Nissan Frontier. Instruction — part 448
P117A AIR FUEL RATIO
EC-363
< DTC/CIRCUIT DIAGNOSIS >
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2. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark
plug and the grounded portion.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace spark plug(s) with standard type one(s). For spark plug type, refer to
.
Spark should be generated.
EC-364
< DTC/CIRCUIT DIAGNOSIS >
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P1212 TCS COMMUNICATION LINE
P1212 TCS COMMUNICATION LINE
Description
INFOID:0000000009481043
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
INFOID:0000000009481044
DTC DETECTION LOGIC
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-349, "On Board Diagnosis 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 10.5 V 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
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009481045
Go to
(TYPE 2) or
(TYPE 3).
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1212
TCS communication line
ECM cannot 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-365
< DTC/CIRCUIT DIAGNOSIS >
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P1217 ENGINE OVER TEMPERATURE
On Board Diagnosis Logic
INFOID:0000000009481046
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, always replace the coolant. Refer to
, “Changing Engine Coolant”. Also, replace the engine oil.
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Always use
coolant with the proper mixture ratio. Refer to
MA-16, "FOR USA AND CANADA : Fluids and Lubri-
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function Check
INFOID:0000000009481047
Use this procedure to check the overall function of the engine coolant over temperature enrichment protection
check, a DTC might not be confirmed.
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.
WITH CONSULT
1. Check the coolant level in the reservoir tank and radiator.
NOTE:
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 NG, go to
WITH GST
1. Check the coolant level in the reservoir tank and radiator.
NOTE:
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.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1217
Engine over temperature
(Overheat)
• Cooling fan does not operate properly
(Overheat).
• Cooling fan system does not operate
properly (Overheat).
• Engine coolant was not added to the sys-
tem using the proper filling method.
• Engine coolant is not within the specified
range.
• Cooling fan (crankshaft driven)
• Radiator hose
• Radiator
• Radiator cap
• Water pump
• Thermostat
• Engine coolant temperature sensor
For more information, refer to
.
SEF621W
EC-366
< DTC/CIRCUIT DIAGNOSIS >
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P1217 ENGINE OVER TEMPERATURE
CAUTION:
Be careful not to overheat engine.
4. If NG, go to
Diagnosis Procedure
INFOID:0000000009481048
1.
CHECK COOLING FAN (CRANKSHAFT DRIVEN) OPERATION
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
2.
CHECK COOLING SYSTEM FOR LEAK
OK or NG
OK
>> GO TO 3.
NG
>> Check the following for leak.
• Hose
• Radiator
• Water pump
• Reservoir tank
3.
CHECK RADIATOR CAP
.
OK or NG
OK
>> GO TO 4.
NG
>> Replace radiator cap.
4.
CHECK THERMOSTAT
.
OK or NG
OK
>> GO TO 5.
NG
>> Replace thermostat. Refer to
CO-23, "Removal and Installation Thermostat"
.
5.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
EC-183, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> Replace engine coolant temperature sensor. Refer to
6.
CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to
EC-367, "Main 12 Causes of Overheating"
.
>> INSPECTION END
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