SAAB WIS ONLINE

DTC C056D

DTC C056D

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 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


The electronic brake control module (EBCM) disables the ABS, traction control, and stability control for the duration of the ignition cycle.

The ABS indicator turns ON.

The traction control/stability control-active indicator turns ON.


Conditions for Clearing the DTC


A current DTC clears when the diagnostic runs and passes.

The EBCM will turn OFF the indicators and enable the system functions in the next ignition cycle.


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


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. Verify that DTC C056D is not set.

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.

3. If the DTC is set in a control module that cannot be programmed, replace the control module that set the DTC.

4. If the DTC is set in a sensor, replace the sensor that set the DTC.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for module or sensor replacement, programming and setup