PRE-RELEASE
DTC C0574
| DTC C0574 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| 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 |
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Control
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C0574 02
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C0574 04
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-
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C0574 13, C0574 14
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Low Reference
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C0574 04
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-
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C0574 13, C0574 14
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| 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 |
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The ignition is ON.
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The test runs with a frequency of 50 Hz.
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| 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:
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All-wheel drive (AWD) is disabled.
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Service Rear Axle is displayed on the driver information center.
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| Conditions for Clearing the DTC |
C0574 02 and C0574 04
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The condition for setting the DTC is no longer present.
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The circuit is not tested unless the ignition is cycled.
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C0574 13 and C0574 14
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The temperature is within the limit for more than 30 s.
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The circuit is tested with a frequency of 50 Hz.
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| 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
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Verification |
Ignition ON, observe the scan tool Rear Differential Clutch Control Module Temperature parameter. The scan tool should display be between -40°C (-40°F) and 115°C (239°F) when stationary.
| Circuit/System Testing |
| Important | ||
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The rear drive clutch solenoid valve is calibrated with and is part of the rear differential clutch control module. Both components must be replaced as a matched set. |
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C0574 02 and 0574 04
Ignition ON. Verify that DTC C0574 02 or 0574 04 is not set.C0574 13 and 0574 14
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Ignition OFF, allow the housing and the K47 rear differential clutch control module temperature to adjust to within 0-40°C (32-104°F).
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| 2. |
Ignition ON, verify that DTC C0574 13 or C0574 14 is not set.
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| 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
