DTC C0297
DTC C0297 |
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
has overviews of all diagnostic categories.
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DTC Descriptor |
DTC C0297 02
Brake Applied Output Circuit Short to Ground
Diagnostic Fault Information |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
Brake Applied Output Signal
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C0297 02
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-
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-
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-
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Circuit/System Description |
The brake pedal position sensor is used to sense the action of the driver application of the brake pedal. The brake pedal position sensor provides an analog voltage signal that will increase as the brake pedal is applied. The body control module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply a 12 V signal to the brake applied output circuit to the engine control module (ECM).
Conditions for Running the DTC |
The ignition is ON.
Conditions for Setting the DTC |
The BCM detects a short to ground on the control circuit.
Conditions for Clearing the DTC |
The condition for setting the DTC is not longer present.
Reference Information |
Schematic Reference
Exterior Lights Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Exterior Lighting Systems 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 information on diagnostic tools
Circuit/System Verification |
Verify that DTC C0277 is not set.
Circuit/System Testing |
1. |
Ignition OFF, disconnect the K20 Engine Control Module harness connector listed below:
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Harness connector X1 with LDK or LBY
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Harness Connector X2 with LUU, LBS, LAU or LBW
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2. |
Connect a test lamp between ground and the terminal listed below:
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Terminal 52 with LLU, LDK, LAU or LBW
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Terminal 38 with LBS
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Terminal 24 with LBY
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3. |
Ignition ON, push and release the brake pedal. The test lamp should turn ON and OFF when changed between pushed an released brake pedal.
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4. |
If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 Body Control Module.
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5. |
If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
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6. |
If all circuits test normal, replace the K20 Engine Control Module.
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Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM or ECM replacement, setup, and programming