C1201 AWD CONTROL UNIT
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
C1201 | CONTROLLER FAILURE (Control unit failure) | Malfunction has occurred inside AWD control unit. |
POSSIBLE CAUSE
Internal malfunction of AWD control unit
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “C1201” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-36, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Is DTC “C1201” detected? YES >> Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
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.
C1203 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
C1203 | ABS SYSTEM (ABS system) | Malfunction related to wheel sensor has been detected by ABS actuator and electric unit (control unit). |
POSSIBLE CAUSE
ABS malfunction
FAIL-SAFE
AWD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “C1203” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-37, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis for “ABS”.
Is any DTC detected? YES >> Check the DTC. Refer to BRC-55, "DTC Index".
NO >> GO TO 2.
2.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD 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 “C1203” is detected, Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
C1204 AWD SOLENOID
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
C1204 | 4WD SOLENOID (4WD solenoid) | Malfunction related to AWD solenoid has been detected. |
POSSIBLE CAUSE
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “C1204” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-38, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.CHECK AWD SOLENOID POWER SUPPLY (1)
CAUTION: Never start the engine.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK AWD SOLENOID POWER SUPPLY (2)
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace error-detected parts.
3.CHECK AWD SOLENOID GROUND
Check the continuity between AWD control unit harness connector and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK AWD SOLENOID CIRCUIT (1)
Check the resistance between AWD control unit harness connector.
Is the inspection result normal? YES >> GO TO 7.
NO >> GO TO 5.
5.CHECK AWD SOLENOID CIRCUIT (2)
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK AWD SOLENOID
Check AWD solenoid. Refer to DLN-40, "Component Inspection".
Is the inspection result normal? YES >> GO TO 7.
NO >> AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to DLN-114, "Removal and Installation".
7.CHECK TERMINALS AND HARNESS CONNECTORS
Is the inspection result normal? YES >> Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
Component Inspection
1.CHECK AWD SOLENOID
Is the inspection result normal? YES >> INSPECTION END
NO >> AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to DLN-114, "Removal and Installation".
C1209 MODE SW
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
C1209 | MODE SW (Mode switch) | More than two switch inputs are simultaneously detected due to short circuit of AWD lock switch. |
POSSIBLE CAUSE
Malfunction of AWD lock switch or AWD lock switch circuit.
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “C1209” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-41, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.CHECK AWD LOCK SWITCH
Check AWD lock switch. Refer to DLN-42, "Component Inspection".
Is the inspection result normal? YES >> GO TO 2.
NO >> Replace AWD lock switch. Refer to DLN-68, "Removal and Installation".
2.CHECK AWD LOCK SWITCH CIRCUIT (1)
Check the continuity between AWD lock switch harness connector and ground.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK AWD LOCK SWITCH CIRCUIT (2)
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK AWD CONTROL UNIT OUTPUT SIGNAL
CAUTION: Never start the engine.
Is the inspection result normal? YES >> Check each harness connector pin terminal for disconnection.
NO >> Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
Component Inspection
1.CHECK AWD LOCK SWITCH
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace AWD lock switch. Refer to DLN-68, "Removal and Installation".
C1210 ECM
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
C1210 | ENGINE SIGNAL 1 (Engine signal 1) | Malfunction related to engine signal has been detected. |
POSSIBLE CAUSE
Malfunction of engine control system
FAIL-SAFE
AWD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “C1210” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-43, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.PERFORM ECM SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis for “ENGINE”.
Is any DTC detected? YES >> Check the DTC. Refer to EC-93, "DTC Index".
NO >> GO TO 2.
2.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD 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 AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
P1804 AWD CONTROL UNIT
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P1804 | CONTROL UNIT (Control unit) | Malfunction is detected in the memory (EEPROM) system of AWD control unit. |
POSSIBLE CAUSE
Internal malfunction of AWD control unit.
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “P1804” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-44, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.REPLACE AWD CONTROL UNIT
CAUTION: Replace AWD control unit when DTC “P1804” is detected simultaneously with other items.
>> Replace AWD control unit. Refer DLN-67, "Removal and Installation".
P1808 WHEEL SPEED SENSOR
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P1808 | VHCL SPEED SEN-ABS (Vehicle speed sensor-ABS) |
|
POSSIBLE CAUSE
FAIL-SAFE
AWD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “P1808” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-45, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis for “ABS”.
Is any DTC detected? YES >> Check the DTC. Refer to BRC-55, "DTC Index".
NO >> GO TO 2.
2.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD 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 “P1808” is detected, Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
P1809 AWD CONTROL UNIT
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P1809 | CONTROL UNIT (Control unit) | AD converter system of AWD control unit is malfunctioning. |
POSSIBLE CAUSE
Internal malfunction of AWD control unit
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “P1809” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-46, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.REPLACE AWD CONTROL UNIT
CAUTION: Replace AWD control unit when DTC “P1809” is detected simultaneously with other items.
>> Replace AWD control unit. Refer DLN-67, "Removal and Installation".
P1811 BATTERY VOLTAGE
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P1811 | BATTERY VOLTAGE (Battery voltage) | When engine is running and AWD control unit power supply is less than 9 V or higher than 16 V. |
POSSIBLE CAUSE
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “P1811” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-47, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.CHECK AWD CONTROL UNIT POWER SUPPLY (1)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK AWD CONTROL UNIT POWER SUPPLY (2)
Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-15, "Wiring Diagram — Ignition Power Supply —".
NO >> Repair or replace error-detected parts.
3.CHECK AWD CONTROL UNIT POWER SUPPLY (3)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK AWD CONTROL UNIT POWER SUPPLY (4)
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace error-detected parts.
5.CHECK AWD CONTROL UNIT GROUND
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD control unit pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC “P1811” is detected, Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
P181B INCOMPLETE SELFSHUT
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P181B | INCOMP SELF SHUT (Incomplete self shut) | When ignition switch is ON, self-shut of AWD control unit was incomplete. |
POSSIBLE CAUSE
FAIL-SAFE
No impact to vehicle behavior.
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
Is DTC “P181B” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-50, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.CHECK AWD CONTROL UNIT POWER SUPPLY (1)
CAUTION: Never start the engine.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK AWD CONTROL UNIT POWER SUPPLY (2)
Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-15, "Wiring Diagram — Ignition Power Supply —".
NO >> Repair or replace error-detected parts.
3.CHECK AWD CONTROL UNIT POWER SUPPLY (3)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK AWD CONTROL UNIT POWER SUPPLY (4)
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace error-detected parts.
5.CHECK AWD CONTROL UNIT GROUND
Is the inspection result normal? YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD control unit pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC “P181B” is detected, Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
P181D ENGINE TORQUE SIGNAL
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P181D | ENGINE SYSTEM (Engine system) | Malfunction related to engine signal has been detected. |
POSSIBLE CAUSE
FAIL-SAFE
AWD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “P181D” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-53, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.PERFORM ECM SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis for “ENGINE”.
Is any DTC detected? YES >> Check the DTC. Refer to EC-93, "DTC Index".
NO >> GO TO 2.
2.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD 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 “P181D” is detected, Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
P181F INCOMPLETE CALIBRATION
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P181F | INCOMP CALIBRATION (incomplete calibration) | When incomplete writing unit characteristics of electric controlled coupling are detected. |
POSSIBLE CAUSE
Writing unit characteristics are incomplete.
FAIL-SAFE
AWD control changes to front-wheel drive immediately, then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “P181F” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-54, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.PERFORM WRITING UNIT CHARACTERISTICS
Is any DTC except “P181F” detected? YES >> Perform trouble diagnosis for detected DTC. Refer to DLN-23, "DTC Index".
NO >> GO TO 2.
2.PERFORM SELF-DIAGNOSIS AGAIN
With CONSULT
Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) again. Refer to DLN-54, "DTC Description".
Is DTC “P181F” detected? YES >> Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
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.
U1000 CAN COMM CIRCUIT
DTC Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicate data but selectively reads required data only.
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
U1000 | CAN COMM CIRCUIT (CAN communication circuit) | AWD control unit is not transmitting/receiving CAN communication signal for 2 seconds or more. |
POSSIBLE CAUSE
FAIL-SAFE
AWD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “U1000” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-55, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
Proceed to LAN-17, "Trouble Diagnosis Flow Chart".
U1010 CONTROL UNIT (CAN)
DTC Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicate data but selectively reads required data only.
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
U1010 | CONTROL UNIT (CAN) [Control unit (CAN)] | Detecting error during the initial diagnosis of CAN controller of AWD control unit. |
POSSIBLE CAUSE
Internal malfunction of AWD control unit
FAIL-SAFE
AWD control changes to front-wheel drive gradually (rear-wheels still have some driving torque), then AWD control stops, and the vehicle becomes front-wheel drive.
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
Is DTC “U1010” detected?
YES >> Proceed to diagnosis procedure. Refer to DLN-56, "Diagnosis Procedure".
NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".
NO-2 >> Confirmation after repair: INSPECTION END
Diagnosis Procedure
1.CHECK AWD CONTROL UNIT
Check AWD control unit harness connector for disconnection and deformation.
Is the inspection result normal? YES >> Replace AWD control unit. Refer to DLN-67, "Removal and Installation".
NO >> Repair or replace error-detected parts.
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
1.CHECK AWD CONTROL UNIT POWER SUPPLY (1)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK AWD CONTROL UNIT POWER SUPPLY (2)
Is the inspection result normal? YES >> Perform the trouble diagnosis for ignition power supply circuit. Refer to PG-15, "Wiring Diagram — Ignition Power Supply —".
NO >> Repair or replace error-detected parts.
3.CHECK AWD CONTROL UNIT POWER SUPPLY (3)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK AWD CONTROL UNIT POWER SUPPLY (4)
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace error-detected parts.
5.CHECK AWD SOLENOID POWER SUPPLY (1)
CAUTION: Never start the engine.
Is the inspection result normal? YES >> GO TO 7.
NO >> GO TO 6.
6.CHECK AWD SOLENOID POWER SUPPLY (2)
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit. Refer to PG-4, "Wiring Diagram — Battery Power Supply —".
NO >> Repair or replace error-detected parts.
7.CHECK AWD CONTROL UNIT GROUND
Is the inspection result normal? YES >> INSPECTION END
NO >> Repair or replace error-detected parts.
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...
CAN system (type 1)
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connecti ...
P1574 ASCD vehicle speed sensor
Description
The ECM receives two vehicle speed sensor signals via CAN communication line.
One is sent from combination
meter, and the other is from TCM (Transmission control module). The ECM uses
these signals for ASCD
control. Refer to EC-47, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys ...