Nissan Pathfinder. Manual — part 403
DLN-54
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21C]
C1209 MODE SW
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace 4WD shift switch. Refer to
DLN-73, "Removal and Installation"
2
6
4WD shift switch: AUTO
Existed
Except the above
Not existed
2
8
4WD shift switch: 4WD
Existed
Except the above
Not existed
4WD shift switch
Continuity
Terminal
Condition
C1210 ECM
DLN-55
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21C]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
C1210 ECM
DTC Logic
INFOID:0000000009177743
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION
With CONSULT
1. Start the engine and drive at 30 km/h (19 MPH) or more for approximately 1 minute.
2. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “C1210” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009177744
1.
PERFORM ECM SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis for “ENGINE”.
Is any DTC detected?
YES
>> Check the DTC. Refer to
.
NO
>> GO TO 2.
2.
CHECK TERMINALS AND HARNESS CONNECTORS
Check 4WD control unit pin terminals for damage or loose connection with harness connector.
Is inspection result normal?
YES
>> After turning the ignition switch OFF, perform DTC confirmation procedure again. If DTC “C1210”
is detected, Replace 4WD control unit. Refer to
DLN-72, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
C1210
ENGINE SIGNAL 1
Malfunction related to engine signal has
been detected.
Malfunction of engine control system
DLN-56
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21C]
P1804 4WD CONTROL UNIT
P1804 4WD CONTROL UNIT
DTC Logic
INFOID:0000000009177745
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1804” detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009177746
1.
PERFORM SELF-DIAGNOSIS AGAIN
With CONSULT
Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to
Is DTC “P1804” detected?
YES
>> Replace 4WD control unit. Refer to
DLN-72, "Removal and Installation"
NO
>> Check 4WD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P1804
CONTROL UNIT 3
Malfunction is detected in the memory
(EEPROM) system of 4WD control unit.
Internal malfunction of 4WD control
module.
P181F INCOMPLETE CALIBRATION
DLN-57
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21C]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P181F INCOMPLETE CALIBRATION
DTC Logic
INFOID:0000000009177747
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181F” detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009177748
1.
PERFORM WRITING UNIT CHARACTERISTICS
1. Erase self-diagnostic result for “ALL MODE AWD/4WD”.
2. Perform writing unit characteristics. Refer to
3. Turn the ignition switch OFF to ON.
4. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC except “P181F” detected?
YES
>> Perform trouble diagnosis for detected DTC. Refer to
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS AGAIN
With CONSULT
Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to
Is DTC “P181F” detected?
YES
>> Replace 4WD control unit. Refer to
DLN-72, "Removal and Installation"
NO
>> Check 4WD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P181F
INCOMP CALIBRATION
When incomplete writing unit character-
istics of rear final drive is detected.
Writing unit characteristics is incom-
plete.
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