Nissan Terrano model r20 series 2004. Instruction — part 180
Overall Function Check
Use this procedure to check the overall function of the cooling fan.
During this check, a DTC might not be confirmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could be caused by high pressure fluid escaping from
the radiator.
Wrap a thick cloth around the cap. Carefully remove the cap
by turning it a quarter turn to allow built-up pressure to
escape. Then turn the cap all the way off.
WITH CONSULT-II
1) Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to “Diagnos-
tic Procedure”, EC-444.
2) Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to “Diagnos-
tic Procedure”, EC-444.
3) Turn ignition switch “ON”.
4) Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II and make sure that cooling fans operate.
If NG, go to “Diagnostic Procedure”, EC-444.
WITHOUT CONSULT-II
1) Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to “Diagnos-
tic Procedure”, EC-444.
2) Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to “Diagnos-
tic Procedure”, EC-444.
3) Start engine.
Be careful not to overheat engine.
4) Set temperature control lever to full cold position.
5) Turn air conditioner switch “ON”.
6) Turn blower fan switch “ON”.
7) Run engine at idle for a few minutes with air conditioner oper-
ating.
Be careful not to overheat engine.
8) Make sure that cooling fans operate at low speed.
9) Turn ignition switch “OFF”.
10) Turn air conditioner switch and blower fan switch “OFF”.
11) Disconnect engine coolant temperature sensor harness con-
nector.
12) Connect 150
Ω
resistor to engine coolant temperature sensor
harness connector.
13) Start engine and make sure that cooling fans operate at higher
speed than low speed.
Be careful not to overheat engine.
14) If NG, go to “Diagnostic Procedure”, EC-444.
AEC640
SEF111X
SEC163BA
MEC475B
DTC P1217 OVER HEAT
TD27Ti
EC-442
Wiring Diagram
LHD MODELS
YEC681A
DTC P1217 OVER HEAT
TD27Ti
EC-443
Diagnostic Procedure
INSPECTION START
CHECK OVERALL FUNCTION.
With CONSULT-II
1. Turn ignition switch “ON”.
2. Perform “COOLING FAN” in “ACTIVE
TEST” mode with CONSULT-II.
3. Make sure that cooling fan operate.
Without CONSULT-II
1. Start engine and let it idle.
2. Set temperature lever at full cold posi-
tion.
3. Turn air conditioner switch “ON”.
4. Turn blower fan switch “ON”.
5. Make sure that cooling fan operate.
NG
E
OK
Go to “
q
C
”, EC-447.
CHECK COOLING FAN RELAY POWER
SUPPLY CIRCUIT.
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan relay.
3. Check voltage between cooling fan
relay terminal
q
3
and ground with
CONSULT-II or tester.
Voltage: Battery voltage
OK
E
NG
Check the following.
I
30A fuse
I
Harness for open or
short between cooling
fan relay and battery
If NG, repair or replace
harness or fuse.
CHECK COOLING FAN MOTOR AND
CONDENSER CIRCUIT.
1. Disconnect cooling fan relay harness
connector, cooling fan motor harness
connector and condenser harness con-
nector.
2. Check continuity as follows. Refer to
wiring diagram.
OK
E
NG
Check the following.
I
Harness connectors
M785
,
F67
I
Harness for open or
short between cooling
fan relay and cooling fan
motor
I
Harness for open or
short between cooling
fan relay and condenser
If NG, repair harness or
connectors.
q
A
Cooling fan relay terminal
q
5
and cooling fan motor terminal
q
1
Continuity
should
exist.
Cooling fan relay terminal
q
5
and condenser terminal
q
1
SEF646X
SEC163BA
MEC940D
H
H
H
H
DTC P1217 OVER HEAT
TD27Ti
EC-444
q
A
CHECK COOLING FAN MOTOR AND
CONDENSER GROUND CIRCUIT.
1. Check continuity between cooling fan
motor terminal
q
2
and ground. Refer to
wiring diagram.
Continuity should exist.
2. Check continuity between condenser
terminal
q
2
and ground. Refer to wiring
diagram.
Continuity should exist.
If OK, reconnect harness connectors.
OK
E
NG
Repair harness or connec-
tors.
CHECK COMPONENT
(Cooling fan relay).
Refer to “COMPONENT INSPECTION” on
page EC-449.
OK
CHECK A/C RELAY POWER SUPPLY
CIRCUIT.
1. Disconnect A/C relay.
2. Check voltage between A/C relay ter-
minal
q
2
,
q
3
and ground.
Voltage: Battery voltage
OK
E
NG
Check the following.
I
Harness connectors
F120
,
M812
I
10A fuse
I
Harness for open or
short between A/C relay
and fuse
If NG, repair or replace
harness or fuse.
CHECK A/C RELAY AND COOLING FAN
RELAY CIRCUIT.
1. Disconnect A/C relay and cooling fan
relay.
2. Check continuity between A/C relay
terminal
q
5
and cooling fan relay termi-
nal
q
2
. Refer to wiring diagram.
Continuity should exist.
OK
E
NG
Repair harness or connec-
tors.
CHECK ECM INPUT SIGNAL CIRCUIT.
1. Disconnect ECM harness connector.
2. Check continuity as follows. Refer to
wiring diagram.
OK
E
NG
Check the following.
I
Harness connectors
M812
,
F120
I
Harness connectors
M787
,
F66
I
Harness for open or
short between A/C relay
and ECM
I
Harness for open or
short between cooling
fan relay and ECM
If NG, repair harness or
connectors.
q
B
ECM terminal
204
and A/C
relay terminal
q
1
Continuity
should
exist.
ECM terminal
219
and cool-
ing fan relay terminal
q
1
PBIB0185E
H
H
H
H
H
H
DTC P1217 OVER HEAT
TD27Ti
Diagnostic Procedure (Cont’d)
EC-445
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст