2008 NISSAN TIIDA ec-412

COOLING FAN
CO-15
< SERVICE INFORMATION >
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Removal and InstallationINFOID:0000000001702537
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-8, "Changing Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-16, "
Component".
3. Remove reservoir tank. Refer to CO-11, "
Component".
4. Disconnect radiator hose (upper) at radiator side. Refer to CO-11, "
Component".
5. Disconnect harness connectors from fan motor, and move harness to aside.
6. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch the radiator core.
INSTALLATION
Installation is the reverse order of removal.
• Cooling fans are controlled by ECM. For details, refer to EC-412
.
CAUTION:
Be careful not to damage or scratch the radiator core.
DISASSEMBLY AND ASSEMBLYINFOID:0000000001702538
Disassembly
1. Remove cooling fan from fan motor.
2. Remove fan motor from fan shroud.
Inspection After Disassembly
Inspect cooling fan for crack or unusual bend.
• If anything is found, replace cooling fan.
Assembly
Assembly is the reverse order of disassembly.

INDEX FOR DTC
EC-11
< SERVICE INFORMATION >
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P OP0731 0731 A/T 1ST GR FNCTNAT- 1 0 5
P0732 0732 A/T 2ND GR FNCTNAT- 1 0 8
P0733 0733 A/T 3RD GR FNCTNAT- 111
P0734 0734 A/T 4TH GR FNCTNAT- 11 4
P0740 0740 TCC SOLENOID/CIRCAT- 11 9
P0744 0744 A/T TCC S/V FNCTNAT- 1 2 4 (A/T),
CVT-93
(CVT)
P0745 0745 L/PRESS SOL/CIRCAT- 1 2 9
P0746 0746 PRS CNT SOL/A FCTNCVT-100
P0750 0750 SFT SOL A/CIRCAT- 1 3 4
P0755 0755 SFT SOL B/CIRCAT- 1 3 9
P0776 0776 PRS CNT SOL/B FCTNCVT-102
P0778 0778 PRS CNT SOL/B CIRCCVT-104
P0840 0840 TR PRS SENS/A CIRCCVT-109
P0845 0845 TR PRS SENS/B CIRCCVT-115
P0850 0850 P-N POS SW/CIRCUITEC-405
P1148 1148 CLOSED LOOP-B1EC-411
P1217 1217 ENG OVER TEMPEC-412
P1225 1225 CTP LEARNINGEC-426
P1226 1226 CTP LEARNINGEC-428
P1421 1421 COLD START CONTROLEC-430
P1564 1564 ASCD SWEC-432
P1572 1572 ASCD BRAKE SWEC-438
P1574 1574 ASCD VHL SPD SENEC-447
P1610 - P1615 1610 - 1615 NATS MALFUNCTIONBL-210
P1705 1705 TP SEN/CIRC CVTCVT-125
P1715 1715 IN PULY SPEEDEC-449 (A/T),
EC-450
(CVT)
P1740 1740 LU-SLCT SOL/CIRCCVT-132
P1760 1760 O/R CLTCH SOL/CIRCAT- 1 4 4
P1777 1777 STEP MOTR CIRCCVT-137
P1778 1778 STEP MOTR FNCCVT-141
P1805 1805 BRAKE SW/CIRCUITEC-452
P2100 2100 ETC MOT PWREC-456
P2101 2101 ETC FUNCTION/CIRCEC-461
P2103 2103 ETC MOT PWREC-456
P 2 11 8 2 11 8 E T C M O TEC-467
P 2 11 9 2 11 9 E T C A C T REC-472
P2122 2122 APP SEN 1/CIRCEC-474
P2123 2123 APP SEN 1/CIRCEC-474
P2127 2127 APP SEN 2/CIRCEC-480
P2128 2128 APP SEN 2/CIRCEC-480
P2135 2135 TP SENSOREC-487
DTC*1
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC
EC-13
< SERVICE INFORMATION >
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P OC L O S E D L O O P - B 1 P 11 4 8 11 4 8EC-411
CMP SEN/CIRC-B1 P0340 0340EC-302
COLD START CONTROL P1421 1421EC-430
CONTROL UNIT(CAN) U1010 1010EC-145
CTP LEARNING P1225 1225EC-426
CTP LEARNING P1226 1226EC-428
CYL 1 MISFIRE P0301 0301EC-284
CYL 2 MISFIRE P0302 0302EC-284
CYL 3 MISFIRE P0303 0303EC-284
CYL 4 MISFIRE P0304 0304EC-284
ECM P0605 0605EC-397
ECT SEN/CIRC P0117 0117EC-187
ECT SEN/CIRC P0118 0118EC-187
ECT SENSOR P0125 0125 EC-198
ENG OVER TEMP P1217 1217EC-412
ENGINE SPEED SIG P0725 0725AT- 1 0 1
ETC ACTR P2119 2119EC-472
ETC FUNCTION/CIRC P2101 2101EC-461
ETC MOT P2118 2118EC-467
ETC MOT PWR P2100 2100EC-456
ETC MOT PWR P2103 2103EC-456
EVAP GROSS LEAK P0455 0455EC-370
EVAP PURG FLOW/MON P0441 0441EC-313
EVAP SMALL LEAK P0442 0442EC-318
EVAP SYS PRES SEN P0451 0451EC-351
EVAP SYS PRES SEN P0452 0452EC-355
EVAP SYS PRES SEN P0453 0453EC-362
EVAP VERY SML LEAK P0456 0456EC-377
FTT SEN/CIRCUIT P0182 0182EC-274
FTT SEN/CIRCUIT P0183 0183EC-274
FTT SENSOR P0181 0181EC-270
FUEL LEV SEN SLOSH P0460 0460EC-385
FUEL LEVEL SENSOR P0461 0461EC-387
FUEL LEVL SEN/CIRC P0462 0462EC-389
FUEL LEVL SEN/CIRC P0463 0463EC-389
FUEL SYS-LEAN-B1 P0171 0171EC-257
FUEL SYS-RICH-B1 P0172 0172EC-264
HO2S2 (B1) P0137 0137EC-233
HO2S2 (B1) P0138 0138EC-240
HO2S2 (B1) P0139 0139EC-250
HO2S2 HTR (B1) P0037 0037EC-156
HO2S2 HTR (B1) P0038 0038EC-156
Items
(CONSULT-II screen terms)DTC*1
Reference page
CONSULT-II
GST*
2ECM*3

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-49
< SERVICE INFORMATION >
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P OVEH SPD SEN/CIR AT*7P0720 0720 — — 2×AT- 9 6 (A/T),
CVT-80
(CVT)
ENGINE SPEED SIG P0725 0725 — — 2×AT- 1 0 1
A/T 1ST GR FNCTN P0731 0731 — — 2×AT- 1 0 5
A/T 2ND GR FNCTN P0732 0732 — — 2×AT- 1 0 8
A/T 3RD GR FNCTN P0733 0733 — — 2×AT- 111
A/T 4TH GR FNCTN P0734 0734 — — 2×AT- 11 4
TCC SOLENOID/CIRC P0740 0740 — — 2×AT- 11 9
A/T TCC S/V FNCTN P0744 0744 — — 2×AT- 1 2 4 (A/T),
CVT-93
(CVT)
L/PRESS SOL/CIRC P0745 0745 — — 2×AT- 1 2 9
PRS CNT SOL/A FCTN P0746 0746 — — 1×CVT-100
SFT SOL A/CIRC P0750 0750 — — 1×AT- 1 3 4
SFT SOL B/CIRC P0755 0755 — — 1×AT- 1 3 9
PRS CNT SOL/B FCTN P0776 0776 — — 2×CVT-102
PRS CNT SOL/B CIRC P0778 0778 — — 2×CVT-104
TR PRS SENS/A CIRC P0840 0840 — — 2×CVT-109
TR PRS SENS/B CIRC P0845 0845 — — 2×CVT-115
P-N POS SW/CIRCUIT P0850 0850 — — 2×EC-405
CLOSED LOOP-B1 P1148 1148 — — 1×EC-411
ENG OVER TEMP P1217 1217 — — 1×EC-412
CTP LEARNING P1225 1225 — — 2 —EC-426
CTP LEARNING P1226 1226 — — 2 —EC-428
COLD START CONTROL P1421 1421 — — 2×EC-430
ASCD SW P1564 1564 — — 1 —EC-432
ASCD BRAKE SW P1572 1572 — — 1 —EC-438
ASCD VHL SPD SEN P1574 1574 — — 1 —EC-447
NATS MALFUNCTIONP1610 -
P16151610 - 1615 — — 2 —BL-210
TP SEN/CIRC A/T P1705 1705 — — 1×CVT-125
IN PULY SPEED P1715 1715 — — 2 —EC-449 (A/T),
EC-450
(CVT)
LU-SLCT SOL/CIRC P1740 1740 — — 2×CVT-132
O/R CLTCH SOL/CIRC P1760 1760 — — 2×AT- 1 4 4
STEP MOTR CIRC P1777 1777 — — 1×CVT-137
STEP MOTR FNC P1778 1778 — — 2×CVT-141
BRAKE SW/CIRCUIT P1805 1805 — — 2 —EC-452
ETC MOT PWR P2100 2100 — — 1×EC-456
ETC FUNCTION/CIRC P2101 2101 — — 1×EC-461
ETC MOT PWR P2103 2103 — — 1×EC-456
ETC MOT P2118 2118 — — 1×EC-467
ETC ACTR P2119 2119 — — 1×EC-472
APP SEN 1/CIRC P2122 2122 — — 1×EC-474
APP SEN 1/CIRC P2123 2123 — — 1×EC-474
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Test limit
(GST only)TripMIL lighting
upReference
page CONSULT-II
GST*
2ECM*3

EC-412
< SERVICE INFORMATION >
DTC P1217 ENGINE OVER TEMPERATURE
DTC P1217 ENGINE OVER TEMPERATURE
System DescriptionINFOID:0000000001702929
SYSTEM DESCRIPTION
NOTE:
•If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-143
.
•If DTC P1217 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-145
.
Cooling Fan Control
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
Models with A/C
Models without A/C
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
1
Cooling fan
controlIPDM E/R
(Cooling fan relays) Battery
Battery voltage*
1
Wheel sensor
Vehicle speed*2
Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch
Air conditioner ON signal*
2
Refrigerant pressure sensor Refrigerant pressure
PBIB2483E
PBIB3335E

TROUBLE DIAGNOSIS
MTC-45
< SERVICE INFORMATION >
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Check continuity between A/C defrost switch harness connector
M41 terminal 16 and ground.
OK or NG
OK >> Replace defrost A/C switch.
NG >> Repair harness or connector.
Insufficient CoolingINFOID:0000000001704306
SYMPTOM: Insufficient cooling
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
1. Turn temperature control dial counterclockwise to maximum cold position.
2. Check for cold air at discharge air outlets.
Can the symptom be duplicated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to MTC-30, "
Operational Check".
Does another symptom exist?
YES >> Refer to MTC-22, "How to Perform Trouble Diagnosis for Quick and Accurate Repair".
NO >> System OK.
3.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.CHECK COMPRESSOR DRIVE BELT TENSION
Check compressor belt tension. Refer to EM-13, "
Checking Drive Belts".
OK or NG
OK >> GO TO 5.
NG >> Adjust or replace compressor belt. Refer to EM-13, "
Removal and Installation".
5.CHECK AIR MIX DOOR CABLE
Check and verify air mix door cable operation. Refer to MTC-64, "
Air Mix Door Cable Adjustment".
Does air mix door operate correctly?
YES >> GO TO 6.
NO >> Repair or replace as necessary.
6.CHECK COOLING FAN MOTOR OPERATION
Check and verify cooling fan motor for smooth operation. Refer to EC-412, "
System Description".
Does cooling fan motor operate correctly?
YES >> GO TO 7.
NO >> Check cooling fan motor. Refer to EC-412
.
7.CHECK FOR EVAPORATOR FREEZE UP
Start engine and run A/C. Check for evaporator freeze up.
Does evaporator freeze up?
YES >> Perform performance test diagnoses. Refer to "PERFORMANCE TEST DIAGNOSIS". 16 - Ground :Continuity should exist
WJIA2255E