Nissan Leaf. Manual — part 148
AV
U1A01 TCU
AV-583
< DTC/CIRCUIT DIAGNOSIS >
[TELEMATICS SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1A01 TCU
DTC Logic
INFOID:0000000010122757
DTC
Display contents of CON-
SULT
DTC detection condition
Action to take
U1A01
INTERNAL ERROR (TCU)
[U1A01]
Malfunction in TCU is detected.
• Check the connector wiring
and erase DTC.
• Replace TCU if the malfunc-
AV-584
< DTC/CIRCUIT DIAGNOSIS >
[TELEMATICS SYSTEM]
U1A02 TCU
U1A02 TCU
DTC Logic
INFOID:0000000010122758
DTC
Display contents of CON-
SULT
DTC detection condition
Action to take
U1A02
TEL COMMUNICATION
MODULE
[U1A02]
Malfunction on the communication module in TCU is de-
tected.
• Check the harness connec-
tion and erase DTC.
• Replace TCU if the malfunc-
tion constantly occurs. Re-
fer to
AV
U1A03 TCU
AV-585
< DTC/CIRCUIT DIAGNOSIS >
[TELEMATICS SYSTEM]
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
U1A03 TCU
DTC Logic
INFOID:0000000010122759
DTC
Display contents of CON-
SULT
DTC detection condition
Action to take
U1A03
SIM CARD
[U1A03]
SIM card is not inserted or unable to be read.
• Check if there is a contact mal-
function at the SIM card and
card slot.
• Check the harness connection
and erase DTC.
• Replace TCU if the malfunction
constantly occurs. Refer to
594, "Removal and Installa-
tion"
.
AV-586
< DTC/CIRCUIT DIAGNOSIS >
[TELEMATICS SYSTEM]
U1A04 TCU
U1A04 TCU
DTC Logic
INFOID:0000000010122760
DTC
Display contents of CON-
SULT
DTC detection condition
Action to take
U1A04
VIN UNFINISHED
[U1A04]
No write of VIN number is detected.
• Write VIN number using CON-
SULT. Refer to
TIONAL SERVICE WHEN
REPLACING TCU : Work Pro-
cedure"
• Replace TCU if the malfunction
is detected after VIN number is
written. Refer to
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