RM36D0EC _52 Drivetrain _083067 GF1A TRANSFER / 4WD / AWD _0401881 DYNAMIC TORQUE CONTROL AWD SYSTEM C

GF1A TRANSFER / 4WD / AWD  DYNAMIC TORQUE CONTROL AWD SYSTEM  C05F51C  4WD/AWD Front/Rear Range Actuator Control Circuit Performance Circuit Voltage Out of Range  


DESCRIPTION

When a malfunction has occurred in the AWD coupling solenoid system, the 4WD ECU assembly stores DTC C05F51C.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
C05F51C 4WD/AWD Front/Rear Range Actuator Control Circuit Performance Circuit Voltage Out of Range
·

When the IG1 terminal voltage is 9.5 V or more and the current requested by the 4WD linear solenoid is 0 A, a short circuit condition continues for 1 second or more

·

When the IG1 terminal voltage is 9.5 V or more and the current requested by the 4WD linear solenoid is 0.8 A, an open circuit condition continues for 1 second or more


·

Wire harness or connector

·

4WD linear solenoid (Electro magnetic control coupling sub-assembly)

·

4WD ECU assembly


Displayed Yes

DTC Detection Conditions: C05F51C
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition IG1 terminal voltage is 9.5 V or more and current requested by 4WD linear solenoid is 0 A ○ -
IG1 terminal voltage is 9.5 V or more and current requested by 4WD linear solenoid is 0.8 A - ○
Malfunction Status Short circuit ○ -
Open 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 are met.


WIRING DIAGRAM

C449047E11
4.552,1.031 4.958,1.219 0.406,0.188 10 false SLC+ 4.552,1.74 4.958,1.927 0.406,0.188 10 false SLC- 4.542,2.604 4.948,2.792 0.406,0.188 10 false GND 4.823,3.042 6.25,3.292 1.427,0.25 10 false 4WD ECU Assembly 4.24,0.792 4.396,0.969 0.156,0.177 10 false 4 4.188,1.031 4.594,1.219 0.406,0.188 10 false N4 4.188,1.74 4.594,1.927 0.406,0.188 10 false N4 4.24,1.51 4.396,1.688 0.156,0.177 10 false 3 4.198,2.615 4.604,2.802 0.406,0.188 10 false N3 4.24,2.365 4.396,2.542 0.156,0.177 10 false 1 3.198,0.917 3.354,1.094 0.156,0.177 10 false 1 3.198,1.635 3.354,1.813 0.156,0.177 10 false 2 2.792,0.927 3.125,1.104 0.333,0.177 10 false BSF 2.771,1.625 3.104,1.802 0.333,0.177 10 false SLC 1.469,1.958 3.208,2.188 1.74,0.229 10 false 4WD Linear Solenoid 0.677,2.469 0.99,2.656 0.313,0.188 10 false O10 0.677,2.646 2.75,3.01 2.073,0.365 10 false Electro Magnetic Control Coupling Sub-assembly

CAUTION / NOTICE / HINT

NOTICE:

After performing repairs, clear the DTCs and check that the DTCs are not output again.


PROCEDURE

1.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))
a.

Turn the ignition switch off.


b.

Disconnect the N4 4WD ECU assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N4-4 (SLC+) - N4-3 (SLC-) 20°C (68°F) 2.2 to 2.6 Ω
N4-4 (SLC+) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))

NG

3.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))
2.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))
a.

Turn the ignition switch off.


b.

Disconnect the N4 4WD ECU assembly connector.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
N4-3 (SLC-) - Body ground Always Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE 4WD ECU ASSEMBLY

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


NG

3.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))
3.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))
a.

Turn the ignition switch off.


b.

Disconnect the N3 and N4 4WD ECU assembly connectors.


c.

Disconnect the O10 4WD linear solenoid (electro magnetic control coupling sub-assembly) connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N4-4 (SLC+) - O10-1 (BSF) Always Below 1 Ω
N4-3 (SLC-) - O10-2 (SLC) Always Below 1 Ω
N3-1 (GND) - Body ground Always Below 1 Ω
N4-4 (SLC+) or O10-1 (BSF) - Body ground Always 10 kΩ or higher
N4-3 (SLC-) or O10-2 (SLC) - Body ground Always 10 kΩ or higher
N4-4 (SLC+) or O10-1 (BSF) - N4-3 (SLC-) or O10-2 (SLC) Always 10 kΩ or higher
N4-4 (SLC+) - N3-1 (GND) Always 10 kΩ or higher
N4-3 (SLC-) - N3-1 (GND) Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (4WD ECU ASSEMBLY - 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY))
a.

Turn the ignition switch off.


b.

Disconnect the N4 4WD ECU assembly connector.


c.

Disconnect the O10 4WD linear solenoid (electro magnetic control coupling sub-assembly) connector.


d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
N4-3 (SLC-) or O10-2 (SLC) - Body ground Always Below 1 V



Result:
Proceed to
OK
NG



OK

5.INSPECT 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.INSPECT 4WD LINEAR SOLENOID (ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY)
a.

Turn the ignition switch off.


b.

Disconnect the O10 4WD linear solenoid (electro magnetic control coupling sub-assembly) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
O10-1 (BSF) - O10-2 (SLC) 20°C (68°F) 2.2 to 2.6 Ω



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY

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