Nissan Juke Service and Repair Manual : Diagnosis and repair work flow
Flowchart of Trouble Diagnosis
NOTE
:
“DTC” includes DTC at the 1st trip.
1.OBTAIN INFORMATION ABOUT SYMPTOM
1. Refer to TM-372, "Question sheet" and interview the customer to obtain the malfunction information (conditions and environment when the malfunction occurred) as much as possible when the customer brings in the vehicle.
2. Check the following:
- Service history
- Malfunction of harness and connector. GI-42, "Intermittent Incident".
>> GO TO 2.
2.CHECK DTC
1. Before checking the malfunction, check whether any DTC exists.
2. If DTC exists, perform the following operations.
- Records the DTCs. (Print out using CONSULT-III and affix to the Work Order
Sheet.)
- Erase DTCs.
- Check the relation between the cause found by DTC and the malfunction information from customer. TM- 475, "Symptom Table" can be used effectively.
3. Check the relevant information including STI, etc.
Do malfunction information and DTC exist? Malfunction information and DTC exist.>>GO TO 3.
Malfunction information exists but no DTC.>>GO TO 4.
No malfunction information, but DTC exists.>>GO TO 5.
3.REPRODUCE MALFUCTION SYSTEM
Check the malfunction described by the customer on the vehicle.
Check if the behavior is fail safe or normal operation. Refer toTM-362, "Fail-Safe".
Interview sheet can be used effectively when reproduce malfunction conditions. Refer to TM-372, "Question sheet".
Verify the relationship between the symptom and the conditions in which the malfunction described by the customer occurs.
>> GO TO 5.
4.REPRODUCE MALFUNCTION SYMPTOM
Check the malfunction described by the customer on the vehicle.
Check if the behavior is fail safe or normal operation. Refer toTM-362, "Fail-Safe".
Interview sheet can be used effectively when reproduce malfunction conditions.TM-372, "Question sheet".
Verify the relationship between the symptom and the conditions in which the malfunction described by the customer occurs.
>> GO TO 6.
5.PERFORM “DTC CONFIRMATION PROCEDURE”
Perform “DTC CONFIRMATION PROCEDURE” of the appropriate DTC to check if DTC is detected again.
Refer to TM-365, "DTC Inspection Priority Chart" when multiple DTCs are detected, and then determine the order for performing the diagnosis.
Is any DTC detected? YES >> GO TO 7.
NO >> Follow GI-42, "Intermittent Incident" to chec
6.IDENTIFY MALFUNCTIONING SYSTEM WITH “DIAGNOSIS CHART BY SYMPTOM”
Use TM-475, "Symptom Table" from the symptom inspection result in step 4. Then identify where to start performing the diagnosis based on possible causes and symptoms.
>> GO TO 8.
7.REPAIR OR REPLACE THE MALFUNCTIONING PARTS
Repair or replace the detected malfunctioning parts.
Reconnect parts or connector after repairing or replacing, and then erase DTC if necessary.
>> GO TO 8.
8.FINAL CHECK
Perform “DTC CONFIRMATION PROCEDURE” again to make sure that the repair is correctly performed.
Check that malfunctions are not reproduced when obtaining the malfunction information from the customer, referring to the symptom inspection result in step 3 or 4.
Is DTC or malfunction symptom reproduced? YES-1 (DTC is reproduced.)>>GO TO 5.
YES-2 (Malfunction is reproduced.)>>GO TO 6.
NO >> Before delivering the vehicle to the customer, make sure that DTC is erased.
Question sheet
DESCRIPTION
There are many operating conditions that may cause a malfunction of the transmission parts. By understanding those conditions properly, a quick and exact diagnosis can be achieved.
In general, perception of a problem varies depending on individuals.
Ask the customer about his/her concerns carefully. It is important to understand the phenomenon or status. To systemize all the information for the diagnosis, prepare the question sheet referring to the question points.
In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
Worksheet Sample
Basic inspection
...
Additional service when replacing TCM
Description
Always perform the following items when the TCM is replaced.
CHECK LOADING OF CALIBRATION DATA
• The TCM acquires calibration data (individual characteristic value) of each
solenoid ...
Other materials:
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 memory. The MI will not illuminate at this stage. <1st trip>
If the same malfunction is dete ...
P2119 electric throttle control function
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace.
2.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric t ...
P0014 EVT control
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC P0014 is displayed with DTC P0078, first perform trouble diagnosis for
DTC P0078. Refer to
EC-179, "DTC Logic".
• If DTC P0014 is displayed with P1078, first perform trouble diagnosis for
P1078. Refer to EC-313,
"DTC Logic".
...