Nissan Quest E52. Instruction — part 940
PCS
B2614 ACC RELAY CIRCUIT
PCS-57
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
DTC/CIRCUIT DIAGNOSIS
B2614 ACC RELAY CIRCUIT
DTC Logic
INFOID:0000000009652879
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch to ACC, and wait for 1 second or more.
2.
Check “Self-diagnosis result” of BCM with CONSULT.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009652880
1.
CHECK ACCESSORY RELAY CONTROL SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
2.
CHECK ACCESSORY RELAY CONTROL SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and accessory relay.
3.
Check continuity between BCM harness connector and accessory relay harness connector.
4.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2614
BCM
The following status are compared, and it does not
agree for 1 second or more.
• State of accessory relay control judgment in BCM
• State of accessory relay control signal
• Harness or connectors (Accessory
relay control signal circuit)
• BCM
• Accessory relay
(+)
(–)
Condition
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M124
96
Ground
Ignition switch
OFF
0 - 0.5
ACC or ON
9 - 16
BCM
Accessory relay
Continuity
Connector
Terminal
Terminal
M124
96
Coil upstream side
Existed
BCM
Ground
Continuity
Connector
Terminal
M124
96
Not existed
PCS-58
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B2614 ACC RELAY CIRCUIT
3.
CHECK ACCESSORY RELAY
PCS-58, "Component Inspection"
.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
NO
>> Replace accessory relay.
Component Inspection
INFOID:0000000009652881
1.
CHECK ACCESSORY RELAY
1.
Turn ignition switch OFF.
2.
Remove accessory relay.
3.
Check the continuity between accessory relay terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accessory relay
Terminals
Condition
Continuity
3 and 5
12 V direct current supply between terminals 1 and 2
Existed
No current supply
Not existed
PBIB0098E
PCS
B2615 BLOWER RELAY CIRCUIT
PCS-59
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
B2615 BLOWER RELAY CIRCUIT
DTC Logic
INFOID:0000000009652882
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON, and wait for 1 second or more.
2.
Check “Self-diagnosis result” with CONSULT.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009652883
1.
CHECK BLOWER RELAY CONTROL SIGNAL
Check voltage between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
2.
CHECK BLOWER RELAY CONTROL SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and blower relay.
3.
Check continuity between BCM harness connector and blower relay harness connector.
4.
Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK BLOWER RELAY
PCS-58, "Component Inspection"
.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2616
BCM
The following status are compared, and it does not
agree for 1 second or more.
• State of blower relay control judgment in BCM
• State of blower relay control signal
• Harness or connectors (Blower re-
lay control signal circuit)
• BCM
• Blower relay
(+)
(–)
Condition
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M124
106
Ground
Ignition switch
OFF or ACC
0 - 0.5
ON
9 - 16
BCM
Blower relay
Continuity
Connector
Terminal
Terminal
M124
106
Coil upstream side
Existed
BCM
Ground
Continuity
Connector
Terminal
M124
106
Not existed
PCS-60
< DTC/CIRCUIT DIAGNOSIS >
[POWER DISTRIBUTION SYSTEM]
B2615 BLOWER RELAY CIRCUIT
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-98, "Removal and Installation"
NO
>> Replace blower relay.
Component Inspection
INFOID:0000000009652884
1.
CHECK BLOWER RELAY
1.
Turn blower switch OFF.
2.
Remove blower relay.
3.
Check the continuity between blower relay terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace blower relay
Terminals
Condition
Continuity
3 and 5
12 V direct current supply between terminals 1 and 2
Existed
No current supply
Not existed
PBIB0098E
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