Infiniti FX35, FX50 (S51). Manual — part 546
C1210 ECM
DLN-19
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ETX13C]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
C1210 ECM
Description
INFOID:0000000005249051
Transmits the following signals via CAN communication to AWD control unit.
• Accelerator pedal position signal
• Engine speed signal
DTC Logic
INFOID:0000000005249052
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Start the engine. Drive the vehicle for a while.
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:0000000005249053
1.
PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ENGINE”.
Is any DTC detected?
YES
>> Check the DTC.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
1.
Erase self-diagnostic results for “ALL MODE AWD/4WD”.
2.
Turn the ignition switch OFF.
3.
Start the engine. Drive the vehicle for a while.
4.
Make sure that malfunction indicator lamp (MIL) turns OFF.
5.
Stop the vehicle. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “C1210” detected?
YES
>> Replace AWD control unit. Refer to
.
NO
>> Check AWD 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
C1210
ENGINE SIGNAL 1
Malfunction related to engine signal has
been detected.
Malfunction of engine control system
DLN-20
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ETX13C]
P1804 TRANSFER CONTROL UNIT
P1804 TRANSFER CONTROL UNIT
Description
INFOID:0000000005249054
• Controls driving force distribution by signals from each sensor from rear wheel driving mode (0:100) to 4-
wheel driving mode (50:50).
• Rear wheel driving conditions is available by fail-safe function if malfunction is detected in AWD system.
DTC Logic
INFOID:0000000005249055
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1804” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END.
Diagnosis Procedure
INFOID:0000000005249056
1.
REPLACE AWD CONTROL UNIT
CAUTION:
Replace AWD control unit when self-diagnostic results show items other than this DTC simulta-
neously, too.
>> Replace AWD control unit. Refer
DTC
Display item
Malfunction detected condition
Possible cause
P1804
CONTROL UNIT 3
Malfunction has occurred inside AWD
control unit.
Malfunction is detected in the memory
(EEPROM) system of transfer control
unit.
P1809 TRANSFER CONTROL UNIT
DLN-21
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ETX13C]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1809 TRANSFER CONTROL UNIT
Description
INFOID:0000000005249057
• Controls driving force distribution by signals from each sensor from rear wheel driving mode (0:100) to 4-
wheel driving mode (50:50).
• Rear wheel driving conditions is available by fail-safe function if malfunction is detected in AWD system.
DTC Logic
INFOID:0000000005249058
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1809” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END.
Diagnosis Procedure
INFOID:0000000005249059
1.
REPLACE AWD CONTROL UNIT
CAUTION:
Replace AWD control unit when self-diagnostic results show items other than this DTC simulta-
neously, too.
>> Replace AWD control unit. Refer
.
DTC
Display item
Malfunction detected condition
Possible cause
P1809
CONTROL UNIT 4
Malfunction has occurred inside AWD
control unit.
AD converter system of transfer control
unit is malfunctioning.
DLN-22
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ETX13C]
P1826 TRANSFER FLUID TEMPERATURE
P1826 TRANSFER FLUID TEMPERATURE
Description
INFOID:0000000005249060
• Transfer fluid temperature sensor detects the transfer fluid temper-
ature and transmits a signal to AWD control unit.
• The electrical resistance of the sensor decreases as temperature
increases.
DTC Logic
INFOID:0000000005249061
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1826” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END.
Diagnosis Procedure
INFOID:0000000005249062
1.
CHECK TRANSFER FLUID TEMPERATURE SENSOR SIGNAL (1)
1.
Turn the ignition switch OFF.
2.
Disconnect AWD solenoid harness connector.
3.
Turn the ignition switch ON.
4.
Check the voltage between AWD solenoid harness connector terminals.
JSDIA0804GB
JSDIA0805GB
DTC
Display item
Malfunction detected condition
Possible cause
P1826
OIL TEMP SEN
Transfer fluid temperature sensor volt-
age condition is continued 0 V or more
than 2.45 V for several seconds.
• Malfunction of transfer fluid tempera-
ture sensor or transfer fluid tempera-
ture sensor circuit.
• Malfunction of AWD control unit.
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