Juke F15 (2012 year). Service Repair Manual — part 103
DIAGNOSIS AND REPAIR WORK FLOW
DLN-37
< BASIC INSPECTION >
[TRANSFER: TY21B]
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YES
>> GO TO 7.
NO
>> Check harness and connectors based on the information obtained by interview. Refer to
.
7.
FINAL CHECK
With CONSULT-III
1.
Check the reference value for 4WD control unit.
2.
Recheck the symptom and check that symptom is not reproduced on the same conditions.
Is the symptom reproduced?
YES
>> GO TO 3.
NO
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000006359972
Description
• In general, customers have their own criteria for a problem. Therefore, it is important to understand the
symptom and status well enough by asking the customer about his/her concerns carefully. To systemize all
the information for the diagnosis, prepare the interview sheet referring to the interview points.
• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
Interview sheet sample
Interview sheet
Customer
name
MR/MS
Registration
number
Initial year
registration
Vehicle type
VIN
Storage date
Engine
Mileage
km (Mile)
Symptom
Vehicle does not enter 4WD mode.
4WD warning lamp turns on.
Heavy tight-corner braking symptom occurs
Noise
Vibration
Decrease in turning performance.
Others
(
)
First occurrence
Recently
Others (
)
Frequency of occurrence
Always
Under a certain conditions of
Sometimes (time(s)/day)
Climate con-
ditions
Irrelevant
Weather
Fine
Cloud
Rain
Snow
Others (
)
Temperature
Hot
Warm
Cool
Cold
Temperature (Approx.
°
C)
Relative humidity
High
Moderate
Low
Road conditions
Urban area
Suburb area
High way
Mounting road (uphill or down hill)
Rough road
Operation conditions, etc.
Irrelevant
When engine starts
During idling
During driving
During acceleration
At constant speed driving
During deceleration
During cornering (right curve or left curve)
DLN-38
< BASIC INSPECTION >
[TRANSFER: TY21B]
DIAGNOSIS AND REPAIR WORK FLOW
Other conditions
Memo
Interview sheet
Customer
name
MR/MS
Registration
number
Initial year
registration
Vehicle type
VIN
Storage date
Engine
Mileage
km (Mile)
WRITING UNIT PARAMETER
DLN-39
< BASIC INSPECTION >
[TRANSFER: TY21B]
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WRITING UNIT PARAMETER
Description
INFOID:0000000006581329
Perform writing unit parameter of electric controlled coupling after replacing 4WD control module, rear final
drive assembly or electric controlled coupling. Refer to
Work Procedure
INFOID:0000000006581330
1.
WRITE UNIT PARAMETER
With CONSULT-III
1.
Confirm the unit parameter (A) of electric controlled coupling
(LH) and (B) of electric controlled coupling (RH).
NOTE:
• This illustration is sample.
• For the illustration, the unit parameters are following.
2.
Turn the ignition switch OFF to ON.
3.
Select “UNIT CHARACTERISTICS WRITE” of CONSULT-III
“WORK SUPPORT” for “ALL MODE AWD/4WD”.
4.
Input unit parameters.
5.
Select “Start”.
6.
Check that “UNIT CHARACTERISTICS WRITE COMPLETED” is displayed.
>> WORK END
Right side:
3B4D66BBE318
Left side:
3B4D66BBE32B
JSDIA2079ZZ
DLN-40
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P1804, P1809 4WD CONTROL MODULE
DTC/CIRCUIT DIAGNOSIS
P1804, P1809 4WD CONTROL MODULE
DTC Logic
INFOID:0000000006359976
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Are DTC
′
s “P1804 or P1809” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006359977
1.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
1.
Erase self-diagnostic results for “ALL MODE AWD/4WD”.
2.
Turn the ignition switch OFF, and then wait 10 seconds and more.
3.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Are DTC
′
s “P1804 or 1809” detected?
YES
>> Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
.
NO
>> Check 4WD control module 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
(EEOROM) system of 4WD control mod-
ule.
Internal malfunction of 4WD control
module.
P1809
CONTROL UNIT 4
AD converter system of 4WD control
module is malfunctioning.
P1808 WHEEL SPEED SENSOR
DLN-41
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
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P1808 WHEEL SPEED SENSOR
DTC Logic
INFOID:0000000006359979
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Start the engine and drive at 30 km/h (19 MPH) or more for approximately 1minute.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1808” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006359980
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ABS”.
Is any DTCs detected?
YES
NO
>> GO TO 2.
2.
ERASE SELF-DIAGNOSTIC RESULT
With CONSULT-III
1.
Erase self-diagnostic results for “ALL MODE AWD/4WD”.
2.
Start the engine and drive vehicle at 30 km/h (19 MPH) or more.
3.
Check that ABS warning lamp turns OFF.
Does ABS warning lamp turn OFF?
YES
>> GO TO 3.
NO
>> Refer to
BRC-212, "Diagnosis Procedure"
3.
CHECK TERMINALS AND HARNESS CONNECTORS
Check 4WD control module 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. When DTC
“P1808” is detected, Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P1808
VHCL SPEED SEN-ABS
• Malfunction is detected in vehicle
speed signal that is output from ABS
actuator and electric unit (control unit)
through CAN communication.
• Improper signal is input while driving.
• ABS actuator and electric unit (control
unit)
- Malfunction of ABS actuator and elec-
tric unit (control unit) circuit error
- Wheel speed sensor error
• 4WD control module
• CAN communication line
DLN-42
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P1811 POWER SUPPLY CIRCUIT FOR 4WD CONTROL MODULE
P1811 POWER SUPPLY CIRCUIT FOR 4WD CONTROL MODULE
DTC Logic
INFOID:0000000006359982
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1811” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006359983
1.
CHECK 4WD CONTROL MODULE POWER SUPPLY (1)
1.
Turn the ignition switch OFF.
2.
Disconnect 4WD control module harness connector.
3.
Check the voltage between 4WD control module harness connector and ground.
4.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
5.
Check the voltage between 4WD control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK 4WD CONTROL MODULE POWER SUPPLY (2)
1.
Turn the ignition switch OFF.
2.
Check the 10A fuse (#33).
3.
Check the harness for open or short between 4WD control module harness connector No.1 terminal and
10A (#33).
Is the inspection result normal?
DTC
Display item
Malfunction detected condition
Possible cause
P1811
BATTERY VOLTAGE
When 4WD control module power sup-
ply is lower or higher than normal
• Malfunction of 4WD control module
power supply circuit (open or short)
• Malfunction of 4WD control module
4WD control module
—
Voltage
Connector
Terminal
B47
1
Ground
Battery voltage
4WD control module
—
Voltage
Connector
Terminal
B47
1
Ground
Battery voltage
P1811 POWER SUPPLY CIRCUIT FOR 4WD CONTROL MODULE
DLN-43
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
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YES
>> Perform the trouble diagnosis for power supply circuit. Refer to
NO
>> Repair or replace error-detected parts.
3.
CHECK 4WD CONTROL MODULE POWER SUPPLY (3)
1.
Turn the ignition switch OFF.
2.
Check the voltage between 4WD control module harness connector and ground.
3.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
4.
Check the voltage between 4WD control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK 4WD CONTROL MODULE POWER SUPPLY (4)
1.
Turn the ignition switch OFF.
2.
Check the 10A fuse (#3).
3.
Check the harness for open or short between 4WD control module harness connector No.3 terminal and
10A (#3).
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for ignition power supply circuit. Refer to
NO
>> Repair or replace error-detected parts.
5.
CHECK 4WD CONTROL MODULE GROUND
1.
Turn the ignition switch OFF.
2.
Check the continuity between 4WD control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace error-detected parts.
6.
CHECK TERMINALS AND HARNESS CONNECTORS
Check the 4WD control module pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
4WD control module
—
Voltage
Connector
Terminal
B47
3
Ground
0 V
4WD control module
—
Voltage
Connector
Terminal
B47
3
Ground
Battery voltage
4WD control module
—
Continuity
Connector
Terminal
B47
10
Ground
Existed
11
DLN-44
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P1813 4WD MODE SWITCH
P1813 4WD MODE SWITCH
DTC Logic
INFOID:0000000006359989
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Turn the 4WD mode switch 2WD
⇒
4WD-V
⇒
4WD
⇒
4WD-V
⇒
4WD.
3.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1813” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006359990
1.
CHECK 4WD MODE SWITCH
Check 4WD mode switch. Refer to
DLN-45, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace 4WD mode switch. Refer to
DLN-92, "Removal and Installation"
.
2.
CHECK 4WD MODE SWITCH CIRCUIT (1)
1.
Disconnect 4WD control module harness connector.
2.
Check the continuity between 4WD control module harness connector and 4WD mode switch harness
connector.
DTC
Display item
Malfunction detected condition
Possible cause
P1813
4WD MODE SW
Multiple signals received from 4WD shift
switch are detected.
• 4WD mode switch
- Internal malfunction of 4WD mode
switch
- Malfunction of 4WD mode switch cir-
cuit
• 4WD control module
P1813 4WD MODE SWITCH
DLN-45
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
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Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK 4WD MODE SWITCH CIRCUIT (2)
Check the continuity between 4WD mode switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK TERMINALS AND HARNESS CONNECTORS
• Check 4WD control module pin terminals for damage or loose connection with harness connector.
• Check 4WD mode switch pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>> Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
Component Inspection
INFOID:0000000006359991
1.
CHECK 4WD MODE SWITCH
1.
Turn the ignition switch OFF.
2.
Remove 4WD mode switch. Refer to
DLN-92, "Removal and Installation"
3.
Check the continuity between 4WD mode switch harness connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
4WD control module
4WD mode switch
Continuity
Connector
Terminal
Connector
Terminal
B47
9
M48
1
Existed
5
Not existed
6
Not existed
13
1
Not existed
5
Existed
6
Not existed
21
1
Not existed
5
Not existed
6
Existed
4WD mode switch
—
Continuity
Connector
Terminal
M48
3
Ground
Not existed
4WD switch assembly
Condition
Continuity
Terminal
1
3
4WD shift switch: 2WD
Not existed
4WD shift switch: 4WD-V or 4WD
Existed
5
3
4WD shift switch: 2WD
Existed
4WD shift switch: 4WD-V or 4WD
Not existed
6
3
4WD shift switch: 2WD or 4WD-V
Not existed
4WD shift switch: 4WD
Existed
DLN-46
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P1813 4WD MODE SWITCH
NO
>> Replace 4WD mode switch. Refer to
DLN-92, "Removal and Installation"
.
P181B INCOMPLETE SELFSHUT
DLN-47
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
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P181B INCOMPLETE SELFSHUT
DTC Logic
INFOID:0000000006360005
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181B” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006360006
1.
CHECK 4WD CONTROL MODULE POWER SUPPLY (1)
1.
Turn the ignition switch OFF.
2.
Disconnect 4WD control module harness connector.
3.
Check the voltage between 4WD control module harness connector and ground.
4.
Turn the ignition switch ON.
CAUTION:
Never start the engine.
5.
Check the voltage between 4WD control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK 4WD CONTROL MODULE POWER SUPPLY (2)
1.
Turn the ignition switch OFF.
2.
Check the 10A fuse (#33).
3.
Check the harness for open or short between 4WD control module harness connector No.1 terminal and
10A (#33).
Is the inspection result normal?
DTC
Display item
Malfunction detected condition
Possible cause
P181B
IMCOMP SELFSHUT
When ignition switch is OFF and 4WD
control module power supply is lower or
higher than normal
Self-shut of 4WD control module is in-
complete.
4WD control module
—
Voltage
Connector
Terminal
B47
1
Ground
Battery voltage
4WD control module
—
Voltage
Connector
Terminal
B47
1
Ground
Battery voltage
DLN-48
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P181B INCOMPLETE SELFSHUT
YES
>> Perform the trouble diagnosis for power supply circuit. Refer to
NO
>> Repair or replace error-detected parts.
3.
CHECK 4WD CONTROL MODULE GROUND
1.
Turn the ignition switch OFF.
2.
Check the continuity between 4WD control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK TERMINALS AND HARNESS CONNECTORS
Check 4WD control module 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. When DTC
“P181B” is detected, Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
4WD control module
—
Continuity
Connector
Terminal
E60
10
Ground
Existed
11
P181D ENGINE TORQUE SIGNAL
DLN-49
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
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P181D ENGINE TORQUE SIGNAL
DTC Logic
INFOID:0000000006360018
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Start the engine and drive at 20 km/h (12 MPH) or more.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181D” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006360019
1.
PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ENGINE”.
Is any DTCs detected?
YES
NO
>> GO TO 2.
2.
ERASE SELF-DIAGNOSTIC RESULT
With CONSULT-III
1.
Erase self-diagnostic results for “ALL MODE AWD/4WD”.
2.
Turn the ignition switch OFF.
3.
Start the engine and drive vehicle for a while.
4.
Check that malfunction indicator lamp (MIL) turns OFF.
Does malfunction indicator lamp (MIL) turn OFF?
YES
>> GO TO 3.
NO
>> Refer to
.
3.
CHECK TERMINALS AND HARNESS CONNECTORS
Check 4WD control module 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. When DTC
“P181D” is detected, Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P181D
ENGINE SYSTEM
Malfunction is detected in engine torque
signal that is output from ECM through
CAN communication.
• ECM
• 4WD control module
• CAN communication line
DLN-50
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P181E STEERING ANGLE SENSOR
P181E STEERING ANGLE SENSOR
DTC Logic
INFOID:0000000006360002
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181E” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006360003
1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ABS”.
Is DTC “C1143” detected?
YES
>> Proceed to diagnosis procedure. Refer to
BRC-189, "Diagnosis Procedure"
.
NO
>> GO TO 2.
2.
CHECK CAN COMMUNICATION LINE
Check communication line. Refer to
.
Is inspection result normal?
YES
>> Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P181E
ST ANGLE SEN SIG
Malfunction is detected in steering angle
sensor signal through CAN communica-
tion.
• Steering angle sensor
- Steering angle sensor error
- Malfunction of steering angle sensor
circuit
• Malfunction of 4WD control module
• CAN communication line
P181F INCOMPLETE CALIBRATION
DLN-51
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
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P181F INCOMPLETE CALIBRATION
DTC Logic
INFOID:0000000006360025
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181F” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006360026
1.
PERFORM WRITING UNIT PARAMETER
1.
Erase self-diagnostic result for “ALL MODE AWD/4WD”.
2.
Perform writing unit parameter. Refer to
.
3.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC except “P181F” detected?
YES
>> Check DTC.
NO
>> GO TO 2.
2.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
1.
Erase self-diagnostic result for “ALL MODE AWD/4WD”.
2.
Turn the ignition switch OFF, and then wait 10 seconds or more.
3.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P181F” detected?
YES
>> Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
.
NO
>> Check 4WD control module pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace the error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P181F
INCOMP CALIBRATION
When incomplete writing unit parameter
of rear final drive is detected.
Writing unit parameter is incomplete.
DLN-52
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: TY21B]
P1820 ENGINE SPEED SIGNAL
P1820 ENGINE SPEED SIGNAL
DTC Logic
INFOID:0000000006360023
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.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1.
Start the engine and drive at 20 km/h (12 MPH) or more.
2.
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “P1820” detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006360024
1.
PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ENGINE”.
Is any DTCs detected?
YES
>> Check the DTCs. Refer to
.
NO
>> GO TO 2.
2.
ERASE SELF-DIAGNOSTIC RESULT
With CONSULT-III
1.
Erase self-diagnostic results for “ALL MODE AWD/4WD”.
2.
Turn the ignition switch OFF.
3.
Start the engine and drive vehicle for a while.
4.
Check that malfunction indicator lamp (MIL) turns OFF.
Does malfunction indicator lamp (MIL) turn OFF?
YES
>> GO TO 3.
NO
>> Refer to
.
3.
CHECK TERMINALS AND HARNESS CONNECTORS
Check 4WD control module 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. When DTC
“P1820” is detected, Replace 4WD control module. Refer to
DLN-91, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
DTC
Display item
Malfunction detected condition
Possible cause
P1820
ENGINE SPEED SIG
Malfunction is detected in engine speed
signal that is output from ECM through
CAN communication.
• ECM
• 4WD control module
• CAN communication line
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