C0600
DTC C0595, C0600, or C0605
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) provides an overview of each diagnostic category.
DTC Descriptors
DTC C0595 02
- Left Front Acceleration Sensor Circuit Short to Ground
DTC C0595 05
- Left Front Acceleration Sensor Circuit High Voltage/Open
DTC C0595 0A
- Left Front Acceleration Sensor Circuit Too Slow Transitions
DTC C0600 02
- Right Front Acceleration Sensor Circuit Short to Ground
DTC C0600 05
- Right Front Acceleration Sensor Circuit High Voltage/Open
DTC C0600 0A
- Right Front Acceleration Sensor Circuit Too Slow Transitions
DTC C0605 02
- Left Rear Acceleration Sensor Circuit Short to Ground
DTC C0605 05
- Left Rear Acceleration Sensor Circuit High Voltage/Open
DTC C0605 0A
- Left Rear Acceleration Sensor Circuit Too Slow Transitions
Diagnostic Fault Information
Circuit/System Description
The suspension control module supplies a 5 V reference voltage and a low reference to each body acceleration sensor. The body acceleration sensors supply a signal of 0.5-4.5 V to the suspension control module.
Conditions for Running the DTC
System voltage is between 9-16 V
Conditions for Setting the DTC
C0595 02, C0600 02, and C0605 02
The signal voltage is less than 0.5 V for 1.5 s
C0595 05, C0600 05, and C0605 05
The signal voltage is greater than 4.5 V for 1.5 s
C0595 0A, C0600 0A, and C0605 0A
* The number of signal changes is less than specified value for 2.5 s.
* Vehicle speed is greater than 30 km/h (19 MPH)
Action Taken When the DTC Sets
* The electronic suspension control is disabled for the duration of the ignition cycle.
* The driver information center displays the SERVICE SUSPENSION SYSTEM message.
Conditions for Clearing the DTC
* A present DTC will clear on the next consecutive malfunction-free ignition cycle.
* A history DTC will clear after 41 consecutive malfunction-free ignition cycles.
Reference Information
Schematic Reference
Electronic Suspension Control Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
Description and Operation
Electronic Suspension Control Description and Operation (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
Ignition ON, observe the scan tool Vertical Body Acceleration parameters. The parameters should be 0 m/s(2).
Circuit/System Testing
1. Ignition ON, verify that DTC C0870 is not present.
• If the DTC is present, refer to DTC C0870 (C0870) to diagnose that DTC prior to this diagnostic.
2. Ignition OFF, disconnect the harness connector at the appropriate B162 vertical body acceleration sensor.
3. Ignition OFF, open/close doors, and wait 60 seconds. Test for less than 5 ohm between the low reference circuit terminal 3 and ground.
• If greater than the specified value, test the low reference circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace the K19 suspension control module.
4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
• If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K19 suspension control module.
• If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K19 suspension control module.
5. Verify the scan tool Vertical Body Acceleration parameter is less than -3 m/s(2).
• If greater than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the K19 suspension control module.
6. Install a fused jumper wire between the signal circuit terminal 2 and the low reference circuit terminal 3.
7. Verify the scan tool Vertical Body Acceleration parameter is greater than 3 m/s(2).
• If less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K19 suspension control module.
8. If all circuits test normal, replace the B162 vertical body acceleration sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Electronic Suspension Front Vertical Accelerometer Replacement - Upper (Electronic Suspension Front Vertical Accelerometer Replacement - Upper)
* Electronic Suspension Rear Position Sensor Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for suspension control module replacement, setup and programming