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Infiniti QX56 (JA60). Manual - part 412

EC-300

< COMPONENT DIAGNOSIS >

[VK56DE]

P1211 TCS CONTROL UNIT

P1211 TCS CONTROL UNIT

Description

INFOID:0000000005149342

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

INFOID:0000000005149343

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

INFOID:0000000005149344

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.
1. Start engine and let it idle for at least 60 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to

EC-300, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000005149345

Go to

BRC-23, "CONSULT-III Function (ABS)"

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

P1212 TCS COMMUNICATION LINE

EC-301

< COMPONENT DIAGNOSIS >

[VK56DE]

P1212 TCS COMMUNICATION LINE

Description

INFOID:0000000005149346

NOTE:

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

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

EC-288

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

INFOID:0000000005149347

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

INFOID:0000000005149348

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.
1. Start engine and let it idle for at least 10 seconds.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to

EC-301, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000005149349

Go to

BRC-23, "CONSULT-III Function (ABS)"

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 short-
ed.)

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

EC-302

< COMPONENT DIAGNOSIS >

[VK56DE]

P1217 ENGINE OVER TEMPERATURE

P1217 ENGINE OVER TEMPERATURE

On Board Diagnosis Logic

INFOID:0000000005149350

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

EC-288

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

CO-10

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

Overall Function Check

INFOID:0000000005149351

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 and/or reservoir tank cap when the engine is hot. Serious burns could

be caused by high pressure fluid escaping from the radiator and/or reservoir tank.

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.

WITH CONSULT-III

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

EC-392,

"Diagnosis Procedure"

2. Confirm whether customer filled the coolant or not. If customer

filled the coolant, skip the following steps and go to

EC-392,

"Diagnosis Procedure"

3. Turn ignition switch ON.

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 proper-

ly (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 short-
ed.)

• Cooling fan
• Cooling fan (crankshaft driven)
• IPDM E/R (Cooling fan relay)
• Radiator hose
• Radiator
• Radiator cap
• Reservoir tank
• Reservoir tank cap
• Water pump
• Thermostat
For more information, refer to

EC-304,

"Main 13 Causes of Overheating"

SEF621W