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Home >> Chevrolet >> 2013 >> Volt L4-1.4L Elect >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> C Code Charts >> C0293

C0293




DTC C0293

Diagnostic Instructions

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

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

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptors

DTC C0293 01
- Park Brake Switch Control Short to Battery

DTC C0293 06
- Park Brake Switch Control Low Voltage/Open

DTC C0293 08
- Park Brake Switch Control Performance-Signal Invalid

Diagnostic Fault Information






Circuit/System Description

The parking brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. The parking brake control module also contains the logic for applying and releasing the parking brake when commanded by the parking brake control switch. The parking brake control module will perform diagnostics on the parking brake control switch and its wiring harness to verify it is functioning properly. When the parking brake control module receives a signal from the switch the internal circuit board temperature is checked to verify it is within operating range before the control module performs the requested operation.

The park brake control switch diagnostic checks for failure conditions in the park brake switch and associated wiring into the parking brake control module.

Conditions for Running the DTC

Vehicle OFF, Vehicle in Service Mode, Vehicle ON, or Engine Running.

Conditions for Setting the DTC

The parking brake control module detects a short to battery, short to ground, open circuit, or an internal parking brake switch control malfunction.

Action Taken When the DTC Sets

* The electric parking brake is disabled.

* A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

* The parking brake control module clears the history DTC when a current DTC is not detected in 40 consecutive drive cycles.

* The condition for the DTC is no longer present.

Reference Information

Schematic Reference

Park Brake System Schematics [1][2]Electrical Diagrams

Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1

Description and Operation

Electronic Parking Brake Control Module Description Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Circuit/System Verification

1. Vehicle in service mode.

2. Verify the scan tool Park Brake Status parameter changes between Released and Apply while pressing and releasing the S91 park brake control switch.

• If the parameter does not change
Refer to Circuit/System Test.

• If the parameter changes

3. All OK.

Circuit/System Test

C0293 01 or C0293 06

1. Vehicle OFF, disconnect the harness at the S91 park brake control switch.

2. Test for greater than 11.5 V between the B+ circuit terminal listed below and ground:

* Terminal 1

* Terminal 4

* Terminal 5

• If 11.5 V or less

1. Vehicle OFF, disconnect the harness connector at the K83 parking brake control module.

2. Test for infinite resistance between the B+ circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance

3. Test for less than 2 ohms in the B+ circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the K83 parking brake control module.

• If greater than 11.5 V

3. Connect the harness connector at the S91 park brake control switch. Disconnect the harness connector at the K83 parking brake control module.

4. Vehicle in service mode, test for greater than 11.5 V between the ignition circuit terminal P and ground:

• If 11.5 V or less

1. Vehicle OFF, test for infinite resistance between the ignition circuit terminal P and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance

2. Test for less than 2 ohms in the B+ circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms and the fuse is blown, replace the K83 parking brake control module.

• If greater than 11.5 V

5. Vehicle OFF, test for less than 1 V between the circuit terminals listed below and ground:

* B+ circuit terminal N

* B+ circuit terminal R

* B+ circuit terminal S

* Signal circuit terminal B

* Signal circuit terminal C

* Signal circuit terminal D

• If 1 V or greater
Repair the short to voltage on the circuit.

• If less than 1 V

6. Test for infinite resistance between the signal circuit terminals listed below and ground:

* Signal circuit terminal B

* Signal circuit terminal C

* Signal circuit terminal D

• If less than infinite resistance
Repair the short to ground on the circuit.

• If infinite resistance

7. Test for less than 5 ohms between the signal circuit terminal D and the B+ circuit terminal R.

• If 5 ohms or greater

1. Vehicle OFF, disconnect the harness connector at the S91 park brake control switch.

2. Test for less than 2 ohms in the signal circuit terminal D end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, test or replace the S91 park brake control switch.

• If less than 5 ohms

8. Test for less than 5 ohms between the signal circuit terminal B and the B+ circuit terminal S.

• If 5 ohms or greater

1. Vehicle OFF, disconnect the harness connector at the S91 park brake control switch.

2. Test for less than 2 ohms in the signal circuit terminal B end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, test or replace the S91 park brake control switch.

• If less than 5 ohms

9. Test for less than 5 ohms between the signal circuit terminal C and the B+ circuit terminal N.

• If 5 ohms or greater

1. Vehicle OFF, disconnect the harness connector at the S91 park brake control switch.

2. Test for less than 2 ohms in the signal circuit terminal C end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, test or replace the S91 park brake control switch.

• If less than 5 ohms

10. Replace the K83 parking brake control module.

C0293 08

1. Vehicle in service mode.

2. Verify that DTC C0293 08 is not set.

• If DTC C0293 08 is set

1. Remove the electric parking brake fuse and reinstall.

2. Verify the DTC is not set.

• If the DTC is set,
replace the S91 Electric Parking Brake Switch.

• If the DTC is not set

3. All OK.

• If DTC C0293 08 is not set

3. All OK.

Component Testing

1. Vehicle OFF, disconnect the harness connector at the S91 park brake control switch.

2. Test for infinite resistance between the terminals listed below with the switch in the inactive state:

* B+ terminal 4 and the park brake control switch signal terminal 1

* B+ terminal 4 and the park brake control switch signal terminal 2

* B+ terminal 5 and the park brake control switch signal terminal 1

* B+ terminal 5 and the park brake control switch signal terminal 2

* Park brake control switch signal terminal 3 and the park brake control switch signal terminal 1

* Park brake control switch signal terminal 3 and the park brake control switch signal terminal 2

* Park brake control switch signal terminal 7 and the park brake control switch signal terminal 1

* Park brake control switch signal terminal 7 and the park brake control switch signal terminal 2

• If less than infinite resistance
Replace the S91 park brake control switch.

• If infinite resistance

3. Test for less than 5 omhs between the terminals listed below with the switch in the inactive state:

* Park brake control switch signal terminal 1 and terminal 2

* B+ terminal 4 and park brake control switch signal terminal 7

* B+ terminal 5 and park brake control switch signal terminal 3

• If 5 ohms or greater
Replace the S91 park brake control switch.

• If less than 5 ohms

4. Test for less than 5 omhs between the terminals listed below with the switch in the apply position:

* Park brake control switch signal terminal 1 and terminal 2

* B+ terminal 4 and park brake control switch signal terminal 1

* B+ terminal 4 and park brake control switch signal terminal 2

* B+ terminal 5 and park brake control switch signal terminal 3

• If 5 ohms or greater
Replace the S91 park brake control switch.

• If less than 5 ohms

5. Test for less than 5 omhs between the terminals listed below with the switch in the release position:

* Park brake switch control signal terminal 1 and terminal 2

* B+ terminal 5 and park brake control switch signal terminal 1

* B+ terminal 5 and park brake control switch signal terminal 2

* B+ terminal 4 and park brake control switch signal terminal 7

• If 5 ohms or greater
Replace the S91 park brake control switch.

• If less than 5 ohms

6. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Parking Brake Switch Replacement Service and Repair

* Control Module References Programming and Relearning for parking brake module replacement, programming and setup

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