Nissan Juke Service and Repair Manual : Basic inspection
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance.
2. Open engine hood and check the following:
- Harness connectors for improper connections
- Wiring harness for improper connections, pinches and cut
- Vacuum hoses for splits, kinks and improper connections
- Hoses and ducts for leaks
- Air cleaner clogging
- Gasket
3. Confirm that electrical or mechanical loads are not applied.
- Headlamp switch is OFF.
- Air conditioner switch is OFF.
- Rear window defogger switch is OFF.
- Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no load.
6. Make sure that no DTC is displayed with CONSULT-III or GST.
Is any DTC detected? YES >> GO TO 2.
NO >> GO TO 3.
2.REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
3.CHECK TARGET IDLE SPEED
1. Run engine at about 2,000 rpm for about 2 minutes under no load.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no load, then run engine at idle speed for about 1 minute.
3. Check idle speed.
For procedure, refer to EC-443, "Special Repair Requirement".
For specification, refer to EC-449, "Idle Speed".
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 4.
4.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-134, "Work Procedure".
>> GO TO 5.
5.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-135, "Work Procedure".
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-136, "Work Procedure".
Is Idle Air Volume Learning carried out successfully? YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-443, "Special Repair Requirement".
For specification, refer to EC-449, "Idle Speed".
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
• Check camshaft position sensor (PHASE) and circuit. Refer to EC-274, "DTC Logic".
• Check crankshaft position sensor (POS) and circuit. Refer to EC-271, "DTC Logic".
Is the inspection result normal? YES >> GO TO 9.
NO >> Repair or replace. Then GO TO 4
9.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the
cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition
key IDs. Refer to SEC-50,
"ECM : Work Procedure".
>> GO TO 4.
10.CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
For procedure, refer to EC-444, "Special Repair Requirement" For specification, refer to EC-449, "Ignition Timing".
1 : Timing indicator
Is the inspection result normal? YES >> INSPECTION END.
NO >> GO TO 11.
11.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-134, "Work Procedure".
>> GO TO 12.
12.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
12.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING Perform EC-135, "Work Procedure".
>> GO TO 13.
13.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-136, "Work Procedure".
Is Idle Air Volume Learning carried out successfully? YES >> GO TO 14.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
14.CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-443, "Special Repair Requirement".
For specification, refer to EC-449, "Idle Speed".
Is the inspection result normal? YES >> GO TO 15.
NO >> GO TO 17.
15.CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
For procedure, refer to EC-444, "Special Repair Requirement".
For specification, refer to EC-449, "Ignition Timing".
1 : Timing indicator
Is the inspection result normal? YES >> INSPECTION END.
NO >> GO TO 16.
16.CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-67, "Exploded View".
Is the inspection result normal? YES >> GO TO 17.
NO >> Repair the timing chain installation. Then GO TO 4.
17.DETECT MALFUNCTIONING PART
Check the following.
• Check camshaft position sensor (PHASE) and circuit. Refer to EC-274, "DTC Logic".
• Check crankshaft position sensor (POS) and circuit. Refer to EC-271, "DTC Logic".
Is the inspection result normal? YES >> GO TO 18.
NO >> Repair or replace. Then GO TO 4
18.CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the
cause of an incident, but
this is a rare case.)
2. Perform initialization of NATS system and registration of all NATS ignition
key IDs. Refer to SEC-50,
"ECM : Work Procedure".
>> GO TO 4.
Diagnosis and repair workflow
Work F
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfu ...
Additional service when replacing
ECM
Description
When replacing ECM, this procedure must be performed.
Work Procedure
1.PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS
IGNITION KEY IDS
Refer to SEC-50, "ECM ...
Other materials:
Changing engine coolant
Major cooling system repairs should be performed by a NISSAN dealer. The service
procedures can be found in the appropriate NISSAN Service Manual.
Improper servicing can result in reduced heater performance and engine overheating.
WARNING
• To avoid the danger of being scalded, never change t ...
Service
• Never use electrical test equipment to check SRS circuits unless instructed
to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect battery
negative terminal and wait at least 3
minutes.
For approximately 3 minutes after the battery negative termina ...
General maintenance
Throughout the daily operation of your vehicle, performing general maintenance at the intervals described in this section is vital for long-term reliability. Should you notice any unusual acoustic feedback, vibrations, or strange odors while driving your Nissan Leaf, be sure to investigate the sourc ...
