GM Service Manual Online
For 1990-2009 cars only

DTC C0696 HSV

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 C0696: Position Sensor Overcurrent 5-Volt Supply

Circuit Description

The electronic suspension control (ESC) module provides a common regulated power supply of 5-volts to all of the position sensors. The ESC module monitors this power supply for a malfunction that could prevent it from correctly regulating the supply voltage.

Conditions for Running the DTC

The ignition is ON

Conditions for Setting the DTC

    • The ESC module senses suspension position sensor supply voltage is under 4.8 volts or over 5.2 volts
    • The condition is detected for 1 second in 4 consecutive ignition cycles.

Action Taken When the DTC Sets

    • The ESC module illuminates the LED in the ESC switch
    • Commands speed dependent damping system and normal force signals to default state.

Conditions for Clearing the DTC

    •  A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present
    • The ESC module senses the correct sensor supply voltage
    • Using a Tech2 Scan tool.

Reference Information

Schematic Reference

Electronic Suspension Control Schematics Suspension Controls Schematics

ESC Malfunction Indicator Lamp

When all DTC's are cleared, and the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle has been performed the ESC malfunction indicator lamp may stay illuminated for a period of up to 5 seconds when the ignition switch is moved to the "off" position. The ESC malfunction indicator lamp should switch off when the ignition is switched to the "on" position.

Connector End View Reference

Component Connector End Views

Electrical Information Reference

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

Scan Tool Reference

Control Module References

Circuit/System Verification

Ignition ON, observe the scan tool position sensor data parameter. The reading should be between 4.8-5.2 volts.

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at all 4 suspension position sensors.
  2. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal and a known ground
  3. If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ESC module
    If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC module.
  4. Reinstall each sensor one at a time while monitoring DTCs.
  5. If DTC resets, replace the suspect suspension position sensor
    If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the ESC module.
  6. If all circuits test normal, replace the applicable suspension position sensor.

Component Testing

  1. Disconnect the appropriate sensor.
  2. Install a 3-A fusible link wire between the 5-volt reference terminal on the wiring harness and the 5-volt reference terminal on sensor. Install a jumper wire between the low reference terminal on the sensor and a known ground.
  3. Connect a DMM between the signal circuit of the sensor and a known ground.
  4. Sweep the suspension position sensor through the entire range while monitoring the voltage on the DMM . The range should vary between 0.25-4.75 volts without any spikes or dropouts.
  5. If not within the specified range or is erratic, replace the appropriate suspension position sensor.

Repair Instructions

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

    •  Electronic Suspension Control Module Replacement Electronic Suspension Control (ESC) Module Replacement for electronic suspension control module replacement, setup and programming.
    •  Shock Absorber Replacement Shock Absorber Replacement