heater fan switch signal.

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 signals.

- When the engine is stopped, a certain computed value is indicated.

INJ PULSE-B2
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.

CAL/LD VALUE | % |

- “Calculated load value” indicates the value of the current air flow divided by peak air flow.

MASS AIRFLOW | g·m/s |

- Indicates the mass air flow computed by ECM according to the signal voltage of the mass air flow sensor.

PURG VOL C/V | % |

- Indicates the EVAP canister purge volume control solenoid valve control value computed by the ECM according to the input signals.
- The opening becomes larger as the value increases.

INT/V TIM (B1) | °CA |

- Indicates [°CA] of intake camshaft advance angle.

INT/V TIM (B2)
INT/V SOL (B1) | % |

- The control value of the intake valve timing control solenoid valve (determined by ECM according to the input signals) is indicated.
- The advance angle becomes larger as the value increases.

INT/V SOL (B2)
TP SEN 1-B2 | V |

- The throttle position sensor signal voltage is displayed.

- TP SEN 2-B2 signal is converted by ECM internally. Thus, they differs from ECM terminal voltage signal.

TP SEN 2-B2
AIR COND RLY | ON/OFF |

- The air conditioner relay control condition (determined by ECM according to the input signals) is indicated.

SUB FP RLY | ON/OFF |

- Indicates [ON/OFF] condition of sub fuel pump relay determined by ECM according to the input signals.

FPCM | LOW/MID/HI |

- The control condition of the fuel pump control module (FPCM) (determined by ECM according to the input signals) is indicated.

VENT CONT/V | ON/OFF |

- The control condition of the EVAP canister vent control valve (determined by ECM according to the input signals) is indicated.
  ON: Closed
  OFF: Open

THRTL RELAY | ON/OFF |

- Indicates the throttle control motor relay control condition determined by the ECM according to the input signals.

AIR/P CNT S/V | ON/OFF |

- Indicates [ON/OFF] condition of air cut solenoid valve determined by ECM according to the input signals.

AIR PUMP RLY | ON/OFF |

- Indicates [ON/OFF] condition of air pump relay 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.

HO2S2 HTR (B2)
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 Learning
  YET: Idle air volume learning has not been performed yet.
  CMPLT: Idle air volume learning has already been performed successfully.

SNOW MODE SW | ON/OFF |

- Indicates [ON/OFF] condition from the snow mode switch signal.

ENG OIL TEMP | °C or °F |

- The engine oil temperature (determined by the signal voltage of the engine oil temperature sensor) is displayed.

TRVL AFTER MIL | km or mile |

- Distance traveled while MIL is activated.

A/F S1 HTR (B1) | % |

- Air fuel ratio (A/F) 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.

A/F S1 HTR (B2)
AC PRESS SEN | V |

- The signal voltage from the refrigerant pressure sensor is displayed.

VHCL SPEED SE | km/h or mph |

- The vehicle speed computed from the vehicle speed signal sent from combination meter is displayed.

SET VHCL SPD | km/h or mph |

- The preset vehicle speed is displayed.

MAIN SW | ON/OFF |

- Indicates [ON/OFF] condition from MAIN switch signal.

CANCEL SW | ON/OFF |

- Indicates [ON/OFF] condition from CANCEL switch signal.

RESUME/ACC SW | ON/OFF |

- Indicates [ON/OFF] condition from RESUME/ACCELERATE switch signal.

SET SW | ON/OFF |

- Indicates [ON/OFF] condition from SET/COAST switch signal.

BRAKE SW1 | ON/OFF |

- Indicates [ON/OFF] condition from ASCD brake switch signal.

BRAKE SW2 | ON/OFF |

- Indicates [ON/OFF] condition of stop lamp switch signal.

VHCL SPD CUT | NON/CUT |

- Indicates the vehicle cruise condition.
  NON: Vehicle speed is maintained at the ASCD set speed.
  CUT: Vehicle speed decreased to excessively low compared with the ASCD set speed, and ASCD operation is cut off.

LO SPEED CUT | NON/CUT |

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

AT OD MONITOR | ON/OFF |

- Indicates [ON/OFF] condition of A/T O/D according to the input signal from the TCM.

AT OD CANCEL | ON/OFF |

- Indicates [ON/OFF] condition of A/T O/D cancel request signal.

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 input signals.

A/F ADJ-B1 | — |

- Indicates the correction of factor stored in ECM. The factor is calculated from the difference between the target air-fuel ratio stored in ECM and the air-fuel ratio calculated from A/F sensor 1 signal.

A/F ADJ-B2
FAN DUTY | % |

- Indicates a command value for cooling fan. The value is calculated by ECM based on input signals.

TURBO BST SEN- B1 | V |

- The turbocharger boost sensor signal voltage is displayed.

TURBO BST SEN- B2
FUEL PUMP DUTY | % |

- The control condition of the fuel pump control module (FPCM) (determined by ECM according to the input signals) is indicated.

SNDRY MAS A/F SE | % |

- Indicates a command value for secondary air injection system mass air flow sensor. The value is calculated by ECM based on input signals.

BOOST S/V DUTY | % |

- The turbocharger boost control solenoid valve control condition (determined by ECM according to the input signals) is indicated.

THRTL ANGLE B1 | deg |

- Indicates [deg] of throttle control valve angle.

THRTL ANGLE B2
A/F SEN1 DIAG2 (B1)* | INCMP/CMPLT |

- Indicates DTC P0133 self-diagnosis condition.

INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
A/F SEN1 DIAG2(B2)* | INCMP/CMPLT |

- Indicates DTCP0153 self-diagnosis condition.

INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
HO2 S2 DIAG2 (B1)* | INCMP/CMPLT |

- Indicates DTC P0139 self-diagnosis (slow response) condition.

INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
HO2 S2 DIAG2 (B2)* | INCMP/CMPLT |

- Indicates DTC P0159 self-diagnosis (slow response) condition.

INCMP: Self-diagnosis is incomplete.
CMPLT: Self-diagnosis is complete.
*: The item is indicated, but not used.
NOTE：
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

ACTIVE TEST MODE
Test Item

Test item | Condition | Judgment | Check item (Remedy)
FUEL INJECTION |

- Engine: Return to the original trouble condition
- Change the amount of fuel injection using CONSULT-III.

If trouble symptom disappears, see CHECK ITEM.

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

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 Learning.

POWER BALANCE |

- Engine: After warming up, idle the engine.
- A/C switch OFF
- Selector lever: P or N
- Cut off each injector signal one at a time using CONSULT-III.

Engine runs rough or stops.

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

ENG COOLANT TEMP |

- Engine: Return to the original trouble condition
- Change the engine coolant temperature using CONSULT-III.

If trouble symptom disappears, see CHECK ITEM.

- Harness and connectors
- Engine coolant temperature sensor
- Fuel injector

SUB FUEL PUMP RELAY |

- Ignition switch: ON (Engine stopped)
- Turn the sub fuel pump relay ON and OFF using CONSULT-III and listen to operating sound.

Sub fuel pump relay makes the operating sound.

- Harness and connectors
- Sub fuel pump relay

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 using CONSULT-III.

Engine speed changes according to the opening percent.

- Harness and connectors
- Solenoid valve

FUEL/T TEMP SEN |

- Change the fuel tank temperature using CONSULT-III.

VENT CONTROL/V |

- Ignition switch: ON (Engine stopped)
- Turn solenoid valve ON and OFF with the CONSULT-III and listen to operating sound.

Solenoid valve makes an operating sound.

- Harness and connectors
- Solenoid valve

V/T ASSIGN ANGLE |

- Engine: Return to the original trouble condition
- Change intake valve timing using CONSULT-III.

If trouble symptom disappears, see CHECK ITEM.

- Harness and connectors
- Intake valve timing control solenoid valve

FPCM |

- Engine: Return to the original trouble condition
- Select “LOW”, “MID” and “HI” with CONSULT-III.

Fuel pump speed changes or stops.

- Harness and connectors
- Fuel pump control module (FPCM)

FAN DUTY CONTROL* |

- Ignition switch: ON
- Change duty ratio using CONSULT-III.

Cooling fan speed changes.

- Harness and connectors
- Cooling fan motor
- Cooling fan relay
- Cooling fan control module
- IPDM E/R

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

DTC & SRT CONFIRMATION MODE
SRT STATUS Mode
For items whose SRT codes are set, “CMPLT” is displayed on the CONSULT-III 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.
DTC WORK SUPPORT Mode

Test mode | Test item | Corresponding DTC No. | Reference page
EVAPORATIVE SYSTEM | EVP SML LEAK P0442/P1442* | P0455 | DTC Logic (GT-R certified NISSAN dealer)
EVP V/S LEAK P0456/P1456* | P0442 | DTC Logic (GT-R certified NISSAN dealer)
P0456 | DTC Logic (GT-R certified NISSAN dealer)
PURG VOL CN/V P1444 | P0443 | DTC Logic (GT-R certified NISSAN dealer)
PURG FLOW P0441 | P0441 | DTC Logic (GT-R certified NISSAN dealer)
A/F SEN1 | A/F SEN1 (B1) P1278/P1279 | P0133 | DTC Logic (GT-R certified NISSAN dealer)
A/F SEN1 (B1) P1276 | P0130 | DTC Logic (GT-R certified NISSAN dealer)
A/F SEN1 (B2) P1288/P1289 | P0153 | DTC Logic (GT-R certified NISSAN dealer)
A/F SEN1 (B2) P1286 | P0150 | DTC Logic (GT-R certified NISSAN dealer)
HO2S2 | HO2S2 (B1) P1146 | P0138 | DTC Logic (GT-R certified NISSAN dealer)
HO2S2 (B1) P1147 | P0137 | DTC Logic (GT-R certified NISSAN dealer)
HO2S2 (B1) P0139 | P0139 | DTC Logic (GT-R certified NISSAN dealer)
HO2S2 (B2) P1166 | P0158 | DTC Logic (GT-R certified NISSAN dealer)
HO2S2 (B2) P1167 | P0157 | DTC Logic (GT-R certified NISSAN dealer)
HO2S2 (B2) P0159 | P0159 | DTC Logic (GT-R certified NISSAN dealer)
*: DTC P1442 and P1456 does not apply to R35 models but appears in DTC Work Support Mode screens.