RM38N0EC _52 Drivetrain _119335 GF1A TRANSFER / 4WD / AWD _0524142 DYNAMIC TORQUE CONTROL AWD SYSTEM J

GF1A TRANSFER / 4WD / AWD  DYNAMIC TORQUE CONTROL AWD SYSTEM  AWD Warning Remains ON  


DESCRIPTION

The 4WD ECU assembly is connected to the combination meter assembly via CAN communication.

If the 4WD ECU assembly stores any DTCs which are related to the dynamic torque control AWD system, the warning message is displayed on the multi-information display in the combination meter assembly.

WIRING DIAGRAM

C408952E07
0.635,0.708 2.313,1.219 1.677,0.51 10 false Multi-information Display 0.5,2.24 2.792,2.438 2.292,0.198 10 false Combination Meter Assembly 0.844,4.229 3.208,4.49 2.365,0.26 10 false : CAN Communication Line 3.896,1.979 4.979,2.323 1.083,0.344 10 false ECU-IGR NO. 3 5.74,1.698 5.896,1.896 0.156,0.198 10 false 3 5.729,2.573 5.885,2.771 0.156,0.198 10 false 4 5.958,1.802 6.417,2 0.458,0.198 10 false IG1 5.948,2.688 6.406,2.885 0.458,0.198 10 false GND 5.823,3.135 6.281,3.333 0.458,0.198 10 false L48 5.823,3.302 7.146,3.865 1.323,0.563 10 false 4WD ECU Assembly

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.


PROCEDURE

1.CHECK FOR DTC (CAN COMMUNICATION SYSTEM AND DYNAMIC TORQUE CONTROL AWD SYSTEM)
a.

Check if CAN communication system DTCs are output.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model)>DIAGNOSIS SYSTEM


b.

Check if the dynamic torque control AWD system DTC is output.

Chassis > Four Wheel Drive > Trouble Codes
50001 118

Result:
Result Proceed to
Neither CAN communication system DTC nor dynamic torque control AWD system DTC is output A
CAN communication system DTC is output B
Dynamic torque control AWD system DTC is output C


HINT:

When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.



A

2.CHECK IF 4WD ECU ASSEMBLY CONNECTOR IS SECURELY CONNECTED

B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model)>HOW TO PROCEED WITH TROUBLESHOOTING


C

REPAIR CIRCUIT INDICATED BY OUTPUT CODE (DYNAMIC TORQUE CONTROL AWD SYSTEM)

Click hereDrivetrain>GF1A (TRANSFER / 4WD / AWD)>DYNAMIC TORQUE CONTROL AWD SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.CHECK IF 4WD ECU ASSEMBLY CONNECTOR IS SECURELY CONNECTED
a.

Check if the 4WD ECU assembly connector is securely connected.

OK:

The connector is securely connected.



Result:
Proceed to
OK
NG



OK

3.INSPECT BATTERY

NG

CONNECT CONNECTOR TO ECU CORRECTLY

3.INSPECT BATTERY
a.

Check the battery voltage.

Standard Voltage:

11 to 14 V



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)

NG

CHECK CHARGING SYSTEM

Click herePower Source / Network>M20C-FKS, M20D-FKS (BATTERY / CHARGING)>CHARGING SYSTEM>ON-VEHICLE INSPECTION


4.CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)
a.
C445075C09
2.417,0.083 2.833,0.333 0.417,0.25 1.938,1.927 2.24,1.927 2.24,1.927 2.333,1.177 true 1.688,1.854 2.031,2.052 0.344,0.198 10 false IG1 2.51,0.125 2.99,0.323 0.479,0.198 10 false L48 0.094,0.073 0.406,0.229 0.313,0.156 10 false *a
*a Front view of wire harness connector
(to 4WD ECU Assembly)


Disconnect the L48 4WD ECU assembly connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Condition Specified Condition

Click Location & Routing(L48)Location & Routing

Click Connector(L48)Body>No. 2 Floor Wire>4WD ECU Assembly

L48-3 (IG1) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (GND TERMINAL)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (GND TERMINAL)
a.

Turn the ignition switch off.


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition

Click Location & Routing(L48)Location & Routing

Click Connector(L48)Body>No. 2 Floor Wire>4WD ECU Assembly

L48-4 (GND) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

6.READ VALUE USING GTS (4WD WARNING LIGHT)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.READ VALUE USING GTS (4WD WARNING LIGHT)
a.

According to the display on the GTS, read the Data List.

Chassis > Four Wheel Drive > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
4WD Warning Light AWD warning (multi-information display) OFF or ON OFF: Warning off
ON: Warning on 		-
Chassis > Four Wheel Drive > Data List
Tester Display
4WD Warning Light
50003 118 7

b.

Check the GTS display condition of the 4WD warning light.


Result:
Result Proceed to
Display of the Data List remains OFF A
Display of the Data List remains ON B



A

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM (for TFT Meter Type)>HOW TO PROCEED WITH TROUBLESHOOTING


B

REPLACE 4WD ECU ASSEMBLY

Click hereDrivetrain>GF1A (TRANSFER / 4WD / AWD)>4WD CONTROL ECU>REMOVAL