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DTC C0574

DTC C0574

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• Diagnostic Procedure Instructions provides an overview of each diagnostic category.


DTC Descriptors

DTC C0574 02

Printed Circuit Board Temperature Sensor Short to Ground

DTC C0574 04

Printed Circuit Board Temperature Sensor Open

DTC C0574 13

Printed Circuit Board Temperature Sensor Low Voltage/High Temperature

DTC C0574 14

Printed Circuit Board Temperature Sensor High Voltage/Low Temperature

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Control C0574 02 C0574 04 - C0574 13, C0574 14
Low Reference - C0574 04 - C0574 13, C0574 14


Circuit/System Description

A temperature sensor is installed on the circuit board of the rear differential clutch control module. The sensor is used for calculating the module circuit board and differential clutch fluid temperature.

Conditions for Running the DTC


• The ignition is ON.

• The test runs with a frequency of 50 Hz.


Conditions for Setting the DTC

C0574 02

The analog-digital converter circuit is shorted to ground for more than 3 seconds.

C0574 04

The analog-digital converter circuit is open for more than 3 seconds.

C0574 13

The board temperature is greater than 115°C (239°F) for more than 3 seconds.

C0574 14

The board temperature is less than -40°C (-40°F) for more than 3 seconds.

Action Taken When the DTC Sets

One or more of the following actions may occur:


• All-wheel drive (AWD) is disabled.

• Service Rear Axle is displayed on the driver information center.


Conditions for Clearing the DTC


C0574 02 and C0574 04

• The condition for setting the DTC is no longer present.

• The circuit is not tested unless the ignition is cycled.



C0574 13 and C0574 14

• The temperature is within the limit for more than 30 s.

• The circuit is tested with a frequency of 50 Hz.


Diagnostic Aids

C0574 13 and C0574 14

The DTCs C0574 13 and C0574 14 indicate that the rear differential clutch control module temperature is out of range. This is a temporary fault. The rear differential clutch control module is protected against running during critical temperatures. As soon as the temperature reaches normal values the actual DTC is cleared.

Reference Information

Schematic Reference

Rear Axle Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Rear Drive Axle Description and Operation

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification


1. Ignition ON

2. Check with the diagnostic tool that the rear differential Clutch Control Module shows a temperature parameter between -40° C (-40° F) and 115° C (239°F).

3. If the parameter is not between -40° C (-40° F) and 115° C (239°F)

See Circuit/System test.

4. If the parameter is between -40° C (-40° F) and 115° C (239°F)

5. Everything is OK.


Circuit/System test

Note

Q48 solenoid valve for the rear axle clutch is calibrated with and is part of K47 control module for the rear differential clutch. Both components must be replaced as a matched set.



C0574 02 and 0574 04

1. Ignition ON

2. Check that DTC C0574 02 or 0574 04 is not set.

3. If any DTC is set.

Replace K47 the control module for the rear differential clutch and Q48 solenoid valve for the rear drive clutch.

4. If the DTC is not set

5. Everything is OK



C0574 13 and 0574 14

1. Ignition OF, let the temperature of the housing and K47 control module for the rear differential clutch adapts within 0-40° C (32-104° F).

2. Ignition ON.

3. Check that DTC C0574 13 or C0574 14 is not set.

4. If a DTC is set.

Replace K47 rear differential clutch control module and Q48 solenoid valve for the rear drive clutch.

5. If the DTC is not set

6. Everything is OK.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for rear differential clutch control module replacement, setup, and programming