Infiniti QX56 (Z62). Manual — part 1173
SEC-82
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2602 SHIFT POSITION
B2602 SHIFT POSITION
DTC Logic
INFOID:0000000006226233
DTC DETECTION LOGIC
NOTE:
• If DTC B2602 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2602 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine.
2.
Drive vehicle at a speed of 4 km/h (2.5 MPH) or more for 10 seconds or more.
3.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226234
1.
CHECK DTC OF COMBINATION METER
Check DTC in “Self Diagnostic Result” mode of “METER/M&A” using CONSULT-III.
Is DTC detected?
YES
>> Perform the trouble diagnosis related to the detected DTC. Refer to
.
NO
>> GO TO 2.
2.
CHECK A/T SHIFT SELECTOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect A/T shift selector (detention switch) connector.
3.
Check voltage between A/T shift selector (detention switch) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 3.
3.
CHECK A/T SHIFT SELECTOR POWER SUPPLY CIRCUIT
1.
Disconnect BCM connector.
2.
Check continuity between A/T shift selector (detention switch) harness connector and BCM harness con-
nector.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B2602
SHIFT POSITION
BCM detects the following status for 10 seconds.
• Selector lever is in the P position
• Vehicle speed is 4 km/h (2.5 MPH) or more
• Ignition switch is in the ON position
• Harness or connectors
(CAN communication line is open or
shorted.)
• Harness or connectors
[A/T shift selector (detention switch)
circuit is open or shorted.]
• A/T shift selector (detention switch)
• Combination meter
• BCM
(+)
(–)
Voltage (V)
(Approx.)
A/T shift selector (detention switch)
Connector
Terminal
M57
13
Ground
12
B2602 SHIFT POSITION
SEC-83
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
3.
Check continuity between A/T shift selector (detention switch) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
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
5.
CHECK A/T SHIFT SELECTOR CIRCUIT
1.
Disconnect BCM connector and IPDM E/R connector.
2.
Check continuity between A/T shift selector (detention switch) harness connector and BCM harness con-
nector.
3.
Check continuity between A/T shift selector (detention switch) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness.
6.
CHECK A/T SHIFT SELECTOR (DETENTION SWITCH)
SEC-83, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace A/T shift selector. Refer to
TM-176, "Removal and Installation"
7.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000006226235
1.
CHECK A/T SHIFT SELECTOR (DETENTION SWITCH)
1.
Turn ignition switch OFF.
2.
Disconnect A/T shift selector connector.
3.
Check continuity between A/T shift selector (detention switch) terminals.
A/T shift selector (detention switch)
BCM
Continuity
Connector
Terminal
Connector
Terminal
M57
13
M71
104
Existed
A/T shift selector (detention switch)
Ground
Continuity
Connector
Terminal
M57
13
Not existed
A/T shift selector (detention switch)
BCM
Continuity
Connector
Terminal
Connector
Terminal
M57
14
M68
37
Existed
A/T shift selector (detention switch)
Ground
Continuity
Connector
Terminal
M57
14
Not existed
SEC-84
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2602 SHIFT POSITION
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace A/T shift selector. Refer to
TM-176, "Removal and Installation"
A/T shift selector (detention switch)
Condition
Continuity
Terminal
13
14
Selector lever
P position
Not existed
Other than above
Existed
B2603 SHIFT POSITION
SEC-85
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B2603 SHIFT POSITION
DTC Logic
INFOID:0000000006226236
DTC DETECTION LOGIC
NOTE:
• If DTC B2603 is displayed with DTC B2601, first perform the trouble diagnosis for DTC B2601. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE 1
1.
Shift the selector lever to the P position.
2.
Turn ignition switch ON and wait 1 second or more.
3.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE 2
1.
Shift the selector lever to any position other than P, and wait 1 second or more.
2.
Check DTC in “Self Diagnostic Result” mode of “BCM” using CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006226237
1.
INSPECTION START
Perform inspection in accordance with procedure that confirms DTC.
Which procedure confirms DTC?
DTC confirmation procedure 1>>GO TO 2.
DTC confirmation procedure 2>>GO TO 6.
2.
CHECK DTC OF TCM
Check DTC in “Self Diagnostic Result” mode of “TCM” using CONSULT-III.
Is DTC detected?
YES
>> Perform the trouble diagnosis related to the detected DTC. Refer to
NO
>> GO TO 3.
3.
CHECK BCM INPUT SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between BCM harness connector and ground.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible causes
B2603
SHIFT POSI STATUS
BCM detects the following status when ignition
switch is in the ON position.
• P position signal from TCM: approx. 0 V
• A/T shift selector (detention switch) signal:
approx. 0 V
• Harness or connector
[A/T shift selector (detention switch)
circuit is open or shorted.]
• Harness or connectors
(TCM circuit is open or shorted.)
• A/T shift selector (detention switch)
• A/T assembly (TCM)
• BCM
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