DTC C0899. Chevrolet Silverado

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2008 🢒 Silverado - 4WD 🢒 DTC 🢒 DTC C0899

DTC C0899 EBCM

Diagnostic Instructions

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

•	Review Strategy Based Diagnosis for an overview of this diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0899 00: Device Voltage Low - EBCM (JF3/JF7/JH6/JH7)

DTC C0899 03: Device Voltage Low - EBCM (JL4)

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
B+	C0899 00, C0899 03	C0899 00, C0899 03	--	--
Ground	--	C0899 00, C0899 03	--	--

Typical Scan Tool Data

Battery Voltage Signal - EBCM

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON, engine OFF. Parameter Normal Value: 12.6 Volts
B+	0.0 Volts	0.0 Volts	12.6 Volts

Circuit

Short to Ground

Open

Short to Voltage

Operating Conditions: Ignition ON, engine OFF.

Parameter Normal Value: 12.6 Volts

B+

0.0 Volts

12.6 Volts

The electronic brake control module (EBCM) monitors the battery positive (B+) voltage level available for system operation. A low voltage condition prevents the system from operating properly. If low voltage is detected by the EBCM, then DTC C0899 sets.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The ignition voltage available to the EBCM is less than 9 volts for 100 msec.

Action Taken When the DTC Sets

•	The traction control system (TCS) and vehicle stability enhancement system (VSES) are disabled for the duration of the ignition cycle.

•	The vehicle dynamics caution (VDC) indicator turns ON.

Conditions for Clearing the DTC

•	The condition for the DTC is no longer present.

•	The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

•	A low voltage DTC in multiple modules indicates a concern in the charging system.

•	Inspect the ground connection G300 to verify that it is clean and tight.

Reference Information

Schematic Reference

•	Antilock Brake System Schematics

•	Starting and Charging Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

•	ABS Description and Operation

•	Charging System 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

Engine running, accessories OFF, measure and record the battery voltage at the battery terminals. The voltage should be between 12.6 and 15.0 volts.

⇒	If not within the specified range, refer to Charging System Test.

Observe the scan tool EBCM Battery Voltage Signal parameter. The reading should be between 12.6 and 15.0 volts.

Circuit/System Testing

Ignition OFF, disconnect the harness connector at the module that set the DTC.
Ignition OFF and scan tool disconnected, open and close the drivers door, and wait 1 minute. Test for less than 5 ohms between the ground circuit terminals listed below and ground.

•	Terminal 11 (JH6/JH7 EBCM)

•	Terminal 28 (JF3/JF7 EBCM)

•	Terminal 38 (JL4 EBCM)

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground.

•	Terminal 1 (JH6/JH7 EBCM)

•	Terminal 25 (JF3/JF7/JL4 EBCM)

⇒	If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

If all circuits test normal, replace the EBCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for EBCM replacement, setup and programming.

DTC C0899 PTO