Infiniti G35 (V35). Manual - part 410

DTC P1211 TCS CONTROL UNIT

EC-521

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EC

DTC P1211 TCS CONTROL UNIT

PFP:47850

Description

NBS000X3

The malfunction information related to TCS is transferred through the CAN communication line from VDC/
TCS/ABS control unit to ECM.
Be sure to erase the malfunction information such as DTC not only for VDC/TCS/ABS control unit but
also for ECM after TCS related repair.

On Board Diagnosis Logic

NBS000X4

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

NBS000X5

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-521, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

Diagnostic Procedure

NBS000X6

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 
VDC/TCS/ABS control unit.

●

VDC/TCS/ABS control unit

●

TCS related parts

SEF058Y

EC-522

DTC P1212 TCS COMMUNICATION LINE

DTC P1212 TCS COMMUNICATION LINE

PFP:47850

Description

NBS000X7

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 VDC/TCS/ABS control unit.
Be sure to erase the malfunction information such as DTC not only for VDC/TCS/ABS control unit but
also for ECM after TCS related repair.

On Board Diagnosis Logic

NBS000X8

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

NBS000X9

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-522, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

Diagnostic Procedure

NBS000XA

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 VDC/TCS/ABS control unit continu-
ously.

●

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

●

VDC/TCS/ABS control unit

●

Dead (Weak) battery

SEF058Y

DTC P1217 ENGINE OVER TEMPERATURE

EC-523

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DTC P1217 ENGINE OVER TEMPERATURE

PFP:00000

Description

NBS000XB

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.

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

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)

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

EC-524

DTC P1217 ENGINE OVER TEMPERATURE

Cooling Fan Relay Operation

The ECM controls cooling fan relays in the IPDM E/R through CAN communication line.

COMPONENT DESCRIPTION
Cooling Fan Motor

The cooling fan operates at each speed when the current flows in the cooling fan motor as follows.

CONSULT-II Reference Value in Data Monitor Mode

NBS000XC

Specification data are reference values.

On Board Diagnosis Logic

NBS000XD

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.

Cooling fan speed

Cooling fan relay

1

2

3

Stop

OFF

OFF

OFF

Low

ON

OFF

OFF

High

ON

ON

ON

Cooling fan speed

Cooling fan motor terminals

(+)

(

−

)

Low

1

4

2

3

High

1 and 2

3 and 4

MONITOR ITEM

CONDITION

SPECIFICATION

AIR COND SIG

●

Engine: After warming up, idle 
the engine

Air conditioner switch: OFF

OFF

Air conditioner switch: ON
(Compressor operates.)

ON

COOLING FAN

●

Engine: After warming up, idle 
the engine

●

Air conditioner switch: OFF

Engine coolant temperature is 97

°

C 

(206

°

F) or less

OFF

Engine coolant temperature is 
between 98

°

C (208

°

F) and 99

°

C 

(210

°

F)

LOW

Engine coolant temperature is 100

°

C 

(212

°

F) or more

HI

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.)

●

Cooling fan

●

IPDM E/R (Cooling fan relays)

●

Radiator hose

●

Radiator

●

Radiator cap

●

Water pump

●

Thermostat

For more information, refer to 

EC-533, 

"Main 12 Causes of Overheating"

 .