Nissan Frontier D40. Manual — part 258
P1819 TRANSFER CONTROL DEVICE
DLN-53
< COMPONENT DIAGNOSIS >
[TRANSFER: TX15B]
C
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G
H
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K
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A
B
DLN
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4.
Turn ignition switch “ON”. (Do not start engine.)
5.
Check voltage between transfer control unit harness connector
terminal and ground.
Are the inspection results normal?
YES
>> GO TO 4.
NO
>>
Check the following. If any items are damaged, repair
or replace damaged parts.
• Harness for short or open between battery and trans-
fer shut off relay 2 harness connector E157 terminal 1.
• Harness for short or open between transfer shut off relay 2 harness connector E157 terminal 2
and transfer control unit harness connector M153 terminal 40.
• Transfer shut off relay 2.
4.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 5 (With CONSULT-III) or GO TO 6 (Without CONSULT-III).
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
5.
PERFORM SELF-DIAGNOSIS (WITH CONSULT-III)
With CONSULT-III
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-III.
3.
Touch “ERASE”.
4.
Turn ignition switch “OFF” and wait at least 10 seconds.
5.
Perform the self-diagnosis again.
Is the “SHIFT ACT CIR [P1819]” displayed?
YES
>> Replace transfer control unit. Refer to
DLN-94, "Removal and Installation"
.
NO
>> Inspection End.
6.
PERFORM SELF-DIAGNOSIS (WITHOUT CONSULT-III)
Without CONSULT-III
1.
Perform the self-diagnosis and then erase self-diagnostic results. Refer to
2.
Perform the self-diagnosis again.
Do the self-diagnostic results indicate transfer control device?
YES
>> Replace transfer control unit. Refer to
DLN-94, "Removal and Installation"
.
NO
>> Inspection End.
Connector
Terminal
Voltage (Approx.)
M153
40 - Ground
0V
SDIA2820E
DLN-54
< COMPONENT DIAGNOSIS >
[TRANSFER: TX15B]
P1820 ENGINE SPEED SIGNAL
P1820 ENGINE SPEED SIGNAL
Description
INFOID:0000000005275455
The ECM transmits the engine speed signal via CAN communication to the transfer control unit. DTC P1820
will set when either of the following occur:
• Malfunction is detected in engine speed signal that is output from the ECM.
• Improper signal is input while driving.
DTC Logic
INFOID:0000000005275456
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Perform self-diagnosis.
Is DTC P1820 detected?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005275457
1.
CHECK DTC WITH ECM
Perform self-diagnosis with ECM. Refer to
EC-69, "CONSULT-III Function (ENGINE)"
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 3.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Is DTC P1820 displayed?
YES
>> Perform self-diagnosis with ECM again.
NO
>> Inspection End.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1820]
ENGINE SPEED SIG
• Malfunction is detected in engine
speed signal that is output from ECM
through CAN communication.
• Improper signal is input while driving.
TRANSFER CONTROL UNIT
DLN-55
< ECU DIAGNOSIS >
[TRANSFER: TX15B]
C
E
F
G
H
I
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K
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M
A
B
DLN
N
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P
ECU DIAGNOSIS
TRANSFER CONTROL UNIT
Reference Value
INFOID:0000000005275458
VALUE ON THE DIAGNOSIS TOOL
CONSULT-III data monitor item
Monitored item [Unit]
Content
Condition
Display value
VHCL/S SEN·FR [km/h]
or [mph]
Wheel speed (Front wheel)
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condi-
tion.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±
10%)
VHCL/S SEN·RR [km/h]
or [mph]
Wheel speed (Rear wheel)
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condi-
tion.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±
10%)
ENGINE SPEED [rpm]
Engine speed
Engine stopped
(Engine speed: Less than 400 rpm)
0 rpm
Engine running
(Engine speed: 400 rpm or more)
Approximately
equal to the indica-
tion on tachometer
BATTERY VOLT [V]
Power supply voltage for
transfer control unit
Ignition switch: ON
Battery voltage
2WD SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: 2WD
On
4WD shift switch: 4H and 4LO
Off
4H SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: 4H
On
4WD shift switch: 2WD and 4LO
Off
4L SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: 4LO
On
4WD shift switch: 2WD and 4H
Off
4L POSI SW [On/Off]
Condition of 4LO switch
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch: 4LO
On
Except the above
Off
ATP SWITCH [On/Off]
Condition of ATP switch
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch
: 4H to 4LO or 4LO to 4H
(While actuator motor is
operating.)
On
Except the above
Off
WAIT DETCT SW [On/
Off]
Condition of wait detection
switch
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch
: 4H and 4LO
On
4WD shift switch: 2WD
Off
4WD MODE [2H/4H/4L]
Control status of 4WD
(Output condition of 4WD
shift indicator lamp and
4LO indicator lamp)
4WD shift switch
(Engine running)
2WD
2H
4H
4H
4LO
4L
DLN-56
< ECU DIAGNOSIS >
[TRANSFER: TX15B]
TRANSFER CONTROL UNIT
PHYSICAL VALUES
VHCL/S COMP [km/h] or
[mph]
Vehicle speed
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condi-
tion.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±
10%)
SHIFT ACT 1 [On/Off]
Output condition to actua-
tor motor (clockwise)
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch
: 2WD to 4H or 4H to 4LO
or 2WD to 4LO
On
Except the above
Off
SHIFT AC MON1 [On/
Off]
Check signal for transfer
control unit signal output
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch
: 2WD to 4H or 4H to 4LO
or 2WD to 4LO
On
Except the above
Off
SHIFT ACT 2 [On/Off]
Output condition to actua-
tor motor (counterclock-
wise)
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch
: 4LO to 4H or 4H to 2WD
or 4LO to 2WD
On
Except the above
Off
SHIFT AC MON2 [On/
Off]
Check signal for transfer
control unit signal output
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch
: 4LO to 4H or 4H to 2WD
or 4LO to 2WD
On
Except the above
Off
SHIFT ACT/R MON [On/
Off]
Operating condition of ac-
tuator motor relay (integrat-
ed in transfer control unit)
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
When 4WD shift switch is
operated
On
When 4WD shift switch is
not operated
Off
SHIFT POS SW1 [On/
Off]
Condition of actuator posi-
tion switch 1
• Vehicle stopped
• Engine running
• A/T selector lever “N”
position
• Brake pedal depressed
4WD shift switch: 2WD
and 4LO
On
4WD shift switch: 4H
Off
SHIFT POS SW2 [On/
Off]
Condition of actuator posi-
tion switch 2
4WD shift switch: 4LO
On
4WD shift switch: 2WD
and 4H
Off
SHIFT POS SW3 [On/
Off]
Condition of actuator posi-
tion switch 3
4WD shift switch: 2WD
and 4H
On
4WD shift switch: 4LO
Off
SHIFT POS SW4 [On/
Off]
Condition of actuator posi-
tion switch 4
4WD shift switch: 4H and
4LO
On
4WD shift switch: 2WD
Off
4WD FAIL LAMP [On/
Off]
4WD warning lamp condi-
tion
4WD warning lamp: On
On
4WD warning lamp: Off
Off
2WD IND [On/Off]
Rear indicator of 4WD shift
indicator lamp condition
Rear indicator of 4WD shift indicator lamp: On
On
Rear indicator of 4WD shift indicator lamp: Off
Off
4H IND [On/Off]
Front and center indicator
of 4WD shift indicator lamp
condition
Front and center indicator of 4WD shift indicator lamp
: ON
On
Front and center indicator of 4WD shift indicator lamp
: OFF
Off
4L IND [On/Off]
4LO indicator lamp condi-
tion
4LO indicator lamp: On
On
4LO indicator lamp: Off
Off
Monitored item [Unit]
Content
Condition
Display value
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