Infiniti QX56 (Z62). Manual — part 1183
SEC-122
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B26FC KEY REGISTRATION
B26FC KEY REGISTRATION
DTC Logic
INFOID:0000000006226280
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Perform initialization of BCM and reregistration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
2.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
SEC-122, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226281
1.
REPLACE INTELLIGENT KEY
1.
Prepare Intelligent Key that matches the vehicle.
2.
Perform initialization of BCM and registration of Intelligent Key using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
3.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> GO TO 2.
NO
>> INSPECTION END
2.
REPLACE BCM
1.
Replace BCM. Refer to
BCS-81, "Removal and Installation"
.
2.
Perform initialization of BCM and registration of all Intelligent Keys using CONSULT-III.
For initialization and registration procedures, refer to CONSULT-III Operation Manual NATS-IVIS/NVIS.
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B26FC
KEY REGISTRATION
Intelligent Key that does not match the vehicle is
registered.
• Improper registration operation
• Intelligent Key
• BCM
B209F CRANKING REQUEST CIRCUIT
SEC-123
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B209F CRANKING REQUEST CIRCUIT
DTC Logic
INFOID:0000000006226282
DTC DETECTION LOGIC
NOTE:
• DTC B209F can be detected even though the related circuit is not used in this vehicle.
• If DTC B209F is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait 1 second or more at idle speed.
2.
Drive vehicle for 1 second or more.
3.
Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES
>> Refer to
SEC-123, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226283
1.
CHECK CRANKING REQUEST SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between IPDM E/R harness connector and ground under the following conditions.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK CRANKING REQUEST SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Disconnect ECM connector.
4.
Check continuity between IPDM E/R harness connector and ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B209F
CRANK REQ CIR OPEN
When the following items do not match, a
malfunction is detected.
• Cranking request signal from ECM
• Starter control relay control signal from
ECM (CAN)
• Harness or connectors
(CAN communication line is open or
shorted.)
• Harness or connectors
(Cranking request signal circuit is open
or shorted.)
• IPDM E/R
• ECM
(+)
(–)
Condition
Voltage (V)
(Approx.)
IPDM E/R
Connector
Terminal
E13
23
Ground
Ignition switch ON
• Engine: Stopped
• Selector lever position: P
0
• Engine: Stopped
• Selector lever position:
Other than P
12
Engine running
12
SEC-124
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B209F CRANKING REQUEST CIRCUIT
5.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
REPLACE IPDM E/R
1.
Replace IPDM E/R. Refer to
PCS-32, "Removal and Installation"
.
2.
Perform DTC CONFIRMATION PROCEDURE for DTC B209F. Refer to
.
Is DTC detected?
YES
>> GO TO 4.
NO
>> INSPECTION END
4.
REPLACE ECM
1.
Replace ECM. Refer to
EC-535, "Removal and Installation"
2.
Perform “ADDITIONAL SERVICE WHEN REPLACING ECM”. Refer to
>> INSPECTION END
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E13
23
E80
165
Existed
IPDM E/R
Ground
Continuity
Connector
Terminal
E13
23
Not existed
B20A0 CRANKING REQUEST CIRCUIT
SEC-125
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B20A0 CRANKING REQUEST CIRCUIT
DTC Logic
INFOID:0000000006226284
DTC DETECTION LOGIC
NOTE:
• DTC B20A0 can be detected although the related circuit is not used in this vehicle.
• If DTC B20A0 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait 1 second or more at idle speed.
2.
Drive vehicle for 1 second or more.
3.
Check DTC in “Self Diagnostic Result” mode of “IPDM E/R” using CONSULT-III.
Is DTC detected?
YES
>> Refer to
SEC-125, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226285
1.
CHECK CRANKING REQUEST SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between IPDM E/R harness connector and ground under the following conditions.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK CRANKING REQUEST SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Disconnect ECM connector.
4.
Check continuity between IPDM E/R harness connector and ECM harness connector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B20A0
CRANK REQ CIR SHORT
When the following items do not match, a
malfunction is detected.
• Cranking request signal from ECM
• Starter control relay control signal from
ECM (CAN)
• Harness or connectors
(CAN communication line is open or
shorted.)
• Harness or connectors
(Cranking request signal circuit is open or
shorted.)
• IPDM E/R
• ECM
(+)
(–)
Condition
Voltage (V)
(Approx.)
IPDM E/R
Connector
Terminal
E13
23
Ground
Ignition switch ON
• Engine: Stopped
• Selector lever position: P
0
• Engine: Stopped
• Selector lever position:
Other than P
12
Engine running
12
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