Nissan Maxima. Instruction — part 501
EC-488
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
COOLING FAN
• 40 A fusible link (letter M)
• Harness connector E12, E203
• Harness for open or short between cooling fan motor-1 and battery
>> Repair open circuit, short to ground or short to power in harness or connectors.
7.
CHECK COOLING FAN MOTOR CIRCUIT-I
1. Disconnect cooling fan motor-2 harness connector.
2. Check the continuity between cooling fan relay-2, -3 harness connectors and cooling fan motor-1, -2 har-
ness connectors.
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
• Joint connector-E02 E20
• Harness connector E12, E203
• Harness for open or short between cooling fan motor-1 and cooling fan relay-2
• Harness for open or short between cooling fan motor-1 and cooling fan relay-3
• Harness for open or short between cooling fan motor-2 and cooling fan relay-2
• Harness for open or short between cooling fan motor-2 and cooling fan relay-3
>> Repair open circuit, short to ground or short to power in harness or connectors.
9.
CHECK COOLING FAN MOTOR CIRCUIT-II
1. Check the continuity between IPDM E/R harness connector and cooling fan motor-1, -2 harness connec-
tor.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> GO TO 10.
10.
DETECT MALFUNCTIONING PART
Check the following.
• Joint connector-E02 E20
Cooling fan relay
Cooling fan motor
Continuity
Connector
Terminal
Connector
Terminal
E42
(cooling fan relay-2)
3
E221
(Cooling fan motor-2)
2
Existed
7
E220
(Cooling fan motor-1)
3
E43
(cooling fan relay-3)
3
E221
(Cooling fan motor-2)
1
7
E220
(Cooling fan motor-1)
4
IPDM E/R
Cooling fan motor
Continuity
Connector
Terminal
Connector
Terminal
E18
35
E220
(Cooling fan motor-1)
4
Existed
38
E221
(Cooling fan motor-2)
1
COOLING FAN
EC-489
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
• Harness connector E70, E305
• Harness for open or short between cooling fan motor-1 and IPDM E/R
• Harness for open or short between cooling fan motor-2 and IPDM E/R
>> Repair open circuit, short to ground or short to power in harness or connectors.
11.
CHECK COOLING FAN MOTOR CIRCUIT-III
1. Check the continuity between cooling fan relay-2, -3 harness connectors and ground.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
12.
CHECK COOLING FAN MOTOR CIRCUIT-IV
1. Check the continuity between cooling fan motor-2 harness connector and ground.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
13.
CHECK COOLING FAN RELAYS-2 AND -3
EC-490, "Component Inspection (Cooling Fan Relay)"
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Replace malfunctioning cooling fan relay.
14.
CHECK COOLING FAN MOTORS-1 AND -2
EC-489, "Component Inspection (Cooling Fan Motor)"
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace malfunctioning cooling fan motor. Refer to
CO-16, "Removal and Installation"
.
15.
CHECK INTERMITTENT INCIDENT
Perform
GI-41, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-35, "Removal and Installation"
.
NO
>> Repair or replace harness connectors.
Component Inspection (Cooling Fan Motor)
INFOID:0000000010095204
1.
CHECK COOLING FAN MOTOR
1. Turn ignition switch OFF.
Cooling fan motor
Ground
Continuity
Connector
Terminal
E42
(cooling fan relay-2)
6
Ground
Existed
E43
(cooling fan relay-3)
6
Cooling fan motor-2
Ground
Continuity
Connector
Terminal
E221
3
Ground
Existed
4
EC-490
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
COOLING FAN
2. Disconnect cooling fan motor harness connector.
3. Supply cooling fan motor terminals with battery voltage and
check operation.
Check that cooling fan speed of condition B is higher than that of A.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace cooling fan motor. Refer to
CO-16, "Removal and Installation"
Component Inspection (Cooling Fan Relay)
INFOID:0000000010095205
1.
CHECK COOLING FAN RELAY
1. Disconnect cooling fan relays -2, -3 harness connectors.
2. Check continuity between cooling fan relay -2, -3 terminals
under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace cooling fan relay.
Condition
Terminals
+
−
Cooling fan motor
A
1
3 and 4
2
3 and 4
1 and 2
3
1 and 2
4
B
1, 2
3, 4
SEF734W
Terminals
Conditions
Continuity
3 and 5
6 and 7
12 V direct current supply between terminals 1 and 2
Existed
No current supply
Not existed
SEF745U
ELECTRICAL LOAD SIGNAL
EC-491
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ELECTRICAL LOAD SIGNAL
Description
INFOID:0000000010095206
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred via
the CAN communication line from BCM to ECM via the IPDM E/R.
Component Function Check
INFOID:0000000010095207
1.
CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
1. Turn ignition switch ON.
2. Connect CONSULT and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Go to
2.
CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Go to
3.
CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000010095208
1.
INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to
Which circuit is related to the incident?
Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.
2.
CHECK REAR WINDOW DEFOGGER SYSTEM
.
Monitor item
Condition
Indication
LOAD SIGNAL
Rear window defogger switch
ON
ON
OFF
OFF
Monitor item
Condition
Indication
LOAD SIGNAL
Lighting switch
ON at 2nd position
ON
OFF
OFF
Monitor item
Condition
Indication
HEATER FAN SW
Heater fan control switch
ON
ON
OFF
OFF
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст