Nissan Juke Service and Repair Manual : ECU diagnosis information

ECM

Reference Value

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.




*: Accelerator pedal position sensor 2 signal and throttle position sensor 2


*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from ECM terminals voltage signal.

TERMINAL LAYOUT

PHYSICAL VALUES


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.









: Average voltage for pulse


signal (Actual pulse signal can be confirmed by oscilloscope.): Average voltage for pulse
signal (Actual pulse signal can be confirmed by oscilloscope.) *: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to PG-111, "How to Handle Battery".

Fail Safe

NON DTC RELATED ITEM

DTC RELATED ITEM


DTC RELATED ITEM


DTC Inspection Priority Chart


DTC Inspection Priority Chart

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.


DTC Index


DTC Index



*1: 1st trip DTC No. is the same as DTC No.


*1: 1st trip DTC No. is the same as DTC No.

*2: This number is prescribed by SAE J1979/ ISO 15031-5.

*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.

*4: The troubleshooting for this DTC needs CONSULT-III.

*5: When the fail-safe operations for both self-diagnoses occur, the MI illuminates.

*6: This self-diagnosis is not for ECM power supply circuit, even though “ECM BACK UP/CIRCUIT” is displayed on CONSULT-III screen.

Test Value and Test Limit

The following is the information specified in Service $06 of SAE J1979/ISO 15031-5.

The test value is a parameter used to determine whether a system/circuit diagnostic test is OK or NG while being monitored by the ECM during self-diagnosis. The test limit is a reference value which is specified as the maximum or minimum value and is compared with the test value being monitored.

These data (test value and test limit) are specified by On Board Monitor ID (OBDMID), Test ID (TID), Unit and Scaling ID and can be displayed on the GST screen.

The items of the test value and test limit will be displayed with GST screen which items are provided by the ECM. (e.g., if bank 2 is not applied on this vehicle, only the items of bank 1 are displayed)






Wiring diagram


    Diagnosis system (ECM)
    Diagnosis description : 1st Trip Detection Logic and Two Trip Detection Logic When a malfunction is detected for the first time, 1st trip DTC and 1st trip Freeze Frame data are stored in the ECM ...

    Wiring diagram
    Engine control system Wiring Diagram For connector terminal arrangements, harness layouts, and alphabets in a (option abbreviation; if not described in wiring diagram), refer to GI-12, "Conn ...

    Other materials:

    Clock (if so equipped)
    The digital clock (in the audio unit) displays time when the ignition switch is in the ACC or ON position. The clock ON or OFF mode can be selected. For details of the digital clock in the NAVIGATION SYSTEM, refer to “Clock” . If the power supply is disconnected, the clock will not indicate the ...

    Door mirror remote control switch
    Exploded View 1. Instrument lower panel 2. Switch bracket 3. Door mirror remote control switch Removal and Installation REMOVAL 1. Remove the instrument lower panel. Refer to IP-13, "Removal and Installation". 2. Remove mounting screws and remove switch bracket from instrument ...

    Vehicle recovery (freeing a stuck vehicle)
    WARNING • Stand clear of a stuck vehicle. •  Do not spin your tires at high speed. This could cause them to explode and result in serious injury. Parts of your vehicle could also overheat and be damaged. Pulling a stuck vehicle Do not use the tie down hook for towing or vehicle recovery. ...