Nissan Leaf. Instruction — part 620
DIAGNOSIS AND REPAIR WORKFLOW
EXL-81
< BASIC INSPECTION >
[LED HEADLAMP]
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1.
GET INFORMATION FOR SYMPTOM
1. Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).
2. Check operation condition of the function that is malfunctioning.
>> GO TO 2.
2.
CHECK DTC
1. Check DTC.
2. Perform the following procedure if DTC is detected:
-
Record DTC and freeze frame data (Print them out using CONSULT.)
-
Erase DTC.
-
Study the relationship between the cause detected by DTC and the symptom described by the customer.
3. Check related service bulletins for information.
Are any symptoms described and any DTC detected?
Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 5.
3.
CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 5.
4.
CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 6.
5.
PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC CONFIRMATION PROCEDURE for the detected DTC, and then check that DTC is detected
again. At this time, always connect CONSULT to the vehicle, and check self diagnostic results in real time.
If two or more DTCs are detected, refer to
BCS-47, "DTC Inspection Priority Chart"
(BCM) or
(IPDM E/R), and determine trouble diagnosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service
Instruction. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.
Is DTC detected?
YES
>> GO TO 7.
NO
>> Check according to
GI-53, "Intermittent Incident"
.
6.
DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS
Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.
Is the symptom described?
YES
>> GO TO 7.
NO
>> Monitor input data from related sensors or check voltage of related module terminals using CON-
SULT.
7.
DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE
EXL-82
< BASIC INSPECTION >
[LED HEADLAMP]
DIAGNOSIS AND REPAIR WORKFLOW
Inspect according to Diagnostic Procedure of the system.
Is malfunctioning part detected?
YES
>> GO TO 8.
NO
>> Check according to
GI-53, "Intermittent Incident"
.
8.
REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.
3. Check DTC. If DTC is detected, erase it.
>> GO TO 9.
9.
FINAL CHECK
When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.
Is DTC detected and does symptom remain?
YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO
>> Before returning the vehicle to the customer, always erase DTC.
LED HEADLAMP OPERATION INSPECTION
EXL-83
< BASIC INSPECTION >
[LED HEADLAMP]
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LED HEADLAMP OPERATION INSPECTION
Diagnosis Procedure
INFOID:0000000010121340
1.
CHECK START
1. In the cool LED status (wait for more than 10 minutes after turning headlamp OFF), turn ON and turn OFF
headlamp for the several times. Check that headlamp operates normally each time.
2. In the cool LED status, turn headlamp ON, wait until headlamp enters to the stable status (approximately
5 minutes after turning headlamp ON), and then check that headlamp operates normally without blinking
or flickering.
3. In the warm LED status (turn headlamp ON for more than 15 minutes and wait for 1 minute after turning
OFF), turn ON and turn OFF headlamp for the several times. Check that headlamp operates normally
each time.
4. Turn headlamp ON for approximately 30 minutes, and then check that headlamp operates normally with-
out difference in brightness between LH and RH, blinking or flickering.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Refer to
EXL-114, "WITHOUT DAYTIME RUNNING LIGHT SYSTEM : Symptom Table"
EXL-84
< DTC/CIRCUIT DIAGNOSIS >
[LED HEADLAMP]
HEADLAMP (HI) CIRCUIT
DTC/CIRCUIT DIAGNOSIS
HEADLAMP (HI) CIRCUIT
WITHOUT DAYTIME RUNNING LIGHT SYSTEM
WITHOUT DAYTIME RUNNING LIGHT SYSTEM : Component Function Check
INFOID:0000000010121341
1.
CHECK HEADLAMP (HI) OPERATION
CONSULT ACTIVE TEST
1. Select “EXTERNAL LAMPS” in “Active Test” of “IPDM E/R”.
2. While operating the test items, check that the headlamp (HI) is turned ON.
NOTE:
ON/OFF is repeated 1 second each.
Is the inspection result normal?
YES
>> Headlamp (HI) circuit is normal.
NO
>> Refer to
EXL-84, "WITHOUT DAYTIME RUNNING LIGHT SYSTEM : Diagnosis Procedure"
WITHOUT DAYTIME RUNNING LIGHT SYSTEM : Diagnosis Procedure
INFOID:0000000010121342
Regarding Wiring Diagram information. Refer to
1.
CHECK HEADLAMP (HI) OUTPUT VOLTAGE
CONSULT ACTIVE TEST
1. Turn power switch OFF.
2. Disconnect front combination lamp connector.
3. Turn power switch ON.
4. Select “EXTERNAL LAMPS” in “Active Test” of “IPDM E/R”.
5. While operating the test items, check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CHECK HEADLAMP (HI) OPEN CIRCUIT
1. Turn power switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and front combination lamp harness connector.
Hi
: Headlamp (HI) ON
Off
: Headlamp (HI) OFF
(+)
(
−)
Test item
Voltage
(Approx.)
IPDM E/R
Connector
Terminal
RH
E15
49
Ground
EXTERNAL
LAMPS
Hi
Battery voltage
Off
0 V
LH
50
Hi
Battery voltage
Off
0 V
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