Nissan Titan. Instruction — part 269
P1212 TCS COMMUNICATION LINE
EC-377
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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P1212 TCS COMMUNICATION LINE
Description
INFOID:0000000009886807
NOTE:
• If DTC P1212 is displayed with DTC U0101 or U1001, first perform the trouble diagnosis for DTC
U0101, U1001. Refer to
• If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
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:0000000009886808
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:0000000009886809
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V 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
Diagnosis Procedure
INFOID:0000000009886810
Go to
BRC-24, "CONSULT 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-378
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P1217 ENGINE OVER TEMPERATURE
P1217 ENGINE OVER TEMPERATURE
On Board Diagnosis Logic
INFOID:0000000009886811
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
.
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function Check
INFOID:0000000009886812
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
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. Start engine.
4. Make sure that cooling fan (crankshaft driven) operates.
5. If are NG, go to
WITH GST
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.
• Cooling fan (crankshaft driven)
• Radiator hose
• Radiator
• Radiator cap
• Reservoir tank
• Reservoir tank cap
• Water pump
• Thermostat
For more information, refer to
"Main 13 Causes of Overheating"
SEF621W
P1217 ENGINE OVER TEMPERATURE
EC-379
< DTC/CIRCUIT DIAGNOSIS >
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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. Start engine and make sure that cooling fan (crankshaft driven)
operates.
CAUTION:
Be careful not to overheat engine.
4. If NG, go to
Diagnosis Procedure
INFOID:0000000009886813
1.
INSPECTION START
1. Start engine and let it idle.
2. Make sure that cooling fan (crankshaft driven) operates normally.
OK or NG
OK
>> GO TO 2.
NG
>> Check cooling fan (crankshaft driven). Refer to
CO-18, "Removal and Installation (Crankshaft
2.
CHECK COOLING SYSTEM FOR LEAK
.
OK or NG
OK
>> GO TO 3.
NG
>> Check the following for leak.
• Hose
• Radiator
• Radiator cap
• Water pump
• Reservoir tank
3.
CHECK COMPONENT PARTS
Check the following.
• RESERVOIR TANK CAP (Refer to
.)
• Thermostat. (Refer to
CO-22, "Removal and Installation"
.)
• Water control valve. (Refer to
CO-22, "Removal and Installation"
• Engine coolant temperature sensor. (Refer to
EC-191, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> Replace malfunctioning component.
4.
CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to
EC-380, "Main 13 Causes of Overheating"
.
SEF621W
SEF882V
EC-380
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P1217 ENGINE OVER TEMPERATURE
>> INSPECTION END
Main 13 Causes of Overheating
INFOID:0000000009886814
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to
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
50 - 50% coolant mixture
3
• Coolant level
• Visual
Coolant up to MAX level in
reservoir tank and radiator
filler neck
CO-11, "Changing Engine
Coolant"
4
• Reservoir tank cap
• Pressure tester
95 - 125 kPa
(0.97 - 1.28 kg/cm
2
, 14 -
18 psi) (Limit)
ON*
2
5
• Coolant leaks
• Visual
No leaks
ON*
2
6
• Thermostat
• Touch the upper and
lower radiator hoses
Both hoses should be hot
CO-22, "Removal and In-
stallation"
ON*
1
7
• Cooling fan
• Visual
Operating
See
.
OFF
8
• Combustion gas leak
• Color checker chemical
tester 4 Gas analyzer
Negative
—
ON*
3
9
• Coolant temperature
gauge
• Visual
Gauge less than 3/4 when
driving
—
• Coolant overflow to res-
ervoir tank
• Visual
No overflow during driving
and idling
CO-11, "Changing Engine
Coolant"
OFF*
4
10
• Coolant return from res-
ervoir tank to radiator
• Visual
Should be initial level in
reservoir tank
CO-11, "Changing Engine
Coolant"
OFF
11
• Water control valve
• Remove and inspect
the valve
Within the specified value
CO-22, "Removal and In-
stallation"
OFF
12
• Cylinder head
• Straight gauge feeler
gauge
0.1 mm (0.004 in) Maxi-
mum distortion (warping)
EM-82, "Inspection After
Disassembly"
13
• Cylinder block and pis-
tons
• Visual
No scuffing on cylinder
walls or piston
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