Infiniti M35/M45 Y50. Manual - part 506

DTC P1211 TCS CONTROL UNIT

EC-497

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EC

DTC P1211 TCS CONTROL UNIT

PFP:47850

Description

NBS0052U

The malfunction information related to TCS is transferred through the CAN communication line from “ABS
actuator and electric unit (control unit)” to ECM.
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

NBS0052V

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

NBS0052W

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 60 seconds.

4.

If 1st trip DTC is detected, go to 

EC-497, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

Diagnostic Procedure

NBS0052X

Go to 

BRC-10, "TROUBLE DIAGNOSIS"

 .

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1211
1211

TCS control unit

ECM receives a malfunction information from
“ABS actuator electric unit (control unit)”

●

ABS actuator and electric unit (control 
unit)

●

TCS related parts

SEF058Y

EC-498

[VQ35DE]

DTC P1212 TCS COMMUNICATION LINE

DTC P1212 TCS COMMUNICATION LINE

PFP:47850

Description

NBS0052Y

NOTE:

●

If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to 

EC-161, "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-164, "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

NBS0052Z

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

NBS00530

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 

EC-498, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

Diagnostic Procedure

NBS00531

Go to 

BRC-10, "TROUBLE DIAGNOSIS"

 .

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 (con-
trol unit)” continuously.

●

Harness or connectors
(The CAN communication line is open or 
shorted.)

●

ABS actuator and electric unit (control unit)

●

Dead (Weak) battery

SEF058Y

DTC P1217 ENGINE OVER TEMPERATURE

EC-499

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EC

DTC P1217 ENGINE OVER TEMPERATURE

PFP:00000

Description

NBS00532

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-161, "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-164, "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-1 (2)

●

Cooling fan motor-2 (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

PBIB3352E

EC-500

[VQ35DE]

DTC P1217 ENGINE OVER TEMPERATURE

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.

●

: Vehicle front

●

Cooling fan motor-1 (2)

●

Cooling fan motor-2 (3)

CONSULT-II Reference Value in Data Monitor Mode

NBS00533

Specification data are reference values.

On Board Diagnosis Logic

NBS00534

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 

CO-11, "Changing Engine

Coolant"

 . Also, replace the engine oil. Refer to 

LU-9, "Changing Engine Oil"

 .

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

NBS00535

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.

PBIB3352E

MONITOR ITEM

CONDITION

SPECIFICATION

FAN DUTY

●

Engine: Running

0 - 100%

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1217
1217

Engine over tempera-
ture (Overheat)

●

Cooling fan does not operate properly (Over-
heat).

●

Cooling fan system does not operate prop-
erly (Overheat).

●

Engine coolant was not added to the system 
using the proper filling method.

●

Engine coolant is not within the specified 
range.

●

Harness or connectors
(The cooling fan circuit is open or 
shorted.)

●

IPDM E/R

●

Cooling fan control module

●

Cooling fan motor

●

Radiator hose

●

Radiator

●

Radiator cap

●

Water pump

●

Thermostat

For more information, refer to 

EC-507, 

"Main 12 Causes of Overheating"

 .