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 signal are converted by ECM internally. Thus, they differ from ECM terminals voltage signal.
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.
: 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 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
*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)
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:
Front wheel hub and knuckle
Exploded View
1. Steering knuckle
2. Splash guard
3. Hub bolt
4. Wheel hub assembly (Bearing-integrated
type)
5. Disc rotor
6. Wheel hub lock nut
7. Adjusting cap
8. Cotter pin
A. Tightening must be done following the installation procedure. Refer to
FAX-43, "Removal and Insta ...
Diagnosis system (A/C auto AMP.)
Description
Air conditioning system performs self-diagnosis, operation check, function
diagnosis, and various settings
using diagnosis function of each control unit.
CONSULT-III Function
CONSULT-III performs the following functions via CAN communication with A/C
auto amp.
NOTE:
Diagnos ...
Squeak and rattle trouble diagnoses
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any of
customer's comments; refer to DLK-302, &quo ...