Nissan Leaf. Manual — part 1255
VSP-40
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000010121576
OVERALL SEQUENCE
Reference 1···
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
1. Connect CONSULT and perform self-diagnosis. Refer to
.
2. When DTC is detected, follow the instructions below:
-
Record DTC and Freeze Frame Data.
Is any DTC detected?
YES
>> GO TO 5.
JSMIA0773GB
DIAGNOSIS AND REPAIR WORKFLOW
VSP-41
< BASIC INSPECTION >
C
D
E
F
G
H
I
J
K
M
A
B
VSP
N
O
P
NO
>> GO TO 4.
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 detected, erase DTC after repairing or replacing malfunctioning parts.
>> GO TO 6.
6.
FINAL CHECK
Check that the VSP system operates normally.
Does it operate normally?
YES
>> INSPECTION END
NO
>> GO TO 1.
VSP-42
< DTC/CIRCUIT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000010121577
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 detect ability. 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:0000000010121578
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000010121579
1.
PERFORM SELF DIAGNOSTIC
1. Turn power switch ON and wait for 2 seconds or more.
2. Perform self-diagnosis with CONSULT.
3. Check if the DTC “U1000” is detected in self-diagnosis results of “VSP”.
Is “U1000” detected?
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
When VSP control unit is not transmitting or
receiving CAN communication signal for 2
seconds or more.
CAN communication
U1010 CONTROL UNIT (CAN)
VSP-43
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
VSP
N
O
P
U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000010121580
Initial diagnosis of VSP control unit.
DTC Logic
INFOID:0000000010121581
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000010121582
1.
PERFORM SELF DIAGNOSTIC
1. Turn power switch ON.
2. Perform self-diagnosis with CONSULT.
3. Check if the DTC “U1010” is detected in self-diagnosis results of “VSP”.
Is “U1010” detected?
YES
>> Replace VSP control unit. Refer to
VSP-67, "Removal and Installation"
.
NO
>> INSPECTION END
DTC
Display contents of CON-
SULT
Diagnostic item is detected when...
Probable malfunction location
U1010
CONTROL UNIT (CAN)
When detecting error during the initial diagno-
sis of the CAN controller of VSP control unit.
VSP control unit
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