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

GF1A TRANSFER / 4WD / AWD  DYNAMIC TORQUE CONTROL AWD SYSTEM  C1298  Linear Solenoid Circuit  


DESCRIPTION

The 4WD ECU assembly receives signals from each sensor to control clutch fluid pressure for limiting the center differential operation, which distributes torque according to the driving conditions.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1298 Linear Solenoid Circuit When all of the following continue for 1 second or more:
·

IG1 voltage is 9.5 V or more.

·

The current requested by the 4WD linear solenoid (transmission coupling assembly) is either 0 A or greater than 0.8 A.

·

Open or short occurs in the 4WD linear solenoid circuit.


·

Wire harness or connector

·

4WD linear solenoid (Transmission coupling assembly)

·

4WD ECU assembly



DTC Detection Conditions: C1298
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition IG1 voltage is 9.5 V or more, the current requested by the 4WD linear solenoid (transmission coupling assembly) is 0 A. ○ -
IG1 voltage is 9.5 V or more, the current requested by the 4WD linear solenoid (transmission coupling assembly) is greater than 0.8 A. - ○
Malfunction Status Short occurs in the 4WD linear solenoid circuit. ○ -
Open occurs in the 4WD linear solenoid circuit. - ○
Detection Time 1 second or more 1 second or more
Number of Trips 1 trip 1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above is met.


WIRING DIAGRAM

C279204E22
1.135,1.531 2.5,1.708 1.365,0.177 10 false 4WD Linear Solenoid 3.656,0.531 3.979,0.74 0.323,0.208 10 false SLC 3.667,1.052 4.021,1.229 0.354,0.177 10 false BSF 4.063,0.531 4.25,0.698 0.188,0.167 10 false 2 4.052,1.031 4.208,1.229 0.156,0.198 10 false 1 4.875,0.563 5.031,0.76 0.156,0.198 10 false 1 4.875,1.031 5.031,1.229 0.156,0.198 10 false 2 5.104,0.667 5.719,0.865 0.615,0.198 10 false SLC- 5.115,1.156 5.729,1.354 0.615,0.198 10 false SLC+ 5.083,2.188 5.542,2.385 0.458,0.198 10 false L48 5.073,2.354 6.531,2.552 1.458,0.198 10 false 4WD ECU Assembly 1.313,2.208 1.625,2.406 0.313,0.198 10 false O1 1.313,2.375 4.344,2.583 3.031,0.208 10 false Transmission Coupling Assembly

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - TRANSMISSION COUPLING ASSEMBLY)
a.
C445075C10
2.5,0.083 2.917,0.333 0.417,0.25 1.417,1.917 1.25,1.917 1.25,1.917 1.094,1.167 true 0.5,1.917 0.667,1.917 0.667,1.917 0.729,1.177 true 1.469,1.833 1.958,2.021 0.49,0.188 10 false SLC+ 2.594,0.125 3.063,0.385 0.469,0.26 10 false L48 0.042,0.031 0.354,0.188 0.313,0.156 10 false *a 0.167,1.833 0.583,2 0.417,0.167 10 false SLC-
*a Front view of wire harness connector
(to 4WD ECU Assembly)


Disconnect the L48 4WD ECU assembly connector.


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

L48-2 (SLC+) - L48-1 (SLC-) 20°C (68°F) 2.2 to 2.6 Ω
L48-2 (SLC+) - Body ground Always 10 kΩ or higher
L48-1 (SLC-) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE 4WD ECU ASSEMBLY

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


NG

2.INSPECT TRANSMISSION COUPLING ASSEMBLY
2.INSPECT TRANSMISSION COUPLING ASSEMBLY
a.
C131916C01
1.575,1.186 1.117,1.614 false 1.813,1.187 2.229,1.591 false 0.844,1.626 1.149,1.778 0.306,0.152 10 SLC 2.161,1.634 2.466,1.786 0.306,0.152 10 BSF 0,0 0.313,0.156 0.313,0.156 10 *a
*a Component without harness connected
(4WD Linear Solenoid (Transmission Coupling Assembly))


Disconnect the O1 4WD linear solenoid (transmission coupling assembly) connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
1 (BSF) - 2 (SLC) 20°C (68°F) 2.2 to 2.6 Ω
1 (BSF) - Body ground Always 10 kΩ or higher
2 (SLC) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

NG

REPLACE TRANSMISSION COUPLING ASSEMBLY

Click hereDrivetrain>AXLE AND DIFFERENTIAL>REAR DIFFERENTIAL CARRIER ASSEMBLY>REMOVAL