GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2009 🢒 H2 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 DTC C0896

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 C0896 00: Device Voltage Range Performance

Circuit/System Description

Voltage is supplied to the electronic brake control module (EBCM) in the battery positive voltage circuit and the ignition voltage circuit. The EBCM monitors the supplied voltage to determine if it is within a valid operating range.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

Battery voltage is outside the normal range of 9-15.5 volts

Action Taken When the DTC Sets

All EBCM functions are disabled.

Conditions for Clearing the DTC
    • A current DTC will clear when the fault is no longer present.
    • A history DTC will clear after 50 fault-free ignition cycles.

Reference Information

Schematic Reference

Starting and Charging Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Charging System Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector X1 and X2 at the EBCM.
  2. Test for less than 5 ohms between the ground circuit terminal 1 or 32 and ground.
    3. ⇒If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, test for 9-15.5 volts between the B+ circuit terminal 16 and ground.
    4. ⇒If less than the specified range, test the B+ circuit for a short to ground or an open/high resistance.
    ⇒If greater than the specified range, refer to Charging System Test.
  4. Test for 9-15.5 volts between the ignition circuit terminal and ground.
    5. ⇒If less than the specified range, test the ignition circuit for a short to ground or an open/high resistance.
    ⇒If greater than the specified range, refer to Charging System Test.
  5. If all circuit test normal, replace the EBCM module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ESC module replacement, setup, and programming