Infiniti M35/M45 Y50. Manual — part 685
DTC P1212 TCS COMMUNICATION LINE
EC-1213
[VK45DE]
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DTC P1212 TCS COMMUNICATION LINE
PFP:47850
Description
NBS005KM
NOTE:
●
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to
EC-865, "DTC U1000, U1001 CAN COMMUNICATION LINE"
.
●
If DTC P1212 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to
EC-868, "DTC U1010 CAN COMMUNICATION"
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
On Board Diagnosis Logic
NBS005KN
Freeze frame data is not stored in the ECM for this self-diagnosis. The MIL will not light up for this self-
diagnosis.
DTC Confirmation Procedure
NBS005KO
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and let it idle for at least 10 seconds.
4.
If 1st trip DTC is detected, go to
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic Procedure
NBS005KP
.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1212
1212
TCS communication
line
ECM can not receive the information from
“ABS actuator and electric unit (control
unit)” continuously.
●
Harness or connectors
(The CAN communication line is open or
shorted.)
●
ABS actuator and electric unit (control unit)
●
Dead (Weak) battery
SEF058Y
EC-1214
[VK45DE]
DTC P1217 ENGINE OVER TEMPERATURE
DTC P1217 ENGINE OVER TEMPERATURE
PFP:00000
Description
NBS005KQ
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-865, "DTC U1000, U1001 CAN COMMUNICATION LINE"
.
●
If DTC P1217 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to
EC-868, "DTC U1010 CAN COMMUNICATION"
.
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.
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, air conditioner
ON signal, refrigerant pressure, target A/C evaporator temperature and A/C evaporator temperature.
Cooling fan control signal is sent to IPDM E/R from ECM by CAN communication line. Then, IPDM E/R sends
ON/OFF pulse duty signal to cooling fan control module. Corresponding to this ON/OFF pulse duty signal,
cooling fan control module gives cooling fan motor operating voltage to cooling fan motors. Cooling fan speed
is controlled by duty cycle of cooling fan motor operating voltage sent from cooling fan control module.
COMPONENT DESCRIPTION
Cooling Fan Control Module
Cooling fan control module (1) receives ON/OFF pulse duty signal
from IPDM E/R. Corresponding to this ON/OFF pulse duty signal,
cooling fan control module sends cooling fan motor operating volt-
age to cooling fan motor. The revolution speed of cooling fan motor
is controlled by duty cycle of the voltage.
●
: Vehicle front
●
Cooling fan motor-2 (2)
●
Cooling fan motor-1 (3)
Sensor
Input signal to ECM
ECM function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
1
Cooling fan
control
●
IPDM E/R
●
Cooling fan relay
●
Cooling fan control
module
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
Unified meter and A/C amp.
Target A/C evaporator temperature*
2
Intake sensor
A/C evaporator temperature*
2
PBIB3346E
DTC P1217 ENGINE OVER TEMPERATURE
EC-1215
[VK45DE]
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Cooling Fan Motor
Cooling fan motor receives cooling fan motor operating voltage from
cooling fan control module (1). The revolution speed of cooling fan
motor is controlled by duty cycle of the voltage.
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: Vehicle front
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Cooling fan motor-2 (2)
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Cooling fan motor-1 (3)
CONSULT-II Reference Value in Data Monitor Mode
NBS005KR
Specification data are reference values.
On Board Diagnosis Logic
NBS005KS
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant. Refer to
. Also, replace the engine oil. Refer to
1.
Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer to
MA-13, "Anti-Freeze Coolant Mixture Ratio"
2.
After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function Check
NBS005KT
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around 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.
PBIB3346E
MONITOR ITEM
CONDITION
SPECIFICATION
FAN DUTY
●
Engine: Running
0 - 100%
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1217
1217
Engine over temperature
(Overheat)
●
Cooling fan does not operate properly (Over-
heat).
●
Cooling fan system does not operate properly
(Overheat).
●
Engine coolant was not added to the system
using the proper filling method.
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Engine coolant is not within the specified
range.
●
Harness or connectors
(The cooling fan circuit is open or
shorted.)
●
IPDM E/R
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Cooling fan control module
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Cooling fan motor
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Radiator hose
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Radiator
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Radiator cap
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Water pump
●
Thermostat
●
Water control valve
For more information, refer to
EC-1216
[VK45DE]
DTC P1217 ENGINE OVER TEMPERATURE
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
2.
Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to
3.
Turn ignition switch ON.
4.
Perform “FAN DUTY CONTROL” in “ACTIVE TEST” mode with
CONSULT-II.
5.
Make sure that cooling fan speed varies according to the per-
cent.
6.
If the results are NG, go to
EC-1219, "Diagnostic Procedure"
.
WITH GST
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
2.
Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to
3.
Perform IPDM E/R auto active test and check cooling fan motors
operation, refer to
4.
If NG, go to
EC-1219, "Diagnostic Procedure"
.
SEF621W
PBIB2737E
SEF621W
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