Infiniti QX56 (Z62). Manual — part 1180
SEC-110
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B26F0 STEERING LOCK RELAY
Is the inspection normal?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
REPLACE STEERING LOCK UNIT
1.
Replace steering lock unit.
2.
Perform the service procedure for steering lock unit replacement. Refer to CONSULT-III Operation Man-
ual NATS-IVIS/NVIS.
>> INSPECTION END
4.
CHECK STEERING LOCK RELAY CIRCUIT
1.
Disconnect IPDM E/R connector and steering lock unit connector.
2.
Check continuity between IPDM E/R harness connector and steering lock unit harness connector.
3.
Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-32, "Removal and Installation"
NO
>> Repair or replace harness.
To lock the steering
1.
Set the selector lever in the P position.
2.
Turn the power supply position to the OFF position.
3.
Press any door switch.
To unlock the steering
1.
Set the selector lever in the P position.
2.
Press the push-button ignition switch with brake pedal not depressed.
IPDM E/R
Steering lock unit
Continuity
Connector
Terminal
Connector
Terminal
E14
46
M12
1
Existed
IPDM E/R
Ground
Continuity
Connector
Terminal
E14
46
Not existed
B26F3 STARTER CONTROL RELAY
SEC-111
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B26F3 STARTER CONTROL RELAY
DTC Logic
INFOID:0000000006226266
DTC DETECTION LOGIC
NOTE:
• If DTC B26F3 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B26F3 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Press push-button ignition switch under the following conditions to start engine.
-
Selector lever: In the P position
-
Brake pedal: Depressed
2.
Wait 2 seconds after engine started.
3.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
SEC-111, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226267
1.
CHECK DTC OF IPDM E/R
Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES
>> Perform the diagnosis procedure related to the detected DTC. Refer to
NO
>> GO TO 2.
2.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B26F3
START CONT RLY ON
BCM requests IPDM E/R to turn starter
control relay OFF, but BCM cannot receive
starter control relay OFF state signal from
IPDM E/R (CAN).
• Harness or connectors
(CAN communication line is open or
shorted.)
• IPDM E/R
SEC-112
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B26F4 STARTER CONTROL RELAY
B26F4 STARTER CONTROL RELAY
DTC Logic
INFOID:0000000006226268
DTC DETECTION LOGIC
NOTE:
• If DTC B26F4 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B26F4 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Press push-button ignition switch under the following conditions to start engine, and wait 1 second or
more.
-
Selector lever: In the P position
-
Brake pedal: Depressed
2.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
SEC-112, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226269
1.
CHECK DTC OF IPDM E/R
Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES
>> Perform the diagnosis procedure related to the detected DTC. Refer to
NO
>> GO TO 2.
2.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B26F4
START CONT RELAY
OFF
BCM requests IPDM E/R to turn starter control
relay ON, but BCM cannot receive starter control
relay ON state signal from IPDM E/R.
• Harness or connectors
(CAN communication line is open
or shorted.)
• IPDM E/R
B26F5 STEERING LOCK STATUS SWITCH
SEC-113
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B26F5 STEERING LOCK STATUS SWITCH
DTC Logic
INFOID:0000000006226270
DTC DETECTION LOGIC
NOTE:
• If DTC B26F5 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B26F5 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Shift selector lever to the P position.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF.
4.
Press driver side door switch.
5.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
SEC-113, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226271
1.
CHECK IPDM E/R INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check voltage between IPDM E/R harness connector and ground.
NOTE:
Is the inspection result normal?
YES
>> GO TO 4.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B26F5
STRG LCK STS SW
When BCM performs steering lock request
to IPDM E/R, steering lock state signal
from IPDM E/R is already lock state.
• Harness or connectors
(CAN communication line is open or
shorted.)
• Harness or connectors
(Steering lock unit circuit is open or
shorted.)
• Steering lock unit
• IPDM E/R
• BCM
(+)
(–)
Condition
Voltage (V)
(Approx.)
IPDM E/R
Connector
Terminal
E17
63
Ground
Steering lock unit
Lock
12
Unlock
0
65
Lock
0
Unlock
12
To lock the steering
1.
Set the selector lever in the P position.
2.
Turn the power supply position to the OFF position.
3.
Press any door switch.
To unlock the steering
1.
Set the selector lever in the P position.
2.
Press the push-button ignition switch with brake pedal not depressed.
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