Nissan Maxima. Instruction — part 1057
B2602 SHIFT POSITION
SEC-53
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
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L
M
A
B
SEC
N
O
P
B2602 SHIFT POSITION
Description
INFOID:0000000010051963
BCM confirms the shift position with the following 2 signals.
• CVT selector lever
• Speed signal from meter
DTC Logic
INFOID:0000000010051964
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 the engine under the following conditions and wait for at least 10 seconds.
-
CVT selector lever is in the P or N position
-
Depress the brake pedal.
2. Drive the vehicle for at least 10 seconds at a speed greater than 4 km/h (2 MPH).
3. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051965
Regarding Wiring Diagram information, refer to
.
1.
CHECK DTC WITH “COMBINATION METER”
Check “Self diagnostic result” with CONSULT. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK CVT SHIFT SELECTOR POWER SUPPLY
1. Turn ignition switch to ACC.
2. Disconnect CVT shift selector harness connector.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2602
SHIFT POSITION
BCM detects the following status for 10 seconds.
• Shift position is in P position
• Vehicle speed is 4km/h (2 MPH) or more
• Ignition switch is in the ON position
• Harness or connectors
(CVT drive circuit is open or shorted)
• CVT shift selector
• Combination meter
SEC-54
< DTC/CIRCUIT DIAGNOSIS >
B2602 SHIFT POSITION
3. Check voltage between CVT shift selector harness connector
M78 terminal 8 and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK CVT SHIFT SELECTOR POWER SUPPLY CIRCUIT
1. Disconnect BCM harness connector.
2. Check continuity between BCM harness connector M19 (A) ter-
minal 84 and CVT shift selector harness connector M78 (B) ter-
minal 8.
3. Check continuity between BCM harness connector M19 (A) ter-
minal 84 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
NO
>> Repair harness or connector.
4.
CHECK CVT SHIFT SELECTOR CIRCUIT
1. Disconnect BCM harness connector.
2. Check continuity between CVT shift selector harness connector
M78 (B) terminal 9 and BCM harness connector M19 (A) termi-
nal 87.
3. Check continuity between BCM harness connector M19 (A) ter-
minal 87 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair harness or connector.
5.
CHECK CVT SHIFT SELECTOR
SEC-52, "Component Inspection"
.
Is the inspection result normal?
CVT shift selector
Ground
Voltage [V]
Connector
Terminal
M78
8
Ground
Battery voltage
ALKIA1349ZZ
BCM
CVT shift selector
Continuity
Connector
Terminal
Connector
Terminal
A: M19
84
B: M78
8
Yes
BCM
Ground
Continuity
Connector
Terminal
A: M19
84
Ground
No
ALKIA0445ZZ
BCM
CVT shift selector
Continuity
Connector
Terminal
Connector
Terminal
A: M19
87
B: M78
9
Yes
BCM
Ground
Continuity
Connector
Terminal
A: M19
87
Ground
No
ALKIA0446ZZ
B2602 SHIFT POSITION
SEC-55
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
YES
>> GO TO 6.
NO
>> Replace CVT shift selector. Refer to
TM-170, "Removal and Installation"
6.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
.
>> Inspection End.
SEC-56
< DTC/CIRCUIT DIAGNOSIS >
B2603 SHIFT POSITION STATUS
B2603 SHIFT POSITION STATUS
Description
INFOID:0000000010051966
BCM confirms the shift position with the following 2 signals.
• CVT selector lever
• P/N position switch
DTC Logic
INFOID:0000000010051967
DTC DETECTION LOGIC
NOTE:
• If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2603 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 the engine under the following conditions and wait for at least 1 second.
-
CVT selector lever is in the P position.
-
Do not depress the brake pedal.
2. Shift to N and wait for at least 1 second.
3. Shift to any gear other than P or N and wait for at least 1 second.
4. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051968
Regarding Wiring Diagram information, refer to
.
1.
CHECK DTC WITH IPDM E/R
Check “Self diagnostic result” with CONSULT. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK TRANSMISSION RANGE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM harness connector and BCM harness connector.
DTC
Self-diagnosis
name
DTC detecting condition
Possible causes
B2603
SHIFT POSITION
STATUS
BCM detects the followings status for 500 ms or more when
shift is in P position and, ignition switch is in ON position.
• transmission range switch: approx. 0V
• CVT shift selector: approx. 0V
• Harness or connector
(CVT shift selector circuit is
open or shorted.)
• Harness or connectors
[transmission range switch
circuit is open or shorted.]
• CVT shift selector
• Transmission range switch
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