Nissan Leaf. Manual — part 969
MWI
METER SYSTEM
MWI-79
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AANIA2882GB
MWI-80
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DIAGNOSIS AND REPAIR WORKFLOW (METER SYSTEM)
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW (METER SYSTEM)
Work flow
INFOID:0000000010122411
OVERALL SEQUENCE
DETAILED FLOW
1.
OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.
CHECK SYMPTOM
• Check the symptom based on the information obtained from the customer.
• Check if any other malfunctions are present.
>> GO TO 3.
3.
CHECK CONSULT SELF-DIAGNOSIS RESULTS
Connect CONSULT and perform “self-diagnosis”. Refer to
AWNIA2375GB
MWI
DIAGNOSIS AND REPAIR WORKFLOW (METER SYSTEM)
MWI-81
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Are self-diagnosis results normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
NARROW DOWN MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS
Perform symptom diagnosis and narrow down the malfunctioning parts.
>> GO TO 5.
5.
REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts.
>> GO TO 6.
6.
FINAL CHECK
Check that the warning buzzer in the combination meter operates normally.
Does it operate normally?
YES
>> Inspection End.
NO
>> GO TO 1.
MWI-82
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000010122412
CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent error detectability. Many
electronic control units are equipped onto vehicles, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with two communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to
LAN-37, "CAN COMMUNICATION SYSTEM : CAN Communica-
DTC Logic
INFOID:0000000010122413
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000010122414
1.
PERFORM SELF DIAGNOSTIC RESULT
1. Turn power switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of “METER/M&A”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Refer to
LAN-17, "Trouble Diagnosis Flow Chart"
NO
>> Refer to
GI-53, "Intermittent Incident"
.
DTC
Display contents of
CONSULT
Diagnostic item is detected when...
Probable malfunction location
U1000
CAN COMM CIRCUIT
[U1000]
When combination meter is not transmitting or
receiving CAN communication signal for 2
seconds or more.
CAN communication system
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