RM36D0EC _52 Drivetrain _083068 GF2A TRANSFER / 4WD / AWD _0401882 DYNAMIC TORQUE VECTORING AWD SYSTEM C

GF2A TRANSFER / 4WD / AWD DYNAMIC TORQUE VECTORING AWD SYSTEM C123A1C Supply Voltage Circuit Circuit Voltage Out of Range

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory
C123A1C	Supply Voltage Circuit Circuit Voltage Out of Range	· The vehicle speed is 3 km/h or higher and the IG1 terminal voltage is below 9.5 V for 10 seconds or more · The IG1 terminal voltage is 17 V or higher for 3 seconds or more	· Wire harness or connector · 4WD ECU assembly	Displayed	Yes

DTC Detection Conditions: C123A1C
		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	The vehicle speed is 3 km/h or higher	○	-
Malfunction Status	The IG1 terminal voltage is below 9.5 V	○	-
Malfunction Status	The IG1 terminal voltage is 17 V or higher	-	○
Detection Time		10 seconds or more	3 seconds 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

1.885,0.844 3.021,1.125 1.135,0.281 10 false ECU-IGR NO. 1 4.781,0.51 5.125,0.844 0.344,0.333 10 false 24 4.844,1.208 5,1.406 0.156,0.198 10 false 1 5.125,0.635 5.583,0.833 0.458,0.198 10 false IG1 5.125,1.333 5.583,1.531 0.458,0.198 10 false GND 4.99,1.833 5.5,2.042 0.51,0.208 10 false N3 5,2.031 6.5,2.292 1.5,0.26 10 false 4WD ECU Assembly

CAUTION / NOTICE / HINT

NOTICE:: ·

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

·

When the 4WD ECU assembly is replaced, before removing the 4WD ECU assembly, it is necessary to perform ECU Data Save to save the original 4WD ECU assembly information.

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·

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

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PROCEDURE

1.CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)

Turn the engine switch off.

1.552,0.073 1.906,0.323 0.354,0.25 2.521,1.531 2.833,0.833 2.833,0.833 3,0.833 true 0.198,0.198 0.51,0.396 0.313,0.198 10 false *a 3.042,0.771 3.375,1.052 0.333,0.281 10 false IG1 1.625,0.125 2.083,0.323 0.458,0.198 10 false N3

*a	Front view of wire harness connector (to 4WD ECU Assembly)

Disconnect the N3 4WD ECU assembly connector.

Turn the engine switch on (IG).

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
N3-24 (IG1) - Body ground	IG ON	11 to 14 V

Result:

Proceed to
OK
NG

2.CHECK HARNESS AND CONNECTOR (GND TERMINAL)

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CHECK HARNESS AND CONNECTOR (GND TERMINAL)

Turn the engine switch off.

Disconnect the N3 4WD ECU assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
N3-1 (GND) - Body ground	Always	Below 1 Ω

Result:

Proceed to
OK
NG

REPLACE 4WD ECU ASSEMBLY

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REPAIR OR REPLACE HARNESS OR CONNECTOR