INTELLIGENT KEY UNIT
SEC-69
< ECU DIAGNOSIS INFORMATION >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Fail Safe
INFOID:0000000007818259
Fail-safe operation
The Intelligent Key system operation will be interrupted if the Intelligent Key unit loses power or communica-
tion with the BCM.
DTC Inspection Priority Chart
INFOID:0000000007355741
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC Index
INFOID:0000000007355742
NOTE:
Details of time display
• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-
tion switch OFF
→
ON again.
• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→
2
→
3...38
→
39 after returning to the normal condition whenever ignition switch OFF
→
ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF
→
ON after returning to the normal condition if the malfunction is detected again.
Terminal
Wire
Color
Signal Designation
Condition
Voltage (V)
Approx.
Ignition
Switch Posi-
tion
Operation or Conditions
1
R/B
Power source (fuse)
LOCK
—
Battery voltage
2
O
Steering lock solenoid
power supply
LOCK
—
5
3
V
Steering lock solenoid
communication signal
LOCK
When Intelligent Key is inside ve-
hicle, press ignition knob switch.
Other than the above
5
4
SB
Steering lock solenoid
ground
—
—
0
SIIA1911J
Priority
DTC
1
• U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
• B2552: INTELLIGENT KEY
2
• B2013: STRG COMM 1
• B2590: NATS MALFUNCTION
CONSULT display
Detection condition
Fail-safe
Diagnosis
No DTC is detected.
further testing
may be required.
—
—
—
U1000: CAN COMM CIRCUIT
Intelligent Key unit cannot receive CAN communi-
cation signal continuously for 2 seconds or more.
—
Check CAN communi-
cation system.
Refer to
SEC-28
.
U1010: CONTROL UNIT (CAN)
Intelligent Key unit detects internal CAN communi-
cation circuit malfunction.
—
Replace Intelligent Key
unit. Refer to
SEC-114
.
August 2012
2012 Pathfinder
2012 Pathfinder