PRE-RELEASE
DTC C056D
| DTC C056D |
| 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 Descriptor |
DTC C056D 00
Electronic control module, hardware
DTC C056D 0F
Signal interference in Electronic control module components
DTC C056D 18
Electronic control module components, low signal amplitude
DTC C056D 31
Electronic control module components, internal checksum error
DTC C056D 32
Electronic control module components, general memory error
DTC C056D 33
Electronic control module components, specific memory error
DTC C056D 34
ECU Hardware Performance RAM Failure
DTC C056D 35
ECU Hardware Performance ROM Failure
DTC C056D 36
ECU Hardware Performance EEPROM Failure
DTC C056D 37
Electronic Control Unit Hardware Malfunction
DTC C056D 39
In internal hardware failure is detected
DTC C056D 3A
Electronic control module components installed incorrectly
DTC C056D 3B
Electronic Control Unit Hardware Self-Test Malfunction
DTC C056D 3C
Electronic Control Unit Hardware Internal Malfunction
DTC C056D 43
Electronic control module components EEPROM programmed incorrectly
| Circuit/System Description |
The internal fault detection is handled inside the control module. No external circuits are involved.
| Conditions for Running the DTC |
Ignition ON
| Conditions for Setting the DTC |
In internal hardware failure is detected.
| Action Taken When the DTC Sets |
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The electronic brake control module (EBCM) disables the ABS, traction control, and stability control for the duration of the ignition cycle.
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The ABS indicator turns ON.
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The traction control/stability control-active indicator turns ON.
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| Conditions for Clearing the DTC |
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A current DTC clears when the diagnostic runs and passes.
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The EBCM will turn OFF the indicators and enable the system functions in the next ignition cycle.
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| Diagnostic Aids |
A newly replaced EBCM can set one or more DTC on its initial ignition ON cycle.
| Reference Information |
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS 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 |
| 1. |
Verify that DTC C056D is not set.
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| 2. |
If the DTC is set in a control module that can be programmed, program the control module. If the DTC resets, replace the control module that set the DTC.
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| 3. |
If the DTC is set in a control module that cannot be programmed, replace the control module that set the DTC.
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| 4. |
If the DTC is set in a sensor, replace the sensor that set the DTC.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for module or sensor replacement, programming and setup
