Nissan Cube. Manual - part 360

EC-326

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P1212 TCS COMMUNICATION LINE

P1212 TCS COMMUNICATION LINE

Description

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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.

DTC Logic

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DTC DETECTION LOGIC

NOTE:
• If DTC P1212 is displayed with DTC U1001, first perform the trouble diagnosis for DTC U1001. Refer

to 

EC-133, "DTC Logic"

.

• If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-314, "DTC Logic"

.

Freeze frame data is not stored in the ECM for this self-diagnosis.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for at least 10 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-326, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

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Go to 

GI-36, "Work Flow"

.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1212

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 short-
ed.)

• ABS actuator and electric unit (control unit)
• Dead (Weak) battery

P1217 ENGINE OVER TEMPERATURE

EC-327

< DTC/CIRCUIT DIAGNOSIS >

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P1217 ENGINE OVER TEMPERATURE

DTC Logic

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DTC DETECTION LOGIC

NOTE:
• If DTC P1217 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P1217 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer

to 

EC-314, "DTC Logic"

.

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.

CAUTION:

When a malfunction is indicated, be sure to replace the coolant. Refer to 

CO-8, "Draining"

. Also,

replace the engine oil. Refer to 

LU-9, "Refilling"

.

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-11, "Anti-Freeze Coolant Mixture Ratio"

.

2.

After refilling coolant, run engine to ensure that no water-flow noise is emitted.

DTC CONFIRMATION PROCEDURE

1.

PERFORM COMPONENT FUNCTION CHECK

Perform component function check. Refer to 

EC-327, "Component Function Check"

.

NOTE:
Use component function check to check the overall function of the cooling fan. During this check, a DTC might
not be confirmed.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-328, "Diagnosis Procedure"

.

Component Function Check

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1.

PERFORM COMPONENT FUNCTION CHECK-I

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.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1217

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.

• Engine coolant is not within the specified 

range.

• Harness or connectors

(The cooling fan circuit is open or 
shorted.)

• IPDM E/R (Cooling fan relay-1)
• Cooling fan relays-2 and -3
• Cooling fan motor
• Radiator  hose
• Radiator
• Radiator  cap
• Reservoir tank
• Water pump
• Thermostat
• Water control valve

EC-328

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P1217 ENGINE OVER TEMPERATURE

Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?

YES

>> Go to 

EC-328, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM COMPONENT FUNCTION CHECK-II

Confirm whether customer filled the coolant or not.

Did customer fill the coolant?

YES

>> Go to 

EC-328, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM COMPONENT FUNCTION CHECK-III

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT.

3.

Make sure that cooling fan motor operates at each speed (LOW/HI).

Without CONSULT

Perform IPDM E/R auto active test and check cooling fan motor operation. Refer to 

PCS-10, "Diagnosis

Description"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-328, "Diagnosis Procedure"

.

Diagnosis Procedure

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1.

CHECK COOLING FAN OPERATION

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT.

3.

Make sure that cooling fan motor operates at each speed (LOW/HI).

Without CONSULT

1.

Perform IPDM E/R auto active test and check cooling fan motor operation. Refer to 

PCS-10, "Diagnosis

Description"

.

2.

Make sure that cooling fan motor operates at each speed (Low/High).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to 

EC-402, "Diagnosis Procedure"

.

2.

CHECK COOLING SYSTEM FOR LEAK-I

Check cooling system for leak. Refer to 

CO-8, "Inspection"

.

Is leakage detected?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK COOLING SYSTEM FOR LEAK-II

Check the following for leak.
• Hose (Refer to 

CO-24, "Inspection"

.)

• Radiator (Refer to 

CO-16, "Inspection"

.)

• Water pump (Refer to 

CO-19, "Inspection"

.)

SEF621W

P1217 ENGINE OVER TEMPERATURE

EC-329

< DTC/CIRCUIT DIAGNOSIS >

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>> Repair or replace malfunctioning part.

4.

CHECK RADIATOR CAP

Check radiator cap. Refer to 

CO-12, "RADIATOR CAP : Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace radiator cap. Refer to 

CO-14, "Exploded View"

.

5.

CHECK THERMOSTAT

Check thermostat. Refer to 

CO-22, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Replace thermostat. Refer to 

CO-21, "Removal and Installation"

.

6.

CHECK WATER CONTROL VALVE

Check water control valve. Refer to 

CO-25, "Water Control Valve"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace water control valve. Refer to 

CO-23, "Exploded View"

.

7.

CHECK ENGINE COOLANT TEMPERATURE SENSOR

Refer to 

EC-165, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace engine coolant temperature sensor. Refer to 

CO-23, "Exploded View"

.

8.

CHECK MAIN 12 CAUSES

If the cause cannot be isolated, check the following.

Engine

Step

Inspection item

Equipment

Standard

Reference page

OFF

1

• Blocked radiator
• Blocked condenser
• Blocked radiator grille
• Blocked bumper

• Visual

No blocking

—

2

• Coolant mixture

• Coolant tester

MA-11, "Anti-Freeze Coolant Mixture Ratio"

3

• Coolant level

• Visual

Coolant up to MAX level 
in reservoir tank and ra-
diator filler neck

CO-8, "Inspection"

4

• Radiator cap

• Pressure tester

CO-12, "RADIATOR CAP : Inspection"

ON*

2

5

• Coolant leaks

• Visual

No leaks

CO-8, "Inspection"

ON*

2

6

• Thermostat

• Touch the upper and 

lower radiator hoses

Both hoses should be 
hot

CO-22, "Inspection"

ON*

1

7

• Cooling fan motor

• CONSULT

Operating

EC-402, "Component 
Function Check"

OFF

8

• Combustion gas leak

• Color checker chemi-

cal tester 4 Gas ana-
lyzer

Negative

—

ON*

3

9

• Coolant temperature 

gauge

• Visual

Gauge less than 3/4 
when driving

—

• Coolant overflow to 

reservoir tank

• Visual

No overflow during driv-
ing and idling

CO-8, "Inspection"

OFF*

4

10

• Coolant return from 

reservoir tank to radi-
ator

• Visual

Should be initial level in 
reservoir tank

CO-8, "Inspection"