Nissan Altima L32. Instruction — part 566
P0850 PNP SWITCH
EC-1385
< COMPONENT DIAGNOSIS >
[VQ35DE]
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EC
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4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E3, F1
• Harness for open or short between PNP switch and ECM
>> Repair or replace harness or connectors.
9.
CHECK PNP SWITCH
.
Is the inspection result normal?
YES
>> GO TO 10
NO
>> Replace PNP switch.
10.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace malfunctioning part.
EC-1386
< COMPONENT DIAGNOSIS >
[VQ35DE]
P1148, P1168 CLOSED LOOP CONTROL
P1148, P1168 CLOSED LOOP CONTROL
DTC Logic
INFOID:0000000004362235
DTC DETECTION LOGIC
NOTE:
DTC P1148 or P1168 is displayed with another DTC for A/F sensor 1.
Perform the trouble diagnosis for the corresponding DTC.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1148
Closed loop control
function (bank 1)
The closed loop control function for bank 1 does
not operate even when vehicle is being driven
in the specified condition.
• Harness or connectors
(The sensor circuit is open or shorted.)
• A/F sensor 1
• A/F sensor 1 heater
P1168
Closed loop control
function (bank 2)
The closed loop control function for bank 2 does
not operate even when vehicle is being driven
in the specified condition.
P1212 TCS COMMUNICATION LINE
EC-1387
< COMPONENT DIAGNOSIS >
[VQ35DE]
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P1212 TCS COMMUNICATION LINE
Description
INFOID:0000000004362239
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:0000000004362240
DTC DETECTION LOGIC
NOTE:
• If DTC P1212 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
Refer to
• If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
Freeze frame data is not stored in the ECM for this self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
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
EC-1387, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000004362241
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 shorted.)
• ABS actuator and electric unit (control unit)
• Dead (Weak) battery
EC-1388
< COMPONENT DIAGNOSIS >
[VQ35DE]
P1217 ENGINE OVER TEMPERATURE
P1217 ENGINE OVER TEMPERATURE
DTC Logic
INFOID:0000000004362242
DTC DETECTION LOGIC
NOTE:
• If DTC P1217 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
Refer to
• If DTC P1217 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
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, always 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. Always use
coolant with the proper mixture ratio. Refer to
MA-12, "Fluids and Lubricants"
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-1388, "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-1389, "Diagnosis Procedure"
Component Function Check
INFOID:0000000004362243
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 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 shorted.)
• IPDM E/R (Cooling fan relays)
• Cooling fan motor
• Radiator hose
• Radiator
• Radiator cap
• Water pump
• Thermostat
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